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Energy efficiency news.

Rebate updates, policy changes, and technology developments — aggregated from 50+ sources, AI-enriched, and scored for relevance.

industry Sep 26, 2026 2

Nissan Releases Pixo for Europe, Not Yet for Japan

Nissan has unveiled a new small electric car called the Pixo, aimed at the European market. It's a compact city car, just under 3.8 meters long, built for tight urban streets and parking. Despite the small size, it holds 356 liters of cargo with the back seats up, or 1,221 liters with them folded down. The car runs on a 60 kW electric motor and a 27.5 kWh battery using LFP (lithium iron phosphate) chemistry, a battery type known for being cheaper and more durable than some alternatives, though it also means a shorter range. Nissan says it gets up to 259 kilometers per charge on the WLTP test standard. With a fast charger, it can go from 15 to 80 percent battery in about 28 minutes. It also supports bi-directional charging, meaning the car could potentially send power back out, not just take it in. The car will be built at a Renault plant in Slovenia, since Nissan developed it jointly with Renault. This is a Europe-only release for now. Nissan has not said anything about bringing the Pixo to Japan, and there's no mention of US availability either. Pricing and detailed specs are expected in December, with deliveries to European customers starting in early 2027. For homeowners here, this isn't directly relevant yet, but it's a sign that automakers keep pushing smaller, cheaper EVs with new battery chemistries, which could eventually shape what's available for home charging setups down the road.

CleanTechnica
industry Sep 26, 2026 1

Donut Battery Vindicated: Element Analysis Proves Battery Not Lithium Or Sodium

This story is about a battery technology company called Donut Lab, which claims to have built a battery that isn't based on lithium or sodium. A new element analysis reportedly found only trace amounts of both, far below what a lithium or sodium battery would contain, which the company says backs up its claims. Critics have questioned whether the battery is what it's said to be, and this test is being presented as a response to that skepticism. There's nothing here that changes what's available to homeowners today. No product, price, release date, or rebate program is mentioned, and the battery isn't tied to any home energy system, solar setup, or backup power option you could buy or install now. It's an early-stage claim about battery chemistry, not a new option for your house. If you're weighing battery storage for solar panels or backup power, the technologies with track records and established rebates remain the ones worth looking into for now. This kind of story is worth filing away rather than acting on. If the technology matures into an actual consumer product, it would show up later as something with real specs, pricing, and availability, and that's the point where it would be worth a second look.

CleanTechnica
industry Sep 26, 2026 0

Mazda 6e — Japanese Carmakers Fight Back in Australia

This is car news out of Australia, not directly about home energy upgrades, but worth noting for anyone tracking the electric vehicle market. Mazda's new electric sedan, the 6e, is selling for about AU$54,000 and has drawn attention for its design, even winning a 2026 World Car of Year award. It's built in China by Changan on the Deepal platform, though Mazda designed the styling. The car runs a 70 kWh LFP (lithium iron phosphate) battery with 560 km of range and comes with features like heated and cooled seats, a 360-degree camera, and over-the-air software updates you can install at home. The bigger picture: Japanese brands are struggling to keep pace with Chinese and Tesla EV sales in Australia. Combined 2026 sales from Toyota, Subaru, Nissan, Mazda, and Suzuki electric models add up to roughly the same number as Tesla sold with the Model 3 alone. That gap matters if you're shopping around, since it points to Chinese-made and Tesla models currently offering the widest selection and strongest sales momentum in the EV space. None of this changes home energy programs or rebates, but if you're weighing an EV purchase alongside home upgrades like a heat pump or added insulation, it's a reminder that pricing and features in the EV market are shifting fast, and it's worth comparing current models rather than assuming last year's lineup or prices still apply.

CleanTechnica
industry Sep 26, 2026 0

XPENG Grows in Malaysia, & Readies G9L for Global Launch

Chinese automaker XPENG is expanding fast overseas, but this is about car sales, not home energy upgrades. In Malaysia, the company is opening 10 new showrooms by the end of 2026 that combine sales with service, parts, and repair work, so owners have a full support center near them rather than just a place to buy the car. XPENG is also preparing a global rollout of a new electric SUV called the G9L, built in both fully electric and range-extended (gas-assisted) versions. It debuted in China and will get its global launch on October 12 at the Paris Motor Show, with plans to sell it in 64 markets. The company says the SUV has passed 192 crash tests under safety standards used in Europe, Australia, and China, and has been road-tested across 26 countries. None of this points to a US launch, and there is no news here about EV tax credits, home chargers, or rebates for American buyers. If you are weighing an EV purchase or a home charging setup, this is simply a sign that global EV competition keeps growing, even as it plays out mostly in markets outside the United States.

CleanTechnica
industry Sep 26, 2026 0

Nissan Taps China JV To Power Philippine EV Push

Nissan is bringing two new electrified vehicles to the Philippines on November 6, both developed with its Chinese joint venture partner, Dongfeng Motor. The Navara Pro is a plug-in hybrid pickup (a vehicle that combines a gas engine with a battery you can charge from an outlet) with a 32.85 kWh battery giving about 135 kilometers of electric-only range, plus a gas engine backup. The Primera EV is a fully electric sedan offered with two battery sizes, one giving up to 510 kilometers of range and a larger one reaching 635 kilometers, with fast-charging that can refill the battery from 30 to 80 percent in about 14 minutes. These join Nissan's existing "e-POWER" lineup already sold in the Philippines, including the Kicks and X-Trail. Those models use a small gas engine only to generate electricity for a battery that powers the wheels, so they drive like an EV but never need to be plugged in. The X-Trail e-POWER is priced at about 2,290,000 pesos, roughly $36,700. None of this is U.S. news, and there's no indication yet that these specific models are headed to American driveways. But it signals where Nissan is putting its electrification effort: China-designed hybrid and electric platforms are becoming the backbone of its plans for markets outside Japan. If you're watching for more EV and plug-in hybrid options down the road, it's a sign of what parts and technology may eventually work their way into other markets, including possibly the U.S., though nothing here confirms that timeline.

CleanTechnica
industry Sep 26, 2026 0

Publish Your Book Through CleanTechnica Press

This one isn't about home upgrades or rebates. A clean energy news site called CleanTechnica is launching a publishing arm, CleanTechnica Press, and is now taking submissions from authors writing books about clean energy or sustainable business. The site's founder has just put out his own book through the new imprint and is opening the door for others to do the same. Writers interested can submit a pitch through the site's contact form, describing what their book is about and why it fits. If the publisher is interested, they'll ask for two sample chapters and a marketing plan, including how the author would promote the book. Only one book will be published this fall, so most submissions likely won't be selected. Authors who are chosen would pay an upfront fee of $3,000 to $5,000 for design, printing, and distribution, plus a share of each book's sales. There's nothing here about home energy upgrades, incentives, or rebates. If you're weighing insulation, a heat pump, or other efficiency work for your house, this piece has no bearing on that decision. It's relevant only if you happen to be writing, or thinking about writing, a book on clean energy topics yourself.

CleanTechnica
industry Sep 26, 2026 0

Tesla Full Self Driving Unsupervised Soon? And Further Conversations with Ara (the Grok AI Bot)

This is a personal account from a Tesla owner about the company's self-driving software, not an energy-efficiency story. It has little bearing on home upgrades or rebates, but here is what it covers. The writer, who owns a 2026 Tesla Model Y, describes using Tesla's "Full Self Driving" (FSD) software, now on version 14, which handles most driving tasks like navigating, stopping, and parking without the driver touching the wheel. He also talks with Tesla's built-in AI assistant, called Ara, which is built on the Grok chatbot. Ara told him Tesla is already running driverless robotaxi rides in limited areas, such as Austin, Texas, and predicted that the next version, V15, expected around the end of this year or early next year, will offer fully unsupervised self-driving with no human backup needed. The writer is skeptical this will happen on that timeline. On cost, Tesla no longer sells a one-time lifetime purchase of FSD to new buyers; it now charges $99 a month. Newer Teslas also no longer include basic lane-keeping assistance unless you pay for FSD. The writer worries that if Tesla raises prices further once "unsupervised" driving arrives, some owners on fixed incomes could be priced out of a feature that might reduce driving deaths. None of this involves home energy upgrades, insulation, heating, or rebate programs. It is solely about electric vehicle software and Tesla's AI assistant.

CleanTechnica
industry Sep 26, 2026 0

Renault 8 Gordini reborn as 270 hp electric rally retromobile

This is a car story, not a home energy story, so there is nothing here that affects your house or your upgrade plans. Renault has built a concept car called the Gordini 8, an electric reimagining of its 1964 Renault 8 Gordini rally car. The original had a 95 horsepower engine mounted behind the rear axle and a reputation for being twitchy at speed, but it trained a generation of French rally drivers. The new electric version keeps the silhouette but adds 270 horsepower, modern suspension, bigger wheels (19 inches front, 20 rear), and wider wings to keep it stable. Renault's design team says it worked through more than 300 sketches before landing on the final look, and even mixed a custom shade of blue meant to echo the original car's paint while giving it more depth. This is a one-off concept, not a car you can buy, and it has no connection to home energy upgrades, rebates, or efficiency programs. If you came here looking for news on heat pumps, weatherization, or rebate deadlines, this piece is not it.

Electrek
policy WA Sep 25, 2026 76

Washington State HFC Rules Still Apply Despite EPA R-410A Extension

Washington state homeowners planning a new central air conditioner should know that a recent federal change does not affect them. The EPA recently gave contractors more time to install older R-410A equipment made before 2025, but Washington's own rule still applies on top of federal law. As of January 1, 2026, any newly installed residential air conditioning system in Washington must use a refrigerant with a global warming potential (GWP, a measure of how much a substance contributes to warming compared to carbon dioxide) below 750. That rules out R-410A for new installs, regardless of what the federal rule now allows. State officials confirmed they have no plans to loosen this requirement to match EPA's change. If you already have an R-410A system, you don't need to replace it. State officials said existing equipment can keep running as long as it meets other legal requirements, such as rules against intentionally releasing refrigerant during repairs. Washington also runs a leak-management program for larger equipment, but that mainly targets bigger commercial and industrial systems, not typical home air conditioners. The practical takeaway for anyone shopping for new AC equipment in Washington: ask the vendor to confirm in writing that the system's refrigerant meets the state's GWP limit before you buy. Since rules vary by state, homeowners elsewhere should check what their own state requires, since federal changes don't necessarily override local restrictions.

ACHR News
policy TX Sep 25, 2026 65

Second federal judge overturns $7B Solar for All cancellation by Trump administration

A federal judge in Washington, D.C. has ruled that the Environmental Protection Agency illegally shut down Solar for All, a $7 billion federal program meant to help expand access to rooftop and community solar, particularly for low-income households. The ruling came in a lawsuit from Harris County, Texas, and follows a similar decision last week from a federal judge in Rhode Island. Both judges found the EPA's cancellation of the program broke the law. The EPA says it is reviewing the rulings and may appeal. Solar for All was created under the Inflation Reduction Act to help lower-income households save on energy costs through solar power. The EPA had ended the program in August, saying a new federal law gave it the authority to do so, but the judge disagreed, ruling the decision applied to the entire program nationwide, not just Harris County's grant. A separate lawsuit from 22 states was dismissed earlier this year. For homeowners, this mainly matters if you live in an area that had a Solar for All grant, since those programs were designed to help income-qualified households pay for solar installations. The legal fight isn't over, and the EPA could still appeal, so it is not clear yet whether or when funding will actually flow again. If you were hoping to use a local Solar for All program to help cover solar costs, it is worth checking with your state or local housing or energy office for updates on whether the program is available again.

Utility Dive
policy Sep 25, 2026 57

Anza expects at least a 40% spike in solar module prices after Section 232

A new tariff on solar equipment is set to raise prices, and the increase is already showing up in quotes. On December 4, a 15% tariff on imported polysilicon (the raw material used to make solar cells) takes effect, under a trade rule called Section 232 that the Commerce Department is enforcing on national security grounds. The tariff will push up costs for polysilicon and the products made from it, including solar ingots, wafers, cells, and finished panels. Data from Anza, a solar industry analytics firm, shows the effect is already underway. The median price for imported solar panels was $0.27 per watt before an August 7 announcement of the tariff; among suppliers that have since updated pricing, it is now $0.38 per watt for delivery after December 4, an increase of more than 40%. As of early September, more than half of suppliers on Anza's platform had already built the tariff into their prices. For homeowners, this mainly matters if you're considering solar panels for your house. Prices for panels bought and installed after early December are likely to be higher than what you'd see today, since the tariff raises costs throughout the supply chain, not just for large developers. On the upside, the solar industry group SEIA says the U.S. already has enough panel-manufacturing capacity to meet current demand, and expects more domestic capacity for the upstream materials (cells, wafers, and eventually polysilicon) to come online over the next few years, which could ease price pressure down the road.

PV Magazine USA
industry Sep 25, 2026 57

Repurposed Wind Turbine Blades and 5 Other Amazing Signs of Progress in the Southeast

A few clean energy projects around the Southeast show how the shift toward renewables is playing out on the ground. In North Carolina, a new study found solar farms use very little farmland compared to other common land uses, while still paying landowners and generating local tax revenue. More than 200 electric school buses, spread across 31 utilities in 21 states, are now sending stored battery power back to the electric grid during high-demand periods, a setup known as vehicle-to-grid (V2G) technology. Costco built a distribution center in Port St. Lucie, Florida that runs on solar power and battery storage, covering both the building and its electric vehicle chargers. Atlanta now requires reflective roofing on new construction, which can lower rooftop and neighborhood temperatures by several degrees in the hottest parts of the city and may help residents spend less on air conditioning. Tennessee has launched a rebate program to help apartment buildings and other multifamily properties install electric vehicle chargers; buildings with at least four units can apply for rebates covering up to 10 charging plugs per site. Elsewhere, retired wind turbine blades are getting a second life: one became a bus-stop bench in Huntersville, North Carolina, and another was turned into a footbridge in an Atlanta park. These reuse projects are part of a broader push to deal with turbine blades, which are harder to recycle than most other turbine parts. None of these programs require action from homeowners outside the areas mentioned, but they point to changes — like EV charging rebates or roofing rules — that may eventually show up in other states too.

Southern Alliance for Clean Energy (SACE)
case study Sep 25, 2026 56

FHB Podcast Segment: Should You Vent or Condition a Small Storage Space?

This week's Fine Homebuilding Podcast tackles a question many homeowners face: what to do with a small, insulated storage space under the house that has an HVAC duct running through it but isn't actually heated or cooled. A listener named Brit wrote in because her space has some growth on the walls and ceiling, likely mold or mildew tied to moisture and temperature swings, and she wanted to know whether the fix is to vent the space to the outside, bring it fully into the home's conditioned area, or handle it some other way. The podcast hosts walk through the tradeoffs. Venting a small storage space can let in humid outside air, which often makes moisture and growth problems worse rather than better, especially in humid climates. Conditioning the space, meaning tying it into the house's heating and cooling system, can control temperature and humidity more reliably, but it also means treating that closet as part of your living space for insulation and air-sealing purposes. The hosts discuss which approach tends to solve the underlying moisture problem rather than just moving it around. If you have a similar small, insulated but unconditioned storage nook near ductwork, and you're seeing staining or growth on the surfaces, this episode is worth a listen before deciding how to seal, insulate, or condition it. The full episode also covers unconditioned crawlspaces and updates from the Fine Homebuilding Summit.

Fine Homebuilding
industry CA Sep 25, 2026 55

California VPPs hit record during heatwave as bill sits on Governor’s desk

If you have a home battery in California, it may already be doing more than backing up your house during outages. On September 9, during a heat wave, about 110,000 home batteries statewide discharged together at a peak of more than 580 megawatts, the largest event of its kind on record. Tesla Powerwalls made up most of that, with Sunrun operating a little over half of the participating Powerwalls plus more than 30,000 batteries from other brands. The dispatch was triggered by a state program, the Demand Side Grid Support program, which calls on batteries when wholesale electricity prices spike above a set threshold. The next evening, Southern California utility Southern California Edison ran its own three-hour call, and the two events together showed the batteries could deliver over 720 megawatts if triggered on the same night. This kind of setup, where many home batteries act together as a "virtual power plant," lets utilities lean on stored home power instead of firing up gas plants during the highest-demand hours. An earlier statewide test in July 2025 found the approach could save up to $206 million by avoiding gas peaker plant use during the priciest hours of the year. The timing matters because two California bills, SB 913 and SB 905, are now awaiting the Governor's signature. They would set rules for valuing and counting home batteries toward the state's grid planning, and measure how much of the power grid's capacity actually gets used. Last year, the Governor vetoed similar bills and cut funding for the program behind the September dispatch, so the outcome is uncertain.

PV Magazine USA
industry Sep 25, 2026 50

How dirty is the power generated in your state?

How clean is your electricity? It depends heavily on where you live. New data for 2024 shows a wide gap between states in "carbon intensity" — how much planet-warming carbon pollution comes from generating each unit of power. West Virginia, Kentucky, and Wyoming have the dirtiest power, largely because they still burn a lot of coal. Vermont has the cleanest, drawing essentially all its power from renewables, mostly hydropower, since 2015. One wrinkle: this measures power generated in a state, not necessarily what actually reaches your outlets. Electricity travels across long-distance transmission lines, so a state that generates a lot of clean power, like Wyoming, might actually consume a different mix than it produces. Wyoming, for instance, generates about 12 times more electricity than it uses, exporting much of it elsewhere. The bigger picture is encouraging: the U.S. power sector's emissions fell about 40% between 2005 and 2024, as aging coal plants closed and were replaced by cheaper natural gas and renewable energy. Nearly every state's grid got cleaner over that period, except Idaho and Vermont. Many states are still pushing toward fully clean power by midcentury, though rising electricity demand from data centers and federal policy shifts favoring coal and gas could complicate that progress. For homeowners weighing electrification upgrades like heat pumps, the cleanliness of your local grid is worth knowing, since it affects how much those upgrades actually cut your household's carbon footprint. That mix varies by state and may keep shifting in the years ahead.

Canary Media
industry Sep 25, 2026 50

Henry Hub natural gas prices this summer were 6% lower than last summer

Natural gas cost less this summer than last, even though it was hotter out. From June through August, the benchmark U.S. price (Henry Hub) averaged $2.93 per million British thermal units, 6% below the same months in 2025. That matters to homeowners because natural gas prices influence both home heating bills and electricity rates, since gas-fired power plants supply a lot of the grid. Normally, extreme heat pushes gas prices up, since more air conditioning means power plants burn more gas. July was the hottest on record for the Lower 48 states. But prices stayed low for a few reasons. Solar and wind power grew enough to cover a good chunk of the extra summer electricity demand, easing the load on gas plants. At the same time, U.S. gas production hit record highs, and supplies in underground storage stayed well above the five-year average. That combination of more renewable power and ample gas supply kept prices in check despite the heat. Looking ahead, storage levels are expected to stay strong heading into winter, projected to end October about 5% above the five-year average. That cushion suggests continued supply is unlikely to add pressure to home heating costs this winter, though prices can still shift with weather and demand. For homeowners, the takeaway is simply that broader trends in fuel supply and renewable growth, not just local weather, help shape what shows up on winter heating and electric bills.

EIA Today in Energy
industry Sep 25, 2026 50

The challenges and opportunities of clean energy in rural America

Most of the country's clean energy — 87% of it — gets built in rural areas, since wind, solar, and battery projects need open land. But many rural counties have pushed back with bans or moratoriums on renewable projects, and the Trump administration has cut the Rural Energy for America Program, which for years helped farmers pay for solar panels that lowered their power bills. The pushback overlooks how small a footprint solar actually has: utility-scale solar uses just 0.07% of U.S. farmland, less than a third of what golf courses take up. Meanwhile, these projects can bring real money to rural communities and farmers, who can lease land for extra income to offset rising costs and climate pressures. In Illinois, a 300-megawatt wind project is expected to generate $81 million in local taxes over 30 years. Support for these projects isn't strictly partisan either — half of Americans back solar and wind development in their own area, and even a former Republican governor now heading the solar industry's trade group is framing clean energy as a property-rights issue, arguing landowners should be free to develop their own land as they choose. Separately, a federal judge has ruled the administration acted illegally in trying to end Solar for All, the $7 billion program that helps lower-income households access solar. If you live in a state with a similar program or are weighing a rural land lease, it's worth checking what protections or incentives currently apply where you live, since rules and funding are shifting quickly at both the state and federal level.

Canary Media
rebates CO Sep 25, 2026 48

Solar United Neighbors organizing another group purchase program in Denver

Denver residents can learn about home energy upgrades at a free event called "Powering Our Communities," happening Tuesday, September 29, from 5:30 to 7 p.m. at the Montclair Recreation Center. Solar United Neighbors and Rewiring America are hosting the session to explain how rooftop solar, battery storage, and heat pumps (systems that both heat and cool a home using electricity) work, and how group purchasing can lower the cost of installing them. The event supports Switch Together, a group-buying program run with the city and county of Denver. Signing up is free and doesn't commit you to any project. Instead, organizers use the combined buying power of everyone who joins to negotiate lower prices with vetted contractors. Last year, 5,000 Colorado residents signed up and nearly 1,000 went solar, with participants getting an average group discount of $5,135, about 20 percent off. More than 20 income-qualified Denver families also got extra help through a city rebate program, saving an average of $6,000 more on top of the group discount. If you're a Denver homeowner who has considered solar, battery storage, or a heat pump but wasn't sure where to start, this event offers a low-pressure way to get information and see whether the group program's pricing and rebates make sense for your house.

Solar Power World
industry Sep 25, 2026 46

Summit Explores Changes in Home Services Marketing

A recent industry event in Salt Lake City brought together companies like OpenAI, TikTok, ServiceTitan, and Thumbtack to talk about how home services businesses, including HVAC and other contractors, find customers online. The event, hosted by marketing firm Scorpion, focused on how search and advertising are shifting away from traditional methods, with sessions on AI-driven tools like ChatGPT ads, short-form video marketing, and new ways homeowners find contractors online. This is mainly industry news about how contractors market themselves rather than something that changes your options for upgrades or rebates directly. But it points to a real shift worth knowing about: homeowners increasingly find contractors through AI chat tools and video platforms like TikTok instead of typical web searches. If you are researching an energy upgrade, such as a heat pump or air sealing (sealing gaps and cracks that leak heated or cooled air), you may notice more contractors showing up through these newer channels, and the quality or accuracy of what you find may vary as businesses adjust their marketing. There is no new program, rebate, or deadline here. It is a look at how the contractor side of the industry is adapting its outreach, which may eventually shape how easily you find and vet contractors for home energy projects, but it does not change any current incentives or requirements for homeowners.

ACHR News
industry Sep 25, 2026 44

Home energy sales in 2026: Why solar companies are expanding beyond panels

Solar companies are starting to sell more than just rooftop panels. The pitch used to be simple: install solar, cut your electric bill, and wait for it to pay for itself. That is changing as utility rates keep climbing, the power grid grows less reliable, and more households add electric vehicles to the driveway. In response, solar installers are broadening what they offer, moving toward whole-home energy packages that can include batteries and other electrification upgrades alongside panels. The idea is that a single company might now help homeowners with backup power, EV charging, and broader home electrification, not just solar generation. There are no specific dollar amounts, program names, or deadlines tied to this shift. If you are weighing a solar installation, it may be worth asking any company you talk to whether they offer batteries or other home energy upgrades bundled with panels, since that combined approach seems to be where the industry is heading. As always, incentives and rebates for solar, batteries, and electrification vary by state, so it's worth checking what is currently available where you live before making a decision.

Solar Power World
case study NY Sep 25, 2026 42

Passive House Accelerator: The Handoff As Part of the Design

An architect who designs Passive House projects — highly airtight, highly insulated homes built to a strict energy standard — is making the case for a better handoff when construction wraps up. His point: homeowners moving into one of these houses are getting a building that behaves differently from a typical home, and simply handing over a binder of manuals doesn't prepare them for that. A Passive House holds its temperature much longer than a normal house, relies on continuous balanced ventilation (a system that constantly swaps stale indoor air for fresh outdoor air while recovering heat) rather than opening windows, and depends on filters that need regular attention. Skipping an explanation of how to actually live in and run the house, he argues, wastes the effort put into designing it. The piece draws on two real projects, including a Passive House–certified renovation of a mid-1800s Brooklyn brownstone whose owner has lived there six years, to explore what worked and didn't in explaining the home's systems at move-in. For homeowners, the practical takeaway is less about a specific product or rebate and more a reminder: if you're considering a deep energy retrofit or a Passive House–style renovation, the way your home operates afterward — ventilation, temperature stability, filter upkeep — can be different enough from a conventional house that it's worth asking upfront how those systems will be explained to you once the work is done.

Green Building Advisor
case study Sep 25, 2026 42

Zone 4A knee wall assembly question

A homeowner in a mixed-humid region (building code climate zone 4A) asked a building science forum about a knee wall design — the short wall that separates a finished attic room from unheated attic space. Their plan used 2x4 framing, foil-faced polyiso foam board on the outside (with no plywood or OSB sheathing), rockwool insulation between the studs, drywall, and paint. The concern: could moisture condense on the inside of the foil during cold weather, since foil-faced foam blocks moisture from passing through it? Building science experts responded that the foam's thickness, not the missing wood sheathing, is what matters. Foil-faced foam only causes condensation risk if it isn't thick enough to keep its inner surface above the dew point. For a 2x4 wall in this climate zone, foam rated around R-2.5 or higher is enough to avoid that risk — and common foil-faced polyiso board, even at 3/4 inch thick, comfortably clears that bar. Thinner or unfaced foam can also work, especially paired with a vapor retarder on the inside of the wall. For homeowners finishing an attic knee wall or planning similar work, the practical point is that thin, foil-faced rigid foam is not automatically risky — thickness and R-value are what keep moisture from condensing inside the wall in winter. This kind of detail matters most in attic conversions, additions, or any renovation where knee walls separate conditioned rooms from unconditioned attic space.

Green Building Advisor
policy SC Sep 25, 2026 42

SACE Among Environmental & Citizen Groups Asking SC PSC to Reconsider Valara Data Center Decision

A group of environmental and citizen organizations is pushing back against a South Carolina regulatory decision involving a data center's power plant in Spartanburg County. The Southern Environmental Law Center, representing Concerned Citizens of Spartanburg County and the Southern Alliance for Clean Energy, has asked the South Carolina Public Service Commission to reconsider a ruling that exempted a 460-megawatt gas power plant at the Valara data center from the state's Utility Facility and Environmental Protection Act. That law normally requires commission review of power plants larger than 75 megawatts, but on September 14 the commission decided this plant doesn't count because it will supply electricity to the private data center rather than the public grid. The groups argue this reading of the law is wrong and warn it could let other large private power plants, including future data center projects, skip the environmental and community review process that's applied to power plants in South Carolina since 1971. They say the Valara plant could become one of the biggest sources of pollution in Spartanburg County if it moves ahead without that oversight. The commission has 30 days to decide whether to reconsider its decision. For homeowners, this case doesn't involve any rebate, program, or upgrade you can act on directly. It's a dispute over how much environmental scrutiny large private power plants get in South Carolina, particularly ones built to serve data centers rather than homes and businesses on the public grid. The outcome could matter if you live near proposed data center or gas plant projects, since it affects how much public review such projects face going forward.

Southern Alliance for Clean Energy (SACE)
industry Sep 25, 2026 42

Harvard Study Predicts 32 Percent Of US New Car Sales In US In 2030 Will Be EVs

A new study from Harvard's Salata Institute predicts electric vehicles will make up 32 percent of new car sales in the US by 2030, up from about 8 percent today. That is a big jump, even though it is lower than the 48 percent the researchers expected before recent federal policy changes. The biggest single factor slowing EV adoption was the end of the $7,500 federal tax credit for buying an electric car, which the study says alone cuts projected 2030 EV market share by about 6 percentage points. The researchers say the credit will matter less over time as battery costs fall and EV prices get closer to those of gas cars. They also point to charging as the real hurdle for many buyers. As public fast chargers expand and apps make it easier to see charger status and prices in real time, the study suggests range anxiety could ease enough to boost EV sales by roughly 6 percent, about the same amount lost from ending the tax credit. For homeowners thinking about an EV, this suggests the incentive picture is shifting: the federal purchase credit that used to lower the price is gone, but battery costs and charging networks are still improving on their own. If you are weighing an EV alongside home upgrades like a heat pump or solar panels, it may be worth checking what state-level EV incentives or charging rebates are still available, since these vary widely and change often.

CleanTechnica
case study OR Sep 25, 2026 42

Advice for reducing sound from HRV return ducts

A homeowner rebuilding a small, tightly sealed 1948 cottage in Eugene, Oregon ran into a noise problem with their heat recovery ventilator, or HRV — a device that constantly exchanges stale indoor air for fresh outdoor air while recovering heat from the outgoing air. The unit, a Broan model set to run around the clock at its lowest speed, was sending noticeable sound back through the return ducts and out through two vents. Testing pointed to the fan and motor noise inside the unit itself as the source, rather than air turbulence or rattling ductwork. The homeowner's fix involves rerouting the metal ducting with acoustic silencers (in-line mufflers that absorb sound as air passes through), gentler duct bends, and a section of flexible duct to break up the noise path before it reaches the room vents. One experienced commenter agreed that these in-line silencers work well and suggested starting with just one installed in the main duct before it splits toward the two vents, then checking whether that alone solves the problem. If sound persists, swapping the last stretch of rigid duct near each vent for flexible duct was offered as a simple next step, since flexible duct absorbs sound better than rigid metal as long as it stays fairly straight. For anyone installing or living with a similar ventilation system, this is a reminder that duct layout, bends, and materials can matter as much as the equipment itself when it comes to keeping a heat-recovery system quiet.

Green Building Advisor
industry Sep 25, 2026 41

Whether it’s ‘super’ or ‘Godzilla,’ El Niño is already breaking records

This year's El Niño, a shift in Pacific Ocean trade winds that reshapes weather patterns worldwide, has already broken the record for the strongest one ever measured. Warming in the key ocean region scientists track hit 3.11 degrees Celsius above normal this week, surpassing the previous record set in 2015. Forecasters put the odds at 90 percent that it will stay at "very strong" levels through the end of the year, with the usual peak coming around December or January. The effects reach far beyond the Pacific. Scientists expect this El Niño to worsen drought, flooding, and heat in various parts of the world, and one study projects it could contribute to hundreds of thousands of heat-related deaths globally by February. California has declared a statewide state of emergency to prepare. Coastal erosion is already damaging homes in parts of Southern California, and some houses there have been red-tagged after storm waves battered the shoreline. For homeowners generally, the takeaway is that this winter and into next year may bring more extreme weather than usual — heavier storms in some regions, deeper drought in others, and a good chance that global temperatures set new records. If you live somewhere prone to flooding, wildfire, or coastal storms, it may be worth paying closer attention to local weather alerts and emergency declarations in the coming months, since this El Niño is expected to be unusually intense and long-lasting.

Grist
case study Sep 25, 2026 38

Podcast Episode 756: Builders Encouraging Best Practice, Unconditioned Crawlspaces, and the FHB Summit

This is a discussion podcast rather than a news story, so there's no policy change or program update to report. Still, one listener question touches on a problem some homeowners run into: a storage space built under a house or back porch that's insulated but not sealed off or connected to heating and cooling. In that episode, a listener from eastern Iowa described exactly this setup, with an HVAC duct running through the space and mold-like growth showing up on some surfaces. The hosts framed it as a choice between two approaches: either vent the space to the outside so moisture doesn't build up, or bring it fully into the conditioned part of the house so it stays warm, dry, and connected to the heating and cooling system. Leaving it in between, insulated but not clearly one or the other, is what tends to cause trouble, since damp air can get trapped with nowhere to go. If you have a similar under-porch storage area, crawl space, or other in-between zone in your house, especially in a climate with hot, humid summers and cold winters, it's worth noticing whether it's damp or shows any mold. That's a sign the space needs to be clearly treated as either vented or conditioned, not left in limbo. The rest of the episode covered general building topics, including a story about a developer who required correct window flashing, a discussion of drill safety, and highlights from a recent industry summit, including a talk on straw-bale construction. None of that carries specific news or numbers relevant to a homeowner's own upgrade plans.

Fine Homebuilding
industry TX Sep 25, 2026 32

Power Electronics building 40 GW manufacturing campus in Houston

Power Electronics, a maker of inverters (the devices that convert power from solar panels or batteries into electricity your home can use), broke ground on a new manufacturing campus in Houston, Texas. The site covers more than 53 acres and will include two buildings, one around 150,000 square feet and another around 700,000 square feet, housing production, research, training, and offices. Once running, it's expected to produce up to 40 gigawatts of inverter capacity a year and create more than 400 jobs in the area. For homeowners, this is mainly a manufacturing story rather than something that changes costs or rebates right away. More domestic inverter production could eventually mean shorter supply chains and more available equipment for solar and battery storage systems in the U.S., which is relevant if you're planning a solar or battery installation down the road. The company says the plant will be its most automated inverter factory yet, and with Houston added in, its total worldwide production capacity between the U.S. and Europe will reach about 105 gigawatts a year. There's no new incentive, rebate, or program tied to this announcement, and no timeline given for when the Houston plant will be fully operational. It's worth watching as a sign of growing U.S.-based manufacturing for solar and energy storage equipment, but it doesn't require any action or change any current plans for homeowners considering upgrades.

Solar Power World
industry Sep 25, 2026 32

Green Water & Power powers up its 10,000th EV charger in just 3 years

A company called Green Water & Power, working with charging hardware maker Autel Energy, has installed its 10,000th electric vehicle charging port since starting the rollout in 2023. That works out to roughly 10 new chargers a day, every day, for three years. Most of these are Level 2 chargers, the kind found in parking lots, apartment buildings, hotels, and similar locations, rather than home chargers, plus some faster DC fast chargers. For a homeowner, this news is less about anything you'd install at your own house and more a sign of how fast public and workplace-style charging is expanding. Green Water & Power says its network has delivered 16.6 million kWh so far with 99.72% uptime, meaning the chargers are working and available when drivers show up, and has offset more than 22,000 metric tons of carbon emissions. The company has contracts for another 3,000-plus Level 2 chargers and over 100 fast chargers in the near future, with more projects planned. If you're weighing whether to buy an EV or rely on charging away from home, growth like this matters: it means more places to plug in at hotels, schools, apartments, and hospitals, which can make an EV more practical even if you don't have a charger in your own garage. There's nothing here that changes rebates or requires action at home, but it's a sign the public charging network is filling in faster than it has in past years.

Electrek
industry Sep 25, 2026 30

A powerful El Niño season upends global solar resource assumptions

This summer's strong El Niño weather pattern threw off how much sunlight reached the ground in many parts of the world, with some regions seeing 20 to 30 percent more or less sunlight than usual. New data from solar analytics firm Solargis shows the swings varied widely by location: parts of South America (the Paraná River Basin, northern Argentina, Uruguay, southern Brazil) got over 20 percent less sun than normal, while southern England, Wales, and Normandy got over 20 percent more. Northern Europe, Scandinavia, and Scotland ran below average, while parts of Kenya, Ethiopia, Madagascar, Southeast Asia, and China saw notably higher sunlight levels. In North America, the picture was more mixed month to month, evening out over the summer overall, though the central United States ran especially hot, with temperatures over 2.5°C above the long-term average. Northern Canada was about 4°C warmer than usual, and the dry, hot conditions fed wildfires whose smoke can also cut down on solar panel output. Separately, a lack of rain near Dallas let dust and grime build up on solar panels, pushing modeled energy losses from dirty panels to their highest late-August level in 20 years, since there was no rain to wash panels clean. None of this is really about home solar installations changing hands or new incentives. It is a reminder that year-to-year weather, not just the sun's average path overhead, affects how much power any solar setup produces, including a home system if you have one. A hazy, dry, or unusually cloudy season can mean measurably less output than long-term averages would predict, even with nothing wrong with the equipment itself.

PV Magazine USA
industry NY Sep 25, 2026 28

Members at Greenbuild 2026: New York City

This news is about an industry conference, not a program that directly affects homeowners. The U.S. Green Building Council (USGBC), the organization behind the LEED green building certification system, is holding its Greenbuild International Conference and Expo in New York City from October 20 to 23, 2026. The group runs a members-only Expo floor lounge with networking meetups for professionals in fields like real estate, design and construction, public-sector work, and building materials. There's nothing here about rebates, tax credits, or specific technologies like heat pumps or air sealing that would change what a homeowner might do to their house. This is essentially an event announcement aimed at USGBC members and building-industry professionals who plan to attend the conference, letting them know about a new networking space and a schedule of meetups organized by industry sector. If you're not involved in the green building industry professionally, this particular update doesn't call for any action on your part. It's worth keeping an eye on future coverage from events like this, since new building standards, rebate programs, or product announcements sometimes come out of large industry gatherings, but this specific piece is about conference logistics rather than a new policy, rebate, or technology you could use at home.

US Green Building Council (USGBC)
industry Sep 25, 2026 28

Volkswagen is clearing out ID.4 EVs with a $12,500 discount

Volkswagen is offering a $12,500 customer cash discount on its 2025 ID.4 electric SUV, an unusually deep markdown meant to clear out remaining stock. The company stopped building the current ID.4 at its Chattanooga, Tennessee plant in April, switching that factory over to gas-powered models, and says it has enough 2025 and 2026 ID.4 inventory to last into 2027. Even so, it's now pushing hard to sell off what's left, and Volkswagen says supply of the discounted 2025 models is "very limited." The 2026 ID.4 gets a smaller $6,000 discount by comparison. For scale, other VW SUVs like the Taos and Tiguan are only getting $2,000 to $3,000 knocked off. If you're shopping for an EV, this could be a real opportunity. The base ID.4 Pro starts at $45,095 and gets up to 291 miles of range on a full charge, with all-wheel-drive versions running closer to 263 miles. A $12,500 discount brings the effective price down substantially. Volkswagen says these offers end November 2, 2026, and may vary depending on your state, so it's worth checking what's actually available near you. Longer term, the ID.4 as we know it is being phased out. Volkswagen plans to replace it with a redesigned electric SUV, expected to be called the ID. Tiguan, which should arrive by the end of 2026 with a more traditional SUV look, an updated interior, and likely better range and charging speed than the current model.

Electrek
industry TN Sep 25, 2026 26

Groups Sue TVA Over Clean Air Act Violations at Kingston Site

Environmental groups have sued the Tennessee Valley Authority over its Kingston power plant site in Harriman, Tennessee. The Southern Environmental Law Center, representing Appalachian Voices and the Sierra Club, says TVA violated the Clean Air Act by building a new gas plant next to its 70-year-old Kingston coal plant without first getting a required air permit or studying what the two plants' combined pollution would do. TVA had earlier promised to retire the coal plant, which was the site of a major coal ash spill in 2008, but reversed course this year and now plans to run it alongside the new gas plant. Together, the two plants could release large amounts of pollutants linked to asthma, heart disease, and other health problems, including nitrogen oxides, sulfur dioxide, fine particulate matter, and volatile organic compounds. The site's greenhouse gas emissions could also double. A federal court has already ruled that TVA's decision to build the gas plant broke the law, and Tennessee's environmental agency found the construction unlawful, though critics say the state's response let TVA off easy. A similar Clean Air Act lawsuit is underway over TVA's Cumberland plant in Middle Tennessee. This case is playing out in Tennessee and centers on a specific utility's compliance with federal pollution law. It does not involve a rebate program or a home upgrade. But TVA says keeping the Kingston coal plant running will cost more than $636 million, a cost that would likely show up on customer power bills in the areas TVA serves.

CleanTechnica
industry Sep 25, 2026 24

HVAC Innovation Showdown: And Then There Were Eight

A trade publication marking its 100th anniversary is running a bracket-style contest to crown the greatest HVAC innovation of all time, and voting is open to the public. Readers pick winners in head-to-head matchups, tournament style, until one technology is crowned champion. The first round narrowed 16 innovations down to eight. Smart thermostats beat out zoning systems, and low-GWP refrigerants (a newer generation of coolants designed to have less impact on the atmosphere) edged out CO2 refrigeration in a close race. Cold-climate heat pumps beat geothermal systems, ductless mini-splits beat high-efficiency condensing furnaces, and inverter-driven compressors beat standard central air conditioners. Also advancing: ECM motors (efficient electric motors used in blowers and fans), TXVs (valves that regulate refrigerant flow), and digital diagnostics and Bluetooth tools, which beat out indoor air quality accessories. This is a fun, informal contest rather than a policy or product announcement, so it doesn't change what's available for your house or what rebates you can get. But the list itself is a useful snapshot of which technologies the industry considers milestones — several of them, like cold-climate heat pumps, ductless mini-splits, and smart thermostats, are also common options homeowners consider today when planning heating and cooling upgrades. If any of those are on your radar, it may be worth looking into current rebates or incentives in your state, separate from this contest.

ACHR News
technology Sep 25, 2026 23

Solar panel wiring basics: How to wire solar panels

This piece explains how solar panels get wired together into a system, sometimes called "stringing," and why it matters for anyone with panels going on their roof. When panels are connected, the way they're grouped affects the voltage and current running through the system, which has to match what the inverter (the device that converts the panels' power into electricity your home can use) is built to handle. If the combined voltage from your panels is too high for the inverter, the inverter will cap how much power it puts out, and running it that way for a long time can shorten its lifespan. If the voltage is too low, the inverter may not turn on at all until it hits a minimum "start voltage," meaning your system produces less electricity than it should. Shade on part of your roof at different times of day can also throw off the voltage balance and cause the same kind of underproduction. For a homeowner, the takeaway is that proper wiring design isn't just a technical detail — it directly affects how much electricity your solar system actually generates and how long your equipment lasts. If you're getting quotes or already have panels installed, it's worth understanding that stringing and inverter matching are part of what determines your system's real-world performance, especially if your roof has any partial shading during the day.

Solar Power World
case study OH Sep 25, 2026 23

Floating solar array installed on Ohio village reservoir

A village in Ohio just switched on the state's largest floating solar array, a 6 megawatt system built by D3Energy on Monroeville's drinking water reservoir. Instead of solar panels on land, the system uses floating platforms (made by Ciel & Terre) to hold the panels directly on the water's surface. This approach saves more than 30 acres of land that a standard ground-mounted array would need, and it also helps cut down water loss from evaporation and keeps algae growth in check. The village will buy the power under a long-term agreement with project owner Gardner Capital, feeding it into Monroeville's local electric grid. The array is expected to generate over 7,500 megawatt-hours a year, enough to power around 700 homes, and it more than doubles the village's clean energy supply. This is D3Energy's third floating solar project in Ohio, following smaller systems in Delaware and Lima. Together, the three bring the state's total floating solar capacity to nearly 10 megawatts. This is a municipal utility project, not something homeowners can sign up for directly, but it points to a growing trend: putting solar panels on reservoirs and other water bodies to avoid the land-use fights that often slow down new solar farms. Research cited in connection with the project suggests U.S. reservoirs could host enough floating solar to supply a large share of the power needed to clean up the nation's electric grid by 2050, so this kind of setup may become more common in other towns over time.

PV Magazine USA
industry Sep 25, 2026 23

Want to get off gas? Learn how at Drive Electric Month events across the US

If you have been curious about switching from a gas car to an electric one, this month brings over 150 events across nearly every state (and one in Canada) where you can talk directly with EV owners, sit in different models, and sometimes get a test drive. The events run through most of September and into early October, timed with a spike in gas prices that has US pump costs at record highs. The gatherings range from small parking-lot meetups to large festivals with food trucks, live music, and dozens of cars on display. Many let you talk one-on-one with everyday EV owners rather than a dealer, which can be a more useful way to learn about charging, range, and ownership costs. Some events also cover related topics like home solar, e-bikes, and electric yard equipment, and a few include info on rebates or lower electricity rates for charging at off-peak hours through local electric co-ops. You can find a map and full list of events, search by location, and register for the ones near you online. Most are in person, but there are also a few online webinars if nothing is happening nearby, including one in late October covering EV ownership, charging, and getting money back through rebates. If you are weighing an EV purchase or just want to see what current models are like in person, this is a low-pressure way to check them out before visiting a dealership.

Electrek
industry Sep 25, 2026 21

Bluetti Early Prime Day drops 2,765Wh Apex 300 to $1,424, exclusive $600 savings on 2,048Wh + 3,584Wh Jackery stations, more

A batch of early Prime Day deals is out on portable power stations and outdoor home gear. Bluetti's Apex 300, a battery power station holding 2,765 watt-hours, is priced at $1,424, with a free gift and an extra discount code attached to the sale. Jackery has two power stations discounted as well: the 3,584Wh HomePower 3600 Plus is down to $1,299, and the smaller 2,048Wh HomePower 2000 Plus V2 is $799, both cheaper than Jackery's own ongoing sale prices. For outdoor equipment, Roborock's RockMow X115H and X130H robot lawn mowers start at $1,400 at new low prices. Anker's eufy SoloCam S220, a two-camera solar security kit that pairs with the HomeBase 3 hub, and Greenworks' 60V 16-inch string trimmer, which accepts other attachments, are both marked down for one day only. These join a run of deals still active from earlier in the week, including Anker eufy's broader Prime Day lineup of security cameras and cleaning devices, and EcoFlow's weekend flash sale on its Delta 3 Classic power stations and other models. None of this is tied to a rebate or efficiency program — it is standard retail discounting on backup power and home equipment, useful mainly if you were already considering a battery power station, a robot mower, or a security camera setup and want to catch a lower price.

Electrek
industry Sep 25, 2026 18

Otovo adds InCharge Energy’s EV maintenance skills to service offering

Two companies that maintain solar, battery, and EV charging equipment are teaming up to make repairs simpler for their commercial customers. Otovo, a solar and battery service company, is partnering with InCharge Energy, which handles EV charging installation and upkeep. The deal lets each company sell and dispatch technicians for the other's maintenance plans, so a business with solar panels, a battery, and an EV charger no longer needs separate contracts and phone numbers for each system. Behind the scenes, Otovo's software platform, called Endurance, will track and route service requests no matter which company a job starts with, so there's one record for the whole site. Each company still operates under its own name and sets its own customer relationships, but pricing on the shared maintenance plans will match between the two. This news applies to commercial customers of Otovo, not homeowners directly. But it points to a broader trend worth knowing about: as more houses add solar, battery storage, and EV chargers together, the companies that install and maintain that equipment are starting to bundle service so people don't have to juggle multiple vendors for different parts of their home energy setup. If you already have or are planning several of these systems, it may be worth asking a potential installer or service provider whether they offer this kind of combined maintenance coverage, rather than assuming you'll need a separate contract for each piece of equipment.

Solar Power World
industry Sep 25, 2026 18

What China’s clean power advantage means for the AI race

This is a story about how the U.S. and China are powering the AI boom, and it doesn't change anything about home energy upgrades or rebates. But it touches on something that affects electricity bills: data centers. The piece looks at why U.S. utilities are leaning on gas plants to power new AI data centers, even as many communities worry that data centers will push up electricity prices. China, by contrast, has added huge amounts of wind and solar power and is steering new data centers toward regions with cheap, abundant renewable energy, with a goal that new hubs get at least 80 percent of their power from renewable sources by 2030. China also shields households from price swings by regulating what residential customers pay, separately from commercial and industrial rates. The U.S. has tried something similar on a smaller scale, identifying federal sites suited for fast data center construction, but there is no coordinated national strategy matching data centers to available clean power the way China has done. Experts quoted in the piece say the U.S. system, built on private companies and slower permitting and grid-building, isn't likely to replicate China's approach anytime soon. For homeowners, the takeaway is indirect: how utilities choose to power data centers, whether with gas or renewables, and how well regions plan for that growth, will keep shaping electricity costs and grid reliability in the years ahead, even though this particular news doesn't involve any new rebate or upgrade program.

Latitude Media
industry Sep 25, 2026 16

How to Become Clean Energy Evangelist

A recent piece makes the case for switching more of your household to electric power, and it's mostly personal opinion rather than new policy, but a few concrete numbers are worth noting if you're car shopping. The writer, a longtime electric vehicle owner, says he financed a new base Tesla Model Y at 1.5% interest with payments around $559 a month, and a Model 3 at 2% interest for about $529 a month. A new long-wheelbase, six-seat Model YL runs about $992 a month. Full self-driving software costs $99 a month on top of that. He also points out that used EVs can be much cheaper — his son bought a seven-year-old Model 3 Performance with battery warranty remaining for $15,000 — though he warns that used-car lots often don't know key details like remaining battery range or which hardware version a car has, so you may need to check the car yourself. The Chevy Bolt EV starts at $27,600 and comes with a plug that works directly with Tesla Superchargers, no adapter needed. Beyond cars, the other concrete tip is about light bulbs: LED bulbs use about 10% of the energy of old incandescent bulbs for the same brightness, cutting lighting costs by roughly 90%, and they're rated to last around 20 years. He mentions buying 60-watt-equivalent LEDs online for about $1.28 each. The piece also flags future articles on switching gas water heaters and furnaces to heat pump models, which move heat rather than burning fuel to make it, but gives no details yet on cost or savings for those upgrades.

CleanTechnica
policy UT Sep 25, 2026 16

Utah Advocates Call for Air Agency to Hold Strong on Coal Plant Shutdown Date in Latest Regional Haze Plan

Utah's air quality agency held a public hearing on a revised plan for cutting haze pollution, and it has removed a previously set deadline requiring the coal-fired units at the Intermountain Power Plant to shut down by the end of 2027. The plan also skips the strongest available pollution controls for that plant. Environmental and parks groups spoke out against the change, arguing it would let a major polluter keep running with no modern controls in place. This plant, along with two other Utah coal plants, is among the country's worst sources of regional haze, the pollution that dims scenic views at national parks like Zion, Arches, Canyonlands, and even Yosemite in California. Most of the power the plant once generated was sold to buyers in California under contracts that have already ended, but state lawmakers passed a bill last year directing officials to look at keeping the coal units running, reportedly with interest now coming from data centers. For homeowners, this story is not about a rebate or a home upgrade you can act on. It is a reminder that regional air quality and the pace of retiring old coal plants remain contested at the state level, which can affect local air pollution levels and the broader push toward cleaner electricity in the region. The federal EPA had already flagged Utah's haze plan as inadequate in 2024, and this revision is now open for public comment before any final decision is made.

CleanTechnica
technology Sep 25, 2026 15

Geely’s AI fast charging ‘heals’ EV batteries for 20% more cycle life

Chinese automaker Geely has unveiled a new fast-charging system it says can actually undo some of the wear that fast charging puts on an EV battery. Its fifth-generation charging station puts out up to 2,250 kW, fast enough to take a battery from 10% to 70% in about 4.5 minutes. But the more interesting part is what Geely calls "pulse restoration" technology, which sends small pulses of current through battery cells to reactivate lithium that has built up on the negative electrode during repeated fast charging. That buildup, called lithium plating, is a major reason batteries lose capacity over time. Geely claims the pulse technology, paired with AI-managed charging, can add up to 20% more cycle life, meaning the battery could last through more charge cycles before it wears out. Geely also says it has a home-charging strategy that works overnight at a slower rate to gradually repair damage from fast charging, essentially letting home charging clean up after road-trip supercharging. An AI system called Xingrui PowerMind manages this by predicting battery temperature up to 30 seconds ahead and adjusting power and cooling before the pack overheats. None of this is available in the US yet, and most EVs sold here charge far slower than what Geely is testing in China. Still, the idea that fast charging damage could be partly reversible, rather than something drivers just have to live with, is notable, and it may show up in future EV designs as battery and charging technology keeps advancing.

Electrek
industry NV Sep 25, 2026 12

Tesla Semi finally enters volume production, 7 years behind schedule

Tesla has started high-volume production of its electric semi truck at a new factory in Nevada, seven years after it first promised the truck for 2019. This is industry and trucking news rather than something that changes home energy programs, but it touches on the same idea driving many home upgrades: electricity is often far cheaper to run equipment on than fossil fuel. Tesla says its truck runs on roughly $0.20 to $0.30 of electricity per mile, compared to about $0.80 a mile for diesel. For homeowners, the direct takeaway is limited, since this is about freight trucks, not home equipment. But the underlying math is the same one behind heat pumps, induction stoves, and electric vehicles at home: swapping a fuel-burning system for an electric one can cut running costs significantly when electricity prices stay well below fuel prices. Tesla itself points out that with residential electricity rates up nearly 10% last year, pairing electric upgrades with something like home solar can help protect against rising utility costs. There is no rebate, deadline, or program change here for households. It is simply a sign that the cost gap between electricity and fossil fuels is widening enough to reshape even heavy trucking, which is one more data point supporting the case for electrifying home systems where it makes financial sense.

Electrek
industry Sep 25, 2026 12

Why haven’t we had an Atlantic hurricane yet? Thank El Niño.

A record-strong El Niño, the band of warm water in the Pacific, is reshaping weather across the Americas this year. It's the warmest El Niño measured since satellites began tracking sea temperatures 50 years ago, and scientists expect it to keep intensifying into November or December. One side effect: the Atlantic hurricane season, which started in June, has yet to produce a single hurricane, breaking the previous record for latest first hurricane, which was September 11. El Niño creates wind shear and dry air over the Atlantic, conditions that hurricanes can't tolerate even though ocean water there is plenty warm. The Pacific side is seeing the opposite. Hurricane Polo intensified from a tropical storm to a Category 5 in under a day, an example of "rapid intensification" tied to unusually warm water. It's expected to hit Baja California, Mexico, early next week. Another storm, Nolo, became a hurricane and could bring heavy rain to Hawai'i. Beyond storms, this El Niño is projected to contribute to hundreds of thousands of heat deaths globally in its first nine months, and it's expected to shift rainfall patterns worldwide, bringing more rain to California and the Southwest while drying out other regions. For homeowners, the immediate takeaway is regional: if you're in a hurricane-prone Atlantic area, this season has been unusually quiet so far, while those in Pacific coastal regions or Hawai'i face active storm risk. Scientists note this event offers a preview of conditions expected to become more common as the planet continues warming.

Grist
industry Sep 25, 2026 11

Tesla ramps Optimus to hundreds a week, but the robots can’t generalize

This is Tesla news, not a home energy story, so there is nothing here about upgrading your house. Briefly: Tesla has ramped up production of its Optimus humanoid robot at its Fremont, California plant, building several hundred a week in August, up from a few dozen in the spring. The company is aiming for over 1,000 a week by year's end. Tesla converted the factory line that used to build the Model S and Model X sedans into the Optimus line earlier this year. Despite the faster pace, the robots reportedly still struggle with basic reliability and flexibility. The hands, which have more than 100 small parts each, are hard to assemble consistently, and touch sensors have had problems. Most of the robots built so far are used inside Tesla's own factories for testing and data collection, working only in supervised areas on narrow, preset tasks rather than general jobs. It can reportedly take the robot's AI several days to learn even a simple task, and the version being built now is not the one Tesla plans to eventually sell or lease to outside companies. None of this involves home energy equipment, rebates, or costs relevant to a household. It is a look at how Tesla's robotics program is progressing and the technical hurdles still standing between the current robots and any real commercial use.

Electrek
policy Sep 25, 2026 9

Canadian province announces PV panel recycling fee

Alberta is adding a recycling fee to new solar panels, starting October 1. Each new panel sold in the province will carry a CAN 14 environmental fee, meant to pay for collecting, transporting, and recycling panels once they wear out. The fee only applies to new panels going forward — if you already have solar installed, it won't be charged retroactively. For a typical home system of 20 panels, this works out to about CAN 280 total, which the province says is less than 1.5% of the overall cost of an installation. Alberta says this is the first program of its kind in North America, and it's also banning solar panels from being sent to landfills. Officials frame the fee as a way to build a local recycling industry ahead of an expected wave of aging panels — the province says 95% of currently installed panels could reach the end of their life by 2045, producing tens of thousands of tonnes of material. Not everyone is on board: an industry policy group has pointed out that the fee is several times higher than what's charged for other electronics recycling in Alberta, and higher than what independent estimates suggest recycling actually costs, arguing it could discourage new solar investment. If you live in Alberta and are planning a solar installation after October 1, expect this fee to show up on top of your equipment cost. If you're elsewhere, this doesn't apply to you directly, but it's a sign that other regions may eventually add similar end-of-life fees to solar panel purchases as more systems age out.

PV Magazine USA
industry VA Sep 25, 2026 5

FERC rejects Oklo complaint seeking to reinstate project to PJM’s interconnection study cycle

Federal regulators have rejected a bid by nuclear company Oklo to reinstate a large power project into the grid operator PJM's current interconnection study cycle, the process that reviews new power plants before they can connect to the grid. The Federal Energy Regulatory Commission said PJM did not violate its rules when it dropped the 750-megawatt project in Virginia, and Oklo had not fixed application problems that PJM staff had flagged. The project, planned to connect at two Dominion Energy substations between Washington, D.C. and Richmond, combines 150 megawatts of advanced nuclear generation with fuel cells and gas-fired generation. Oklo had argued the setback would delay the project by at least 18 months and raise its costs. Regulators noted Oklo can correct the errors and resubmit for a later study cycle, or apply for PJM's faster-track review process, which remains open through the end of 2027. This case is specific to a large commercial power project and does not involve home rebates or upgrades. But it is a reminder that new power generation serving your region, including nuclear and gas projects like this one, moves through a lengthy and sometimes contested approval process at PJM, the grid operator covering much of the mid-Atlantic and parts of the Midwest. Delays in adding new generation can affect how tight electricity supply is in your area over time, which in turn can influence electricity rates. Five similar disputes over dropped projects are still pending before the same regulators, so more decisions on the region's power supply are likely to come.

Utility Dive
industry Sep 25, 2026 3

Taiga Launches OS-5 Software, Bringing Industry-First Geofencing Its Electric Fleet

This one isn't really about home energy upgrades. Taiga, a Canadian maker of electric snowmobiles and personal watercraft, has rolled out a new operating system for its vehicles called OS-5. The update adds built-in mapping and a geofencing feature, which lets owners or rental operators draw zones on a map where the vehicle automatically slows down. That could mean speed-limited areas for new riders, or low-speed zones near shorelines, wildlife habitat, or busy tourist spots that Taiga sets up with local communities. The software also lays groundwork for future updates delivered wirelessly and, eventually, more autonomous features in these electric snowmobiles and watercraft. The update is being shown off at the Monaco Yacht Show and will reach existing Taiga vehicles through a remote software update in the coming weeks. This is company news about recreational electric vehicles, not a home upgrade program. It has no bearing on heat pumps, insulation, rebates, or anything else tied to household energy use. If you own one of these Taiga vehicles, it's worth knowing your unit may get new mapping and speed-limiting features automatically. Otherwise, there's nothing here that affects your house.

CleanTechnica
industry Sep 25, 2026 0

Uruguay EV Sales Report: Sales Soar in August as Market Share Reaches 56%!

Electric vehicles are taking over car sales in Uruguay, a small South American country that's become an unlikely leader in the shift away from gas-powered cars. In August, EVs made up 56% of all new vehicle sales there, with fully electric models (as opposed to gas-electric hybrids) accounting for 51%. That means roughly one in two cars sold in the country that month ran entirely on electricity. Sales have jumped 171% compared to a year earlier, and the country has gone from 5% EV market share to 50% in just two and a half years. The main driver seems to be simple economics: Uruguay has the most expensive gasoline on the continent, and EVs have become the better financial choice for many buyers. A new tax on imported EVs is set to start in 2027, but it stays well below what gas-powered cars already pay, so it's not expected to slow things down much. As electric cars take a bigger share of the market, sales of traditional gas and hybrid vehicles have fallen 16% so far this year. None of this changes rebate programs or incentives available to homeowners elsewhere, but it's a sign of how quickly a country's car market can flip once electric models become cheaper to own and run than gas ones. Tesla has not yet begun deliveries in Uruguay, so this growth has all happened without it.

CleanTechnica