Energy efficiency news.
Rebate updates, policy changes, and technology developments — aggregated from 50+ sources, AI-enriched, and scored for relevance.
EVE Energy signs 206 GWh battery framework with storage supplier Fluence
Two big players in the battery world have made a large, long-term deal, though it's more about industrial supply chains than anything homeowners will see soon. Chinese battery maker EVE Energy has agreed to supply U.S. storage company Fluence with up to 206 GWh of batteries between 2027 and 2031. The first firm commitment is 16 GWh in 2027, with another 190 GWh reserved for the following four years. Fluence builds the large battery systems that utilities and grid operators use to store electricity, not the kind that goes into a home battery setup. The deal is a framework agreement, meaning the two companies still need to work out specifics like pricing, battery chemistry, and delivery schedules through future orders. EVE itself cautioned that policy changes or market shifts could affect how much of this actually gets built. Fluence, meanwhile, has had recent troubles: it recently cut its 2026 revenue forecast due to production delays and supply problems at its U.S. manufacturing operations, and disclosed $15 million in costs tied to setting up this kind of international supply deal. For homeowners, this news mostly signals how tangled global battery supply chains have become, with U.S. tariffs and sourcing rules increasingly shaping which countries' batteries end up in American energy storage projects. It doesn't point to any near-term change in home battery prices or availability, but it's a sign of how much of the battery storage that powers the electric grid — and eventually helps support things like home solar and EV charging — depends on deals like this one working out as planned.
Texas records suggest OCI is bringing Elite Solar to Mission Solar Energy manufacturing site
Mission Solar Energy, a longtime U.S. solar panel maker in San Antonio, Texas, has hit a rough patch. The company, owned by South Korean firm OCI, has mostly supplied panels to homeowners and residential installers. But its president told federal trade officials that cheap solar cell imports from India, Indonesia and Laos have undercut its prices so badly that the plant went from more than 200 workers to 70 by 2025, and has now temporarily stopped manufacturing altogether. That trade case is part of a broader federal investigation into unfairly priced solar imports. At the same time, new construction filings suggest a turnaround may be coming. Mission Solar had built a large warehouse addition years ago as part of a plan to expand to 1 gigawatt of panel-making capacity, a plan that stalled. Now, permit filings show $15 million earmarked to convert that warehouse into a factory for Elite Solar, a Singapore-based panel brand with ties to OCI, with construction starting in October and finishing by June 2027. For homeowners, this doesn't change anything immediately about buying panels or getting rebates. But it's a reminder that where solar panels are made, and whether that production stays in the U.S., can shift quickly. If you're comparing panels for a home installation, brands and manufacturing locations tied to this Texas facility could look different in a year or two.
BMW begins iX3 deliveries early in the US as demand surges
This is car news, not a home energy upgrade story, but here's what happened for anyone curious. BMW has started delivering its new electric SUV, the iX3, to US customers earlier than planned. Deliveries were originally set to begin September 25, 2026, but dealers were told to start on September 16 instead, due to strong demand. BMW says the car has racked up more than 100,000 orders worldwide, and the company has added a third production shift at its plant in Debrecen, Hungary, to keep up. The 2027 BMW iX3 50 xDrive starts at $61,500 and has an EPA-estimated range of up to 434 miles. It can charge at up to 400 kW, adding 231 miles of range in as little as 10 minutes. Inside, it uses BMW's newer interior design, with a 17.9-inch central touchscreen and a 43-inch display that stretches across the base of the windshield. None of this touches home energy upgrades, rebates, or weatherization programs. If you're weighing an EV purchase alongside home electrical work, like adding a charger or upgrading your electrical panel, this is simply a note that a new higher-end electric SUV is now arriving at US dealers sooner than expected, with strong demand behind it.
Jackery SolarVault 3 Shows Potential To Scale From Balcony To Whole Home
Jackery showed off a new home battery system, called SolarVault 3, that's built to grow with you. Instead of buying one big battery upfront, you start small: a couple of solar panels and a 2.52 kWh main battery module, which cost a few hundred euros for the battery alone or a little over a thousand with panels. From there, you can add more 2.52 kWh expansion batteries yourself, no professional installer needed, as your needs or budget change. The panels are lightweight and flexible, and some versions work bifacially, meaning they capture light from both sides, so they perform better even when they're not angled perfectly toward the sun. The system can plug into a standard wall outlet to charge, and it can also pull in solar power directly. On the German market, output is capped at 800 watts when connected to the grid, though it can supply more when running independent of the grid. For those who want more capacity, Jackery also showed a combined setup linking three of these balcony systems together with a separate hub, pushing total storage up to 45 kWh, enough for many homes, and coordinated by software that manages energy use automatically. This system is aimed at renters or first-time homeowners who want to ease into battery storage rather than commit to a large, expensive, professionally installed system right away. It's designed to last more than 15 years, comes with a 10-year warranty, and can move with you if you relocate. Pricing and availability details beyond what's noted above were not specified.
Driven to Serve: How Taylor Searcy Turned Navy Service into Clean Energy Strategy at GM
This is a profile of Taylor Searcy, a Navy veteran who now leads clean energy strategy at General Motors, overseeing the power used at the company's factories and offices. There's no new program, rebate, or deadline here, but one detail is worth knowing if you own a GM electric vehicle: GM has developed bidirectional charging technology that can turn a compatible EV into a home backup generator during an outage. GM calls this "the grid in your garage." The catch is this isn't automatic. GM notes it requires a V2H-capable (vehicle-to-home) EV, a specific GM Energy charger and enablement kit, a properly wired home, and approval from your utility to connect to the grid this way. How long the car can power your house depends on the battery's charge, the weather, and how much you're running at the time. It's also not meant to run medical equipment. The rest of the piece covers Searcy's path from Navy officer to sustainability work, including GM's claim that it matched 100% of its U.S. electricity use with renewable energy in 2025, a first for a U.S. automaker. That's a corporate milestone about how GM powers its own operations, not something that changes rebates or programs available to homeowners. If you already own or are considering a GM EV, the bidirectional charging feature is the detail with any real relevance to your house, and it's worth asking a dealer or GM directly which vehicles and equipment currently qualify.
144 Tesla Megapacks power Australia’s first 8-hour grid battery
Australia has switched on its first eight-hour grid battery, built from 144 Tesla Megapacks at RWE's Limondale site in New South Wales. Most grid-scale batteries today discharge for only one to four hours. This one holds enough for a full eight, letting it soak up cheap midday solar power and release it slowly through the evening and into the night, when demand is highest and solar output drops off. The design is unusual: the battery charges roughly twice as fast as it discharges, filling up in about four hours during the sunniest part of the day, then stretching that energy out over eight hours. Sitting next to an existing solar farm, it's meant to smooth out the classic problem solar-heavy grids face — too much power at noon, not enough at dinnertime. The project was backed by a New South Wales government program that guarantees revenue for long-duration storage, and two more similar eight-hour batteries are already planned in the state. This is a utility-scale project, not something that changes what's available for a home battery system. But it points to where grid technology is headed: longer-duration storage that can carry solar power further into the evening, potentially easing strain on the grid during peak hours. For homeowners with solar panels or considering a home battery, the same basic idea applies at a smaller scale — storing cheap daytime solar to use later when rates or demand are higher.
Discounts on Kia EV9 Give It Ridiculous Price
Some dealers are cutting deep discounts on the Kia EV9, a large electric SUV that seats up to seven. In Texas, one dealership dropped the EV9 Light RWD from its $54,900 starting price to $41,414 — a $16,041 cut. That version has 230 miles of range, which covers most daily driving even though it's on the lower end for an electric vehicle. Other dealers are matching the trend. In Illinois, a Light Short Range model fell from $57,480 to $42,480, and a Light Long Range version — with 304 miles of range — dropped from $59,785 to $44,785. These prices put a full-size, seven-seat electric SUV in the same range as much smaller electric cars like the Tesla Model 3 or Kia Niro EV. For a homeowner comparing vehicles, the appeal isn't just the sticker price. An electric SUV like this typically costs less to run than a similarly sized gas SUV, since electricity is generally cheaper than gasoline per mile and electric motors need less maintenance. If your household already has home charging or is thinking about installing it, a discount like this could make a three-row electric option more affordable than expected. Sales of the EV9 are already up 12 percent this year compared with the same period last year, suggesting other buyers are taking notice of the price cuts too. Discounts vary by dealership and location, so what's available will depend on where you live and which dealer you check.
Where the Candidates Stand: Chaz Molder on Climate & Energy
Chaz Molder, the Democratic candidate for Tennessee's Congressional District 5 and current Mayor of Columbia, has laid out some positions on energy that could matter to Tennessee households, though his campaign hasn't addressed every topic. He supports steady federal backing for renewable energy, arguing that consistent policy helps the private sector innovate and can lower costs while making the power grid more reliable. He also counts nuclear power among the low-carbon resources he thinks Tennessee needs as electricity demand grows. On electric vehicles, Molder has championed new fast-charging stations in Columbia, saying they support EV growth and a cleaner future for the region. Affordability is a stated priority of his campaign, with a general pledge to lower everyday costs for Tennessee families, farmers, and seniors, though no specific energy-bill proposals are detailed. Molder has also weighed in on data centers, a growing issue for utility customers. He backs a temporary pause on new data center approvals in Memphis and Columbia until communities get clearer answers about effects on electric bills, air quality, and neighborhoods. He's also voiced support for the Tennessee Valley Authority's move to charge data centers higher rates specifically so the infrastructure needed to power them isn't paid for by regular TVA customers. That stance could be relevant if you're a TVA customer, since it affects who covers the cost of new power infrastructure. His views on climate change and energy justice haven't been confirmed in public statements or on his campaign website.
Google-backed pilot unlocks first environmental certificate revenue stream for battery storage
A pilot project backed by Google has tested a new way to pay for grid batteries: selling the "shift" of clean energy from when it's generated to when it's actually needed. Companies like Quintrace, esVolta, and LevelTen Energy ran a three-month test using two large battery projects in the west, storing surplus solar power at midday and releasing it during evening demand peaks. In total, the batteries shifted 9.2 gigawatt-hours of clean energy across different hours of the day. The idea addresses a mismatch in how companies currently claim "clean energy" use. Most corporate renewable energy deals are tracked on an annual basis, but batteries work hour by hour. As tracking standards move toward requiring hourly proof of carbon-free power, this pilot created a system to verify, hour by hour, how much clean energy a battery actually stored and delivered, accounting for the small losses that happen during charging and discharging. Google paid for this "time-shifting" service directly, without taking on the operational risks or long-term contracts usually tied to battery projects. This isn't a program homeowners can sign up for — it involves utility-scale batteries and corporate energy deals, not home solar or battery systems. But it points to a broader shift in how battery storage gets valued and paid for. If this kind of hourly clean-energy accounting becomes standard, it could eventually shape the incentives and market rules that affect home battery and solar programs too, though nothing here changes the rebates or credits currently available to individual homeowners.
Podcast Episode 755: A Talk with Tedd Benson at the FHB Summit
This week's Fine Homebuilding Podcast features a conversation with Tedd Benson, a longtime timber-frame builder, recorded live at the 2026 Fine Homebuilding Summit. Host Ben Bogie talks with Benson about his path into home building, which started when moving his own family from a poorly built house into a well-constructed one changed how they lived. Benson also discusses how he grew his building businesses over the decades and why he thinks innovation matters for the construction trade going forward. The episode is more of a career retrospective and industry conversation than a how-to guide. It touches on the values behind good building rather than specific products or techniques, so there isn't a project or rebate tied to this one. Still, the underlying idea, that a well-built house can genuinely change how comfortable and livable a home feels, is worth keeping in mind if you are weighing bigger upgrades to your own place. If you want to hear the full discussion, it runs a little over an hour and is available wherever the Fine Homebuilding Podcast is posted. It is part of the site's ongoing series of weekly episodes on building, remodeling, and design, aimed at anyone curious about the craft and science behind home construction, not just professionals in the trade.
Volkswagen’s EV van drove through 92 countries to set a new Guinness World Record
A Volkswagen ID. Buzz, the electric version of VW's van, just set a Guinness World Record for the most countries visited in a continuous journey by a battery-powered vehicle. Driver Rainer Zietlow took the van 99,767 km (about 62,000 miles) through 92 countries over 445 days, crossing six continents from Germany through the US, Africa, South America, the Middle East, Southeast Asia, Australia and China. The trip required more than 300 charging stops and 16 container ship crossings, but the van had no technical breakdowns along the way. After the journey, testing group TÜV Nord checked the van's battery and found it had retained 95.75% of its original capacity, a sign that heavy long-distance use didn't wear it down much. Zietlow said the trip showed real advantages over a gas or diesel van, since he avoided problems like fuel contamination, oil changes, and engine overheating that can come up in rougher parts of the world. He expects electric vehicles to keep closing the gap with gas engines as batteries and fast-charging improve. This isn't a story about a new rebate or product homeowners can buy, and it doesn't have anything to do with home energy upgrades directly. But it's a real-world stress test for EV batteries and charging reliability, useful context if you're weighing an electric vehicle alongside home charging or solar plans. The van tested here, the ID. Buzz Pro Long Wheelbase, uses an 86 kWh battery and can charge from 10% to 80% in under 30 minutes on a fast charger.
Podcast: Tesla Roadster gets a date, VW XL1 comes back electric, BYD’s new Tesla fighter, and more
This is a podcast episode about cars and EVs, not home energy upgrades, so there isn't much here that touches your own house directly. The episode covers Tesla's new Roadster reveal set for October 1, a redesigned Supercharger design meant to speed up charging station buildout, and safety data on Tesla's driver-assist crashes. It also touches on new electric vehicle models from Volkswagen, BYD, Hyundai, and Kia, along with a note on Chinese automaker BYD undercutting Tesla's Model 3 price and a warning from Hyundai that cheaper Chinese EVs could soon reach the US market. None of this involves home weatherization, heat pumps, rebates, or other house-focused upgrades. If you're weighing an EV purchase alongside home energy work, the main thing worth knowing is that vehicle prices in the EV market keep shifting, with more competition and lower price points showing up from multiple manufacturers. But there is no news here about home electrical upgrades, charging equipment for your house, or rebate programs tied to EV ownership. For homeowners tracking energy-efficiency programs, this piece has nothing new to report. It's aimed at readers following the broader EV and green-transportation industry, not at anyone deciding on insulation, heating systems, or home electrical work.
Anker SOLIX E10 system sale starts from exclusive $3,799 low, Heybike ALPHA mid-drive e-bike $1,099 low, EcoFlow, more
This week's deals roundup includes a few items worth a look if you're weighing home energy or battery backup upgrades. Anker's SOLIX E10 whole-home backup system, a battery setup meant to keep your house running during an outage, is on sale with exclusive bonus savings starting at $3,799. EcoFlow also has a flash sale on its DELTA 3 Ultra Plus power station, a 3,072Wh battery that can pair with solar panels to charge, bundled with a 500W modular solar panel for $1,899. For those looking at electric yard equipment, EGO's Multi-Head System with an 8-inch carbon-fiber edger attachment has dropped to a new low of $173. Roborock is also offering its RockMow X115H and X130H robot mowers at all-time lows starting at $1,500. Other smaller discounts include a Greenworks 24V 4.0Ah battery two-pack and Meross's two-zone smart water timer, which can help manage irrigation more efficiently. Outside the home energy space, there's an exclusive $700 discount on Heybike's ALPHA all-terrain mid-drive e-bike, bringing it to $1,099, plus leftover deals from earlier in the week, including a Tenways e-bike sale with savings up to $807 and a bundle on the Mammotion LUBA Mini 2 AWD robot mower. As with any sale roundup, prices and availability can change quickly, so it's worth checking current listings before deciding if any of these fit your plans.
PacWave Opens—A Giant Leap for Marine Energy
A new test site for wave energy just opened off the Oregon coast, called PacWave South. It's the country's first grid-connected, open-ocean facility built specifically to test devices that turn ocean waves into electricity. Led by Oregon State University with funding from the U.S. Department of Energy, the site opened after 15 years of planning and construction. It sits about 7 miles offshore and can host up to 20 wave energy devices at once, feeding power through undersea cables to an onshore facility, with the potential to send up to 20 megawatts to the grid. The significance is mainly for the wave energy industry, not for individual homeowners right now. PacWave lets companies test their technology in real ocean conditions under a single 25-year federal permit, instead of each developer having to get its own environmental approvals. It also gives their results international accreditation, which matters for attracting investors and insurance before these devices can be sold commercially. For now, this is early-stage infrastructure development, not a technology you can put on your house or add to your utility bill. Wave energy is still years away from being a mainstream power source. If it eventually scales up, it could add more clean electricity to regional grids, including in Oregon, but there's no rebate, program, or purchase decision here that affects your home today.
Trump’s War On Wind Turbines Takes Another Ludicrous Turn
The Department of Energy has folded its wind and solar offices into a single new group, the Integrated Energy Systems Office. Inside that office, wind power now falls under a branch with a new name: "aeromechanical energy systems." The rebrand doesn't come with new money. The office lists only one open funding opportunity right now, and it's for space-based solar, not wind. Everything else tied to wind is listed as "under review," with no timeline given. This is happening against a broader effort by the Trump administration to slow wind power, especially offshore wind. A federal judge ruled last year that a president can stop issuing new offshore wind leases, which blocks most new projects since offshore leasing is federally controlled. Separately, the Department of Defense froze the routine permit-review process for wind farms with turbines over 200 feet tall, a process that also involves the FAA. Nineteen state attorneys general sued over that freeze, and a federal judge ruled in August that the freeze was illegal. None of this changes rebate programs, tax credits, or incentives for home energy upgrades. It's a story about federal wind-energy policy and bureaucratic reshuffling, not about homeowner programs like weatherization assistance or heat pump rebates. If you're weighing a home energy project, this doesn't affect what's available to you directly, though it does show that the wind side of the country's power mix is facing continued political and legal headwinds at the federal level.
ReFuelEU’s First Year Shows the Mandate Works
This one is about aviation fuel policy in Europe, not home energy upgrades, so it has little direct bearing on your house. A new report on the EU's sustainable aviation fuel (SAF) mandate found that airports supplied 1.1 million tonnes of SAF in 2025, or 2.8% of all aviation fuel, beating the required 2% target and up sharply from 0.6% the year before. The report also flagged problems. Most of that fuel came from used cooking oil and animal fats, feedstocks prone to fraud or already needed by other industries, and 85% of the raw materials were imported, mostly from China, up from 69% the year before. Meanwhile, "e-SAF," a synthetic jet fuel meant to cut emissions further, has around 60 projects in development across Europe but none have reached the stage of a final investment decision, meaning money is not yet committed to build them. The report's authors argue the EU should keep its SAF targets in place to give investors confidence, push harder to get e-SAF projects actually funded and built, and reduce reliance on imported waste oils. None of this changes rebates, equipment costs, or programs available to homeowners. It is a policy story about how Europe fuels airplanes, worth knowing if you follow climate and energy news broadly, but it does not affect decisions about insulation, heat pumps, or other upgrades to your own house.
XPeng shops its self-driving tech to automakers — Tesla found no takers
This story is about self-driving car software, not home energy upgrades, but there's a small note worth passing on if you drive an electric car or are thinking about one. The main news: Chinese EV maker XPeng is trying to sell its self-driving and smart-cockpit technology to other automakers, following a deal it already has with Volkswagen. Tesla has been trying to do the same thing with its "Full Self-Driving" (FSD) system for years and hasn't landed a single outside customer, reportedly because other automakers don't want to take on liability if the system fails. The technical difference: XPeng's cars drive mainly on cameras, like Tesla's, but XPeng kept radar and other sensors as a backup safety system running separately from the main driving software. Tesla removed those extra sensors, relying on cameras alone. That backup layer is one reason other companies find XPeng's system easier to trust and insure. None of this changes any rebate, tax credit, or program that affects your house. It's simply a look at how the self-driving car market is shaping up. If you drive or plan to drive an EV, the article's writer notes that charging it from home solar panels can cut your fuel costs, since electricity rates have been rising, but that's a general aside and not tied to this specific piece of car-technology news.
The hidden power systems behind AI
This is a podcast episode about the electrical systems inside AI data centers, not something with a direct action for homeowners. Still, it points to a trend worth knowing about: the huge computing centers that power AI are changing how they use electricity and batteries, and that has ripple effects on the broader grid. Data centers used to keep batteries around for one reason, to keep servers running for a few moments until backup generators started. Now those batteries do more. They smooth out spikes in electricity demand, work with power generated onsite, and act as a buffer for the local grid. The discussion also touches on a shift from standard AC (alternating current) wiring to higher-voltage DC (direct current) systems inside these facilities, a change in how power moves from the source to the computer chips. None of this changes anything about rebates, upgrades, or costs for your own house right now. But data centers are becoming major users of electricity and batteries, and the choices they make about grid support and backup power can affect how utilities plan capacity and pricing in the areas where these facilities operate. It is a sign of how much energy infrastructure is being reshaped by AI's power demands, even if the direct link to a homeowner's electric bill or upgrade plans isn't spelled out here.
BYD Planning 4 Factories in Europe
Chinese automaker BYD is planning to build out a bigger footprint in Europe: three vehicle assembly plants and one battery factory. Production has already started at its first European plant in Hungary, and the company expects to decide on a second manufacturing site by the end of the year. Spain and France are among the preferred locations, and BYD is looking to buy and refurbish an existing factory rather than build new. The move is largely a response to high EU tariffs on electric vehicles made in China, which push BYD to manufacture inside Europe if it wants to compete there. Europe is a huge market for new-car sales, but electric vehicles still don't make up the majority of sales in most countries, so BYD sees room to grow. For homeowners, this doesn't change anything about home energy upgrades or rebates. It's a sign that more electric vehicle manufacturing and competition may be coming to Europe over the next few years, which could eventually affect EV prices and availability there. It has no direct bearing on U.S. weatherization programs, heat pump incentives, or other home efficiency rebates covered here. This is purely industry news about where a major EV maker plans to build factories.
Waymo’s Next Target: Singapore
This news is about self-driving taxis, not home energy upgrades, so it does not affect your house or any rebate program. Waymo, the robotaxi company already running driverless cars in more than a dozen US cities, plans to launch service in Singapore in 2028. Testing vehicles will start arriving there in the coming months to map roads and gather data ahead of that launch. Singapore has strict rules for self-driving cars. Before Waymo can carry passengers, it needs approval from the city's Land Transport Authority, and its vehicles must pass a safety review run by the Centre of Excellence for Testing and Research. Waymo has already set up a local company there and joined a government committee on autonomous vehicles. The move follows Waymo's recent expansion into the UK, Germany, and plans for Japan next year, showing the company is moving beyond the US market on a fairly slow, deliberate timeline. None of this involves home electrification, weatherization, or energy rebates, so there is nothing here for you to act on around your own house. It is simply a sign of how fast robotaxi service is spreading to new countries, which may be of interest if you follow clean transportation news generally.
Massachusetts ups winter energy discounts for homes with heat pumps
Massachusetts electric utilities National Grid and Unitil are cutting winter electricity rates even further for homes with heat pumps, starting November 1. A heat pump is a system that both heats and cools a home using electricity, and it's seen as a key replacement for gas or oil furnaces. Massachusetts was already the first state to require major utilities to offer lower winter rates for heat pump households, a discount that saved more than 65,000 customers over $37 million last winter. The new rates go further by also lowering transmission charges, the fees that pay for moving power long distances, not just local delivery costs. For a household using 600 kWh a month, this should mean an extra $16 to $21 in monthly savings on top of last year's discount. The idea behind these rates is that heat pumps use more power in winter, when the grid has spare capacity, so charging heat pump owners the same delivery rates as everyone else doesn't reflect actual costs. With the new pricing, an analysis by the group Switchbox found more than half of Massachusetts households would now save money by switching from gas heat to a heat pump. Massachusetts remains the only state requiring this kind of rate for major utilities, though similar ideas are being tried or studied in Minnesota, Maine, New York, and Rhode Island. If you're in Massachusetts and already have a heat pump, or are thinking about installing one, this rate change is worth checking with your utility about, since it directly affects what you'd pay to run it this winter.
With Fall and Winter Around the Corner, Heat Pumps Offer Cost-Effective Heating and Cooling Options
If you're a Connecticut homeowner thinking about a heat pump before winter, there's a discount on financing worth knowing about. The Connecticut Green Bank, working with Energize CT and local lenders, is offering a reduced 1.99% interest rate through December 31, 2026 on its Smart-E loan program for heat pump projects. This covers air source heat pumps, ducted or ductless mini splits, geothermal heat pumps, and heat pump water heaters. Heat pumps use electricity to both heat and cool a home, often more efficiently than furnaces or traditional air conditioners. The special rate applies to loans up to $25,000 with 5-year terms and no penalty for paying them off early. To qualify, you need to be an Eversource or Avangrid electricity customer, and your project must be approved for an Energize CT heat pump rebate. A previous version of this offer, running from September 2025 through July 2026, generated more than $8 million in financing across over 350 loans. Beyond heating and cooling, Smart-E loans can also finance more than 90 other home upgrades, including solar panels, insulation, windows, wells, septic systems, and health and safety improvements. More than 10,000 homeowners have used the program so far to lower energy bills and improve comfort in their homes. Details on eligibility, participating contractors, and lenders are available through the Connecticut Green Bank's website.
Grid congestion cost the US a record $17 billion last year
The cost of moving electricity around the country's power grid hit a record $17 billion in 2025, up from $12 billion the year before, according to a new report from Grid Strategies. This "congestion" cost happens when power lines don't have enough capacity to move cheap electricity from where it's generated to where people need it, forcing grid operators to run more expensive local power plants instead. Those extra costs tend to flow through to electricity bills over time. The jump comes from a mix of causes: not enough new transmission lines being built, last year's extreme summer heat driving up demand, and high natural gas prices that widen the price gap between regions. The grid operator covering much of the mid-Atlantic and Midwest, PJM, had the highest costs at $3.2 billion, while Texas's ERCOT followed at $2.5 billion, driven partly by data centers and oil and gas activity straining the grid. The West, which lacks a unified grid operator across most of the region, has long had the highest congestion costs in the country, though those are harder to measure precisely. Fixes are underway but slow. Texas approved a major transmission expansion in December that won't be finished until the early 2030s. Other regions are testing software that reroutes power around congested lines, which has already saved one grid operator tens of millions of dollars. For homeowners, this mostly matters as one of the underlying forces pushing electricity prices upward nationally, alongside rising demand and fuel costs, rather than something tied to any single state's utility bill today.
Grid congestion cost the US $17 billion last year
The nation's power grid isn't moving electricity as efficiently as it should, and the cost of that inefficiency hit $17 billion in 2025, up from $12 billion in 2024. This "congestion" happens when cheap power exists in one place but the transmission lines can't carry enough of it to where demand is high, so grid operators have to fire up pricier local power plants instead. That gap between low-cost and high-cost areas has been growing for years, driven by a lack of new transmission lines, extreme weather like last summer's heat, and high natural gas prices. The costs vary widely by region. PJM, which covers much of the mid-Atlantic and parts of the Midwest, had the highest congestion costs at $3.2 billion, largely from summer heat waves overwhelming its system. Texas's grid operator, ERCOT, came in at $2.5 billion, with wind-rich West Texas unable to export enough power and the booming Permian Basin unable to import enough. The Midwest grid operator MISO saw costs jump 23% due to high gas prices and storm-related outages. For homeowners, this mostly shows up as upward pressure on electricity bills, especially if you live in one of these regions during peak demand periods. Fixes are underway but slow: Texas approved a major transmission buildout in December, though those lines won't be running until the early 2030s. Other regions are testing software that reroutes power around bottlenecks, which has already saved money in the Midwest. None of this changes anything immediately, but it signals that grid-related cost pressures on electricity bills are likely to continue for a while.
Building Ω-Mechanical Systems
A Wisconsin couple, Clay Yapp and Danielle, built a 1,536-square-foot net-zero home largely on their own in Wauzeka (a cold climate zone), and the mechanical systems they chose show what it takes to heat and cool a very airtight, well-insulated house efficiently. Rather than buying a standard furnace or central air system, Clay ran a room-by-room heat-loss calculation (called a Manual J) to find out exactly how much heating and cooling the house actually needed. Because tight, well-insulated homes need far less capacity than typical houses, he sized the equipment small on purpose: a 9,000-Btu ductless heat pump (a compact unit that both heats and cools by moving heat rather than generating it) for the main floor, and a 6,000-Btu unit upstairs. Slightly undersizing the units, he explained, avoids the on-off cycling that wastes energy and actually improves the system's ability to pull humidity out of summer air. For fresh air, the house uses a fully ducted energy recovery ventilator (a system that swaps stale indoor air for outdoor air while recovering some of the heat or coolness from the air being exhausted), pulling humid air from the kitchen and bathrooms through a filter before it leaves the house. The broader lesson for any homeowner is that once a house is sealed and insulated well, mechanical equipment can often be smaller, cheaper, and more efficient than what a standard installer might otherwise size for a home of the same footprint.
Center for Green Schools Announces 2026-2027 School Air Quality Fellowship Cohort
The U.S. Green Building Council's Center for Green Schools has picked 53 school system leaders from 25 states to take part in a nine-month program aimed at improving indoor air quality in public schools. Running from September 2026 through May 2027, the School Air Quality Fellowship will help these facilities and sustainability staff build district-wide plans for cleaner air and more energy-efficient buildings. The districts involved serve more than 2 million students combined, ranging from small rural systems to large ones like the School District of Philadelphia. The program comes as schools face growing pressure from wildfire smoke, respiratory illness concerns, and new state rules on indoor air quality. Fellows will use a free toolkit, developed with the American Lung Association and other partners, to create air quality plans tailored to their districts while also managing energy costs. They'll get training, technical support, a paid professional credential, and travel support to attend a national conference in Austin, Texas, in 2027. For homeowners, this isn't a program you can apply for or a rebate you can claim. But if you have kids in public school, or live in one of the districts listed, it signals that your local school system may be working on ventilation, filtration, or HVAC upgrades in the coming school year. Better indoor air management in schools can also extend the life of heating and cooling equipment and reduce absenteeism tied to poor air quality, though any direct changes would depend on your specific district's plans.
Hitachi Energy commits $528 million for Mississippi transformer factory
Hitachi Energy is spending $528 million to build a new transformer factory in Gallman, Mississippi, its largest single investment in the country. Transformers are the equipment that steps electricity up or down as it moves through the grid, and they're currently in short supply nationwide. The new plant sits about 6.5 miles from Hitachi's existing Crystal Springs facility, will be more than twice the size, and will double output. Construction starts late this year, with production beginning in 2029. The old Crystal Springs site will then shift to warehousing and training. The project is expected to add more than 700 jobs. This is part of a larger $1.5 billion push by Hitachi to expand U.S. manufacturing, including projects in Virginia, Tennessee, and Pennsylvania, adding over 1,600 jobs combined. The company says it's responding to fast-growing electricity demand and a grid that needs more capacity to keep up. For homeowners, this doesn't change anything right away, but it points to a bigger issue: utilities have faced waits of up to four years for transformers and other grid hardware, which can slow down projects like new home connections, solar installations, or grid upgrades in your area. A recent federal order also now bars foreign-made transformers, inverters, and circuit breakers from the U.S. grid, adding more pressure on domestic factories like this one to catch up with demand. More U.S. production capacity, once it comes online years from now, could eventually ease some of those delays.
First Solar drops TOPCon patent complaint
First Solar has dropped a trade complaint it filed with the U.S. International Trade Commission over a solar panel technology called TOPCon (short for Tunnel Oxide Passivated Contact), a type of high-efficiency silicon solar cell used by many of its competitors. The complaint had asked the commission to block imports of TOPCon panels made by rivals including Canadian Solar, JinkoSolar, Trina Solar, and T1 Energy. If granted, that could have cut off a lot of solar panel supply and slowed projects nationwide. First Solar says it's backing off because of a separate federal action (called Section 232) that already places tariffs and a minimum price on imported polysilicon, the raw material used in most solar panels. The company argues that action now protects domestic manufacturers at the border, so it can shift its fight to U.S. courts instead. First Solar doesn't make TOPCon panels itself — it builds a different kind of panel called thin-film CdTe — but it owns TOPCon patents from a 2013 acquisition, and it's continuing separate lawsuits against those same competitors in federal court. For homeowners, this is mostly a manufacturers' legal dispute rather than something that changes rebates or installation costs right now. But it's worth watching: if the lawsuits succeed later, some TOPCon panel brands could face import restrictions or price changes, which could eventually affect the cost or availability of solar panels for home installations.
Smart Vapor Barrier For Ceiling in Cold Climate?
A homeowner in northern Michigan is renovating an old house with a wing that has an open, plank ceiling made of thick oak boards laid right on top of the exposed rafters. The attic above it was never insulated, and the owner wants to blow in cellulose or mineral wool to a high insulation level. The problem is that the boards have gaps between them, so loose insulation and dust could sift down into the room below. The owner asked what to install over the planks, from the attic side, to block that dust without trapping moisture inside the wood ceiling. People experienced in building science who answered the question explained that the real job of whatever material goes down is to stop air movement, not just moisture. Blocking air leaks also blocks most of the moisture that rides along with that air. One option is a specialty "smart" membrane that changes how much moisture it lets through depending on the season, which helps if the room will be air conditioned for long stretches in summer. But in this case, since the attic is vented and the plank ceiling itself breathes on both sides, plain plastic sheeting can work just as well, and is far cheaper. Another option is spraying a couple inches of foam directly onto the planks, which also seals gaps and adds insulation, though gaps wider than a hairline could let a bit of foam ooze through. Either way, sealing the edges of the barrier tightly to the surrounding framing matters most for keeping it effective.
Trump is stalling EV adoption. Here’s how states can step up.
The federal $7,500 tax credit for new and used electric vehicles is gone, eliminated by legislation the Trump administration signed last year. The administration has also frozen funding for EV charging infrastructure and weakened standards meant to expand the availability of EVs and plug-in hybrids. Meanwhile, gas prices have stayed above $4 a gallon for months, making the cost gap between fueling a gas car and charging an EV wider in most states. With the federal rebate gone, some states have stepped in with their own incentives. California's new MyFirstEV program offers an instant rebate to first-time EV buyers, funded through a partnership between the state and 13 automakers. Colorado expanded its Vehicle Exchange Colorado program, which now offers up to $15,000 off a new EV through state incentives alone, plus "ReCharge Coaches" who help residents understand what they qualify for. Delaware has a rebate program covering part of the cost to install EV chargers at apartments, condos, and other buildings. In Washington state, a credit union offers below-market loans for new or used EVs. If you're considering an EV, it's worth checking what your own state currently offers, since incentive programs and rebate amounts vary widely and change often. The federal credit that used to apply nationwide is no longer available, so any savings now depend largely on what your state has put in place to fill that gap.
Juneau can’t stop the floods, but it’s learning to see them coming
Juneau, Alaska has flooded every summer since 2023, when meltwater and rain built up in a basin next to the Mendenhall Glacier and burst downstream, sending record-high water through riverside neighborhoods. Homeowners have described losing pianos, appliances, and insulation, with repair bills reaching $150,000 in one case and $35,000 in another. Scientists expect these glacial floods to keep coming back for decades, so the city and residents have shifted from treating each flood as a one-time disaster to preparing for a recurring one. The main tool for that shift is a free online dashboard, launched in 2025, that translates glacier and river data into flood forecasts residents can actually use. More than 15,000 people checked it last year for real-time flood maps, water-level predictions, and explanations of how the basin fills and drains. Homeowners in the flood zone say it gives them enough lead time to move belongings, place sandbags, or evacuate before water arrives, and some check it daily or hourly during flood season. The city has also used the same flood data to decide where to install about 6 miles of temporary barriers, built with the Army Corps of Engineers, to shield homes along the Mendenhall River. There's no fix that stops these floods outright, but Juneau's experience shows how better forecasting and public data can give homeowners in a repeat-disaster zone more warning and more control over protecting their property, whether the threat is glacial flooding, hurricanes, or river flooding elsewhere.
Solar Energy Industries Association to Combine with Coalition for Community Solar Access, Strengthening Advocacy for Entire Solar & Storage Industry Across the Country
Two solar industry trade groups are joining forces. The Solar Energy Industries Association (SEIA), the largest national trade group for solar and storage, is combining with the Coalition for Community Solar Access (CCSA), which has represented community solar developers and businesses for about a decade. The merger takes effect in early October, with CCSA folding its staff, resources, and policy work into SEIA. For homeowners, this is mainly an industry and policy story rather than something that changes your options right away. Community solar lets people who can't install panels on their own roof — renters, or homeowners with shaded or unsuitable roofs — buy into a shared solar project and get credit on their electric bill. With CCSA now part of SEIA, there's a single, larger organization lobbying on behalf of the entire solar and storage industry, from big utility-scale projects down to home rooftop systems and community solar programs, at both the state and federal level. The announcement notes that solar and storage together made up more than 70% of new power added to the U.S. grid so far in 2026, and that battery storage had its biggest quarter ever in the second quarter of the year. That growth suggests more solar and storage options, including community solar programs, may keep expanding in various states. If you're weighing rooftop solar, a battery, or a community solar subscription, it's worth checking what's currently available and what incentives exist where you live, since programs and eligibility vary by state.
AprilAire Introduces 1-Inch MERV 11 Air Filter
AprilAire has released a new one-inch air filter rated MERV 11, a scale that measures how well a filter traps dust and other small particles. The filter uses what the company calls TriPure Technology, which it says removes up to 88% of household dust and pollen while keeping airflow resistance low enough not to strain a home's heating and cooling system. For homeowners, the main selling points are cleaner air and less frequent filter changes. AprilAire says the filter lasts up to six months, compared to the one- to three-month lifespan typical of many standard one-inch filters. That means fewer trips to swap it out, and it could fit naturally into a twice-yearly maintenance routine, such as changing it each spring and fall. One-inch filters are the standard size in most home HVAC systems, so this is a straightforward swap rather than an equipment upgrade. If your system currently uses a lower-rated filter, moving to MERV 11 could improve indoor air quality without the higher airflow resistance that some high-efficiency filters cause, which can strain a furnace or air conditioner's blower over time. The filter is sold in various sizes through AprilAire's distributor network, so availability and pricing will depend on where you look.
Global residential storage market to hit 46.1 GWh in 2026
Home battery systems, which store solar power for use when the sun isn't shining, are growing fast worldwide. A new industry report projects global home battery capacity will reach 46.1 gigawatt-hours in 2026, with growth spreading well beyond Europe. Germany, Italy, Austria, the Netherlands, and the UK remain strong markets, and Ukraine is emerging as a fast-growing one. But Australia is now expected to become the single largest home battery market in the world in 2026, driven by its Cheaper Home Batteries Program, a subsidy launched in July 2025. Growth is also picking up in Pakistan, the Philippines, Vietnam, and Japan, often in places where power outages and high electricity prices push homeowners toward battery backup. In the U.S., home battery demand continues but remains smaller than these other markets. On the product side, a few trends are shaping what's available. All-in-one solar-plus-battery systems that are compact and easier to install are becoming more common, from brands including Sigenergy, GoodWe, Sungrow, and Huawei. Manufacturers are also building systems that coordinate solar, batteries, EV charging, and heat pumps together, aiming to manage household energy use and lower costs as more homes add electric vehicles and heat pumps. Some systems now support vehicle-to-home charging, letting an EV's battery power the house. Battery makers are also adding artificial intelligence and connections to "virtual power plants," networks where utilities tap home batteries for grid support in exchange for payments to homeowners, a feature gaining traction in Europe and Australia. No single manufacturer dominates the market yet, so competition and features are likely to keep evolving. Homeowners considering a battery system may find it worth checking whether similar subsidy programs or utility payment options exist where they live.
House passes ratepayer protection bill to limit data center cost shifts
The U.S. House passed the Ratepayer Protection Act this week in a 417-3 vote, aimed at keeping the cost of serving big data centers off the bills of regular electricity customers. The bill would ask state regulators to consider rules requiring data centers and other large power users (loads bigger than 100 megawatts) to cover the full cost of any new power plants, transmission lines, or local grid upgrades built to serve them. It would also require these large customers to put up money upfront before utilities build that infrastructure, and to keep paying if they back out of a power contract early. For homeowners, this is about who pays when a massive new data center hooks up to the grid. Many states already require this kind of cost-sharing through what are called large-load tariffs — rules that make big users pay their own way instead of spreading those costs across everyone's bill. Only 13 states currently have no such rules, and a few of those are considering adding them. The federal bill would largely reinforce that trend rather than create something new. The bill still needs Senate approval, which analysts say is unlikely before the November midterm elections. A competing Senate bill, the GRID Savings Act, would go further by having federal regulators set nationwide rules. Whether or how strongly ratepayers end up protected from data center costs may depend on what your state has already put in place, since local tariff rules vary widely and are still evolving.
The 1992 Efficiency Standard That Transformed HVAC
This year marks a milestone for a law that quietly reshaped every heating and cooling system in American homes. The National Appliance Energy Conservation Act, signed in 1987 and taking effect in 1992, set the country's first minimum efficiency standards for residential furnaces, air conditioners, and heat pumps. Before that, there were no federal efficiency floors at all. Many air conditioners and heat pumps ran at just 6 to 8 SEER (a measure of cooling efficiency), and furnaces often hit only about 70% AFUE (the share of fuel actually turned into heat). The 1992 rules required central air conditioners and heat pumps to hit at least 10 SEER, heat pumps to reach 6.8 HSPF (a heating-efficiency rating), and gas furnaces to meet 78% AFUE. The change caused some short-term friction, as dealers worked through stockpiles of older equipment and manufacturers absorbed higher production costs. But it also pushed the industry to improve compressors, heat exchangers, and blower systems, laying groundwork for the far more efficient equipment sold today. It also stopped a patchwork of different state rules from forcing manufacturers to build separate products for separate markets. For homeowners, this history explains why a furnace or air conditioner from the 1980s performs so much worse than a modern one. Today's systems commonly exceed 16 SEER2, more than a third more efficient than the original 1992 minimum, which is one reason replacing very old equipment can lower energy bills.
New Life For EV Charging Stations Trump Tried To Kill
A federal program that pays for public EV fast-charging stations along highways is still moving forward, despite an attempt by the Trump administration to shut it down. The program, called NEVI (National Electric Vehicle Infrastructure), was set up under the 2021 infrastructure law with $5 billion to help states build a connected network of fast chargers on interstates and other major roads. In early 2025, the administration ordered the program suspended, but several states sued, arguing the move broke the law since Congress had already approved the money. By August 2025, the Department of Transportation reversed course and issued new guidance letting states keep building. The result is that charging stations funded through NEVI keep going up. North Carolina, for example, just announced seven new charging locations, adding to five built in 2024. The state's total NEVI award is $109 million, and this latest round covers $14.4 million of that. North Carolina expects its full share of funding to support three years of construction, eventually reaching rural areas beyond the main highways. Other states, including Pennsylvania, have also continued opening NEVI-funded stations. For homeowners, this mainly matters if you drive an EV or are considering one: the public charging network you'd rely on for longer trips is still expanding, state by state, even though funding and staffing have been slowed by cuts at the federal level. Separately, some cities are pushing their own charging expansions, like New York City adding 600 curbside chargers tied to rules for licensed taxi and for-hire vehicles.
FlexGen and Lightshift Energy team up to deliver 80 MW of batteries in Virginia and New England
Two energy companies, FlexGen and Lightshift Energy, are expanding a partnership to build large batteries that store electricity for the grid in Massachusetts, Virginia, and Vermont. Lightshift builds and runs the battery sites, while FlexGen provides the software that manages them. Most of these projects supply power to municipal electric utilities, meaning the local utility that serves a town or city, rather than directly to individual homes. The companies have already finished six projects, including battery sites in Groton, Massachusetts, and Danville, Virginia, which they recently upgraded to store more power and run more efficiently. They now plan to build ten more sites across New England and the mid-Atlantic, adding over 55 megawatts of power capacity and 200 megawatt-hours of storage. One of these, in Vermont, will be a 16 megawatt battery built for the chip manufacturer GlobalFoundries and is described as the state's largest energy storage project. For homeowners, this kind of project does not mean a battery shows up at your house. Instead, these large-scale batteries help utilities manage demand on the electric grid, storing power when it is cheap or abundant and releasing it when demand spikes. The companies say this approach can help keep costs down for the communities served by these utilities and make the local grid more reliable, which could mean fewer outages or steadier rates over time, depending on where you live and which utility serves your area.
Burlington advances on-site solar strategy across distribution network
This is corporate news, not something that changes what's available to homeowners, but it shows where the retail industry is headed with solar. Burlington, the off-price retail chain, is putting solar panels on more of its distribution centers and warehouses. The company has plans moving forward at a new facility in Ellabell, Georgia, and an upcoming site in Arizona, plus two new distribution centers in California expected to come online in 2026. Burlington hasn't shared cost or system-size details. The bigger picture: Burlington already gets 25% of its electricity from renewable sources, beating its own goal of 20% by 2030. It has also signed solar deals in New Jersey, California, and Massachusetts, and added renewable electricity contracts across the Midwest, Mid-Atlantic, and West Coast. Other big retailers are doing the same. Gap is aiming for 100% renewable electricity by 2030 and is already at 46%. Walmart wants 100% renewable power by 2035 and has installed 125 megawatts of solar across 303 U.S. facilities. TJX has solar at distribution centers in five states, and Best Buy just added its first solar field at a California warehouse, generating enough electricity to power that site. None of this affects rebates or programs available to your own house. But it's a sign that solar is becoming a standard cost-saving move for large buildings, the same logic that applies to a home solar system, just at a much bigger scale.
Fuel cells, geopolitics, and the solar growth curve
This is a broad industry discussion about energy markets, and most of it deals with big-picture trends rather than anything homeowners need to act on. One useful thread: U.S. electric vehicle sales are down 21% this year, which analysts tie mainly to the loss of federal EV tax credits, not to oil prices from the Iran war. If you were counting on federal incentives to help pay for an EV, it's worth checking what's still available, since many of those credits have already disappeared. On solar, the outlook is more encouraging for anyone considering panels for their own roof. Despite a widely cited forecast predicting flat solar growth for the rest of the decade, the discussion argues that prediction is likely too conservative — pointing out that solar forecasts have consistently underestimated actual growth for 20 years running. The reasoning: solar remains fast to build, U.S. manufacturing capacity is expanding, and costs remain competitive even as tariffs add some pressure. That suggests solar equipment and installation options should keep improving rather than stalling out. The rest of the conversation covers utility-scale issues — data center growth straining local grids, possible future electricity-rate subsidies from big data centers in small utility areas, and long-term grid capacity build-out — none of which point to specific new programs or rebates homeowners can use right now. It is more a snapshot of where the energy industry is heading than news requiring any decision at home today.
Farm Electrification Should Start With The Work, Not The Tractor
This piece is about farms rather than typical houses, but the thinking behind it applies to any home planning an energy upgrade. The argument: don't fixate on the hardest, flashiest piece of equipment to electrify (for farms, that's the big diesel tractor) while ignoring easier, cheaper wins elsewhere. A farm has many separate jobs — cooling, heating, pumping, ventilation — each with its own costs and payback timelines, and some of those should switch to electric now even if the tractor can't yet. The same logic applies at home. The equipment that seems hardest to replace, like a car or a large piece of machinery, isn't necessarily where you'd start. Stationary, always-on loads such as water heating or space heating often have mature, cost-effective electric replacements (like heat pumps) already available, with paybacks that can be quick. The article cites an old case where a heat pump replaced kerosene heating on a farm, cutting annual energy costs by roughly two-thirds with a payback of under two years — an extreme example, but it shows how targeting the right load can matter more than chasing the "hardest" upgrade. The broader point for any homeowner sizing up an energy retrofit: separate your home's "jobs" — heating, cooling, hot water, cooking, driving — and evaluate each on its own economics and timing, rather than waiting for one perfect all-electric solution to arrive before act on anything.
No Blank Check for Data Centers: Big Tech Owes Communities a Fair Deal
This piece is a debate over who should pay for the massive electricity demands of new data centers, especially in Tennessee. Data centers run around the clock and need huge amounts of power, water, and grid infrastructure like substations and transmission lines. The concern is that these costs could get passed on to ordinary electric customers rather than the tech companies building the facilities. The Tennessee Valley Authority (TVA), the regional utility, recently approved a rate change expected to raise electricity costs for data centers by about 10 percent, aimed at making these facilities cover more of their own grid impact. But TVA is also planning huge investments — over $19 billion in coming years for power plants and transmission upgrades, with thousands of megawatts of new generation under construction. TVA has already raised base electric rates 4.5 percent and 5.25 percent in the past two years, and the piece questions whether the new data-center surcharge is enough to keep those costs off residential bills. Unlike most utilities, TVA has no independent state regulator overseeing its rate decisions. For homeowners, especially those served by TVA or living near a proposed data center, this matters because it touches directly on future electric rates and local quality-of-life issues like noise from cooling equipment. Knox County, Tennessee, currently has a one-year pause on approving new large data centers over 10 megawatts while these questions get sorted out.
Solid-state battery maker Factorial secures another big partnership
Battery maker Factorial Energy has partnered with Mitsui Kinzoku, a Japanese manufacturer, to help scale up production of solid-state batteries. These batteries are considered a next step beyond today's lithium-ion cells, promising more range and faster charging. Mitsui Kinzoku makes a key material called solid electrolyte, which it will mass-produce at a plant in Saitama, Japan, to pair with Factorial's battery platform, called Solstice. This isn't a product you can buy yet. It's part of a broader effort by Factorial to line up partners across the supply chain, following deals with automakers Mercedes-Benz, Stellantis, and Hyundai, as well as battery maker SK On, which supplies Ford and Volkswagen among others. Factorial says its battery technology offers notably higher energy density than standard lithium-ion batteries and can charge quickly, from 15% to 90% in under 20 minutes in testing. A modified Mercedes EQS using these cells drove over 745 miles on a single charge in earlier testing, and Stellantis has been road-testing a Dodge Charger prototype with the technology. For homeowners, this doesn't affect home batteries or rebates right now. It's aimed at electric vehicles first, with Factorial's CEO suggesting the technology could appear in EVs as early as 2027, likely starting with luxury or high-performance models before reaching mainstream cars. If you're weighing an EV purchase down the road, this is a sign that longer range and faster charging could become available in coming years, but nothing here changes home charging setups or costs today.
With one of the largest floating PV arrays in the US, Ohio village takes lead on solar power
The village of Monroeville, Ohio, has switched on a 6-megawatt floating solar array built on its own reservoir, making it one of the five largest floating solar systems in the country and the largest in Ohio. Instead of using farmland, the panels sit on 12 acres of water the village already owned, avoiding the land-use fights that have led about a third of Ohio's counties to restrict utility-scale solar projects since a 2021 state law gave them that power. This is Monroeville's second solar project, adding to a 4-megawatt ground-mounted array that's been running since 2017. With a population of just 1,300, the village now has roughly 13 times as much solar per resident as the rest of Ohio. The array was developed by D3Energy with Gardner Capital, which owns the system and sells the power back to the village, and built by Ohio contractor Appalachian Renewable Power. For homeowners, this isn't a rebate or incentive program you can apply for — it's a village-owned utility project. But it shows a growing trend of using reservoirs, ponds, and other existing water bodies for solar instead of open land, an approach also used recently in Delaware and Lima, Ohio. If your area has open water owned by a utility or municipality, similar projects could eventually affect local power rates or availability, even though they don't involve any action on your own property.
Mazama Energy raises $135M for superhot geothermal at Oregon volcano
A startup called Mazama Energy just raised $135 million to develop a new kind of geothermal power near Oregon's Newberry Volcano. The company drills wells into extremely hot rock deep underground to generate electricity, an approach known as enhanced geothermal, which fractures dry rock rather than relying on natural hot-water pockets the way older geothermal plants do. Last year Mazama said it built the hottest such well in the world, reaching 629 degrees Fahrenheit. The idea is that hotter rock means fewer, more efficient wells and cheaper power overall. The new funding round was led by investors including Centaurus Capital and Doerr Capital, with oil companies ConocoPhillips and Shell Ventures also putting money in. Mazama plans to use the cash for a project called Ceres, backed by the U.S. Department of Energy, which will test horizontal drilling designed to get 15 megawatts of power from a single well. Drilling is expected to start later this year, with testing in early 2027. This is not a program homeowners can sign up for or a technology available for houses. It is early-stage research into a power source that, if it works at scale, could eventually add more clean, round-the-clock electricity to the grid in parts of the western United States. Other companies, including Fervo Energy and Quaise Energy, are pursuing similar projects, showing more investor interest in this kind of geothermal power right now.
Sierra Club Strongly Opposes Bill to Give Legal Immunity to Fossil Fuel Companies
The U.S. House Judiciary Committee is considering H.R. 8330, a bill that would shield fossil fuel companies from lawsuits and laws holding them accountable for climate-related damage. The Sierra Club opposes the bill, arguing it would let oil and gas companies avoid paying for disasters linked to climate change while leaving taxpayers and local communities to cover the costs. The group notes that fossil fuel companies knew about climate change risks decades ago and spent money downplaying them, and points to a study estimating climate-related costs to the U.S. economy will top $1 trillion this year. This federal effort follows a similar pattern in some states. Utah recently became the first state to sign its own fossil fuel immunity law, and other Republican-led states have introduced comparable bills. Sierra Club chapter leaders in Vermont, Colorado, California, and Texas each pointed to local climate damage — flooding, drought, wildfires, extreme heat — as reasons Congress should reject the immunity measure rather than grant it. For homeowners, this isn't a program or rebate story — it's a policy fight over legal accountability for the fossil fuel industry. It doesn't change any current energy-efficiency incentives, rebate programs, or upgrade options available to you. It's worth knowing about mainly because it reflects the broader political debate over who pays for climate-related damage to homes and communities, a cost that increasingly shows up in insurance rates and disaster recovery funding.
Meta, Apex Clean Energy agree to 144-MW Texas solar PPA
Meta has agreed to buy power from a new 144-megawatt solar project, called Starling Solar, being built by Apex Clean Energy in Gonzales County, Texas. Under the deal, Meta gets exclusive rights to all the environmental credits from the project's power, and the project is expected to start operating in 2027 (though a grid operator report lists a slightly later date of January 2028). This adds to a growing partnership between the two companies, which now spans seven solar and wind projects totaling 1.2 gigawatts across Texas, Virginia, Illinois, Kansas and Iowa. This kind of deal is a corporate power purchase agreement, essentially a long-term contract where a big company like Meta commits to buying electricity and its associated clean-energy credits from a specific solar or wind farm. It's separate from Meta's other big Texas investments, including a data center in El Paso and a deal with another company, ENGIE, for a 600-megawatt solar project. For homeowners, this isn't something that changes your bills or your rebate options directly. It reflects a broader trend of tech companies locking up large amounts of new solar power to run data centers, which does add generation capacity to the Texas grid overall. There's no new program, incentive, or deadline here that applies to individual homes.
Open source semi: Windrose puts its electric truck online, for free
This news is about electric semi trucks, not home energy upgrades, but here's what happened. Windrose, a maker of electric Class 8 semi trucks, published the full engineering files for its E700 truck online for free. That's 1,023 parts from the truck's base model, available through what the company calls its 3D Viewer, along with an assembly map and parts list. The files are in the original design format, not a simplified export, so a machine shop could actually use them to reproduce a part decades from now. The point is repair and longevity. Heavy trucks are expected to run for around fifteen years, and buyers of trucks from newer manufacturers have always faced the risk that the company might not survive that long, leaving them unable to get parts. By posting the designs publicly, Windrose says any competent shop could machine a replacement part even if the company itself disappears, the way some other electric truck and bus makers have in recent years. None of this involves home energy equipment, rebates, or anything a homeowner would act on directly. It's a story about a shift in how one truck manufacturer is trying to reassure commercial buyers, using an open-source approach that's unusual in the auto and trucking industry. If you're weighing home upgrades like heat pumps or weatherization, this development doesn't change anything for your house.
Tesla to run public Megachargers at 3 Forum Mobility Semi depots
This is news about heavy-duty trucking infrastructure, not something that touches most homeowners directly. Tesla is partnering with Forum Mobility, a charging company, to run public "Megacharger" stations (fast chargers built for Tesla's electric semi trucks) at three depots in California that Forum owns rather than Tesla itself. The sites are in Ontario and Oakland, with a fourth Oakland-area depot reserved mostly for a fleet of more than 330 Tesla Semis. These stations use pull-through lanes so trucks can charge without unhitching trailers, and mix Tesla's charging hardware with a newer industry-wide standard called MCS, which can add up to 60 percent of range in about 30 minutes. The bigger picture: Tesla is choosing to operate chargers on other companies' property instead of building and owning every station itself, collecting a fee per kilowatt-hour of electricity used. Because the hardware works on an open standard, it can also charge electric trucks from other makers like Volvo and Daimler, not just Teslas. Forum plans more depots in places like Las Vegas, Phoenix, Houston, and Chicago. For homeowners, this doesn't affect home energy upgrades, rebates, or household electricity costs. It's relevant mainly to trucking fleets and to the buildout of the country's charging infrastructure for commercial vehicles, not passenger cars or home charging setups.
How Royal Mail will use AI to calculate supplier emissions
Royal Mail, the UK's postal service, is testing a new AI tool that estimates the carbon emissions tied to its supplier contracts before deals get signed. Built in six weeks by the company's head of climate strategy, the tool checks whether a new purchase — like buying equipment or signing a multi-year vendor contract — would push emissions past a set limit. If it does, the deal gets extra review. If not, it moves ahead without added screening. This is part of Royal Mail's effort to cut what's called Scope 3 emissions, the indirect emissions that come from a company's supply chain rather than its own operations, by 25 percent by 2030. Environmental factors already count for 10 percent of how Royal Mail scores vendor bids, and this tool adds a faster way to flag purchases with a bigger carbon footprint. It can also show tradeoffs, such as when a pricier supplier actually produces fewer emissions, giving the company more information before it decides where to spend money. For homeowners, this isn't a program you can sign up for or a rebate you can claim. It's a look at how a major company is using AI to track and reduce emissions in its own purchasing decisions, mainly around large-scale contracts like equipment and vehicles. Royal Mail plans to test the tool with part of its procurement team before expanding it further, including possibly to fuel and mileage tracking.