Energy efficiency news.
Rebate updates, policy changes, and technology developments — aggregated from 50+ sources, AI-enriched, and scored for relevance.
Duke Energy deals double whammy to its poorest North Carolina customers
Duke Energy customers in North Carolina are facing two changes at once. The company has proposed raising residential rates by about 9.5% over two years, which would add roughly $10 a month to the average bill starting in January. At the same time, a separate program that has given low-income households a $42 monthly bill credit is set to expire December 31, with no replacement announced. That credit, called the Customer Assistance Program, has automatically gone to about 80,000 households enrolled in one of two federal aid programs: the Low-Income Energy Assistance Program or the Crisis Intervention Program, both for households earning at or below 150% of the federal poverty level (about $50,000 for a family of four). Recipients also got referrals to free weatherization help, such as insulation, air sealing (closing gaps around windows, doors, and other leaks), and equipment upgrades, which can cut bills by half or more. Duke has not asked state regulators to make the credit permanent, and a spokesperson said any decision rests with the North Carolina Utilities Commission. Separately, Duke shareholders have agreed to put $20 million toward bill help and home repairs like roofing, but that money is not tied to the expiring credit program. If you get help through LIEAP or the Crisis Intervention Program in North Carolina, this is worth watching, since your monthly credit could disappear right as rates go up. It may be worth checking with your state or local energy assistance office about what support will still be available after December.
US apartment buildings have tipped toward heat pumps
Heat pumps have become the standard choice in new U.S. housing. In 2025, 53% of newly built apartment buildings included heat pumps, up from 46% the year before. Heat pumps are electric units that both heat and cool a home, running on the same technology as an air conditioner but able to reverse and warm a space too. New houses are close behind, with 48% built with heat pumps last year. Overall, most new homes built in 2025 had some form of electric heating, either heat pumps or less-efficient electric-resistance systems: 78% of new apartment units and 56% of new houses. Builders point to a few reasons for the shift. Heat pump technology has improved, and demand for air conditioning has grown as heat waves become more common. Heat pumps cost more upfront than a gas furnace alone, but can compete on price with a furnace-plus-AC setup. Skipping gas hookups also saves builders money on infrastructure, since electric-only construction avoids the cost of running gas lines. A federal tax credit that gave developers up to $5,000 per efficient housing unit likely helped too, though it expired last month. Where you live still matters. States like California, Colorado, and Washington have building codes that push new construction toward all-electric heating, while other states have no such rules. Even without those mandates, though, builders in many regions are choosing heat pumps anyway, so the technology is spreading even in places without policies requiring it.
Translucent Solar Starts Producing Solar Panels in South Carolina
A new solar panel factory has started making panels in Summerville, South Carolina. The plant belongs to Translucent Solar and is part of a broader push, backed by federal incentives and tariffs on imported panels, to build more solar equipment inside the US. By the end of 2026, the factory is expected to reach its full production capacity of 1.2 gigawatts a year. The panels coming out of this plant are meant for a mix of uses: large utility-scale solar farms, commercial installations, and residential systems. So some of what rolls off this line could eventually end up on homes. The company describes this South Carolina plant as a $15.6 million first-phase investment, and its managing director says it plans to expand further into US manufacturing, including making the solar cells and wafers that go into panels, not just assembling them. For homeowners, this doesn't change anything immediately. No new rebate, price break, or program is tied to this factory opening. It does add to the supply of American-made solar panels, which matters if incentives or rules in your state give any preference to domestic manufacturing when you install rooftop solar. If you're weighing a home solar project, it's still worth checking what panel-sourcing rules, if any, apply to rebates or tax credits where you live, since those details vary by state and program.
Home interior air/vapor barrier selection
This is a homeowner's question, not news, so there's no policy or program update here. It's one person asking for advice on their own build, but the details are worth knowing if you're renovating or finishing a similar structure. The homeowner bought a post-frame (pole barn style) home in West Virginia that was already framed and enclosed but never finished inside. They're insulating the walls with rockwool (a mineral-wool insulation) to around R-29, and want to add a barrier on the inside face of the wall that stops air leaks but still lets some moisture dry toward the interior, since the metal siding outside blocks drying to the outdoors. They're weighing a few "smart" vapor barrier products, membranes that adjust how much moisture they let through depending on humidity, rather than a plain plastic sheet. They also have a vaulted, vented attic ceiling finished in tongue-and-groove pine, which is a wood plank ceiling with visible gaps that can leak air. They want to know if the same type of smart membrane can go behind that pine to block air movement without adding a layer of drywall or plywood first. For a homeowner, the takeaway is general: when metal siding or roofing blocks outward drying, the choice of interior air and vapor barrier matters more, and matching the material to your climate zone and wall assembly is worth getting right before drywall goes up.
How Can Condensation Occur at Higher Air Temperature?
Most people know condensation as something that happens when air cools down, like dew forming on grass overnight or moisture on a cold window. That's because water vapor turns to liquid at a certain temperature, called the dew point, and cooling air below that point causes condensation. But condensation can also happen when air gets warmer, and the explanation comes down to pressure. Just as water boils at a lower temperature at high elevation (where air pressure is lower) and cooks faster in a pressure cooker (where pressure is higher), the dew point temperature also shifts with pressure. Raise the pressure high enough, and water vapor will condense even at a higher temperature. This is why air compressors, which pack air to five or ten times normal atmospheric pressure, collect water in their tanks after use, even on a warm day. The moisture didn't come from a temperature drop, it came from the pressure increase. This is mostly a curiosity rather than something that affects your house directly, since the pressure swings from weather changes are far too small to trigger this effect. Normal home condensation problems, like moisture on windows, in attics, or inside walls, still follow the familiar rule: they happen when moist air meets a surface at or below its dew point, not because of pressure changes inside your home.
NLR & North American Electric Reliability Corporation Launch Partnership To Advance North American Grid Reliability
A federal research lab, the National Laboratory of the Rockies, and the North American Electric Reliability Corporation (NERC), the group that sets and enforces reliability standards for the power grid, have announced a new partnership. The goal is to study how the electric grid is changing and find ways to keep power reliable and affordable for the more than 400 million people who depend on it across North America. The first phase of the work will combine NERC's detailed data on grid equipment and locations with the lab's grid-modeling tools, letting researchers build a more precise picture of the power system and study future reliability risks in greater depth. The two organizations say this could shape how utilities and planners approach grid reliability going forward, including newer analysis methods that weigh probability and risk rather than simple worst-case planning. This is a research and planning partnership, not a new program, incentive, or rule. It does not create any rebate, deadline, or requirement that affects your home directly. The practical relevance for homeowners is longer-term: work like this feeds into how utilities plan for grid reliability as more homes add things like heat pumps, electric vehicle chargers, and rooftop solar, all of which change demand on the system. For now, there is nothing to act on. It is worth watching only if you follow how the broader grid is preparing for the shift toward more electrified homes.
How Florida quietly removed climate change content from textbooks
Florida education officials pushed publishers to soften or cut climate change content from high school science textbooks in summer 2024, according to records obtained through a public records request. In one biology textbook, a line stating climate change kills at least 150,000 people a year was changed to a vaguer statement about CO2 affecting human health. Other edits swapped "climate change" for "changes in the environment," dropped the word "polluting" from a reference to coal plants, and removed mentions of the fossil fuel industry's political and economic influence. Publishers including McGraw Hill, Cengage, and Savvas Learning Company confirmed making changes at the state's request. The edits came as Florida works to update its science standards for the first time since 2008 — standards that currently require climate change be taught in high school courses like earth science, marine science, and environmental science. It's unclear whether the new standards, submitted this summer and now under state review, will keep that requirement. Teachers interviewed described a "culture of caution" around discussing climate change, even though it isn't formally banned. This is a policy story, not one with a direct action for your household. But it points to something worth knowing: what your kids or grandkids learn about climate change, home weatherization, and energy use may depend heavily on which state they attend school in, since textbook content varies from state to state based on these kinds of pressures.
2 GW HVDC Is Becoming Standard. The Rest Of The Grid Isn’t.
This is a story about the big power grid, not something that changes what happens at your house, but it helps explain why some regional grid upgrades take longer than others. High-voltage direct current (HVDC) lines move large amounts of electricity over long distances, and the industry is now settling on a standard size for this equipment, around 2 gigawatts, in Europe, with similar patterns emerging in the U.S. and India. That standardization should make these big transmission projects faster and cheaper to build, since manufacturers can produce a repeatable design instead of engineering each one from scratch. The harder problem is what surrounds the equipment. As power plants that used to stabilize the grid retire and more electricity comes from wind, solar, and other sources connected through electronic converters, the grid needs new ways to stay stable. The rules for how these converters should behave are not yet standardized across regions, and getting equipment from different manufacturers to work together smoothly is still a work in progress. There is also a planning gap: big transmission lines often cross state or national borders, and North America in particular lacks strong institutions for coordinating those projects and deciding who pays for them. None of this changes anything about home energy upgrades or rebates right now. It is a reminder that the grid feeding your home is going through a slow, complicated modernization behind the scenes, one that affects how reliably renewable power reaches your area over the coming years.
SolarAnywhere® Supports Solar PV & Unmanned Flight!
This news is about a research use of solar data, not a home upgrade program, but it's worth knowing about since it involves the same technology behind rooftop solar forecasting. SolarAnywhere, a company that maps sunlight levels using satellite data, is best known for helping plan solar panel systems. A researcher at the Warsaw University of Technology used that same 25-plus years of sunlight data to figure out the best times to launch solar-powered drones, and how long those drones can stay airborne under real weather conditions rather than ideal sunny-day assumptions. The point of the study was to move past guesswork based on clear skies and instead calculate real odds of a drone completing its flight, given clouds, location, time of day, and details like battery size or wing design. The researcher found, for instance, that launching a drone at midday gives it much better odds of a longer flight than launching early in the morning, even on the same day. There's nothing here that changes what's available for home solar or rebates. It's simply a reminder that the same sunlight-tracking data used to plan household solar systems has other uses, in this case helping engineers design solar-powered drones for things like environmental monitoring or search-and-rescue work.
Cadillac CELESTIQ Night Test Is Inspired By The Quiet, After-hours World Where Real Performance Is Honed
Cadillac has unveiled a one-of-one custom version of its CELESTIQ electric sedan called the Night Test. It's a design showcase, not a new model or product you can buy off a lot. The car features a dark Caspia Tricoat Metallic paint finish, 23-inch wheels in a dark finish, and a stealth-style lighting bezel around the headlamps. Inside, it has black and gray leather, carbon fiber trim, and brushed metal accents. The CELESTIQ line is Cadillac's ultra-premium electric flagship, hand-built at the company's Artisan Center in Warren, Michigan, with each car customized to the buyer's own choice of colors, materials, and finishes. This Night Test example is meant to show off how far that customization can go, rather than to introduce any new technology or efficiency feature. It debuts at The Quail, a car show held during Monterey Car Week. For a homeowner thinking about energy upgrades, this news doesn't carry much direct relevance. It's a look at a luxury electric vehicle's styling and craftsmanship, not a report on EV chargers, home batteries, or any incentives tied to electric vehicles. If you're curious about how EVs fit into home energy plans, this particular story is about aesthetics and bespoke manufacturing, not about cost, charging equipment, or rebates.
The Genesis GV90 takes luxury up a notch with coach doors and all [Images]
This one's about a new luxury electric vehicle, not a home energy upgrade, so it doesn't affect any decisions about your house. Still, here's what happened: Genesis unveiled its new flagship electric SUV, the GV90, at an event in San Francisco. It's a large, high-end vehicle with a battery pack of 123.5 kWh, offering an estimated 310 miles of range in the seven-seat version. On a fast charger rated at 350 kW, it can go from 10% to 80% charge in about 22 minutes. The GV90 comes loaded with unusual features, including rear "coach doors" that open independently of the front doors on a special version called the Neolun Arch Gate, a roof airbag designed to protect passengers in a rollover, and a dual-motor all-wheel-drive system producing 657 horsepower. Inside, it has a pop-up display screen, a large head-up display, a 25-speaker sound system, and rear-wheel steering to help with tight turns. None of this connects to home energy programs, rebates, or efficiency upgrades. If you're weighing electric vehicle purchases against home electrification spending, the relevant takeaway is simply that automakers keep expanding the luxury EV market, but this particular model is a high-end SUV announcement, not something tied to any rebate program or federal incentive for homeowners.
Scoop: BlocPower is shutting down
BlocPower, a company that installed heat pumps and other energy upgrades in homes, apartment buildings, and houses of worship, is shutting down and liquidating its assets. The company had told investors last month it was trying to restructure, but has now decided to wind down instead. The shutdown matters most for people who signed long-term lease contracts with BlocPower for heat pumps or other electrification work. It's unclear what happens to those existing leases now. BlocPower said it had completed projects in more than 5,000 households, commercial buildings, and houses of worship, mostly in cities like New York, Oakland, Philadelphia, Milwaukee, and Washington, D.C. If you have a contract with BlocPower, its future is uncertain while the company sorts out its finances. The company also raised more than $3 million from everyday investors through crowdfunding campaigns, promising annual interest payments over a decade or more. Those investors likely won't get their money back, since larger creditors like Goldman Sachs and VoLo Earth Ventures get paid first and may not be fully repaid either. BlocPower's own filings show it had a net loss of nearly $737,000 last year, just $80,000 in cash, and more than $4.5 million in debt against $3.5 million in assets. The company's troubles built up over time: some project contracts fell apart or never started, rising interest rates and electricity prices squeezed profits, and the Trump administration froze or cancelled federal funding for home electrification programs that BlocPower relied on.
A2Ls or R-290? Understanding the Tradeoffs
This is mostly commercial refrigeration news, about the coolers and freezers used in grocery stores and food retailers, not home HVAC equipment. But it's worth knowing for anyone tracking the industry's move away from older refrigerants with high global warming potential (GWP). Two families of flammable refrigerants are becoming common in store equipment: A2Ls, a group of newer refrigerant blends, and R-290, which is propane. The two work differently. R-290 has a GWP of just 3, making it about as climate-friendly as refrigerants get, and it's used mainly in small, factory-sealed units like reach-in coolers, ice machines, and ice cream freezers, more than 5 million of which are already installed in North America. Because these units are sealed at the factory with a small refrigerant charge, they need little special safety equipment and are largely plug-and-play. A2L refrigerants have higher GWP than propane but still much lower than older refrigerants, and they can be used at higher charge amounts, so they show up in a wider range of equipment, from display cases up to large centralized systems in bigger stores. A2L systems need extra safety features like leak detectors and shut-off valves, and technicians who service them need specific training and tools. For a homeowner, none of this changes your furnace, air conditioner, or heat pump. It reflects how the same shift toward lower-GWP refrigerants playing out in home HVAC is also reshaping the equipment behind the glass doors at your grocery store.
Ensuring safety of plug-in solar
Plug-in solar, sometimes called balcony solar, is a small portable solar setup that plugs straight into a wall outlet, no electrician or permit process required in most cases. The idea is well established in Germany, with over a million units in use, and it's now catching on in the U.S. Ten states have passed laws covering it, with more considering legislation, including New Jersey and New York, where bills await the governor's signature. Where states have passed rules, they typically skip the usual utility interconnection approval, cap systems around 1,200 watts (Colorado allows up to 1,920), and require safety certification under a standard called UL 3700, finalized in late 2025. A few states, including Maine, New York, and Vermont, want every component, panels, cables, mounting hardware, and inverter, certified, a bar no manufacturer has yet cleared. The certification matters because these systems carry real risks: they can overload household circuits without tripping a breaker, expose users to shock through energized plug parts, and interfere with ground-fault protection outlets meant to prevent shock in wet areas. On the upside, plug-in solar is cheap and simple. Basic systems sell for under $500, roughly a third to half the cost of a traditional rooftop system, and industry sources expect prices to keep falling. Payback time in the U.S. typically runs two to six years, depending on your electricity rate and how much sun the panels get. If you're curious whether this applies to your home, check whether your state has passed plug-in solar rules, since that determines whether you'd need utility approval before plugging one in.
Home buyers want more information on energy usage. Utilities can help.
New research from the Smart Energy Consumer Collaborative, done with the National Association of Realtors and the data firm 257, finds that home buyers care a lot about energy efficiency, but rarely get useful information about it when shopping for a house. More than 80% of recent buyers said efficiency mattered to their decision, but only 34% of real estate agents thought it mattered to buyers that much. As a result, agents often don't mention efficiency features in listings. That gap shows up in the data. Even though roughly one in four U.S. homes has a solar system, heat pump (a heating and cooling system that uses electricity more efficiently than a furnace or standard AC), or other clean-energy feature, only 8.3% of listings last year mentioned energy efficiency at all. Heat pumps went unmentioned in the vast majority of listings that had one, and rooftop solar was left out of listings a third of the time. That silence has a price: listings that do mention solar sold for about 2% more (roughly $10,000 on a median-priced home), and those mentioning heat pumps sold for 0.6-1% more (about $2,300 to $3,900). The researchers argue utilities should step in with training, fact sheets and bill-estimate tools for agents and buyers, since agents often lack the technical know-how. If that happens, homeowners buying or selling could eventually see more of these features clearly listed and valued, and get better guidance on rebates and equipment choices right when they move in.
Public utilities board proposes expanding New Jersey’s energy storage program
New Jersey's Board of Public Utilities has proposed expanding its Garden State Energy Storage Program to open up 150 megawatts of energy storage across the state, including home battery systems. The plan is part of the state's push to reach 2 gigawatts of energy storage by 2030, and it's meant to lower energy costs, add clean power to the grid, and make the electric system more reliable during heat waves or cold snaps. For homeowners with a battery system, or thinking about installing one, the proposal would let you enroll your battery and get paid for sending stored power back to the grid during times of high demand. Under the plan, you could receive annual incentive payments over a 10-year term. The state's four electric utilities — Atlantic City Electric, Jersey Central Power & Light, PSE&G, and Rockland Electric — would handle enrollment, coordinate when batteries get called on, track how they perform, and issue the payments, all under state oversight. This is currently a "straw proposal," meaning it's an early draft open for public comment before anything is finalized. No enrollment details, payment amounts, or start dates have been set yet. If you own a home in New Jersey and have battery storage, or are considering it, this is worth watching, since it could turn your battery into a source of ongoing income rather than just backup power for outages.
Thermodynamic Leverage: Heat Pumps, Exergy Matching & Anergy Harvesting Exergy
This piece makes a case for why heat pumps are a better match for home heating and cooling than furnaces or boilers that burn fuel. The idea rests on a distinction between two parts of energy: the useful, high-quality part (called exergy) and the low-quality leftover part (called anergy). The author argues that warming a house is a low-grade job that doesn't need the intense heat produced by burning fossil fuel. Using a fuel flame to warm a room is compared to using a sledgehammer to tap in a thumbtack — far more force than the task requires. Heat pumps, by contrast, work by moving existing heat rather than generating it through combustion. That makes them a closer match to the modest amount of heating or cooling a house actually needs. The article frames this as part of a broader shift away from burning fuel for home comfort, echoing the idea that it's time to rethink how homes get their heat now that better tools exist. There's no new program, rebate, or deadline here — this is a conceptual explanation of why heat pumps make thermodynamic sense, aimed at building a case for choosing one over a combustion furnace or boiler. If you're weighing a heat pump against a gas or oil system for your own home, this is background on the reasoning behind that choice, not a specific incentive or requirement to act on.
Reclaimed Refrigerant and System Integrity: Understanding a Changing Supply Landscape
The refrigerant used in air conditioners and heat pumps is getting harder to come by, as international and Canadian rules phase down the chemicals (HFCs) that most cooling systems rely on. In Canada, this squeeze will tighten further in 2029, 2034, and 2036 under regulations called ODSHAR. As new refrigerant supply shrinks, more of what's available will come from "reclaimed" refrigerant — gas recovered from old systems, cleaned up, and reused. The key point for homeowners: reclaimed refrigerant isn't automatically as good as new. Industry standards (AHRI 700) set specific purity requirements it has to meet — removing moisture, acids, and other contaminants that can corrode parts, damage compressors, and make a system run less efficiently. When reclamation is done properly, with real testing, the recycled refrigerant performs the same as new refrigerant. When it isn't tested and verified, it can cause the same problems as low-quality refrigerant: higher energy bills, more wear, and a shorter system lifespan. For most homeowners, this is background news rather than something requiring immediate action. It doesn't change how your current air conditioner or heat pump works today. But as refrigerant supplies tighten over the next decade, it may become more relevant when you eventually need a system serviced, recharged, or replaced — since the refrigerant used could increasingly be reclaimed rather than newly manufactured.
VPP value proposition expands to affordability, reliability and resilience
Utilities are leaning more on "virtual power plants," or VPPs, which link up home batteries, EV chargers, smart thermostats and other devices so a utility can dial demand up or down when needed. Experts speaking at an industry webinar said these programs are being pitched not just as grid reliability tools but as ways to hold down electricity costs for everyone, since shifting demand away from expensive peak periods can reduce costs that get passed on to ratepayers. If you have a home battery, an electric vehicle, or a smart thermostat, this is the kind of program you might be offered enrollment in. Experts said the programs that attract the most participants tend to offer steady, predictable payments, use accurate metering to track what your device actually contributed, and let people opt out without a penalty. Some utilities pay more if you agree to let them dispatch your battery or EV charging more often, including at different times of day, such as weekend evenings. Examples cited include National Grid's ConnectedSolutions+ program in Massachusetts, which pays participants extra for more flexible dispatch, and Xcel Energy's Active VPP program in Colorado, which is trying to sign up a set amount of battery capacity each year. Vehicle-to-grid technology, which lets an EV send power back to the grid rather than just draw it, was mentioned as a growing area utilities want to expand. Program details and payments vary by utility and state, so it's worth checking what your own utility currently offers.
How Qcells’ Georgia factory is surviving US solar policy whiplash
A Qcells solar panel factory in Cartersville, Georgia, has expanded so it can now handle the whole manufacturing process, from raw material to finished panel, instead of just assembling parts. It's part of a broader push to build more solar panels in the U.S. rather than relying on China, which has long dominated the market with cheaper panels. Federal policy on this has swung back and forth. The Biden administration offered tax credit bonuses for solar projects using U.S.-made panels, which Qcells says helped convince it to build the Georgia plant. The Trump administration has taken a different approach: last year's tax and spending law eliminated most solar tax credits but kept a few, and made panels from certain countries, including China, ineligible for them. Starting in December, new tariffs and minimum prices on imported polysilicon (the raw material used to make solar cells) will also apply, which could make Chinese imports pricier and easier for U.S. manufacturers to compete against. For homeowners considering solar, the near-term picture is mixed. The rollback of federal clean energy tax credits removed a major incentive for new solar projects generally, and some planned projects have already been dropped. At the same time, solar remains one of the cheapest ways to add electricity to the grid, and panels are widely available while other equipment, like gas turbines, faces long delays. Experts say solar development will keep growing, but costs, availability, and where panels are made are still being sorted out.
Dave Sillman: Clean Energy Generation Goes Geothermal in Georgia
A homeowner near Atlanta bought a house that came with rooftop solar, three Tesla Powerwall batteries, and a geothermal heating and cooling system already installed. Geothermal is a type of heat pump: instead of moving heat between your house and outside air like a standard heat pump, it moves heat between your house and the ground, using buried pipes to tap into steady underground temperatures. Because it moves heat rather than burning fuel to create it, it uses much less electricity than a gas furnace and air conditioner. The owner reports his power bill dropped from around $600 a month at his old house to an average of $60 to $70 now, with a high of $150 in winter. He credits the geothermal system with cutting heating and cooling costs by about 70 percent compared to a traditional furnace and AC, plus solar power covering daytime use and batteries covering nights. The system's waste heat also warms his water heater, trimming that cost too. He charges two electric vehicles using excess solar power, which matters in Georgia since the state does not have net metering, so selling surplus power back to the grid isn't much of an option. He notes two downsides to geothermal: fewer contractors service it, so finding someone to inspect or maintain the system can take extra searching, and the upfront cost is higher, though he says the long-term savings can outweigh that, especially if the installation is financed. For homeowners not ready for a full system, he points to smaller first steps like air sealing and insulation, along with Georgia programs that offer subsidies for efficiency upgrades and heat pump conversions.
Duke’s New Energy Plan for Data Centers Requires Consumer Protections Now
Duke Energy has released a new long-range power plan for South Carolina that calls for two new gas plants and longer life for coal plants the utility already runs. Duke says the buildout is needed to serve data centers, pointing to 8,000 megawatts of demand from 43 large customers already in "advanced development" and another 6,000 megawatts of possible future demand, though none of those additional customers have signed contracts yet. Critics, including the Sierra Club, argue Duke is planning expensive, pollution-heavy infrastructure for speculative data center growth while everyday demand from homes and small businesses is actually slowing. Duke's own numbers show residential energy demand growth has dropped from 1.9 percent to 1.3 percent, and retail demand growth has fallen from 1.8 percent to 1.2 percent. The concern is that if these new gas and coal costs get built into Duke's rates, regular customers could end up helping pay for power plants built mainly to serve large tech companies. The South Carolina Public Service Commission, which regulates Duke, has an open docket specifically on rules for these "large load" customers like data centers. Advocacy groups are pushing the commission to require data center operators to pay their own fair share of costs, rather than spreading them across residential and small business bills. There's no rate change or bill impact yet — this is a proposed plan awaiting regulatory review — but it's worth watching if you're a Duke Energy customer in South Carolina, since the outcome could affect future electricity rates.
Ferguson HVAC Sales Rise 11% Amid Mixed Markets
Ferguson Enterprises, one of the biggest distributors of HVAC equipment and parts, reported strong sales for the second quarter of 2026, even though officials described the housing market as sluggish and the economy as uncertain. The company's HVAC division saw sales rise 11%, helped both by regular business growth and by Ferguson buying up other HVAC companies. Overall company sales hit $8.8 billion for the quarter, up 4.6% from a year earlier. For homeowners, the relevant piece is what's happening in the residential market. Ferguson said U.S. home sales were "subdued," with weak new construction and soft demand for home repairs and improvements, though residential revenue still grew 2% for the quarter. Business from non-residential customers, like commercial and industrial buildings, was much stronger, up 8% overall, with particular growth in data centers and manufacturing facilities. In Canada, sales actually declined, with the residential market there described as especially weak. None of this changes any rebate programs or incentives directly, but it offers a snapshot of the broader HVAC market: demand for home heating and cooling upgrades has been soft compared to commercial demand, even as the equipment supply chain itself keeps growing through acquisitions. Ferguson picked up several HVAC distributors during the quarter, including companies operating in Michigan, Ohio, and the Southeast, which could affect which brands and suppliers are available in those regions.
Panasonic Adds 2 Models to WhisperFresh IAQ Lineup
Panasonic has expanded its WhisperFresh line of fresh-air ventilation systems, adding two new models, WhisperFresh and WhisperFresh Plus, alongside the existing WhisperFresh Select. These units bring outside air into a home mechanically, which is increasingly required as houses are built or sealed tighter for energy efficiency. Tighter homes hold in heat and cooling better, but they also need a controlled way to bring in fresh air, since air sealing reduces the natural leaks that used to do that job. The new models are aimed at giving builders options at different price points. Both run on DC motors that meet Energy Star and Home Ventilation Institute certification standards, and both can mount horizontally or vertically in an attic, crawlspace, ceiling, or closet. They use standard 8-by-8-by-1-inch filters, sold at typical HVAC supply stores, so filter replacement should be simple. A paintable access door lets homeowners get to the filter easily when the unit is mounted flush with the ceiling. The WhisperFresh Plus adds humidity and temperature sensors, intended to help in hot, humid climates where indoor air quality problems are more common. The top-tier Select model keeps its smart-home features, including optional Wi-Fi for app-based monitoring and control. All three models can connect with other Panasonic indoor air quality products, including its WhisperGreen Select fan and BalancedHome energy recovery ventilator, for homeowners who want one connected system rather than separate devices. If you're planning new construction, a major renovation, or an upgrade to meet current ventilation requirements, this expanded lineup gives more choices depending on budget and climate.
The "Future Is Green": Bringing career readiness to Greenbuild
This news is about a workforce and career program, not a rebate or upgrade you'd apply for your own house. The U.S. Green Building Council is launching "Future Is Green," a new student-focused track at its Greenbuild conference, a large annual gathering for people in the green building and sustainability industries. The program is aimed at students and recent graduates, not homeowners. It includes preconference webinars, access to Greenbuild keynotes and the expo hall, curated education sessions, mentoring with industry professionals, and follow-up training after the event. Registration costs $65, with an early-bird discount through Friday, Sept. 11, and students can sign up directly or through their schools. For a homeowner thinking about energy upgrades, this doesn't change any rebate, program deadline, or technology available to you. It's mainly relevant if you know a student or recent graduate interested in a career in green building, energy efficiency, or sustainability, since it offers them a low-cost way to meet people in the field and learn about job paths. There's no consumer action tied to this story, and no impact on programs like weatherization assistance or home energy rebates that homeowners typically follow.
climate zone 6 roof retrofit
This is a homeowner forum post, not a news story, so there's no program or policy update here — just one person thinking through a renovation and asking for advice from other builders and homeowners. The homeowner is remodeling a 1986 house in a cold northern climate (climate zone 6). The house has a large central chimney with a single flue that currently helps support parts of the roof and floor, and it's being removed. Part of the roof over the kitchen and living room will become a clerestory — a raised section with its own row of windows near the roofline. The plan is to build a new, non-load-bearing roof over the existing one, adding two layers of fluffy insulation (rated R30 each) with a vented gap between them, sandwiching the original roof deck (the boards or panels under the shingles) in the middle. The question raised is whether that buried roof deck could become a spot where moisture condenses, since it sits between two permeable insulation layers. The homeowner also hasn't decided yet how to insulate the exterior walls, weighing a double-stud wall or a similar deep-cavity approach against the existing 2x6 framing. For a homeowner reading this: it's a useful reminder that stacking insulation in unusual ways during a roof or wall upgrade can create hidden moisture risks, which is why these details usually get reviewed by someone familiar with building science before construction.
LG Energy Solution starts battery production at new Lansing facility
LG Energy Solution has started making batteries at a new plant in Lansing, Michigan, built with more than $2 billion in investment since 2022. The 226-acre facility will eventually produce over 35 GWh of batteries a year and employ about 1,700 workers, up from 900 today. The plant makes two kinds of batteries. One type, called LFP (lithium iron phosphate), is meant for large-scale energy storage systems — the big batteries utilities and businesses use to store power, sometimes paired with solar or wind. DTE Energy, a Detroit-based utility, plans to use Lansing-made LFP batteries in upcoming storage projects. The other type, called NMC (nickel-manganese-cobalt), is for electric vehicles and will power Toyota's 2027 Highlander EV. This adds to LG's existing battery plant in Holland, Michigan, which has run for more than 20 years. Combined with research facilities in Troy, the company expects its Michigan workforce to top 3,300 by the end of 2026, representing over $5 billion invested in the state since 2010. For homeowners, the news matters mainly because of where the batteries are made. Building battery cells domestically helps energy storage projects and utilities qualify for U.S. content rules tied to federal clean energy tax credits. LG says it's aiming for 80% of its global energy-storage battery production to be based in North America by the end of 2026, which could support more U.S.-made storage systems — the kind sometimes paired with home solar or backup power setups — as this manufacturing capacity comes online.
Monopoly framing + exterior insulation + overhangs. How best to wildfire proof?
A homeowner planning a new house in a moderate wildfire risk area raised a question worth passing along to anyone building or remodeling in fire-prone country: how do you protect against wind-driven embers, which are one of the main ways homes catch fire during wildfires? The house in question uses a wall and roof design built almost entirely from non-combustible materials: fiber cement or metal siding, mineral wool (rockwool) insulation on the outside of the wall, and a water-resistant barrier under that, all over standard wood framing. Everything outside that barrier is fire-resistant, with one exception: roof overhangs, which normally need wood framing to stick out from the wall. The question is whether there's a way to build overhangs without introducing combustible wood, or whether the safer path is to just use a fire-resistant wood species instead, alongside ember-blocking screens and vents at the soffit (the underside of the overhang) and roof ridge. For homeowners in wildfire zones, the takeaway is that overhangs and eaves are a known weak point in an otherwise fire-hardened design, since embers can collect and ignite materials tucked under a roof edge. If you're building or renovating in a fire-prone area, it's worth asking your designer or builder how the eaves, soffits, and vents on your own house are detailed, since these details matter as much as the wall assembly itself when it comes to ember resistance.
Very small amounts of insulation in cathedral ceiling, risk of condensation?
A homeowner with an unheated summer cabin asked a building-advice forum about a cathedral ceiling (a sloped ceiling that follows the roofline, with no attic space above it). The cabin sits in a moderate-to-cold climate zone, has a roof that isn't vented, and includes dormers. Right now the ceiling has no insulation at all. The owner wants to add air conditioning for summer use and is weighing whether to add just a little insulation to soften the worst of the summer heat and winter cold. The usual guidance for this kind of unvented cathedral ceiling is that only closed-cell spray foam is safe, because it blocks moisture from reaching the cold roof deck, where it could condense and cause rot. The homeowner's question was whether a thin layer of a breathable insulation, such as 2 inches of rockwool (a mineral-fiber batt, here rated around R-8, a modest insulation value), would still create a real risk of condensation inside the ceiling. If the risk turns out to be significant, the plan is to skip insulating the ceiling entirely, since this is a rustic cabin the owner doesn't want to remodel heavily. As of this posting, the question had not yet received any answers. Anyone with a similar unvented cathedral ceiling and cabin-style, part-time use should know that partial, permeable insulation in this kind of assembly is exactly the situation where condensation risk needs careful evaluation before work begins, since the wrong approach can trap moisture in the roof structure.
TOYO revenue surges 88% in H1 2026 as U.S. solar market drives growth
Solar panel maker TOYO reported strong growth for the first half of 2026, with revenue up 88% to $261 million, driven largely by U.S. demand. Sales to U.S. customers rose 154% to $210.5 million, making up about 81% of the company's total revenue. The company shipped 2.6 gigawatts of solar cells, up 62.5% from a year earlier, plus its first solar modules from newly built U.S. manufacturing lines. TOYO is expanding its manufacturing site in Humble, Texas, near Houston. A second module production line there is nearly finished and expected to start commercial production in September 2026, bringing the site's total module capacity to about 2 gigawatts. The company is also building a $357 million facility to make heterojunction (HJT) solar cells, a more efficient cell technology, with pilot production still on track for no later than early 2028. For homeowners, this points to a growing supply of solar panels made or assembled in the U.S., which matters because of ongoing trade and tax rules tied to where equipment and materials come from. TOYO said it is working with the Department of Commerce on tariff and domestic-content policies that affect solar manufacturers, and that it is positioning its supply chain to avoid materials from countries flagged as a national security concern. None of this changes rebate or tax credit eligibility on its own, but as more panels get made domestically, it could affect which products qualify for incentives tied to U.S. manufacturing content down the road.
EVO Power and Ranial start nationwide battery and energy management service
Two energy companies, EVO Power USA and Ranial Systems, are teaming up to offer battery storage paired with smart energy management software to businesses nationwide. EVO makes battery energy storage systems, and Ranial provides software that uses artificial intelligence to decide when to store power and when to release it, aiming to cut energy costs and ease strain on the electric grid. The partnership isn't aimed at homeowners directly. It's built for commercial and industrial customers. One example: a Toyota dealership with two locations in New York State added solar panels, EV chargers, and EVO battery systems managed by Ranial's software. The result, according to EVO, was an average 55% cut in the dealership's energy costs by storing solar power and using it strategically instead of pulling more expensive power from the grid at peak times. For homeowners, this news mostly signals a broader trend: pairing solar and battery storage with smart software that automatically manages when energy is stored or used is becoming more common and more effective, at least at commercial scale. EVO says it has completed more than 125 storage deployments globally, some running over five years. While this particular deal doesn't offer a home product or rebate, it points to the kind of "smart" battery management technology that may eventually filter down to residential systems, helping households with solar and batteries get more savings from equipment they already have.
This new framework measures corporate chemical footprints
A group backed by Google and Apple, called the Safer Chemistry Impact Fund, has released a new tool for companies to track the chemicals used in their products and supply chains. The tool, known as the Safer Chemistry Impact Metrics Framework, lets companies catalog chemical hazards, spot gaps in their knowledge, and measure what share of the chemicals they use are flagged as "chemicals of concern" — substances with known, lasting risks to people or the environment — versus safer alternatives. It was built with input from companies, nonprofits, investors, and government agencies, and tested in the beauty, apparel, and consumer electronics industries, though it's meant to apply broadly. The effort responds to the Global Framework on Chemicals, a set of nonbinding international guidelines adopted in 2023 for managing chemical risks throughout their life cycle. The goal is to eventually turn this new framework into a widely recognized standard, similar to how companies now measure and report greenhouse gas emissions. That standard-setting process is expected to begin in early 2027. This isn't a rule homeowners need to act on, but it's worth knowing about if you pay attention to how the products and materials in your home are made. Companies like Google, H&M, HP, Levi Strauss, and Sephora already fund related work through a database called the Chemical Hazard Data Trust, which rates common chemicals on dozens of health and environmental measures. As more companies adopt frameworks like this, it could eventually mean clearer information about the chemicals used in everyday household products, from electronics to building materials.
House with a Village Soul
This is a story about one couple's restoration of an 1818 Federal-style house in Jaffrey Center, New Hampshire, bought in 2021 after sitting neglected for years. An inspection found failing floor joists, charred rafters, deteriorating chimneys, mechanicals that no longer met code, a disconnected gas range, and broken toilets. The house was uninhabitable at purchase. The couple, one of whom is an architect specializing in historic preservation, spent about a year on repairs, longer than the planned six months because of pandemic-related supply shortages and labor delays. Work included reinforcing old joists with a new engineered beam, repairing barn and dining-room floors, adding three gas fireplaces with antique mantels, updating the electrical and heating and cooling systems, reusing old attic floorboards in a redone kitchen, installing new bathroom fixtures, and rebuilding a barn-to-house connector into livable space with a guest room and sleeping loft. Outside, they removed overgrown trees, repainted the exterior, rebuilt a stone garden wall, and enlarged the deck for a small pool. For homeowners with an old house, the takeaways are less about specific products than about scope: a neglected historic home can hide serious structural and mechanical problems behind cosmetic issues like mismatched paint or broken window panes, and a full restoration of this kind can easily run longer than planned. The piece is really a personal account of preservation and decorating choices rather than a guide with costs or rebate information.
If Toyota Sells EVs, People Will Buy Them
Toyota's plug-in hybrid sales jumped nearly 190 percent in July after the automaker rolled the models out nationwide, up from just 12 states before. A plug-in hybrid runs on electricity for shorter trips but has a gas engine for longer ones, so it offers some of the fuel savings of an electric car without range limits. The jump matters because Toyota has been slower than other automakers to build out fully electric models, even though it has a strong track record with hybrids. Advocates point to this sales surge as proof that buyers want more efficient vehicles when they're actually available on dealer lots. The Sierra Club's clean transportation director argued that Toyota has the size and manufacturing know-how to lead on electric vehicles if it decides to compete seriously, and that rising gas prices are pushing more drivers to look for ways to cut fuel costs. Toyota's own timeline for going electric has slipped, though: production of its 2027 Highlander EV has been pushed back. For homeowners weighing an electric vehicle alongside home upgrades like a heat pump or solar panels, this is a reminder that vehicle choices, especially from major brands like Toyota, are still catching up to demand. If you're planning to pair a home charger with your next car purchase, it's worth watching which models actually reach dealers and when, rather than assuming an automaker's announced plans will arrive on schedule.
In Michigan, LG opens one of America’s biggest battery cell factories
LG Energy Solution has opened a new battery factory in Lansing, Michigan, one of the largest of its kind in the country. The $2 billion plant, first planned as an EV battery site with General Motors, now splits its output between EV batteries and batteries for grid energy storage systems — the large battery setups utilities and power companies use to store electricity, often paired with solar farms. The factory currently employs 900 people, with plans to add about 800 more, and is expected to reach full production next year. For homeowners, this news is less about anything you can do at home and more a sign of where the electricity grid is headed. Grid-scale battery storage has grown nearly tenfold nationally since 2021, helping utilities manage demand spikes, including those driven by data centers. Michigan's own clean energy law requires 2.5 gigawatts of battery storage by 2030, often built alongside solar projects. More domestic battery manufacturing, including from LG's Lansing plant, could support that kind of buildout in your state or region over time. This shift also reflects broader changes in federal policy. The Trump administration has ended the $7,500 federal tax credit for buying an EV and cut over $700 million in battery and EV manufacturing funding nationwide, even as it continues to support tax credits for building clean energy manufacturing plants and installing stationary storage systems. Homeowners weighing an EV purchase or a home battery system may want to check what incentives are still available in their state, since federal support has narrowed.
Retreat to the Country
This is a home tour piece, not an energy-upgrade story, but it does touch on a few things homeowners with older houses sometimes wonder about. The house is a 1729 farmhouse in Litchfield, Connecticut, bought four years ago by two owners who split time between the city and the country. They kept the historic character intact — original chestnut floors, exposed beams, a center chimney with three fireplaces — while quietly adding modern systems. The comfort upgrades were done to stay out of sight. Central air conditioning was added, with the condenser tucked in the attic and the coolant lines run inside closets so nothing shows in the historic rooms. New electrical service was also installed. The owners describe the result as "a smart house," letting them check temperature and systems remotely from their phones when they're away, which is useful for a part-time residence that sits empty much of the week. Beyond mechanicals, the work included two renovated bathrooms, a new kitchen, and a period-appropriate cedar roof with new copper flashing, gutters, and downspouts. Outdoor living got attention too, with electricity and a water line run to an existing wisteria-covered pergola and a new bluestone terrace off the kitchen. There's no rebate news or efficiency program mentioned here — it's simply an example of how one old house balanced historic preservation with modern conveniences like central air and smart-home monitoring, done in a way that left the original fabric of the building largely untouched.
OCTA Is Spending Again On Hydrogen Because The Fuel Chain Failed
The Orange County Transportation Authority is putting another $27.6 million into hydrogen fueling infrastructure as it grows its fuel-cell bus fleet from 10 to 50. This isn't a story about home energy upgrades directly, but it's a useful case study in how hydrogen infrastructure can be far shakier than it looks. OCTA already had a hydrogen fueling station built in 2020, sized for up to 50 buses a day. But that system stopped working after the agency's supplier removed its leased tank and equipment in January 2026 following a contract dispute. The result: buses that were still in good working order sat with nowhere to fuel. Mileage on the fleet dropped from about 270,000 miles in 2024 to just over 14,000 in 2025, a nearly 95 percent decline, while OCTA scrambled with temporary and off-site fueling. Meanwhile, the agency's battery-electric buses, charged through the regular electric grid, kept running with no lost service. Total hydrogen refueling costs at OCTA have now topped $100 million. The broader point is that hydrogen vehicles depend on an entire separate supply chain — production, transport, storage, specialized contracts — that has to hold up for the 12 to 15 years a bus stays in service. Batteries plug into the same grid that already powers homes and businesses, which makes charging infrastructure simpler to maintain. For homeowners, the takeaway is less about buses and more about the pattern: technologies that rely on a single-purpose fuel-delivery system carry risks that battery-based systems tied to the existing electric grid generally don't.
Pennsylvania dangles permitting carrot for data centers that bring their own power
Pennsylvania Gov. Josh Shapiro signed an executive order that changes how the state permits large data centers, and the details matter for anyone worried about their own electric bill. Under the order, data center projects with peak demand over 25 megawatts get faster state permitting review if they agree to bring their own new power supply rather than drawing on the existing grid, and to source a growing share of that power from firm clean sources like solar, advanced nuclear, and battery storage. That requirement starts at 10% on Jan. 1 and climbs to 32% by Jan. 1, 2035. Projects that sign on also have to cover the full costs their electricity use causes, including grid upgrades, rather than spreading those costs to other customers. This connects to a broader concern: data centers use enormous amounts of electricity, and utilities have been passing some of those infrastructure costs on to residential customers along with everyone else. By requiring data centers to pay their own way and bring their own power, the order aims to keep those costs off homeowners' bills. Two Pennsylvania utilities, PPL Electric and FirstEnergy, already have gigawatts of data center demand in the pipeline, so how this plays out could affect electricity supply and pricing across the state in the coming years. There is nothing here that requires homeowners to do anything. It is a state policy shift affecting large commercial power users, not a program or rebate tied to home energy upgrades.
The Western energy market must shift as power flows evolve, say experts
Grid operators in the western United States are grappling with a shift in how electricity moves across the region. Historically, power flowed mostly north to south, but that pattern is reversing as more solar and wind generation comes online. Experts at a recent industry workshop said the system's safeguards were not built with this reversal in mind. One specific concern: the West has an automated safety measure that can split the regional grid along a north-south line to prevent widespread outages during emergencies. Officials said this system does not account for the growing south-to-north power flows, and a large disruption to a major transmission line connecting California and Oregon could leave both regions unprepared to handle the loss of power. Grid operators say they need to study the issue and update their models, but that work is only beginning. For a homeowner, this is not something requiring any action on your part. It is a behind-the-scenes look at how the electric grid is adapting to more renewable energy and changing power patterns. It does not point to an immediate risk to your electricity service, but it is a reminder that the grid infrastructure delivering power to your home is being reworked as the mix of energy sources changes. Any effects on reliability or rates from this kind of planning would likely show up gradually, if at all, rather than as a sudden change you'd notice.
Portland airport can charge 20 rental EVs at once – from overhead
Portland International Airport in Oregon has installed a new overhead charging system that lets rental car companies fast-charge up to 20 electric vehicles at once. ChargePoint mounted 10 dual-port fast chargers, each rated at 200 kW, above the cars at the airport's rental car service area, with retractable cables that come down when needed. Putting the equipment overhead keeps cords and chargers out of the way in a busy space where cars are cleaned and serviced between rentals. The setup solves a problem specific to airport rental fleets: they need to charge a lot of cars quickly, but floor-mounted chargers eat up space and can get damaged by vehicles moving through. By hanging the chargers from the ceiling, the airport saved on installation costs (less conduit and wiring) and freed up room for staff to work. Rental companies with a presence at the airport include Alamo, Avis, Budget, Dollar, Enterprise, Hertz, National, Payless, Sixt, Thrifty, and Zipcar, though it's not clear yet which ones will use the new chargers. This isn't something that affects home charging equipment or rebates directly, but it points to how fast-charging technology is evolving for places with tight space and heavy vehicle traffic. If the system works well, it could become a model other airports copy for their own rental fleets.
Wawa-branded EV chargers are expanding beyond Tesla
Wawa is putting its own brand on a new set of EV fast chargers, expanding beyond the Tesla Superchargers it began branding earlier this year. This time the convenience store chain is working with Electrify America, which will supply the charging equipment and network support while Wawa runs the stations under its own name. Eight Pennsylvania locations are getting the new chargers this year. Three stores — in Bristol, Allentown, and Quakertown — will have CCS-only chargers (a plug type used by most non-Tesla EVs) capable of up to 350 kW. Five others, in Upper Darby, Phoenixville, Media, Williamsport, and Reading, will offer both CCS and NACS connectors (NACS is the plug type Tesla uses, now being adopted more broadly) at up to 400 kW. Keep in mind a car only charges as fast as its battery allows, so few vehicles today will actually pull the full 400 kW, but that puts these among the fastest public chargers being installed in the US right now. Wawa says this Pennsylvania rollout is a test of owning its charging stations directly, giving it more control over reliability and the customer experience, rather than just hosting equipment run by others. The company still hosts Tesla and IONNA chargers too, so this doesn't replace those options. No opening dates or pricing have been announced yet. For homeowners with an EV, this mainly means another fast-charging option showing up at familiar Wawa stops in Pennsylvania, with more states possibly following depending on how the test goes.
16 Agrivoltaic Projects on Local Farms Move Forward in New Jersey
New Jersey has given the green light to 16 "agrivoltaic" projects, which pair solar panels with active farming on the same land. Approved by the state's Board of Public Utilities, the projects will add 52.06 megawatts of solar power while farmers keep growing soybeans, hay, grains, vegetables, and fruit, or raising livestock, on the same acreage. The projects are spread across Atlantic, Cumberland, Gloucester, Hunterdon, Mercer, Monmouth, Salem, and Warren counties. This is the first round of awards under the state's Dual-Use Solar Energy Pilot Program. Each project must sit on farmland already in active use, and the team behind it has to include the landowner, the farmer, and a solar company, with the farmer actually involved in planning and running the project. New Jersey expects the pilot to grow to around 200 megawatts over the next three years, with no single project larger than 10 megawatts. State officials say the goal is to let farms earn extra income from solar while staying in production, rather than forcing a choice between farming and clean energy. For most homeowners this program does not offer a direct rebate or upgrade to your own house. But if you own farmland, or are curious about how solar and agriculture can share the same acre, it is worth knowing this kind of arrangement exists and is expanding in New Jersey. Lessons from these projects will shape whether the state makes a permanent version of the program available in the future.
Essential system testing every solar project needs for long-term performance
Solar panel systems are designed to last for decades, but hidden problems can quietly cut into how much power they produce, sometimes for years before anyone notices. A recent industry piece lays out the range of tests used to catch these issues early, from large solar farms down to the kind of inspection work that applies to home systems too. These include thermal imaging (cameras that spot hot spots from failing parts or shaded panels), electrical checks like insulation resistance and grounding tests (which catch wiring problems before they become safety hazards), and IV curve tracing, which measures how well panels are actually performing against what they're supposed to produce. The main point is that the app or monitor showing your solar production can tell you something is wrong, but it usually can't tell you why. A drop in output could mean a failed panel, a loose connection, shading, dirt buildup, or a wiring fault, and figuring out which one requires actual testing, not just watching the numbers on a screen. The article recommends this kind of testing happen when a system is first installed, then again on a regular basis, roughly once a year, with some checks done twice a year for best results. For a homeowner with rooftop solar, the takeaway is that production monitoring alone doesn't guarantee your system stays healthy over its lifespan. Panels and wiring degrade from heat, moisture, and age even when everything looks fine from the outside, and problems can build quietly until they show up as a bigger repair bill or a safety issue.
Solar Power Passes 3 Terawatts!
The world has now installed more than 3 terawatts of solar power, according to data from research firm BloombergNEF. To put that growth in perspective: it took until around 2022 to reach the first terawatt, another terawatt came within a few years after that, and the jump from 2 to 3 terawatts took less than two years. BloombergNEF expects the pace to keep accelerating, with global solar capacity reaching 9 terawatts by 2036. Much of the recent growth has come from China, but adoption is spreading well beyond the countries that led early on. In 2020, only 42 countries had at least 1 gigawatt of solar installed; that number is now up to 74. Developing countries such as Pakistan, Nigeria, the Philippines, and Cuba are adding solar quickly, and by 2036, developing nations are expected to account for more than a quarter of new solar growth, while wealthy countries' share of that growth is expected to shrink to about 20 percent. For homeowners, this is mostly a sign of where the broader energy market is headed rather than something that changes any specific program or rebate right now. As solar panels, batteries, and related equipment keep getting cheaper and more common worldwide, it can make home solar and battery storage more affordable and accessible over time, though what's available where you live still depends on local utility rules, state incentives, and federal programs.
Lucid unveils its 2027 Air EV lineup with a new Stealth package
Lucid has released its 2027 Air lineup, with prices holding steady across all four trims: the Pure ($70,900), Touring ($79,900), Grand Touring ($114,900), and Sapphire ($249,000). That's notable given tariffs on imported vehicles and parts have been pushing up costs industry-wide, and the $7,500 federal EV tax credit expired at the end of September 2025. The Grand Touring remains the longest-range EV sold in the US, rated up to 512 miles. The main change for 2027 is a simplified options list on the entry-level Pure trim, plus a new $6,250 Stealth & Sound Package that bundles popular add-ons into one choice. That package includes a pick of 19-inch or 20-inch wheels and a choice of three metallic paint colors. The Touring, Grand Touring, and Sapphire trims carry over largely unchanged. None of this changes what it costs to charge an EV at home, but if you're weighing an electric car purchase alongside home upgrades, it's worth remembering that home solar can offset a good share of your charging costs over time, especially as electricity rates keep rising. That's a separate decision from the car itself, but the two often get planned together by homeowners looking to cut both driving and utility costs at once.
Colgate-Palmolive develops global system for zero waste
Colgate-Palmolive has earned 53 TRUE zero-waste certifications across 27 countries, a program that verifies factories and offices divert almost all their waste from landfills and incinerators. TRUE is run by the same group behind LEED, the well-known green building rating system. The company's push started back in 2010 and has grown to cover manufacturing plants, warehouses and offices on six continents, with 23 more sites working toward certification now. The work isn't just about recycling more. Plants have redesigned packaging to use less plastic, found composting solutions for scrap toothpaste and dental cream, switched from disposable to reusable materials, and turned old toothpaste tubes into flip-flops or construction panels. These changes have also saved money — one Italian plant earned about $161,000 from recycling revenue in a year, and a Kansas pet-food plant saved over $60,000. Some sites have hit waste-diversion rates above 99%. For homeowners, the most relevant detail is packaging: Colgate has rolled out a recyclable toothpaste tube, now used for 98% of its U.S. products, and says 96% of its packaging worldwide is designed to be recyclable, with a goal of 100% by 2030. The company notes, though, that many local recycling programs don't yet accept toothpaste tubes, so it's worth checking whether your own curbside or drop-off recycling program takes them before tossing one in the bin.
Sage Geosystems brings its first next-gen geothermal plant online
A company called Sage Geosystems has started producing power from a new kind of geothermal plant near San Antonio, Texas. It's only the third project of its type to connect to the U.S. power grid. Unlike traditional geothermal, which only works in rare spots where hot water and permeable rock happen to line up naturally, this "enhanced" approach drills into hot rock almost anywhere, fractures it to create underground pockets, then uses pumped water to capture the heat for electricity. The Texas pilot, running since April, produces 3 megawatts and has performed well over more than 120 days connected to the grid. One notable result: the system lost less than 10 percent of the water it cycled through, a sign the technology can run efficiently at larger scale. The company says this data will guide an upcoming project with geothermal firm Ormat in Nevada, expected to start producing power in 2027 and reach full scale in 2028. That project, in turn, is meant to set up a bigger deal: 150 megawatts of geothermal power for Meta, to be built somewhere east of the Rockies. Sage says it has about a gigawatt of projects in the pipeline overall. For homeowners, this isn't a technology you'd install at home — it's aimed at supplying power to the electric grid, not individual houses. But it points to more clean, round-the-clock electricity potentially feeding into the grids that power homes, as demand for electricity keeps climbing.
Unearthing the Future: Inside NLR’s Summer Educational Programs
This story is about summer internship programs at a Department of Energy national laboratory in Colorado, not about a new energy technology or rebate program homeowners can use. It profiles students studying things like organic semiconductors, electrochemistry, and mineral recovery from mine waste, along with a high school outreach program teaching kids about batteries, fuel cells, and semiconductors. The research described is early-stage and academic, aimed at building future scientists and engineers rather than producing a product or service ready for home use. None of the work covers residential energy upgrades, heat pumps, insulation, or rebates. The closest connection is background: some of the research (like faster electron movement in materials, or recovering minerals used in electronics) could eventually feed into future consumer technology such as better displays, batteries, or semiconductors, but the piece gives no timeline or product for that. For a homeowner tracking energy-efficiency news, there is no immediate takeaway here. This is a workforce and research story, not a program, incentive, or technology you can act on for your house right now.
All aboard Amtrak’s sleeker, cleaner new trains
Amtrak is rolling out 83 new trainsets, called Airo, starting this fall. The first eight will run on the Cascades route connecting Seattle, Portland, and Vancouver, B.C. The trains will eventually reach more than a dozen routes across New England, Pennsylvania, and the mid-Atlantic. Built by Siemens, the $8 billion investment includes trains that can hit speeds up to 125 mph and can switch between diesel and electric power without swapping locomotives. That should cut wait times on routes like the Northeast Regional, where trains currently sit at Washington's Union Station for up to an hour while crews change engines. The new locomotives meet the EPA's strictest emissions rules for trains (Tier 4), cutting particulate matter and nitrogen oxide even where the diesel engines are still used on unelectrified track. Rail already uses relatively little energy compared to how many people it moves, and cleaner locomotives push that efficiency further. The Cascades trains will also carry more passengers than the current cars, which advocates say could support more frequent service in the Pacific Northwest. This is a federal infrastructure story more than a household one, so there's nothing here that requires action on your part. But if you live near one of the routes getting new trains — the Pacific Northwest first, with the Northeast Regional getting them in 2027 — you may notice faster trips, more capacity, and fewer delays tied to engine swaps in the coming years. Funding for the rollout includes $3 billion recently awarded to Amtrak by the federal government, even as separate funding cuts to passenger rail have been proposed.
EDF power solutions secures PPAs with NV Energy for 400 MW solar-plus-storage project
A large new solar and battery storage project is coming to Nevada, though it will take a few years to come online. NV Energy, the state's utility, has signed 25-year contracts to buy power from the Winston Energy Project, a 400 MW solar farm paired with 1,600 MWh of battery storage in Lyon County. The project is being built by EDF power solutions North America and is expected to start delivering electricity in October 2029. The project is designed to work with a new high-voltage transmission line NV Energy is building, called Greenlink North, which will run about 235 miles from Ely to Yerington and is due in service by December 2028. Once running, the Winston project is expected to produce about 1.11 GWh of renewable power a year and generate $100 million in local tax revenue, with more than 400 workers employed during peak construction. For Nevada homeowners, this is a sign that more solar-plus-storage power is being added to the state's grid over the next several years, which utilities generally point to as a way to keep electricity supplies steady and support future rate stability. It does not involve any rebate or program homeowners can apply for themselves — it is a utility-scale power deal, not a home upgrade incentive. EDF, which develops solar and storage projects across North America, already operates other solar and battery facilities in Nevada and has additional projects in development in the state.