Energy efficiency news.
Rebate updates, policy changes, and technology developments — aggregated from 50+ sources, AI-enriched, and scored for relevance.
Total Energy News – July 2026
This is mostly a Vermont energy newsletter with events and networking notes, but a few items touch on things homeowners might care about. Vermont's Department of Health has a webpage on climate and heat safety, with maps of cooling sites, tips on staying safe in hot weather, and safety information on swimming and algae (cyanobacteria) in lakes. The state is also tracking a real trend: Burlington has seen a 155% increase in "extreme heat days" (87 degrees or higher, accounting for Vermont's humidity) since 1960. That data will appear in a broader September report on Vermont energy affordability and emissions. For homeowners, more hot days can mean more reliance on cooling, which ties into insulation and heat pump decisions, though no new rebate or program was announced here. On the funding side, the Regional Greenhouse Gas Initiative, a program among East Coast states, is generating money states can use to cut emissions or lower energy bills, though specific amounts for individual states were not given. Separately, Washington state has agreed to link its carbon market with California and Quebec, which is expected to help stabilize prices for businesses and consumers there. Also noted: Vermont has opened applications for Volkswagen settlement funding, $5,909,575 total, to help fleets replace diesel vehicles and equipment with zero-emission options. This applies to public and private fleets, not individual household vehicles, with monthly application deadlines through the state's Department of Environmental Conservation.
Silicon Valley’s Bet on the Trades Could Be Good for HVACR
Big tech is putting money behind the skilled trades. Google has committed $50 million to help train more than 300,000 workers for fields like HVACR (heating, ventilation, air conditioning and refrigeration), and Meta has launched a free nationwide training program, America's Workforce Academy, that covers costs and requires no prior experience. The push comes as the industry struggles to find enough technicians to keep up with demand. For homeowners, this mostly matters as a long-term signal rather than something that changes your plans right now. More people training for HVAC work could eventually mean shorter waits for service calls and installations, especially as heat pumps and other efficiency upgrades become more common. But the pay picture is more modest than some headlines suggest: the median wage for HVAC mechanics and installers was about $59,810 as of May 2024, with typical pay ranging roughly $46,000 to $81,000. Six-figure incomes do happen, but usually only after years of experience or a move into supervisory roles, not right out of training. The real test will be whether these new workers stick with the trade once they're hired. Enrollment in two-year HVAC associate degree programs jumped nearly 29% from spring 2024 to spring 2025, showing real interest. Whether that translates into more technicians available in your area long-term depends on whether employers offer steady pay and real paths for advancement, not just entry-level jobs that compete with retail wages.
PJM capacity prices hit price cap, reserve shortfall grows
The grid operator that manages electricity supply across 13 Mid-Atlantic and Midwestern states plus Washington, D.C. — called PJM Interconnection — just ran its yearly auction to line up power supply for 2028-2029. Prices hit the maximum allowed, $325 per megawatt-day, across the whole region. That cap kept prices from spiking even higher: without it, prices would have been much steeper, especially in northern Illinois. Despite the high prices, very little new power supply showed up to bid, and the amount of "demand response" — homes and businesses agreeing to cut electricity use at peak times in exchange for payment — actually fell. PJM is now about 6.8 gigawatts short of its target reserve margin, an increase from the last auction. Part of the strain comes from rising electricity demand tied to data center construction in the region. For most households, this auction shouldn't change your electric bill much right away, since prices came in close to last time's. Large industrial customers are seeing far bigger cost increases than a few years ago, and that gap is expected to continue. Regulators, utilities, and industry groups are now debating changes to how PJM buys power and how data centers are charged, which could affect electricity costs and reliability in the region over the next few years. If you live in a PJM state, it's worth keeping an eye on how these reforms play out, since they'll shape future rates.
PJM Capacity Auction Hits Price Cap for Third Consecutive Time
PJM, the grid operator serving 67 million customers across the Mid-Atlantic and parts of the Midwest, just ran its yearly auction that sets electricity capacity prices for 2028-2029. For the third year running, prices hit the maximum allowed cap. That's the ceiling put in place last April, when a group of state governors negotiated a two-year price limit to try to soften the blow. Even with that cap, costs keep climbing: one independent analysis found PJM customers' total capacity costs jumped from $2.2 billion in 2024 to $14.7 billion the following year, an increase of $12.5 billion. Much of the power secured in this auction will come from fossil fuels rather than cheaper renewables — 46 percent from gas and 18 percent from coal, adding up to 64 percent fossil generation. Critics point to rising electricity demand from data centers as a major driver of these costs. PJM plans a separate "backstop" auction in September aimed at securing power specifically for large energy users like data centers, though it would run under different rules and a different price cap than the regular auction. For homeowners in the PJM region — which spans states including Pennsylvania, Ohio, Virginia, Maryland, New Jersey, and others — this points toward continued upward pressure on electricity bills in the coming years, separate from anything happening at your own house. It's a reminder that home upgrades like better insulation or a heat pump can help offset rising utility costs by cutting how much power your house actually uses.
Science Is Under Attack. But Scientists Are Speaking Up
The White House's Office of Management and Budget proposed a rule on May 29, 2026, that would change how billions of dollars in federal research funding get decided. Instead of relying mainly on peer review, where scientists with relevant expertise evaluate grant applications, the rule would give political appointees more say over which projects get funded, based on whether the work fits the administration's priorities. Grants could be denied or cut off if results are politically inconvenient, and researchers could face new barriers to working with international colleagues or attending conferences. This isn't limited to lab research. The same rules would apply to federal discretionary funding broadly, including disaster relief programs. Critics, including the Union of Concerned Scientists, argue the change would sideline expert review, restrict research on topics like LGBTQ+ health and diversity, and raise constitutional concerns about free speech and the separation of powers between Congress and the president. The public comment period drew nearly half a million responses, with the vast majority opposed, including formal objections from scientific societies covering fields from physics and chemistry to cancer research and astronomy. Some members of Congress have also pushed back. Separately, the Scientific Integrity Act, recently reintroduced in the Senate, aims to build longer-term protections against political interference in federal science and require agencies to base decisions on evidence. For homeowners, this story is about federal policy on research funding rather than a home upgrade program, and it does not change any current rebate or incentive available for energy efficiency projects.
US state of solar report: Q2 2026 was huge for plug-in solar legislation
States were busy with rooftop solar rules this spring. A quarterly tracking report found that 45 states, plus Washington DC and Puerto Rico, took some action on home and small-scale solar policy between April and June 2026 — 284 actions in all. Illinois, Maryland, New Jersey, Virginia, New Hampshire, Connecticut, Maine and Rhode Island saw the most activity. Most of the changes touched net metering (the credit you get for solar power you send back to the grid), community solar (shared solar projects you can subscribe to without panels on your own roof), and fixed monthly charges on utility bills. One trend stood out: half the states considered bills to make "plug-in solar" easier to install. These are small, simple solar setups — think a panel or two that plugs into an outlet — aimed at people who can't put a full system on their roof, such as renters or condo owners. Lawmakers in several states also moved on bigger changes: Connecticut ordered new net-metering and community solar programs, Maryland required a replacement for its net-metering program, Virginia regulators ruled on Dominion Energy's net-metering successor, Texas approved a new solar rate for El Paso Electric customers, and an Arizona court struck down a grid-access charge that Arizona Public Service had been charging solar customers. None of this changes anything at your house immediately, but it signals where state rules on solar credits, fees and community programs are headed. If you're weighing solar or already have it, it's worth checking whether your state made changes to net metering, fixed charges, or new plug-in solar options this year.
Lithium still dominates battery storage – but for how long?
Battery storage, whether paired with home solar or installed on its own, still runs almost entirely on lithium, and prices keep dropping. Battery pack costs fell to about $108 per kilowatt-hour in 2025, down 93% from 2010, with large stationary packs made from lithium iron phosphate (LFP) approaching $70/kWh. LFP is the version of lithium chemistry favored for home and grid storage because it holds up better to heat, lasts longer, and costs less than the nickel-based lithium batteries used in electric cars. These cost drops are one reason storage batteries have become more affordable for homes and businesses, with some commercial projects now paying for themselves in three to five years. A newer technology, sodium-ion batteries, is starting to reach the market. Sodium-ion stores less energy for its size than lithium and isn't yet made at large scale, but it may perform better in cold weather and could ease reliance on lithium supply chains, much of which run through China. For now, sodium-ion looks more like a complement to lithium than a replacement, useful for applications where compact size matters less. For homeowners, the practical takeaway is that LFP lithium batteries remain the standard choice for home storage systems for the foreseeable future, and their falling prices are part of why storage has become more affordable to pair with rooftop solar or backup power setups. No shift away from lithium is expected soon, though the market may eventually offer more chemistry options depending on the specific need.
As rooftop solar grows, industry expert warns of rising fire risks
A solar industry engineer is raising concerns about fire risks tied to rooftop solar panels, pointing to a recent Los Angeles warehouse fire that involved a rooftop solar array and burned for days, producing heavy smoke. Lawrence Shaw, an Arizona-based solar installer, has modeled fire trends using U.S. Fire Administration data and projects that California alone could see 122 solar-related fires by 2030, with most of the nation's incidents concentrated in the Southwest. Shaw's main concern is heat. He argues that panels mounted flush against roofs, without enough of a gap for air to circulate, trap heat that can damage electrical components and raise fire risk. He recommends leaving more than six inches of space between panels and the roof, though he acknowledges this clashes with the look many homeowners and neighborhood codes want, since visible gaps make solar installations less sleek and less discreet. None of this means solar panels are unusually dangerous. Shaw compares them to electrical transformers, which occasionally fail or catch fire simply because there are so many installed, not because the technology itself is flawed. His worry is that as rooftop solar keeps growing, especially in urban and suburban areas where open land is scarce, familiarity with these systems among homeowners and emergency responders hasn't kept pace. He's pushing for industry-wide safety standards, better fire-incident recordkeeping, and alternatives like ground-mounted solar canopies over driveways, which stay naturally ventilated. For homeowners, the takeaway is less about panic and more about awareness of how their own system is mounted and ventilated if they already have or are considering rooftop solar.
Where Do We Go From Here, Part 1
This is a personal account from a clean energy advocate who lived through Hurricane Helene in Western North Carolina in September 2024. He describes flying home to Asheville as the storm hit, then the aftermath: no power, water, internet, or cell service for days, downed trees blocking roads, and a harrowing trip to check on his parents through washed-out neighborhoods. The storm's toll was severe: 250 deaths, including 157 in the Asheville area, 125,000 housing units damaged or destroyed, 6,000 miles of roads and more than 1,000 bridges and culverts damaged, and 160 municipal water and sewer systems affected. Total damage reached $80 billion, with $60 billion in North Carolina alone. The piece notes that 96 percent of property damage from the flooding and landslides in North Carolina was uninsured, leaving many residents to cover repairs themselves. More than 2,000 landslides added an estimated 6.6 million cubic yards of debris to local waterways, and clearing it required about 85,000 dump-truck loads. The author cites research finding that record-hot Gulf of Mexico waters, made far more likely by climate change, fueled the storm's strength, and that climate change made Helene's heavy rainfall 70 percent more likely. He argues no region, including places once seen as sheltered from climate extremes, is safe from these risks. There is no rebate program or homeowner action mentioned here; this is a reflection on the storm's toll, with a second part promised.
Hoymiles introduces first UL 3700-compliant plug-in microinverter to U.S. market
A new device could make small-scale, plug-in solar power a real option for renters and homeowners without room for a full rooftop system. Hoymiles has released the HiFlow Pro, a microinverter made for plug-in solar setups—small panels that plug into a regular outlet and work on balconies, patios, or small roof spaces. It's the first product in the U.S. to meet a new safety standard called UL 3700, which sets rules specifically for this kind of consumer-installable solar gear, covering things like shutting off safely and preventing power from backing up into the grid. The microinverter converts the panel's power efficiently, even as sunlight conditions change, and is built to handle dust, water spray, and a wide range of temperatures. You can connect up to four of these units at once, giving a combined output of 1,200 watts while staying within the electrical limits of a normal household circuit. Setup is meant to be simple: the company says it takes under a minute, using Bluetooth and Wi-Fi to pair with a phone app for monitoring. The bigger idea behind the product is access—plug-in solar could let renters and people in apartments or multi-family buildings generate some of their own power without the cost or commitment of a permanent rooftop system. If this approach catches on, it may open up solar to households that couldn't consider it before, though availability and rules for plug-in solar can still vary depending on where you live.
Unprecedented Earth: Record Super El Niño, Marine Heatwaves, and Heat Domes
Climate scientists say a strong El Niño, a natural warming cycle in the Pacific Ocean, is likely to become the strongest ever recorded, with forecasts giving it roughly 90% odds. Combined with ongoing warming from fossil fuel emissions, models project global temperatures could spike far above the 1.5°C and 2°C limits set in the Paris climate agreement, possibly reaching monthly readings of 2°C or more in early 2027. Ocean surface temperatures are already breaking records, and marine heat waves, patches of unusually hot ocean water, now cover close to 40% of the world's oceans, including areas near Europe that helped fuel a deadly heat dome there last month. That same pattern of ocean heat is tied to a heat dome now sitting over the western United States, expected to last through the end of July. Salt Lake City and Helena, Montana have already broken all-time high temperature records, and researchers say climate change made those extreme temperatures roughly five times more likely. For homeowners, this points to more frequent and more intense heat waves in the years ahead, not just a one-time event. Cooling costs and heat exposure are likely to keep climbing as these patterns continue. If your home relies on an older air conditioner or has poor insulation, hotter summers like this one raise the stakes for how well your house holds up during extended heat, and it may be worth looking into what upgrades or rebates are available in your state to improve cooling efficiency and comfort.
The grid’s fastest-growing resource isn’t generation. It’s flexibility.
Electricity demand is rising fast, mostly from data centers and growing electrification, and building new power plants and power lines to keep up takes years. This piece argues that a faster fix already sitting in homes and businesses is "flexibility" — the ability to shift when and how electricity gets used, stored, or sent back to the grid. That includes things like home batteries, smart thermostats and appliances, and electric vehicles that can eventually feed power back into a home or the grid (called vehicle-to-grid, though that technology is still early and not widely available yet). The bigger story here is about how the grid is run, not new gadgets you'd buy. PJM, the regional grid operator covering much of the mid-Atlantic and parts of the Midwest, is under pressure from federal regulators to speed up how it approves new rules for flexible power use and connects big new users like data centers to the grid. A federal hearing on July 23 will look at whether PJM's decision-making process — which the author says has taken years to approve even simple changes — can move fast enough to make room for flexibility resources. For homeowners, there's no direct action here. But if your utility is in PJM's territory, this debate could eventually shape whether programs that pay you for using less power at peak times, or for letting your EV or battery help the grid, expand and pay more, or stay stuck behind slow rule-making.
Petroleum markets responded to disruptions in the Middle East in the second quarter
Oil prices swung sharply in the spring after shipping disruptions in the Strait of Hormuz, a key Middle East waterway that much of the world's oil passes through. Brent crude, a global oil price benchmark, hit $118 a barrel in late April, then fell to $72 by late June as tensions eased. A June 17 agreement between the U.S. and Iran aimed at reopening the strait helped prices settle down through the rest of the quarter, though renewed strikes in early July pushed prices back up. The disruption also squeezed supplies of gasoline, diesel, and jet fuel worldwide, which pushed U.S. refineries to run harder than usual and export more fuel abroad. U.S. distillate (diesel and heating oil) exports and jet fuel exports both hit record highs, as other countries turned to American refiners to make up for lost supply. Refiners shifted some production toward jet fuel in particular, since global demand for it jumped the most. For homeowners, the main takeaway is that oil and fuel markets stayed volatile this spring due to overseas events rather than anything happening domestically. If you use heating oil or diesel for home heating, prices may have moved with these swings rather than settling into a predictable seasonal pattern. Gasoline markets were also tighter than usual, with refinery margins running well above last year's levels. None of this points to a new rebate or program, but it helps explain why fuel prices bounced around more than normal this spring and early summer.
The Pentagon is blocking more than 150 wind projects over drone fears
The Pentagon has effectively frozen permitting for more than 155 new wind projects across 24 states, citing concerns that wind turbines could interfere with military radar and create risks around drones. The military has long reviewed wind projects because spinning turbine blades and steel towers can confuse radar systems, but officials now say existing fixes may not address newer drone threats. The freeze has lasted almost a year, with no word on when or if approvals will resume. Without this sign-off, developers say they can't get financing or insurance, so projects can't move forward. Wind industry groups call the freeze politically motivated and say it has already added $2 billion in costs, with some projects possibly missing a July 4 deadline to qualify for federal tax credits under the 2025 One Big Beautiful Bill Act. A coalition of energy companies has sued the Department of Defense, arguing the freeze was imposed without the normal public notice process and could cause delays serious enough to make some projects financially unworkable. The Pentagon argues it's simply taking time to review national security risks and doesn't owe the public formal notice since it hasn't changed any rule. This dispute affects large-scale wind farms and the broader supply of wind power nationally, not something that shows up directly on an individual utility bill right away. But if you live in one of the affected states, it's part of a pattern of slower approvals and cancellations reshaping how much wind energy gets built in the coming years.
Fastest Renewable Energy Growth Ever
A new global report finds renewable electricity generation grew 9.8% in 2024, the fastest pace on record, while non-renewable generation rose just 1.4%. Renewables now make up 31.7% of the world's electricity, driven largely by solar and wind. Asia led growth in absolute terms, and the Middle East posted the fastest regional growth rate at 17.3%. The report also points to a steep climb ahead. Turkey, which will host the next major UN climate conference, has set a goal of getting 35% of the world's total energy demand (not just electricity) from clean sources by 2035. Meeting that would mean renewables jumping from today's 31.7% share of electricity generation to about 78% within a decade, roughly 2.5 times current levels. Separately, the pace of new renewable capacity being built also hit a record in 2025, with renewables now accounting for just under half of all installed electricity-generating capacity worldwide. None of this changes any specific program, rebate, or deadline for homeowners. It is a snapshot of where the broader energy system is headed: toward more solar and wind on the grid, and toward electricity playing a bigger role in heating, transportation, and industry generally. For a homeowner weighing an upgrade like a heat pump or rooftop solar, the trend suggests the electricity you'd be relying on is getting cleaner over time, though how fast that happens where you live still depends on your own state's utilities and policies.
WattHub develops solar rooftop and carport project for California medical association
A homeowners association in Foothill Ranch, California has switched on a new solar system, combining rooftop panels and solar carports, at its Foothill Medical Center property. The system is expected to produce about 506 megawatt-hours of electricity a year. It was developed by WattHub Renewables and built by SunRenu Solar. What makes this deal notable is how it was paid for. The association got the solar system and a full reconditioning of its roofs at no upfront cost. WattHub structured the deal as a power purchase agreement, meaning the association pays for the electricity the system generates rather than paying for the equipment itself, and the payments cover both the solar installation and the roof work. According to WattHub, this approach solves a common problem for older buildings: they need a new roof before solar makes sense, but the roof cost alone often stops the project. For homeowners, this is mainly a commercial and HOA story rather than something that changes options for a single-family house. But it points to a financing pattern worth knowing about: pairing solar with necessary roof repairs under one contract and one bill, rather than treating them as separate expenses. WattHub says it plans to apply the same model to other commercial HOAs in Southern California, so homeowners in shared communities with aging roofs may see similar offers in the future.
AI threatens Big Tech’s clean energy agenda
Amazon, Google and Microsoft are pouring roughly $750 billion combined into data center expansion in 2025 and 2026, mostly to run AI. That building boom is driving up their electricity use and, with it, their reported carbon emissions. Google's power consumption jumped 37 percent in 2025 to 43.6 million megawatt-hours, its biggest single-year increase ever and enough to power the state of Washington for a year. Microsoft's electricity use rose 24 percent, and its emissions tied to that power climbed 21 percent. Amazon reported a 34 percent rise in emissions from electricity, though it did not disclose total power use. None of the three has walked back its long-term climate targets, which mostly point to 2030 and beyond. To get there, they are leaning on nuclear power: Amazon has signed deals for close to 2 gigawatts plus two new projects this year, Microsoft is backing experimental fusion technology, and Google has committed to nuclear capacity in Ohio. They are also investing in large batteries to store solar and wind power so it can be used around the clock, and in clean power projects in Asia, a region all three flag as harder to decarbonize. This is a corporate energy story rather than a homeowner one. It does not change any rebate program, tax credit, or home upgrade option. It does matter for the bigger picture of the country's electric grid, since AI's growing appetite for power is now shaping how much clean energy gets built, where, and how fast.
Data center power shifts favor BESS, solid-state transformers
This is news about how data centers get their power, not something that changes your own energy bill or upgrade options directly. But it points to some shifts worth knowing about if you're paying attention to where energy demand and grid strain are heading. Data center builders are moving away from diesel backup generators toward battery storage systems, similar in concept to home battery backups but at a massive scale. They're also using "solid-state transformers," a newer, more efficient type of equipment for converting electricity, which can cut out much of the hardware traditionally needed. Interestingly, some of the same battery and inverter makers that supply home solar systems, including Enphase and SolarEdge, are being eyed for this data center work, since their equipment is technically capable of the job. The other trend is that smaller, local data centers, sometimes called "inference nodes," are being built or expanded using local microgrids rather than waiting years for a utility to connect them to the main grid. This reflects a broader push toward smaller, localized power systems instead of relying entirely on utility buildout. None of this changes what's available to homeowners right now in terms of rebates or upgrades. But it's a sign that batteries and localized power systems are becoming central to how the country handles rising electricity demand, not just backup for storms, but a core part of new energy infrastructure.
Solar inverter manufacturer EPC Power expands for data center demand
Inverter maker EPC Power is opening a second factory in Fountain Sc, nearly tripling its production capacity. An inverter is the equipment that converts power from solar panels or batteries into the type used in homes and on the grid. The company says the new 167,000-square-foot plant is a response to rising demand for power equipment used in AI data centers, not homeowner solar directly. The factory will build the company's M and MRACK series inverters, which are used for solar, grid, and battery storage systems, as well as data centers. EPC Power expects the plant to reach full production by the end of July, adding 27 gigawatts of annual capacity, and says it will create 275 new jobs. For a homeowner, this news is mostly about industry supply chains rather than anything that changes costs or rebates on your own roof. More domestic inverter manufacturing capacity could, over time, help keep supply steady for solar and battery equipment used in home installations, since it reduces reliance on imported components. But this expansion is aimed at utility-scale and data center customers, so it does not come with any new incentive, rebate, or program that directly affects homeowners right now.
Unique non-subscription community solar array proposed for Boise, Idaho
Boise is moving ahead with its first community solar project, a $50,000 pilot included in the city's FY 2027 budget, which the City Council has advanced with a final vote set for August 25. Solar panels donated by a local company will go on the roof of a city-owned building. This will lower that building's power bills for more than 20 years, and the city plans to give $5,000 of those savings each year to El-Ada Community Action Partnership, a group that helps low-income residents with rising power bills. That's what makes it "community solar" — the savings are shared with people across the city rather than just benefiting one property owner. The project follows more than two years of pressure from Idaho Sierra Club's youth team, who pushed the city to follow through on a 2019 commitment to build 500 kilowatts of community solar every five years starting in 2025. The timing also matters for cost: federal tax credits for large solar projects are set to expire at the end of next year under recent federal legislation. By building in FY 2027, the city can still claim a 30% tax credit through a program called Direct Pay, which lets municipalities receive that credit directly. This particular project won't put panels on anyone's home or offer a subscription homeowners can sign up for. But it signals that Boise is restarting its community solar efforts, and a similar project is in the works in Moscow, Idaho. Homeowners interested in local solar options may want to watch for how these pilots expand.
Commercial Water Heater Platform Marks 30 Years
A.O. Smith is marking 30 years of its Cyclone commercial water heater line with updates to the Cyclone Flex, a high-efficiency model. The company says the new version is easier to install, operate, and service. Models range from 100,000 to 500,000 Btuh and reach thermal efficiencies up to 98 percent, meaning very little of the fuel's energy is wasted as it heats water. The updated unit uses a coil-style heat exchanger and an automatic gas control that adjusts to different fuel types on its own, so installers no longer need separate models or conversion kits for different gas supplies. It also connects to the internet for over-the-air software updates, and it has built-in leak detection with an optional automatic water shutoff, which can help limit damage if a leak occurs. This is commercial-grade equipment, built for large buildings rather than houses, so it will not show up as an option for a typical home water heater replacement. But the features involved, like automatic leak detection and shutoff, and gas controls that adapt to fuel changes, are the kind of technology that sometimes trickles down into residential products over time. For now, this is mainly a manufacturer milestone and product update rather than something that changes what's available for your own home.
The 10 Top Battery Integrators in the World
Research firm Wood Mackenzie has published its first ranking of the world's top makers of grid batteries — the large battery systems that utilities and power companies install to store electricity, not the kind homeowners put in their garage. The ranking covers "integrators," companies that build complete battery systems combining the battery, power electronics, and safety controls into one unit. Sungrow topped the list, followed by Tesla, CATL, and BYD. Rounding out the top ten were Fluence (the other US company), South Korea's LG, Finland's Wärtsilä, and several more Chinese firms. Six of the ten companies are Chinese. The report notes that global battery storage installations passed 100 gigawatts in a single year for the first time in 2025, a sign of how central these systems have become to power grids. Wood Mackenzie says buyers now pick suppliers based on more than price: companies that make their own core components, invest heavily in research, and can show years of installation experience are pulling ahead. Most of the top ten have over a decade of experience, make at least one major component themselves, and are turning a profit — factors that matter for long-term reliability and warranty support. None of this changes anything about home energy upgrades directly. These are utility-scale systems, not home battery products. But the ranking gives a sense of which battery makers are financially stable and technically strong industry-wide, which is useful background if you're ever comparing brands for a home battery tied to solar panels.
Sunrun ‘distributed data center’ pilot taps its home solar and battery network
Sunrun, the home solar and battery installer, is expanding a pilot that puts small computing devices — about the size of a desktop computer — inside homes that already have its solar panels and batteries. These "distributed data centers" would run AI computing tasks using power from the home's solar and battery system, rather than building large centralized data centers that strain local power grids. If you already have Sunrun solar and battery equipment, this could eventually apply to you. Sunrun says hosts would receive some form of compensation, though it hasn't said how much. The company hasn't announced pricing, a start date for wider rollout, or how many homes it wants to sign up — right now it's inviting people to join a waitlist. Sunrun has more than 1.1 million existing solar and battery customers it could draw from. A rival company, SPAN, announced a similar idea earlier this year working with NVIDIA, installing computing equipment in 100 new-build homes. Outside experts are divided on the concept: one computer scientist noted that smaller, distributed computing could ease pressure on local power grids as AI companies process more everyday requests (rather than training new models), but he also questioned whether homes are necessary for that benefit, and raised concerns about security for valuable computer chips sitting in private houses rather than guarded facilities. For now, this is a pilot program, not a program with set terms. If you have Sunrun equipment and are interested, the company's website has a signup list, but no details yet on what participation would actually involve.
GMC marks 25 years of Hummer with limited ‘ICON’ EV as sales sink 55%
GMC is celebrating 25 years of the Hummer name with a limited-edition Hummer EV called the ICON | 25, featuring a yellow paint color inspired by the original H2, a black interior, and serialized badging. It's mostly a cosmetic package for the 2027 model year, offered on higher trims of both the Hummer EV pickup and SUV, with pricing to be announced closer to production later this year. More relevant for anyone considering an electric truck: every 2027 Hummer EV now comes with a native NACS charging port, the same plug Tesla uses, so it can charge at Supercharger stations without an adapter. The trucks also keep their vehicle-to-home feature, which can power a properly equipped house during an outage if paired with GM's separate charger and hardware kit. Five new exterior colors and new wheel options are being added as well. The update comes as Hummer EV sales have dropped nearly 55% so far this year. Part of the reason is that the federal $7,500 EV tax credit expired in late 2025. The Hummer EV was always priced too high to qualify for that credit on a purchase, but leasing used to offer a workaround, and that option disappeared once the credit ended. For homeowners weighing a large EV like this, it's worth knowing that pairing an electric vehicle with home solar can help offset the higher running costs, and options like leasing solar with no upfront payment exist in many states.
Hyundai opens $5 billion battery plant as it pushes to become America’s #2 EV brand
Hyundai and battery maker SK On have opened a $5 billion battery plant in Bartow County, Georgia, part of Hyundai's larger $12.6 billion Metaplant America complex. The plant is starting production now and will gradually ramp up, supplying batteries first to Hyundai's nearby Metaplant, where the IONIQ 5 and IONIQ 9 electric SUVs are built. When running at full capacity, the plant is expected to produce enough batteries for 35 GWh worth of vehicles a year. Hyundai has now opened two battery plants in Georgia this year, including one with LG Energy Solution near Savannah in April. For homeowners, this isn't about home energy upgrades, but it signals Hyundai's push to build more of its EV supply chain in the US, which the company says is helping it offer lower prices. The 2026 IONIQ 5 starts at $35,000, and Hyundai recently launched a promotion with 0% financing and up to $10,000 off electric vehicles. If you're weighing an EV purchase alongside home upgrades like a heat pump or a home charger, this kind of pricing and incentive activity is worth watching, since automakers are competing harder on cost as domestic battery production ramps up. Hyundai is also closing in on Chevrolet for the number-two spot among EV brands sold in the US, trailing only Tesla. In the first half of 2026, Hyundai sold 26,936 EVs versus Chevrolet's 28,267, a gap of just over 1,300 vehicles, while Chevy's sales fell sharply from last year.
Nebraska wants data centers to come clean about water usage
Nebraska has passed a new law requiring data centers to report their annual water use and power demand to the state. Right now, the state doesn't even have an official count of how many data centers operate in Nebraska, and the only water-use figures available come from companies willing to share them voluntarily. Google reported its Nebraska data centers used about 732 million gallons of water in 2025, a number it expects to grow. Meta's data center in Sarpy County withdrew between 26.7 million and 37.5 million gallons a year from 2020 to 2024. Data centers need water to keep servers and buildings cool. Some cooling systems evaporate large amounts of water, while "closed loop" systems recycle water or coolant and can go years without needing more, though they typically use more electricity, which has its own water footprint. Google says it chooses cooling methods based on local water availability; Meta's Sarpy County facility uses a mix of both approaches. The bigger concern in Nebraska, an agricultural state where most water goes to irrigation, is that data centers are increasingly being built in suburban and rural areas, some of which already face water shortages or drought. State officials say the new reporting law is a first step toward understanding those risks better, though it doesn't change how much water any individual data center can use. For homeowners, the main effect for now is more public information about local water demands, not new rules on household water or energy use.
Holtec bets on small nuclear reactors in its IPO filing
Holtec International, a company that has mostly handled shutting down old nuclear plants, filed paperwork to sell shares on the Nasdaq. The move funds its shift toward building new reactors, including small modular reactors (SMRs) — smaller nuclear plants built in standard, repeatable designs meant to cost less and go up faster than traditional giant reactors. Holtec's version, the SMR-300, would need only about 15 acres and roughly three years to build, compared with hundreds of acres and nearly a decade for conventional plants. The company expects regulatory approval by 2029 and hopes to have its first SMR running in the early 2030s. None of this changes anything at your house right now, but it points to where nuclear power may be headed in the coming years. Holtec is also restoring the Palisades plant in Michigan — the first attempt to bring a fully shut-down U.S. reactor back online — and plans to add two SMRs there. If that works, it may pursue similar projects at other sites it owns in New Jersey, Massachusetts, and New York, and possibly at the Indian Point site in New York, though state officials there oppose the idea. For homeowners, the relevance is mostly about the broader electric grid: more nuclear capacity, if it gets built, could add steady, low-carbon power to the mix in some regions over the next decade. It doesn't affect home energy upgrades or rebates directly, but it's part of the larger push to meet rising electricity demand without more fossil fuel plants.
Google buys power from record-busting solar-battery site in Arkansas
Google has agreed to buy power from a massive new solar and battery project in Mississippi County, Arkansas, called the Steel River Energy Center. Developer Cypress Creek Energy broke ground on the site, which will eventually produce 2.45 gigawatts of solar power and 2.9 gigawatt-hours of battery storage, making it one of the largest solar-plus-storage plants in the country. Google is buying the output of the first two phases, which will total 1.6 gigawatts of solar and 1.9 gigawatt-hours of storage once complete in 2029. The power will flow into the regional grid run by Entergy Arkansas rather than directly to Google, helping supply the utility's system, including data centers in the state. For homeowners, this isn't a program you can sign up for, but it reflects broader trends worth knowing about. Solar paired with batteries is now often the cheapest and fastest new electricity source to build, which can affect what shows up on your utility bill over time as more of it comes online. The project also relies heavily on U.S.-made materials, including steel, solar panels, and batteries, part of a wider push to build more clean-energy equipment domestically. The project is also notable because it's moving forward despite recent federal policy changes, including new tariffs and the loss of a major solar tax credit, that have made things harder for solar developers generally. Arkansas offers no special state incentives for renewable energy, so this project had to compete on cost alone, a sign of how affordable solar and storage have become even without extra government support.
25% of EU Power Came from Solar for the First Time in June
Solar power hit a new high across the European Union in June, generating 25% of the bloc's electricity for the first time. That's 52 terawatt-hours, beating the previous record of 47 terawatt-hours (23%) set just the month before, in May. Solar was the EU's single largest power source for the month, ahead of nuclear (21%), gas (15%), wind (14%), and hydro (12%), with coal down at 8%. It's only the third month on record that solar has topped the list, following June 2025 and May 2026. The surge came during a summer of heavy demand for cooling amid record heat, with solar helping keep the grid supplied when other power sources lagged. The growth reflects a fast build-out of solar installations across Europe, with panels going from just 10% of EU power in June 2021 to a quarter of it five years later. Individual countries are setting their own records too. Spain topped a third of its power from solar in June (34%), Germany reached 36%, and Poland, despite being one of the EU's biggest coal users, hit nearly a quarter (24%) after adding more than 20 gigawatts of solar capacity since 2020. For homeowners, this is mostly a sign of how fast solar has become mainstream in Europe's power mix rather than something with a direct effect on U.S. household costs or programs, but it points to continuing momentum behind rooftop and grid-scale solar as an energy source.
AI for the electricity grid
Utilities in Europe are starting to use predictive maintenance, a system where sensors and software track the condition of grid equipment and flag problems before they cause outages. This is background infrastructure news rather than something that changes what a homeowner does, but it affects how reliable your power supply is and how the grid absorbs solar and wind power over time. In Finland, utility Helen uses sensors on cables, transformers, and substations to catch early signs of wear, such as gas buildup in transformers or electrical faults in cables, before they cause a blackout. This has let the utility stretch out testing schedules and cut costs, and the company already reports very short average outage times per customer each year. In Ireland, utility ESB is using similar tools on transformers and switchgear, saying it has helped avoid unplanned outages and delayed costly early replacement of equipment. Both utilities note this technology helps manage the growing number of solar and wind installations spread across remote areas, which are harder to inspect in person. The technology has limits. Sensors sometimes give false readings, retrofitting old equipment with new digital monitoring is difficult, and the upfront cost of sensors and software is significant. The International Energy Agency has also warned that grid investment across Europe is not keeping pace with the fast rollout of renewable power, which can cause delays connecting new solar and wind projects to the grid. Engineers interviewed say the industry still needs clearer shared standards before these AI-based monitoring tools are used more widely.
Geothermal Energy Will Help Make The Strait Of Hormuz Irrelevant
A US startup called Quaise Energy is developing a new way to drill for geothermal power, the heat that comes from deep underground. Instead of relying on drills that touch rock, Quaise uses a high-power microwave system to melt through it, reaching depths of 300 to 500 degrees Celsius. The company says this can unlock 10 to 100 times more power than older geothermal methods, and can be built at existing power plant sites to use their existing connections to the grid. Quaise just raised $134 million, with backing from Japanese energy giants JERA and Idemitsu, to support its Project Obsidian geothermal plant in Oregon. The first phase aims to deliver 50 megawatts, growing to more than 1 gigawatt by around 2030. That timeline would put it ahead of many planned natural gas plants, which are stuck waiting on equipment shortages, and ahead of nuclear projects, which face their own delays. None of this changes anything for homeowners right now. It is not a rebate program or a home upgrade option. It is a sign that geothermal power, once limited to a handful of sites in the western US, may expand to more of the country and even overseas as this drilling technology matures. If that happens over the next several years, it could add more steady, always-on electricity to the grid, alongside the wind and solar power that still lead the pack for cost and speed of construction.
Virginia SCC weighs Dominion data center transmission cost allocation
If you're a Dominion Energy customer in Virginia, a case now before state regulators could affect your monthly bill. Dominion wants to raise a charge called Rider T-1, which recovers costs for transmission line upgrades, to collect about $1.5 billion. The company says this would add roughly $2.90 a month to the average residential bill. Much of the new transmission spending is tied to the rapid growth of data centers in the state, and the real fight is over how much of that cost gets spread across all customers versus charged directly to the data center companies causing it. At a hearing this week, Virginia Gov. Abigail Spanberger's office, tech companies including Google, Amazon, Microsoft and Meta, Loudoun County officials, and consumer advocates all argued over the fairest way to divide these costs. Options on the table include requiring data centers to make upfront payments toward construction costs, changing the formula used to calculate each customer class's share of transmission expenses, and directly billing large data center customers for upgrades built specifically to serve them. A state commission attorney testified that no matter which method is chosen, ordinary ratepayers are still subsidizing new large data center customers. The State Corporation Commission must rule by August 1. The outcome won't change anything about home energy upgrades or rebates, but it will help determine how much of the cost of powering Virginia's data center boom lands on residential electric bills.
Hyundai cuts IONIQ 5 N EV prices by $6,300
This story is about a car, not home energy upgrades, so it doesn't fit what Retrofit Relay covers. For reference, here's a plain summary of the news: Hyundai cut the starting price of its 2026 IONIQ 5 N electric performance car by $6,300, bringing it to $59,900 before a $1,600 destination fee. That follows an earlier price cut of up to $9,800 on the standard 2026 IONIQ 5. The 2026 N model also gets a few updates: a built-in NACS charging port (the Tesla-style plug) so it can use Tesla Superchargers without an adapter, a charging cable that works for both slower home outlets and faster Level 2 charging, plus adapters for other charging equipment. It also gets more settings for its drift mode, a new exterior color, and small interior tweaks. None of this affects home electrical work, EV charger rebates, or weatherization programs. If you're weighing a home EV charger install or looking into rebates for one, that depends on your electric panel capacity and your state or utility's incentive programs, not on which car model you buy. Worth checking your own state's rules separately if a home charger is part of your plans.
Solar just became Europe’s biggest source of electricity – here’s the milestone it hit
Solar power hit a new high across Europe in June 2026, generating a record 52 terawatt-hours and supplying a quarter of all electricity used in the European Union that month. That made solar the EU's single biggest power source, ahead of nuclear, gas, wind, hydro, and coal combined for that month. A heat wave played a role: hot weather pushed up demand for air conditioning, and long sunny days let solar panels produce more power just when it was needed, while other sources lagged in the still, hot conditions. The bigger story is how fast solar has grown. Five years ago, in June 2021, solar supplied only about 10% of EU electricity. Since then it has grown more than 20% a year, making it Europe's fastest-growing power source, with the EU adding 65.1 gigawatts of new solar capacity in 2025 alone. So far in 2026, 18 EU countries have set new monthly records for solar's share of their electricity mix. Some countries are further along than others. Germany hit 36% solar in June, Spain reached 34% for the first time, and even Poland, still heavily reliant on coal, generated 24% of its electricity from solar. In Spain, that solar growth is also credited with saving households roughly €10 a month on electricity bills during a recent energy price spike. None of this changes rebates or incentives for individual homes, but it shows solar continuing to expand faster than expected across the continent.
Tern redesigns famous HSD cargo e-bike, making it smarter, stronger, and even more family-friendly
Tern has redesigned its HSD, a compact electric cargo bike built for hauling kids and groceries in tight city spaces. The bike keeps its small footprint, just under 5'9" long, so it still fits in elevators, hallways, and can be parked upright or partly folded to save space. But it now carries more weight: the frame supports up to 419 pounds total, and the rear rack alone can hold 176 pounds, enough for an adult passenger or a growing child plus gear. A longer wheelbase and lower center of gravity are meant to make the loaded bike more stable. Power comes from Bosch's newest motor system, quieter and more powerful than before, with a sportier version on some US models reaching 28 mph with pedal assist. New anti-theft features let riders lock the battery remotely or report the bike stolen. Some models also offer automatic shifting, either through an internal gear hub with a belt drive or a wireless electronic drivetrain, which takes one task off a rider's mind in traffic. The cockpit adjusts without tools to fit riders from under 5 feet to 6'9", so the same bike can work for different family members. A range of accessories, including child seats, weather covers, and waterproof storage, lets owners set the bike up for school runs, errands, or pet-hauling. Four models are available starting at $4,999, with pricier versions adding more features. Bikes are expected to reach North American and European dealers later this summer. For anyone weighing whether a cargo e-bike could replace car trips around town, this is one of the more heavy-duty options coming to market.
Tesla’s LFP battery holds its charge better, study says
This story is about EVs, not home energy upgrades, but it's worth a quick note if you or someone in your household is weighing an electric car. A new analysis of nearly 10,000 real-world battery tests in Sweden found that the same Tesla Model 3 ages very differently depending on which battery pack it has. The version with a CATL LFP (lithium iron phosphate) battery held onto 93.3% of its capacity after more than 62,000 miles, beating every nickel-based version of the car, including the pricier Panasonic packs, which fell to as low as 88.2%. The reason comes down to chemistry. LFP batteries are cheaper and less energy-dense, but they tolerate being charged to 100% far better than nickel-based cells, which Tesla recommends keeping at 80-90% for daily use. Over tens of thousands of miles, that difference adds up, so the "budget" battery actually holds up better long-term. This mainly matters for anyone shopping the used EV market, since two Model 3s of the same year and mileage can differ by five percentage points of battery health, and that isn't listed on the window sticker. There are now battery-health testing tools, including one from Tesla, that can check which pack a used car has and how much capacity it still holds before you buy.
Cypress Creek & Google Break Ground on America’s Largest Solar Project
Cypress Creek Energy and Google have broken ground on Steel River Energy Center in Mississippi County, Arkansas, which is set to become the country's largest solar power project. The first two phases will add 1.6 gigawatts of solar generation and 1.9 gigawatt-hours of battery storage to the local grid. Once all three phases are finished by 2029, the project will produce 2.5 gigawatts of solar and 2.9 gigawatt-hours of storage, enough to power more than 315,000 Arkansas homes a year. Google has signed a power purchase agreement to buy electricity from the first two phases, its largest solar-and-storage deal anywhere in the world. This isn't a project homeowners can sign up for, but it points to a broader shift: solar and battery storage made up 91 percent of all new U.S. electricity-generating capacity added in the first quarter of 2026. More regional solar and storage capacity generally supports grid reliability and can help keep electricity costs in check, according to Entergy Arkansas' CEO. The project also includes local benefits. Google and Cypress Creek are putting a combined $8 million into community investment funds. Google's $5 million share builds on an existing energy affordability program that funds community solar subscriptions for low-income West Memphis customers, home weatherization (sealing and insulating homes to cut energy waste) and safety upgrades in Mississippi County, and energy efficiency work in Arkansas schools. Cypress Creek's $3 million includes a $400,000 gift for a new elementary school playground.
How Is Tesla Offering 0% Financing?
Tesla is currently offering 0% financing on some vehicles, including the Model Y, which is worth paying attention to if you're weighing an EV purchase. With average car loan rates elsewhere running around 6-7%, a 0% rate amounts to a real discount, since Tesla is effectively covering the interest cost itself rather than lowering the sticker price. On a roughly $36,690 car loan at 6% interest over six years, the total interest would run about $7,222 — money you would not pay under Tesla's 0% offer. The current terms shown on Tesla's site call for about $3,300 down on a $39,990 Model Y, with loan terms up to 72 months, and stretching to 84 months in some cases. For a buyer, this is essentially free money that lowers the real cost of owning the car, even though the listed price stays the same. It is different from a price cut, since Tesla likely could not simply sell the car for thousands less without taking a loss, but the effect on your wallet is similar: less money paid out over the life of the loan. Zooming out, offering 0% financing broadly across the country also signals that Tesla is working hard to keep sales moving as its profit per vehicle has been shrinking. That does not change whether the deal is good for an individual buyer, but it is useful context if you are comparing this financing offer against other EVs or against your own home energy upgrade budget, since incentives like this can shift the math on what you can afford this year.
What to know about Elon Musk’s billion-dollar turbine deal
Elon Musk has personally bought APR Energy, a Florida company that owns one of the world's largest fleets of mobile gas turbines, in a deal worth around $1 billion. The purchase went through in mid-May but only recently came to light, through a Federal Trade Commission filing and a securities filing from Duos Technology Group, which had owned a small stake in APR's parent company. Notably, Musk bought the company as an individual, not through Tesla, SpaceX, or xAI. APR's turbines are portable, can run on different fuels, and can be installed in as little as 30 days to provide power either as a temporary bridge or a longer-term source, on-site or connected to the grid. The company has already been supplying power to AI data centers, including one deployment of about 100 megawatts for an unnamed hyperscaler. This fits a broader trend of tech companies turning to off-grid gas power to get data centers running faster than waiting for new grid connections. For homeowners, this deal itself has no direct bearing on your household or on residential energy programs. It's part of a larger story about how AI companies, including ones Musk controls, are racing to secure fast power for data centers using gas turbines rather than the electric grid. It's a sign of where a lot of demand and investment in gas-fired generation is heading in the tech sector, separate from anything homeowners would encounter through rebates or efficiency upgrades.
Someone is flipping Tesla Model S Signature for $260,000 — $100K+ markup
This is car news, not a home energy upgrade story, but it touches on solar in passing. A New Jersey dealer is trying to resell a Tesla Model S Signature — one of only 250 built as part of Tesla's farewell run for the Model S and Model X — for $259,995, plus a $495 fee. Tesla originally sold these Signature models to a small, invite-only group of existing owners for around $155,000, so the dealer's price is roughly $100,000 more than what Tesla charged. The car has just 297 miles on it and a clean title. Mechanically, it's the same as a standard Model S Plaid, with no new battery, no faster charging, and no range improvements — the premium is for the paint, gold trim, and a numbered dash plate marking it as one of the last ever built. The writer is skeptical the flip will succeed, noting that the original 2012 Model S Signature editions, despite being genuinely historic first-run cars, never became valuable collector items either. For homeowners, the relevant takeaway is the aside at the end: rather than betting six figures on a car's resale value, putting that money into home solar is framed as a more reliable way to get a return, since it can lock in savings against rising electricity rates. No specific rebate programs or deadlines are mentioned.
The ‘brutal reality’ of scaling low-carbon fertilizer
This news is about farm fertilizer, not home energy upgrades, but here's what it covers. Making nitrogen fertilizer takes a lot of fossil fuel and produces 5 to 7% of the world's greenhouse gas emissions. A company called Nitricity first tried to build small devices farmers could use on their own fields to make fertilizer without that heavy carbon footprint. That plan did not hold up against market realities, so the company shifted course. Nitricity now runs a centralized plant in California that turns recycled almond shells into liquid organic fertilizer. In a podcast interview, the company's CEO, Nico Pinkowski, talks about how hard it was to scale a new approach inside such an established industry, the challenges of financing a first-of-its-kind commercial plant, and why he sees decarbonizing fertilizer as increasingly urgent. There is nothing here that affects your house, your utility bills, or any rebate program. It is a look at how one company is trying to clean up a different part of the economy, agriculture, rather than home heating, cooling, or insulation.
Kia reveals another low-cost EV that we’ll sadly never get to see
This news is about a car launch overseas, not a home energy program, but here's the gist for anyone curious. Kia just unveiled a new low-cost electric SUV called the Syros, sold only in India. It comes with two battery options and a driving range of up to 326 miles, plus fast charging from 10% to 80% in 39 minutes. Pre-orders opened this week, with a price expected around $19,200 once it goes on sale later this month. None of this applies directly to US homeowners thinking about home upgrades, since the Syros won't be sold in the United States. Kia's US lineup currently includes the EV6, Niro EV, and EV9, and the Niro EV is being phased out. Its replacement, the EV3, is expected to arrive in the US later this year with a starting price under $35,000 and a range estimated at up to 320 miles, making it one of the more affordable electric vehicles available domestically. If you're weighing whether an EV purchase might pair with home upgrades, like installing a home charger alongside things such as insulation or a heat pump for heating and cooling, the EV3's expected arrival later this year could be worth watching. But specifics on price, charging equipment, or any related incentives for US buyers were not part of this announcement.
Exclusive two-day-only 58% savings on EcoFlow and Jackery power stations from $95, Aiper HydroComm 5-in-1 pool monitor, more
A two-day sale is offering discounts on portable power stations and other home gear, tied to a retailer's anniversary event plus an extra sitewide discount code. Portable power stations are battery packs that store electricity and can run appliances during an outage or supply power away from the grid — some homeowners use them as a backup alongside or instead of a home battery system. Several EcoFlow power stations are discounted, including the 4,096Wh DELTA Pro 3 model, priced at $2,261 — the lowest that price has been since April. There's also a wide range of Jackery deals, including the newer HomePower 2000 Plus V2 model, though that one is actually priced a bit higher than it was during a recent Prime Day sale, so it's worth comparing before buying. Outside of power stations, the sale includes a discount on Aiper's HydroComm pool monitor bundle, a device that tracks pool conditions, and a price cut on an EGO 56-volt cordless string trimmer, back to its lowest price on Amazon. Leftover deals from previous days are also still available, including a discount on a Segway e-bike. None of this is tied to any rebate or efficiency program — it's simply a limited-time retail sale on backup power and outdoor equipment. If you've been considering a portable power station for outages or off-grid backup, this is a chance to compare current prices, but the discounts run out after two days.
Solar Power Records Set in Spain, France, Germany, and Italy
Solar power hit new highs across Europe in the first half of 2026. Spain, France, Germany, and Italy all set all-time records for solar production over a six-month period, with Spain and France seeing the biggest jumps, both up 16% from the year before. Wind power grew too, with Italy leading at 17% and France, Italy, and Portugal setting their own wind records. Even with all this clean power coming online, electricity prices went up in most of Europe. The cause was higher gas prices and higher demand, not the solar and wind growth. Oil and gas prices hit their highest levels since 2023, driven partly by tensions between the United States and Iran and low gas storage. Italy had the highest average electricity price in the first half of the year, followed by the United Kingdom. Spain and Portugal were the exceptions: both saw prices fall, thanks to their strong solar and wind gains. None of this changes anything about home energy programs or rebates in the United States. It is a look at how European power markets are shifting as solar and wind take a bigger share of the grid, and a reminder that more clean power on the grid tends to push prices down, while gas price spikes push them up. If you already have solar panels or are thinking about them, this is a sign of where the technology and the market are headed more broadly, though the prices and programs that affect your own home will depend on what is happening locally.
They wanted to hold Exxon accountable. Then they got hacked.
This story is outside what Retrofit Relay covers. It concerns a legal and cybersecurity case tied to Exxon Mobil, not home energy upgrades, rebates, or efficiency programs, so there is nothing here that touches your house or your energy bills. In brief: starting in 2016, climate activists working on the #ExxonKnew campaign, which aimed to hold Exxon accountable for what it knew about climate change, were targeted by a wave of phishing emails. Some had their accounts hacked, and stolen material later showed up in press reports and in Exxon's own court filings against state investigations. A hack-for-hire group called Dark Basin, based in India, was eventually identified as the source, and an Israeli private investigator, Aviram Azari, pleaded guilty to running the scheme. Now, newly unsealed court documents in the case of another Israeli investigator, Amit Forlit, allege the hacking was ordered by DCI Group, a lobbying firm that worked for Exxon, on behalf of a client described as an oil company headquartered in Irving, Texas, where Exxon was based at the time. Exxon and DCI Group both deny involvement. Forlit has pleaded not guilty. None of this affects home energy programs, incentives, or upgrade planning, so there is no action for homeowners to take based on it.
Xpanner sets up excavator-based solar panel installation
A company called Xpanner has released a new tool that turns a standard excavator into an automated solar panel installer. The system, called the X1 Panel Lift, picks up solar panels, positions them, and helps install them, all controlled by one operator through a simple interface. It builds on an earlier version of the same technology that automated pile driving, the process of setting the posts that support solar panels, for large solar projects. This news applies to big utility-scale solar farms, not home rooftop installations. The equipment is aimed at contractors building large-scale solar arrays who want to speed up repetitive work and rely on smaller crews. It is offered through a subscription that includes the equipment, software, and support, rather than requiring companies to buy new machinery outright. For a homeowner, this doesn't change anything about installing panels on your own house. Home solar installs are done by hand on a much smaller scale and don't involve heavy machinery like excavators. The practical effect of technology like this, if it lowers labor costs and speeds up construction on large solar farms, could eventually show up in cheaper electricity from utility-scale solar or faster buildout of local solar projects. But it has no bearing on rooftop solar costs, rebates, or installation timelines for individual houses.
World Premiere of the All-New Electric ID. Cross: Premium Class in Compact Format
This one is about a new car, not a home upgrade, but it may interest anyone weighing an electric vehicle alongside home energy plans. Volkswagen has unveiled the ID. Cross, a compact all-electric SUV, with a starting price around 27,995 euros. It comes with battery options of 37 kWh or 52 kWh and can travel up to 427 kilometers on a full charge, based on the WLTP testing standard used in Europe. Fast charging from 10 to 80 percent takes about 23 to 24 minutes at a public DC fast charger. For anyone thinking about home charging, the ID. Cross can draw up to 11 kW from a home wall box or public AC charger. It also has vehicle-to-load capability, meaning it can power other devices, such as an e-bike charger, at up to 3.6 kW through its charging port. That kind of two-way power feature is worth knowing about if you're considering an EV that could also serve as backup power for small devices. Advance sales start now in Germany, with higher trim levels (Life and Style, 155 kW motor, 52 kWh battery) available first at prices from 36,525 euros. The base Trend version, with a smaller battery and motor, will follow later starting at the lower listed price. There's no mention of availability or pricing in the US, so homeowners here will need to watch for further announcements if they want this model for their own driveway.
How EU’s Tariffs on EVs Produced in China Affected Different Brands
This is a car market story, not a home energy story, but here's the gist. The European Union puts tariffs on electric vehicles made in China, and a new analysis looked at how that's played out for different brands. The results were mixed. BYD and Geely kept growing their sales in Europe despite the tariffs, while SAIC and Tesla saw sales drop. Part of the reason: BYD faces a lower tariff rate (17%) than SAIC (35%), which helps explain why one grew and the other shrank. Tesla's decline seems tied to other factors too, including weaker demand in Europe and the fact that it now builds cars at its Berlin factory instead of importing them from China. Even with the tariffs, China-made EVs still account for a notable share of EV sales in Europe, though that share has slipped from 22% in 2024 to 17% now, even as the actual number of vehicles sold stayed about the same. Chinese automakers overall are exporting more, partly to make use of factory capacity, with Europe as one of their biggest markets outside Asia. For a homeowner, this doesn't change anything about home energy upgrades or rebates. If you're weighing an EV purchase down the road, it's a reminder that pricing and availability for Chinese-made models in Europe are shifting under these tariffs, and that different brands are being affected in very different ways. It's a market-watching story, not one with direct steps to take for your house.
Cadillac OPTIQ May Switch To A Chinese Made Platform
This is a car story, not a home energy one, but here's the gist. Cadillac's electric OPTIQ SUV may switch to a new underlying design called the Xiao Yao platform, built by GM's joint venture with Chinese partner SAIC in Shanghai. Reports say this next-generation platform could bring faster charging and more advanced batteries than the current version. GM has called the reporting "speculative" but confirmed the platform itself is real and already used in some Buick models sold in China. The catch is that this updated OPTIQ likely won't come to the United States. It's aimed at markets like Europe, and possibly Canada, Mexico, and Australia, where rules on Chinese-linked vehicle technology are less restrictive. The OPTIQ is currently built in Mexico, so a shift to this platform wouldn't change where the US version comes from, since the news is about future overseas models, not the ones sold here now. For homeowners, there's no direct impact. This doesn't change EV tax credits, charging equipment, or anything tied to home energy upgrades. It's a signal that automakers, including GM, are increasingly relying on technology developed in China to stay competitive on batteries and charging speed, even as US buyers remain shut out of many of those newer models. If you're watching the EV market because you're thinking about a future purchase or a home charger, it's simply a reminder that the vehicles sold in the US may keep lagging behind versions available elsewhere.
500 kW Floating Offshore Solar Farm Arrives in Valencia
Spain has installed its first floating solar platform, a 500 kW unit that just arrived at the Port of Valencia. Built by the company BlueNewables at a shipyard in Vigo, Galicia, the platform is named Paiporta after a Valencian town hit by 2024 flooding. It will operate outside the port's southern breakwater as a test project run with the Spanish energy company Naturgy. This is one piece of a larger plan launched in March 2025 that includes two of these floating platforms, together capable of producing 1 megawatt of power. The pair is expected to generate about 1,500 megawatt-hours of electricity a year. Each unit is roughly 64 by 41 meters and holds 600 solar panels, designed to be built quickly using standardized, factory-style manufacturing so the technology can eventually scale up. The developers say the design is meant to hold up in open-sea conditions, with the longer-term goal of deploying it well beyond Spanish waters. This is a pilot project at a commercial port, not a residential technology, so it has no direct bearing on home solar or rooftop systems. It is worth watching mainly as an early sign of how floating solar might mature as an option for generating renewable power offshore. There is no information yet on how its costs compare to other floating solar systems already in use elsewhere.