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Michelle Lewis

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Michelle Lewis is a writer at Electrek. She has previously worked for Fast Company, The Guardian, News Deeply, Time, and others. She lives in Massachusetts.

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‘World’s largest’ industrial heat battery is online and solar-powered

World's largest industrial heat battery

Rondo Energy has begun commercial operations of what it says is the world’s largest industrial heat battery – a 100 MWh system now operating at a Holmes Western Oil facility in California. Powered entirely by an onsite solar array, the system supplies constant high-pressure steam and heat to the plant, demonstrating how renewable energy can directly power heavy industry.

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This Maryland county will get its power from a solar farm on landfill

US electricity demand solar 2025

Baltimore County, Maryland, just brought its first large-scale ground-mounted solar farm online, and it sits on what used to be the Parkton Landfill. The 213-acre site, once a symbol of waste, is now generating clean power that will cut costs, slash emissions, and turn an underused piece of land into a long-term energy asset.

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This clever system taps basement temps to cool your home, and now it can heat, too

Cool Down

New York-based Cool Down makes a thermal transfer system that moves naturally cool air from your basement into your living space while sending excess heat back down below to cool homes more efficiently. By dispersing that heat into the ground, Cool Down helps keep homes comfortable during hot summer months and cuts electricity bills in the process.

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InstaVolt is using GPS tracking to catch thieves stealing its EV charging cables

InstaVolt GPS

A surge in EV charging cable thefts is putting the reliability of the UK’s charging network at risk and undermining trust among drivers. InstaVolt is the UK’s largest network of fast chargers, and over the past two years, nearly 1,000 of its charging stations (it has over 2,100, so nearly 50%) have been targeted by cable thieves. But now InstaVolt is fighting back with GPS tracking.

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In a first, renewables generate more power than coal globally

renewables coal solar US

Solar and wind power aren’t just keeping up with global electricity demand anymore – they’re pulling ahead. According to a new analysis from energy think tank Ember, solar and wind combined outpaced global electricity demand growth in the first half of 2025. That shift led to a drop in both coal and gas generation compared to the same period last year. For the first time ever, renewables generated more power than coal globally.

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The era of cheap Chinese solar + storage is ending – here’s why

Trinasolar Chinese solar storage

Solar and storage prices are about to rise after a year and a half of record lows, according to new data from Wood Mackenzie. Equipment procurement costs for solar and energy storage will jump around 9% starting in Q4 2025, marking the end of the bargain pricing developers have enjoyed for the last 18 months. That’s because China is changing the rules.

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FERC: Solar + wind made up 90% of new US power generating capacity to July 2025

FERC July 2025

Solar and wind accounted for 90% of new US electrical generating capacity added in the first seven months of 2025, according to data just released by the Federal Energy Regulatory Commission (FERC). In July, solar alone provided 96% of new capacity, making it the 23rd consecutive month solar has held the lead among all energy sources.

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