California

Tandem PV has opened a 40 MW commercial demonstration factory in Fremont, California, marking a significant transition for perovskite-silicon technology from laboratory development to repeatable manufacturing at scale.

California is putting the sun to work on the heavy lift that keeps California hydrated.

A proposed decision by the California Public Utilities Commission (CPUC) has drawn criticism from industry groups, who say it fails to support a viable market for community solar.

California appellate court has affirmed the Public Utilities Commission decision to sharply cut compensation for homeowners and businesses that export rooftop solar electricity production to the grid.

HydrogenPro says its 220 MW ACES Delta project in Utah is nearing completion, with all electrolyzers operating at full load, while the hub will store hydrogen in salt caverns with energy capacity two to three times that of all US grid-connected batteries combined.

U.S. researchers are testing regenerative agrivoltaics at a farm in Southern California, combining solar panels with soil-restoring practices like composting, cover cropping, and no-till farming to enhance crop yields, soil health, and water-use efficiency. The pilot evaluates technical, ecological, and economic viability while exploring how this land-sharing approach can optimize food and energy production, reduce irrigation needs, and inform larger-scale deployment and policy frameworks.

On Feb. 1, California’s batteries bridged the solar gap with seamless precision. After discharging through the night until sunrise, they spent the daylight hours charging, then pivoted back to exporting power well past midnight – effectively sustaining the state on solar energy for a full 24-hour cycle.

The US company said its Power Control software is designed to help installers reduce costs and streamline interconnection. Among its features is the ability to control aggregate system exports through software-based limits.

Octopus Energy will acquire a solar and storage project in California that is expected to be operational by July as part of its investment. The UK-based company, active across major markets in Europe, Australia, China and the United States, says California’s clean technology sector will “bring innovation, growth and returns to the UK.”

Hydrostor has secured a 50 MW/400 MWh offtake agreement with California Community Power (CC Power) for its Willow Rock Energy Storage Center, providing firm capacity to six of CC Power’s community choice aggregator members.