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United States

Aluminum-nickel molten salt battery for seasonal renewables storage

US scientists have developed a battery that can retain 92% of its initial capacity over periods of 12 weeks, with a theoretical energy density of 260 W/hour per kg. It was built with an aluminum anode and a nickel cathode, immersed in molten-salt electrolyte.

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UC Berkeley digs big hole for geothermal heat pump

The University of California, Berkeley, has replaced a cogeneration plant with a new geothermal system that is powered by renewable energy.

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Enphase to produce micro-inverters in Romania

US energy specialist Enphase will produce micro-inverters at a Flextronics factory in Timisoara, Romania, from the first quarter of 2023.

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Tesla falls from top of US residential solar installer rankings

In Wood Mackenzie’s solar installer Leaderboard, Freedom Forever overtakes Tesla in the top three spot for the first time.

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SunPower in late-stage discussions with First Solar to produce solar modules with tandem technology

In SunPower’s analyst day presentation, company executives announced that it is working with First Solar to develop a new type of residential solar module that pairs thin film with traditional silicon.

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SolarJuice Technology launches 450W, 550W modules for commercial PV

SolarJuice Technology manufactures its new 450W and 550W solar modules in a facility at a revamped Sunergy PV solar plant in Sacramento, California.

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Enphase launches pilot discounts for PV customers for leasing batteries, sharing energy

Homeowners who participate in a new Enphase pilot project will connect their home batteries to the US grid, sharing energy through Green Mountain Power’s distribution system in exchange for financial incentives.

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Solar starts strong in the US, growing 40% year over year in January

US solar generation reached new heights despite a year of challenges. Plus, pv magazine discusses “renewable” vs. “sustainable.”

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US government to move forward with PV anti-circumvention investigation

The announcement of a new anti-circumvention investigation brings the US solar industry closer to what has been described as a worst-case scenario for companies that account for 80% of the country’s solar cell imports, with no domestic manufacturing capacity to alleviate the pressure.

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SunPower launches whole-home backup solution

The US manufacturer has expanded the battery capacity options for its SunVault Storage product, up to 26 kWh and 52 kWh configurations.

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