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Batteries on the move: Gridstor buys 796 MWh Birdseye BESS, Hull Street to buy FirstLight’s 1.4 GW portfolio Money is coming for energy storage projects both operational, and planned, across both battery energy storage systems (BESS) and pumped storage.
Tristan Rayner
May 21, 2026
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California Senate passes plug-in solar bill, with provisions for battery storage The Plug and Play Solar Act would allow portable solar generation devices with up to 1,200 watts of output to connect to a building through a standard outlet. The bill now moves to the state Assembly, which has until August 31 to pass it during the current session.
Ben Zientara
May 21, 2026
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Brazil increases import tax on batteries at local manufacturer’s request The measure raises the import tariff from 18% to 25% for 48V LFP batteries intended for stationary applications in telecommunications and photovoltaic systems of up to 4.8 kW until May 2027, following a request from the domestic industry via LETEC. For other batteries classified as lithium-ion electric accumulators, the reduced rate of 18% remains.
Lívia Neves
May 21, 2026
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Antora’s hot carbon thermal batteries win 5 GWh energy storage project in US Grok Ventures has provided project-level financing as the sole external investor on a US-based 5 GWh thermal energy storage system providing 50 MW of round-the-clock energy through an offtake agreement with biofuels giant, POET.
Tristan Rayner
May 21, 2026
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Australia’s busy BESS scene: Financial close on 2.4 GWh, OX2 starts 200 MWh build, more Deals, builds, and financial closes are just part of the busy Australian big battery scene.
David Carroll, Tristan Rayner
May 20, 2026
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Grid-forming tech on center stage as search for system resilience steps up Maintaining grid stability becomes more challenging as the share of intermittent renewables grows in the electricity generation mix, but system resilience is essential to continued solar deployment. Grid-forming inverters offer a solution, and their capabilities are increasingly being tested and relied upon in key energy markets globally.
Matthew Lynas
May 20, 2026
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akaysha Orana-render
Copenhagen Energy and Akaysha Energy plan 2 GWh storage system in Germany The large-scale battery with a capacity of 500 MW is to be built near the extra-high voltage infrastructure and an existing substation in the town of Bühl in Germany, near Baden-Baden. have formed a joint venture to develop large-scale battery storage systems in Germany.
Ralph Diermann
May 20, 2026
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MN8 Energy brings 400 MWh tolled standalone battery online in Southern California MN8 Energy has made clear it is the owner of the Pome BESS in California, with the tolled asset now in commercial operation
Tristan Rayner
May 20, 2026
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Grenergy locks in 20-year Georgia Power 400 GWh 100% PPA for its Beaver Creek hybrid project The Beaver Creek project combines 229 MW of solar with 183 MWh of battery storage, and is now completely contracted.
Tristan Rayner
May 20, 2026
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