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Published: 17 May 2021, 14:35 By: Two Tesla Powerwalls Green Mountain Power, a utility company in Vermont, has begun using Tesla Powerwall energy storage systems in customers’ homes as a frequency regulation resource to benefit the regional grid. The company, which serves about 266,000 customers in the northeastern US state, was actually the first utility in the country to sell Tesla’s Powerwall residential systems after they were launched in 2015. As part of that offering, Green Mountain Power offered the chance to get a Powerwall at a discounted price or through a no-money...

Published: 13 May 2021, 08:35 By: Andy Colthorpe Enapter's AEM Multicore design which stacks together 440 of the company's modular electrolyser units. Image: Enapter. Australian flow battery energy storage company Redflow has entered a “high voltage, high capacity grid-scale future,” unveiling a new system it has created to be deployed at a 2MWh project in California. Redflow makes redox flow batteries based on a zinc-bromine electrolyte chemistry which are intended to be durable with long lifetimes and capable of performing many cycles without degradation. With the batterie...

Published: 13 May 2021, 07:30 By: Andy Colthorpe Detail of Enel's 497MW Roadrunner solar farm in Texas, operational since December 2019, where a battery storage system will be retrofitted. Image: Enel Green Power Americas. Construction has begun on more than a gigawatt of large-scale renewable energy projects with battery storage attached in Texas, by Enel Green Power North America, the regional renewable and clean energy arm of European utility Enel. The parent company said earlier this month that it has begun building out two solar-plus-storage facilities and one wind-plus-stor...

Published: 13 May 2021, 13:44 By: Andy Colthorpe A 100MW, four-hour lithium battery storage resource came online at Alamitos, the site of a natural gas plant in California, to deal with peak demand management, at the beginning of this year. Image: AES. A rapid and significant increase in battery storage capacity will be among factors contributing to an improved energy security position for California’s electricity networks this summer, but the grid is still vulnerable to stress during any extreme heatwaves. The California Independent System Operator (CAISO), which operates th...

Published: 12 May 2021, 08:36 By: Mitsubishi Power's M501JAC hydrogen-enabled gas turbine. Image: Mitsubishi Power. A massive “green hydrogen hub” adjacent to a coal power plant in Utah could get over half a billion dollars in US government loans to support its development. Targeting the use of renewable energy-generated hydrogen as very long-duration or seasonal energy storage, the Advanced Clean Energy Storage Project would pair more than 1,000MW of hydrogen electrolysers with giant salt caverns that could each store more than 150GWh of dispatchable energy capacity meaning...