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MIT researchers propose subsea version of pumped hydro for renewable energy storage

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Researchers at MIT are proposing using a variation on pumped hydroelectric systems for storage of electricity produced by offshore wind farms. The key to this Ocean Renewable Energy Storage (ORES) system is the placement of 30-meter-diameter hollow concrete spheres on the seafloor under the wind turbines.

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New lithium polysulfide flow battery for large-scale energy storage

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Researchers from the US Department of Energy’s (DOE) SLAC National Accelerator Laboratory and Stanford University have designed a new lithium/polysulfide (Li/PS) semi-liquid (flow) battery for large-scale energy storage, with lithium polysulfide (Li 2 S 8 ) in ether solvent as a catholyte and metallic lithium as an anode.

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Hydrogenics wins order from E.ON for power-to-hydrogen-gas energy storage project in Germany

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The 2 MW energy storage facility, to be located in Falkenhagen in northeast Germany, will use surplus renewable energy sources to produce hydrogen for storage in the country’s existing natural gas pipeline network. When compared to current utility-scale solutions, Power-to-Gas offers unmatched energy storage capacities.

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Stanford study quantifies energetic costs of grid-scale energy storage over time; current batteries the worst performers; the need to improve cycle life by 3-10x

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A plot of ESOI for 7 potential grid-scale energy storage technologies. Benson from Stanford University and Stanford’s Global Climate and Energy Project (GCEP) has quantified the energetic costs of 7 different grid-scale energy storage technologies over time. Credit: Barnhart and Benson, 2013. Click to enlarge.

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MITEI study finds hydrogen-generated electricity is a cost-competitive candidate for backing up wind and solar

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A team at MITEI (MIT Energy Initiative) has found that hydrogen-generated electricity can be a cost-competitive option for backing up wind and solar. California draws more than 20% of its electricity from solar and approximately 7% from wind, with more VRE coming online rapidly. —Drake Hernandez. 2021.117314.

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DOE Awarding $620M for Smart Grid Demonstration and Energy Storage Projects

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The US Department of Energy is awarding $620 million for projects around the country to demonstrate advanced Smart Grid technologies and integrated systems. The selected projects include advanced battery systems (including flow batteries), flywheels, and compressed air energy systems. Los Angeles Department of Water and Power.

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Axion Power’s PbC PowerCube battery energy storage system integrated into PJM utility grid

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the developer of advanced lead­carbon PbC batteries and energy storage systems ( earlier post ), announced that its PowerCube battery energy storage and battery system is being integrated as a power resource for the PJM Regulation Market, which serves 58 million people in all or parts of 13 states and the District of Columbia.