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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. A new study by Charles J.

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PNNL study outlines requirements for grid storage, reviews four electrochemical energy storage systems: vanadium redox flow, Na-beta, Li-ion and lead-carbon

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The future grid will face significant challenges by providing clean power from intermittent resources to a much more dynamic load. EES has been considered as a key enabler of the smart grid or future grid, which is expected to integrate a significant amount of renewable energy resources while providing fuel (i.e.,

Li-ion 231
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Duke Energy upgrading Notrees 36 MW grid storage system with Samsung SDI Li-ion batteries

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The system, one of the US’ largest, has been operating since 2012 with lead acid batteries. Duke Energy, the nation’s largest electric utility, currently owns nearly 15% of the grid-connected, battery-based energy storage capacity in the US, according to independent research firm IHS Energy.

Grid 150
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Axion Power’s PbC PowerCube battery energy storage system integrated into PJM utility grid

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The PbC battery is a hybrid device that uses the standard lead acid battery positive electrode and a supercapacitor negative electrode that is made of activated carbon. The very high surface area activated carbon electrode stores the protons (H + ) from the acid in a layer on the surface of the electrode.

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Ecoult awarded largest battery-based renewable energy storage project in Australia; 1.6 MWh UltraBattery system

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The UltraBattery combines the advantages of advanced lead-acid battery technology with the advantages of an asymmetric capacitor, enabling an optimal balance of an energy-storing lead-acid battery with the quick charge acceptance, power discharge, and longevity of a capacitor. UltraBattery concept.

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Axion supplying PbC batteries to Norfolk Southern for all-battery switcher and working on line-haul hybrid locomotives; micro-hybrid and stationary expansion

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PbC batteries are multi-celled asymmetrically supercapacitive lead-acid-carbon hybrid batteries. Like a lead-acid battery, it comprises a series of cells. NS originally built NS-999 in early 2009 with leadacid batteries; however, the leadacid system consistently failed field testing.

Lead Acid 225
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US Subsidiary of GS Yuasa introduces energy storage systems for renewables and EV charging

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Equipped with 48 volts of ECO R advanced lead acid battery technology, the integrated, compact unit is targeted at common renewable energy storage needs and is packaged in an easily installed, indoor/outdoor cabinet. Rated NEMA 3R, the cabinet is built of outdoor grade aluminum and has a green power coat finish.