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#energystorage

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The new #Peregrine #EnergyStorage Project clocks in at 200 megawatts (MW)/400 megawatt-hours (MWh), making it one of the biggest battery storage facilities in the #SanDiego region. That’s enough stored energy to power around 200,000 homes for two hours during peak demand.
Built for $300 million, Peregrine is the fifth utility-scale energy storage project #Arevon has launched in #California.
electrek.co/2025/06/25/this-ne

Electrek · This new San Diego battery can power 200,000 homes during peak hoursAv Michelle Lewis

Yeah... That went well: ourobengr.com/2025/08/yeah-tha - The latest in my long series of posts about our 5.94kW solar array with Redflow ZCell battery and Victron Energy inverter/charger system, wherein our battery that replaced the first one under warranty itself failed for the same reason. Happily we were able to get it replaced again, but not through Redflow who no longer exist. I've also included some speculation about why these batteries fail, and some possible mitigation strategies in case other folks with ZCells are still running and want to stay that way.

I finally got round to taking this LG Chem #RESU10H battery apart. These are the 6 cell packs, originally all in series for 155vdc. I will be restringing them as 2s3p for a 48vdc nominal pack, and implementing a new active balancing BMS.

The battery disabled itself, throwing an error code with #30, which indicates the cell with an issue. Sure enough, the one pack's voltage with cell #30 is about 0.4v lower than the rest. Since these are NMC, absolute care must be taken in any resolution.

Friday, July 11, 2025

What Russian bombardment feels like in Kyiv — Ukraine, UK pen deal for Thales air defense missile supply — The day I first heard a Shahed drone buzzing overhead –Ukraine’s largest battery energy storage project enters final testing phase, set to power 600,000 homes … and more

activitypub.writeworks.uk/2025