this post was submitted on 19 Sep 2025
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China connects its largest battery-supercapacitor hybrid storage plant - Energy Storage (www.ess-news.com)
submitted 1 month ago by schizoidman@lemmy.zip to c/technology@lemmy.world
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China has connected to the grid a 100 MW hybrid energy storage facility that integrates supercapacitors and lithium-ion batteries

Touted as the world’s largest supercapacitor-based installation, the facility combines a 58 MW/30-second supercapacitor array with 42 MW/42 MWh of lithium-ion battery storage, spanning a footprint of approximately 16,800 square meters.

Supercapacitors provide ultrafast response times – specified at 0.001 seconds – and maintain over 85% capacity at –40°C, significantly outperforming lithium-ion batteries in extreme cold. By offloading rapid-response tasks to the supercapacitor, the system is expected to extend battery lifespan and reduce lifecycle costs by around 30%

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[–] wiegell 2 points 1 month ago (1 children)

I’m curious, do you know how much you use for heating, cooling and the EV? I supposed those are the big differences to my household.

[–] RvTV95XBeo@sh.itjust.works 4 points 1 month ago (1 children)

30-50% of my energy is the EV. About 20% is 120V plug loads (computers, fridges, home server), ~5-10% lighting, ~15% large equipment (dryer, electric range, electric water heater), and the remainder (15-30% seasonally) is HVAC (heat pump)

Any gas appliances would bring a lot of those numbers down

[–] wiegell 3 points 1 month ago

Thank you for the details. We have district heating here and no EV, that makes a big difference! We use about 15MWh of district heating each year but less than 2MWh of electricity. Our house is from the 70s, but have decent insulation, could be better though