October 12, 20223 yr I find reportage on energy matters very inconsistent, and a large part of this is the way that definitions and numbers get bandied about. So let's look at the Hornsdale Power Reserve in Australia. This has two ratings 150 MW 193.5 MWh As I set it (and I could be wrong) this means that the battery can STORE 193.5 MWh, and can consistently discharge 150 MW. IE if it discharges consistently at maximum, it will last 1.29 hours. Assuming that it doesn't shut itself down before DOD = 100%. Do I undersand the figures correctly? I recently read an article in which the HPR was described as a "total failure for storing grid electricity". This may be playing games with words, or telling truth but not the whole truth. This is why I am trying to get up to speed with measurements and terminology, because the guys who write these articles either don't really understand the topic, or are playing games with numbers & definitions. What is "grid electricity" that the HPR can't store? 230V AC? Well of course it can't store THAT. But it can store DC power which is then inverted and fed into the grid. Edited October 12, 20223 yr by Bobster. grammar
October 12, 20223 yr 13 minutes ago, Bobster. said: I recently read an article in which the HPR was described as a "total failure for storing grid electricity". The one that paid for itself in 2.5 years? Seems like it's a pretty good business... https://www.torquenews.com/video/tesla-big-battery-australia-pays-itself-25-years-huge-profit
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