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World's largest sodium-ion battery goes into operation - Energy Storage
(www.ess-news.com)
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this post was submitted on 02 Jul 2024
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So an average Chinese home takes ~1MWh/mo of electricity, they have 100Mwh and they say 300 discharges a year and support 12000 people. So they expect this to cover about a fifth of the energy usage, which seems pretty great.
Where do you take that number from? 1MWh/mo seems quite high. Also considering that the stored energy will only be used when solar or wind are low, the battery will never be used to supply 100% of the electricity.
So it will support many more homes.
Um, why does the average Chinese home consume 1 MWh/mo? Or do they mean the battery capacity would account for one home consuming up to 1 MWh?
I got it from here
Ok so as a indicative figure, my air-conditioned three bedroom home in Australia uses about 20kWh a day in the hottest part of the year, which multiplies out to about 0.6 MWh a month.
I wouldn't expect the average Chinese home to use more than that, because that's getting on the higher end of average usage in Australia and our homes are full of energy gobbling gadgets.
Yeah that's about what I had figured too, 400-600 kWh/mo per house during summer. Double that is more likely to be estimated capacity rather than actual use.
I mean maybe, it's just a back of napkin calculation i didnt spend more than a 5s search, think of it as a lower bound I guess. I don't think my conclusion really changes if it's 40% vs 20%, point is that it's more than enough to power peak usage. I tried digging a bit more but couldn't find anything that contradicted or confirmed it. Here in Canada 1MWh per month is typical for an electrified house (ie electric heating, cooling and stovetop), but our houses are big, our electricity generally cheap and our climate different.
Wikipedia lists avg consumption per capita for China as 5MWh/person/yr, half that of the US, Canada and Australia but that doesn't take into account household size which imagine is higher in china. Also worth noting China has been adopting evs relatively quick and they generally take a huge amount of power.