That's for 5000 people. And only covers heat. Happy if it can scale and move from prototype to long-term deployment at a reasonable cost, serving heavy industry in manufacturing.
reply> That's for 5000 people.
replyAnd it's quite compact.
> And only covers heat.
Is that not useful?
Don't get me wrong, this is cool. We just have some stricter requirements on a country/state/union level that while this might help with parts, I don't see how it can easily scale up and generalize
replyThey are buying electricity and storing it as heat and time-arbitrage it to when the heat is needed, they make no mention of the electric power source. In any case, during the depth of winter, when it's needed most, they're still burning carbon. Previous paragraph to your quote:
reply>During the coldest, most expensive stretch, the wood chip boiler became the primary unit, and the sand battery supplemented it.
Remarkably: heat is pointed to as "wasted energy" when doing EROEI analysis and discounted, this is done to strengthen the case for Solar vs Gas.
Finland's energy mix is ~6% solar [1]... maybe it's not a larger portion of the grid supply because Finns realize it doesn't work in the winter?
going from burning fuel 12 months of the year to 3 is still a 75% cut in fuel costs and emissions
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