Comment by crishoj
1 day ago
It's a heat battery for district heating. Could be other sources than electricity, e.g. municipal garbage incineration plant.
1 day ago
It's a heat battery for district heating. Could be other sources than electricity, e.g. municipal garbage incineration plant.
There's water based heat batteries (aka thermal storage caverns) that are supplied with district heat in use in other places, but this is not one of them. The article says "Polar Night Energy’s technology works by heating a sand or a similar solid material using electricity"
No, these generally use excess power during the night and windy days to store heat.
There's not that much CHP production that there'd be excess, plus they can adjust those plants well enough that there's no unnecessary burning going on.