That hydro is regularly turned off when it gets too cold.

Really? How do they turn it off? Where can I read about it?

I often pass the hydro bridge, so we have winters and whatnot - I didn't know they turn them off.

I can see hydro pumping power for all year long and being the top source of electricity in Latvia: https://www.ast.lv/en/electricity-market-review?year=2025&mo...