Comment on Price of electricity in Finland peaks at 2.35€/kWh today. Keeping my tiny granny cottage warm costs me over 50 euros for a single day. It's negative 25C (77F) outside.

• Linssiili@sopuli.xyz ⁨9⁩ ⁨months⁩ ago

  Well, here (in middle of finland) the sun set at 14:30, so there wasn’t all that much solar energy available

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  • nilloc@discuss.tchncs.de ⁨9⁩ ⁨months⁩ ago

    It think above -20C or so, cold weather heat pumps are still way more efficient than resistive electric heating.

    Good R-factor insulation is probably the most important upgrade in OP’s case. There are people where I live in the Northeast who heat their homes almost exclusively with the waste heat from cooking, electronics or old incandescent lighting. They have like R-30+ homes and really neat ventilation designs for cooling in the summer too.

    I had plans to build a tiny home with Vacuum insulated panels and a small marine stove for heat, until we had a child and plans changed.

    Now I’m looking at a solar battery setup with geothermal heat pump that will probably cost nearly what the whole tiny home was gonna be.

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• DanglingFury@lemmy.world ⁨9⁩ ⁨months⁩ ago

  Solar is quite poor in Northern winters. Wind + solar + heat would be a better bet, but the battery required to heat your house for more than a day with low winds would be prohibitively expensive. A wood stove would be the best bet

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  • 018118055@sopuli.xyz ⁨9⁩ ⁨months⁩ ago

    Finland has about 5.2GW of wind capacity vs 4.3 nuclear. If it’s a windy day the spot price will usually be low.

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    • DanglingFury@lemmy.world ⁨9⁩ ⁨months⁩ ago

      Good point, for aome reason i was thinking more off-grid than load balancing economics. The battery would probably help lower power by filling when power is cheap and supplying when the rates spike throughout the day

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