That massive spike of 50c/kWh at the left looks tiny compared to today even though that's already insanely expensive

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[–] 3 points 2 years ago* (2 children)

What about a solar + electric heating?

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  • [–] 22 points 2 years ago* (1 child)

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

    Also heat pumps are always at least as efficient as straight electric heating.

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  • [–] 1 point 2 years 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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  • [–] 13 points 2 years ago* (last edited 2 years ago) (1 child)

    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 unless you added geothermal to the mix like a geothermal heatpump which is also very expensive. Betweem the gear, battery, geothermal, all installed your probably in the 80k$ range or more. A wood stove would be the best bet

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  • [–] 3 points 2 years ago (1 child)

    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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  • [–] 2 points 2 years 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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