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Or geothermal or hydro standing in for nuclear where geographically permissible (an expanding target for geo and a nearly maxed one for hydro in many places).

Also implies a very steep build out of nuclear for this to work tbh. Or literally massive interties so the renewables can cover each other.

OTOH, there’s tons of stuff that we don’t do because electricity costs are too high and we could just do those in the summer. Desalination is the most obvious one, but you could pass other regulations forcing things to be seasonal.

there are some schemes that might help with seasonal storage - www.rondo.com/how-it-works...

How It Works - Rondo EnergyLow-cost, zero-emission industrial heat and power. The Rondo Heat Battery uses electric heating elements, like those in a toaster or oven, to turn power when it’s available into high-temperature heat.www.rondo.com

The Terraform Industries model of using solar to power carbon capture -> synthetic fuel production is another process that could be used as a seasonal power sink. Obviously less effective than deploying in lower latitude locations, but that’s true of anything with a solar component.

Having talked with people in Alberta who rely on only heat pumps, -30C isn't that big a deal for modern heat pumps in houses with good insulation. IIRC the pumps still work, but your house might be slightly cooler, but not freezing. -30C days are also getting rare, maybe 1-2 days a winter

drill baby, drill.