While I agree with underestimating capacity, the problem only really applies to off grid.

For regular homes, it just means less savings.

It means some other infrastructure (fossil fuels?) needs to take up the slack, and people underestimate actual costs at larger scales.

It’s the big issue in Germany for instance - it’s all fun and games until Winter.

	▲	uecker 12 minutes ago \| parent \| next [-]
		Germany has more wind in winter, so traditionally has more production of renewables in winter months.
	▲	turtlebits 3 hours ago \| parent \| prev \| next [-]
		Which is fine, since you're still reducing your reliance on the grid. However, when you're off grid, underestimating capacity means your SOL and need to buy a generator and burn fuel on-site.
	▲	pixl97 3 hours ago \| parent \| prev [-]
		And? Any coal not used in summer is coal not dug up.