alt Hacker News> Even in Texas/California photovoltaic output in the winter is measly, anywhere more to the north and it's effectively inexistent.
The northernmost point in Texas would be at the extreme southern edge of Europe. The northernmost point of California is level with the sunny French Riviera. Hell, even frozen Minnesota has about the same solar potential as northern Spain...
If Europe can make solar work, so can the states (assuming a similar level of investment)
> If Europe can make solar work
Can you cite a region in Europe that physically independently covers its energy needs with solar+storage alone? </snark>
Stress on physical. Even if some regions claim renewables fully covering energy needs, that's at best on accounting level, those regions are still fully dependent on power import/export and simply could not function in an island mode for any extended period of time without at the very least brownouts. Quite importantly, it's always renewables, not solar.
The dispatchability problem is a real pain. Pool together wind + solar + hydro and the variability in power (!) output drops to levels possible to tame with realistic grid-scale storage sizes.
I am not talking about intra-day balancing here. It's the yearly cycle that comes to bite you. In my corner of Europe, if I wanted to go completely off-grid with solar+storage I would need storage well into the mid single-digit MEGA watt-hours, for the house needs (HVAC and DHW taking the lion's share) alone. That's laughably unrealistic.
> The northernmost point of California is level with the sunny French Riviera. Hell, even frozen Minnesota has about the same solar potential as northern Spain...
Yes, the southern states could probably make do with something like 3-4x overprovisioning, but that's still massive. So massive that any sort of windmill capability will outcompete any sort of COTS storage.