Batteries are definitely an option for day -> night shifting. If not today, then soon, and without requiring and technological advances. Seasonal or month-long

Batteries are definitely an option for day -> night shifting. If not today, then soon, and without requiring and technological advances. Seasonal or month-long periods of low-generation are another matter, and as-yet an unsolved problem. It may be that synthesizing fuels ends up being a sensible option here.