Of course, the problem with solar is that it cannot power even one home for a period of a week, much less a year, due to its complete weather dependence. Battery storage has been hailed as a solution to this weather dependence problem, but in view of its costs and land footprint, battery storage is still a fraction of what is needed to offset periods when the sun is not shining and the wind is not blowing.
The strongest solar power generation in Germany since September sent intraday power prices in Germany, Belgium, and the Netherlands to below zero for the early Monday afternoon, in yet another spate of negative prices that undermine investment in renewable energy capacity.