Yes and no... Having many producers, connected by the grid, smooths out any fluctuations on the “minute” timescale. There’s also some smoothing because solar a

Yes and no... Having many producers, connected by the grid, smooths out any fluctuations on the “minute” timescale. There’s also some smoothing because solar and wind tend to peak at different times of the day. Batteries have also improved dramatically, and there are “smart grid” efforts that could help, such as running some consumers during times of peak production (refrigerator compressors, aluminum smelters), or using grid-connected batteries, such as charging cars. The storage problem is imminently solvable and, with the improvements in solar efficiency, renewables are certain to become cost leaders rather soon. In fact they may already have.