That's what I love about "renewables" -- if you want power at night, on cloudy days, or on calm days, you have to buy TWO power plants where previously only ONE did the job. This is the dirty little secret of "renewables." Take your pick from one of the following...
- Solar or Wind PLUS batteries
- Solar or Wind PLUS pumped storage
- Solar or Wind PLUS compressed air energy storage
- Solar or Wind PLUS super capacitors
- Solar or Wind PLUS flywheels
- Solar or Wind PLUS conventional fossil fueled power plant backup (my favorite)