It doesn't just have to be solar. There's plenty of other forms of renewable energy (hydro, wind, tidal) that all become more viable and efficient if you can ad

It doesn't just have to be solar. There's plenty of other forms of renewable energy (hydro, wind, tidal) that all become more viable and efficient if you can add storage. Better grid technology will help too. If we can transmit energy efficiently over long distances, there's less storage required. Build a global grid and the whole planet can run on renewables: it's always sunny (or windy) somewhere.