Renewable energy is a lot like agriculture. There are millions of farms across the country, each producing a small portion of the commodity over vast tracts of land. Farms and warehouses store commodities like silage and corn for long-periods of time, allowing off-season access to seasonal produce to feed animals and humans alike year round. The agricultural system is quite cost-effective at producing food at affordable prices for most Americans. There is no reason we couldn't have millions of solar cells and wind turbines across America.

Electricity is very difficult to store in quantity. But so is food and feed. Both food and feed rot if left out to elements, and many foods can't even be stored for long periods of times even with the best of technologies. That's why a lot of foods are imported from other parts of the country out-of-season or other parts of the world where it's in season. But there is no reason we can't move electricity around long distances, nor is there any reason why we can have ample storage of electricity in many diversified storage facilities -- from big pump-hydro to batteries and flywheels.