I hope that’s true, but so far, there aren’t great solutions for large-scale electricity storage. For individual users, you can get large lithium-ion batteries that can store enough power for 2-3 days for a typical American home, but last time I checked those were in the $5000+ range, exclusive of the costs of wiring your home so that you have an immediate back-up in case of power failure.

And, just so I’m clear, I’m 100% in favor of renewables like hydro, solar, wind, and even waves.