Over the past decade, prices for solar panels and wind farms have reached all-time lows.

However, the price for lithium ion batteries, the leading energy storage technology, has remained high.

So researchers are exploring other alternatives, including flow batteries, thermal batteries, and gravity-based systems.

Grist has Randall Munroe explain unique ways to power your home.

Somewhat timely given what’s going on in California.

xkcd on the best (and worst) ways to power your house with renewable energy. Our video features just a few of the many “useless but entertaining” ideas from his latest book, How To: Absurd Scientific Advice for Common Real-World Problems.