How to Do Energy Storage on a Massive Scale

Meet Danielle Fong, co-founder of LightSail Energy.

Danielle Fong is not one to make things easy for herself. At 12, she dropped out of middle school and... went to college. After finishing up at Dalhousie University, she enrolled in a Princeton PhD program at 17, where she wanted to work on perhaps the world's most perplexing energy technology: nuclear fusion. Finding that wanting, she went looking for a new challenge and ended up co-founding LightSail Energy.

The Atlantic's Alexis Madrigal in conversation with entrepreneurs shaping our future. See full coverage

LightSail makes what sounds like the world's least sexy product: a new kind of air compressor. But compressed air could be the key to storing electricity on the very large scale required by utilities. And that, as it turns out, would be a key advance in creating a new energy system based on intermittent sources like wind and solar.

I saw the LightSail prototype in their old offices in an old fire station in Oakland's Chinatown. (They've since moved on to a larger space, a former chocolate factory in Berkeley.) There's not much to differentiate it from any other piece of industrial equipment, but few makers of traditional air compressors get backing from Khosla Ventures and TriplePoint Capital.

Previous compressed air systems lost the vast majority of power that you could put into them. But LightSail says their system can return 70 percent of the power that's put into it back to the grid. That'd be as effective as the current best solution (literally pumping water up a hill, then releasing it back through turbines) but with less restrictions. The key to their technology is the simple addition of a fine mist of water during the compressor's operation; the key to their business is proving that their technology works the way they say it does.

Stay tuned for the next two segments of my interview with Fong, which will debut next week.

Presented by

Google Street View, Transformed Into a Tiny Planet

A 360-degree tour of our world, made entirely from Google's panoramas

Join the Discussion

After you comment, click Post. If you’re not already logged in you will be asked to log in or register.

blog comments powered by Disqus

Video

Google Street View, Transformed Into a Tiny Planet

A 360-degree tour of our world, made entirely from Google's panoramas

Video

The 86-Year-Old Farmer Who Won't Quit

A filmmaker returns to his hometown to profile the patriarch of a family farm

Video

Riding Unicycles in a Cave

"If you fall down and break your leg, there's no way out."

Video

Carrot: A Pitch-Perfect Satire of Tech

"It's not just a vegetable. It's what a vegetable should be."

Video

The Benefits of Living Alone on a Mountain

"You really have to love solitary time by yourself."

More in Technology

Just In