When you think of where energy comes from, you might picture a power plant or maybe wind mills. You probably wouldn't think of a pile of 12 tons of almond shells.
California is hungry for renewable energy. Solar and wind power have taken off thanks to the state's ambitious clean energy goals. But there's another way to generate electricity — by using organic material like agricultural and tree waste. It's known as biomass power.
Matt Summers is an engineer with West Biofuels at their test power plant near Sacramento. California, by the way, is the world leader in growing almonds.
"So we've got more almond shells than anybody else. And you know, we know some companies that handle almond shells and they're always looking for somewhere to take them," says Summers.
But where some see a waste product, Summers sees an energy source.
"So this is the heart of the West Biofuels process," he says, pointing to a tower of industrial equipment that turns almond shells into electricity.
First, the waste, or biomass, is fed into a reactor.
