California continues to lead the US in renewable energy
But its greenhouse gas emissions reductions have stalled.
Tesla's 'Tiny House' roadshow demystifies its energy tech
Buyers can see how much they'll save with solar panels and a Powerwall battery.
Alphabet is using salt and antifreeze to store power from wind farms
It'll help prevent wasted renewable energy.
Researchers made a battery out of trash
The battery is the latest step in renewable energy storage.
South Korea turns its back on coal and nuclear power
The tech-centric country plans a rapid switch to renewable energy.
San Francisco train service plans to run solely on clean energy
It might take a few decades, however.
Portland plans to convert poop into fuel
The city will convert methane from sewage into renewable natural gas for trucks.
Coal company plans Kentucky's biggest solar farm for old mine site
The trial will repurpose sites drained of fossil fuels.