As the Northwest moves toward using more renewable energy like wind and solar, one big issue keeps popping up. What to do when there’s too much power on the grid?
When there's not enough demand to run air-conditioners, heaters, or other appliances, all that clean energy just goes to waste.
But several utilities in Oregon are starting to figure out how to store that extra energy.
Partly in response to a legislative requirement, Portland General Electric Company is proposing to develop several projects.