Seems like every time we turn around, the Department of Energy is making another announcement about our nation's energy future (if you believe that most cars will eventually be electric, these announcements are about our automotive future as well). Just a few days ago, we told you about the DOE's promising investment of $62 million into concentrating solar technology. Good news. Then we told you about the DOE's request for commentary on squeezing the last precious drops of fossil fuels from the
Tapping some of the enormous amounts of thermal energy that emanates from deep within the earth is one of the more promising methods of renewable power. Unlike wind and solar, geothermal tends to be a lot more consistent than the sun or flow of air. It now looks like geothermal power could have another potential benefit: waste water from at least one geothermal plant in central California is rich in lithium.