When people think of solar these days, photovoltaics, or solar cells, pop into their heads. But there is just so much more than merely PV when it comes to solar devices.
The United States remains on the low end of countries using energy powered by wind. Experts point to tax credits as a factor in efforts to establish wind as an energy source.
Hydropower will never be the complete answer to emissions-free energy production in the U.S., but a strong case can be made for it becoming a useful part of the answer.
Looking at the untapped potential for hydropower to supply the U.S. with carbon-free electricity, Lea-Rachel Kosnik finds ample opportunities for expanding hydro.