Wind and solar energy are growing rapidly in the U.S. As these energy sources become a bigger part of the electricity mix, their growth raises new questions: How do solar and wind influence energy prices? [...]
A simple potassium solution could boost the efficiency of next-generation solar cells, by enabling them to convert more sunlight into electricity. An international team of researchers led by the University of Cambridge found that the addition of potassium iodide 'healed' the defects and immobilised ion movement, which to date have limited the efficiency of cheap perovskite solar cells. [...]
A proposal that would lead to the closing of two Pueblo coal plants a decade earlier than planned is before the Colorado Public Utilities Commission, after COSEIA joined with 13 other groups and Xcel Energy asking that the plan be considered. If approved, it could lead to $2.5 billion in clean energy investments in rural Colorado and up to 700 megawatts more solar energy.
COSEIA had extensive discussions with members about the proposal because the plan is to pay for the early coal plant retire [...]
In recent years, perovskites have taken the solar cell industry by storm. They are cheap, easy to produce and very flexible in their applications. Their efficiency at converting light into electricity has grown faster than that of any other material — from under four percent in 2009 to over 20 percent in 2017 — and some experts believe that perovskites could eventually outperform the most common solar cell material, silicon. [...]
The electricity generated by a solar photovoltaic (PV) system depends on the orientation and tilt of the PV panels, and in some cases, its ability to track the sun throughout the day. Because photovoltaic panels operate more efficiently when oriented directly at the sun, some systems use solar-tracking technology to increase electricity generation by rotating the panels along one or two axes. [...]
In October, Environment America Research & Policy Center showcased Shining Rewards, a new review of 16 value-of-solar studies from around the country. The report shows what we already know intuitively: Solar panels provide pollution-free energy that delivers far reaching benefits to people, the environment, the economy, and the electric grid. [...]