The text below the image reads: “SOLAR SPECTRUM. / FROM NEGATIVES MADE WITH AN INTERFERENCE GRATING BY LEWIS M. RUTHERFURD, NEW YORK, 1875 / PRINTED AND PUBLISHED BY OSCAR G. MASON, NEW YORK, U. S. A.

The ASTM G173 Standard Spectral Distribution of Sunlight represents a standard, reference solar spectrum that is used for solar photovoltaics testing and calibration purposes. It was defined in the ...

As the price of silicon panels has continued to come down, we’ve reached the point where they’re a small and shrinking cost of building a solar farm. That means that it might be worth spending more to ...

Solar power is already one of the fastest growing sources of electricity on the planet, yet scientists say it is still only ...

Solar power has long been constrained by a supposedly unbreakable ceiling on how much sunlight a panel can turn into electricity. That barrier is now cracking as a new class of solar materials pushes ...

Solar manufacturers are pushing the limits of solar efficiency. CNET explains what you need to pay attention to if you're shopping for residential solar panels. A major solar panel manufacturer says ...

Crystalline-silicon solar panels are efficient, reliable, and dominate the solar-panel market. However, new third-gen solar technology could do what c-Si solar panels cannot, including flexible, ...