Conversion efficiency record crushed by First Solar at 21.5%


Last year, First Solar set a world record for conversion efficiency mark for cadmium telluride at 20.4 percent.  A year later and that figure has now been easily passed with a new record of 21.5 percent, and with that, First Solar anticipates to exceed 22 percent in 2015.   Continue reading… “Conversion efficiency record crushed by First Solar at 21.5%”


‘Blackest’ solar cell ever absorbs 99.7% of all light


Scientists create blackest silicon solar cell.

Scientists at Natcore Technology have created a black silicon solar cell with an average reflectance of 0.3%, making it the “blackest” solar cell ever designed. Natcore’s development offers a tenfold decrease in reflectance over the solar spectrum. The result is an increase in energy efficiency that could help solar power compete even more effectively with traditional fossil fuels.

Continue reading… “‘Blackest’ solar cell ever absorbs 99.7% of all light”


DEVap – 90% More Efficient Air Conditioner


DEVap cooling system

The National Renewable Energy Lab has Done It!  As Lloyd and other sensible people keep pointing out, if our buildings and cities were better designed, we would need a lot less air conditioning, and in many cases none at all. That should be goal #1. But because it’s doubtful that’s ubiquitous A/C is going away any time soon, it can’t hurt to make the technology more efficient (keeping buildings cool is using about 5% of the energy used in the US). That’s exactly what the engineers and scientists at the National Renewable Energy Laboratory (NREL) have done.


Continue reading… “DEVap – 90% More Efficient Air Conditioner”