The top, phosphorus-doped layer contains more electrons ... To see solar power in action, check out This Solar House.

We also installed roof jacks (to hold up the solar array) and then a new composite shingle roof. Finally, in July, we put in a whole-house cooling fan and whole-house heat-recirculating system (as ...

Slide the back between the two sides, keeping it flush with the top and bottom of the sides ... Place your new solar-powered ...

Opinions expressed by Forbes Contributors are their own. Daniela De Lorenzo is a Oslo-based reporter covering sustainability. Solar power is the cheapest source of clean energy currently on the ...

The glass front turned their house into a passive solar home, which meant that it could collect and retain heat from the sun to warm its interiors, thereby reducing their energy consumption ...