The sun’s energy can be captured by homemade solar hot-air collectors and thermosiphoning panels to provide free heat. The units direct air warmed by the sun through a window or wall opening into the ...

Solar space heating is tricky. Air is harder to keep warm than water, and while most of us need a shower on a hot day—we tend to want space heating when the sun is not doing enough for us.

Dear Jim: I would like to use some free solar heating in a south-facing kitchen. I cannot afford to have a system installed professionally. What type of simple solar heater can I build myself for one ...

While double-glazed windows do help save energy, Singaporean scientists have tweaked the concept to make it even more effective. Instead of leaving an air gap between the two panes of glass, the ...

A couple of years ago we heard about the MOlecular Solar Thermal (MOST) system, in which solar energy is stored in a liquid medium, then later released as heat. Now, the technology has been applied to ...

A domestic property loses as much as 20 percent of its heat through windows. For big glassy commercial buildings, that figure is a lot higher, resulting in big heating bills and inevitable disputes ...

If you’re thinking about going solar, we’ve got good news: your options have just been expanded. SolarWindow Technologies announced that their new cells can produce 50 times the energy of panels ...

You can save home energy bills with a heat pump. Even in the worst case locations solar power makes heat pumps good long-term ...

A British firm wins over $150,000 to begin commercializing its technology, which screen-prints organic solar cells directly onto windowpanes. An Oxford University-affiliated group has won over ...

Well, it’s likely not an energy solution for single-family homes. But skyscrapers built with these light-collecting windows ...