Nov
21
2009
0

Can a swimming pool be solar powered?

Photo by titlap - CC-BY

There are several ways in which a swimming pool can be solar powered. Not only can the water be heated by solar power, but you can also use free energy from the sun to light the pool and to operate the pool’s filter pump. In this Quezi guest post, Rickey Juneau answers some questions about swimming [more...]

Jul
17
2009
0

Why is Photovoltaic (PV) Solar Energy Important?

A Large Photovoltaic Solar Array (US Dept. of Energy - PD)

Photovoltaic cells directly convert sunlight into electricity.   In the past few decades, this elegant source of solar energy has become more efficient, cheaper, and more versatile in how and where they can be put to use.   As the world ever-so-slowly weans itself from a dependence on fossil fuels, solar power from PV cells will play [more...]

Written by davidsarokin | 556 views | Tags: , , | 0 Comments
Feb
06
2009
2

Which forms of energy count as green energy?

Wind power at Altamont Pass (photo by Kevin - CC-BY)

Green energy is a somewhat nebulous term, but we’ll take it to refer to energy sources that are carbon neutral, and are replenished naturally within timescales of the order of a human lifetime. That gives us quite a few sources of green energy. Hydro power harnesses the energy of moving water. This can take the form [more...]

Privacy Policy | Acknowledgements