Greenhouses

What is a greenhouse?

It's a house that focuses on increasing the efficiency of water, energy and materials ressources used.

In the United States, more than 50% of the energy is used on buildings, greenhouses help to reduce a huge amount of that energy. The excessive use of energy on buildings are underestimated and since greenhouses cost tree times more, people don't want to spend so much to protect the ecosystem.

Greenhouses use solar and wind energy to reduce the use of ressources to produce the same energy. It uses recycled materials for construction and orientate the windows to the sun. Making bigger windows they are able to improve the heating in the house reducing the need for electric heaters.

Source:

http://en.wikipedia.org/wiki/Green_building