Learn to increase efficiency by using or losing less.

Everything that involves your lawn and garden.

Discuss tools (hardware and software) to help build, renovate and conserve.

Use power the Earth provides and other heat pump related topics.

Efficient lighting can massively decrease energy useage.

Discuss ecofriendly materials, construction practices, etc.

Includes discussion on any form of solar heating.

Power from the Sun.

Power from the wind.

Discuss uses of biofuels.

Post here if your improvement doesn't fit into the other catagories above. Normal improvements welcome.

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