The largest Passive House project in the world

Gaobeidian Railway City in China has the largest Passive House project in the world, showing how to scale energy efficient building. This single project totals 330,000 square meters of certified Passive House buildings.

UK's first energy positive classroom produces 1.5x the energy it uses

Known as the Active Classroom, the energy-producing classroom stands as a shining example of what is possible as the U.K. and other nations attempt to transform their energy systems in response to climate change.

Power station ski resort in Copenhagen

This is a guest post by Mark Tyler. A very interesting concept has been proposed for a new waste-to-energy power station on the outskirts of Copenhagen, Denmark. A company called Amagerforbraeding ...

One tonne life: interview with project architect Gert Wingårdh on his energy efficient building (video)

Last week the One Tonne Life project began in Stockholm and TreeHugger was there to meet the key players in this fascinating low carbon lifestyle experiment. To recap, the Lindell family have moved