You know how when a lot of people get together it starts to get really warm in that space? Well, researchers in Sweden are planning to take all of that errant energy and use it to power heating systems in areas with high pedestrian traffic, such as Stockholm Central Station, where 250,000 pass through on a daily basis.

The state-owned company Jernhuset have designs to keep a complex including an office building, a retail space and hotel nice and cozy. Using the energy from the heat generated by people to warm water in pipes running throughout the structure, the heated liquid would them be pumped into reservoirs where places get cold.

The project's leader, Karl Sundholm, notes that: "It’s just pipes, water and pumps, but we haven’t heard of anyone else using this technology in this way before."

PhysOrg, via Inhabitat, via OhGizmo!