- Harvest the body heat
Many large cities have implemented heat recovery projects in their major metro systems. Millions of passengers, as well as train motors and brakes, operate in a closed metro environment creating extreme heat.
The railway operators are also aware of the heat problem since they have to spend a lot of money to remove the heat from the normal way. However, metro operators are turning this excess heat into something efficient: power Green Mountain Energy rates and heating for local homes and businesses. In London, hundreds of homes around Highbury Islington are part of London’s underground heat recovery scheme, while similar schemes exist across Europe. But it’s not just the underground metro system that collects and transforms heat. For example, the 2.5 million square foot shopping mecca, Mall of America, uses light generated by the sheer volume of people passing through it. The fire combats Minnesota’s often