Heat from a Northern Line vent will be piped to homes across Islington, saving consumers money and 500 tonnes of CO2 emissions a year, according to wired.co.uk.
The project was announced by Islington council and is part of an ongoing initiative to harness secondary heat in the city being pursued by the Mayor of London Boris Johnson. In July a report was released on the topic, explaining how the mayoral office would be looking into ways the city can harness and make use of "waste heat arising as a byproduct of industrial and commercial activities" and "the heat that exists naturally within the environment (air, ground, water)".
The Islington project claims to be the first of its kind in Europe and will deliver cheaper heating to 500 homes in the borough. The heat will be captured from a London Underground vent from a Northern Line station, as well as from an electrical substation owned by UK Power Networks, and facilitated by Islington's Bunhill Heat and Power heat network, which already uses wasted heat to provide cheaper, greener energy for 700 homes in the borough.