Clean Energy from Wastewater

Do you know that the warm water flushed down to your city's sewage system can become a huge source of energy. I am serious. Heat of wastawater is already being put to use in a handful of buildings in British Colombia . There is a company  called International Wastewater Systems hopes to turn that a formidable business. According to the today's Globe&Mail post. That kind of energy recycling method can be used in densely packed cities that geothermal power is impractical. I hope City of Edmonton consider that issue to reduce cost of energy for all kind of  services that provides to the Edmontonians.