How much is 23 megawatts of electricity? Enough energy to power 23,000 homes. This is how much electricity could be generated by recovering waste heat at Rio Tinto Alcan’s manufacturing facility in Edmonton. Energreen Solutions and Strathcona Works are teaming up for a co-generation project that is expected to reduce emissions released from the facility while also creating new revenue streams. This is just one of the 11 projects funded through ERA’s Industrial Efficiency Challenge.