Energy sources can be as diverse as heat recovery, biomass, household waste, solar, gas or geothermal resources... Combined Heat & Power... Based on heat recovered from fossil-fuel power plant, EDF (65 %), in partnership with Datang Group (35 %), operates (a Henan province) ... In 2017, EDF signed a concession contract with the municipality of Lingbao (Henan province) to build and operate a to supply heating and electricity to local households and industrial areas.