DEFINITION: The table refers to electricity generation from fossil fuels, nuclear, hydro (excluding pumped storage), geothermal, solar, biomass, etc. It includes electricity produced in electricity-only plants and in combined heat and power plants. Both main activity producer and autoproducer plants have been included, where data are available. Main activity producers generate electricity for sale to third parties as their primary activity. Autoproducer undertakings generate electricity wholly or partly for their own use as an activity which supports their primary activity. Both types of plants may be privately or publicly owned. The forecasts provided in the table refer to the Reference Scenario of the World Energy Outlook.