An energy source that is regenerative or virtually inexhaustible. Typical examples are wind, geothermal and water power. The shutdown of a generating unit, transmission line, or other facility, for inspection or maintenance, in accordance with an advance schedule. Substations are like interchanges on interstate highways or intersections on city streets, depending on the voltages involved and the amount of power passing through them. Enclosed by fences, substations contain transformers, switches, circuit breakers and other devices used to control and direct the flow of electric power through the energy delivery grid.
Sulfur dioxide is a product of fossil fuel combustion, such as the burning of oil or coal.
Small amounts of sulfur contained in the fuel is converted into sulfur dioxide in the combustion process. Emissions of sulfur dioxide are strictly regulated, monitored and enforced by local, state and federal environmental agencies to protect people, animals and vegetation. A device used to raise or lower electrical voltage. There is no specific standard for transmission-level voltage. It refers to that part of the electric system dedicated to the delivery of bulk power from power plants to transmission substations scattered around the transmission grid.