Energy Storage Will Soon Replace Simple Cycle Combustion Turbine Peaker Plants. Power grids need extra generating capacity to work properly. For example, about 20 percent of New York Stateâs generation fleet runs less than 250 hours a year. Because they donât run much, âpeaker plantsâ are by design the cheapest and least efficient fossil generators.
The largest source of carbon dioxide (CO2) emissions are currently  from electric generation through the combustion of fossil fuels.  Particularly the burning of coal is mos â¦ t pollutive, as compared to  oil or natural gas generation.
The major sources for carbon dioxide emissions. | Sourced From Helium |. Carbon dioxide is a common gas that comes from primarily natural sources, when a carbon atom combines with an oxygen molecule. It makes up a small, but important part of our atmosphere, which is primarily nitrogen and oxygen.