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.
That is enormous compared to other sources of emissions, excluding volcanic eruption. (US Forest Service; western fire suppression center, Boise, ID) The next biggest emitter of carbon dioxide is probably the ocean. It absorbs a great deal of the gas, however, the colder it is, the more it can hold. The bottom of the ocean contains water that is below the freezing point, but salinity and pressure prevent it from freezing.