Any stationary, fossil-fuel-fired boiler or stationary, fossil-fuel-fired combustion turbine serving at any time, since the later of November 15, 1990, or the start-up of the unit's combustion chamber, a generator with nameplate capacity of more than 25 megawatts of electricity (MWe), producing electricity for sale.
Note: DHEC has started the regulation development process to change the following definition. For more information, see the September 25, 2009 Notice of Drafting .
This category includes:
- Units that commenced operation before January 1, 1999, a unit that has a maximum design heat input greater than 250 British thermal units per hour (mmBtu/hr) and does not serve a generator that has a nameplate capacity greater than 25 MWe if any such generator produces an annual average of more than one-third of its potential electrical output capacity for sale to the electric grid during any three calendar year period.
- For units that commenced operation on or after January 1, 1999, a unit that has a maximum design heat input greater than 250 mmBtu/hr that:
- At no time served a generator producing electricity for sale; or
- At any time served a generator producing electricity for sale, if any such generator has a nameplate capacity of 25 MWe or less and has the potential to use no more than 50 percent of the potential electrical output capacity of the unit.