ILLINOIS REGISTER 10451
POLLUTION CONTROL BOARD
NOTICE OF ADOPTED AMENDMENTS
"Oil-fired unit" means a unit combusting fuel oil for more than 15.0 percent of the
annual heat input in a specified year and not qualifying as coal-fired.
"Output-based emission standard" means, for the purposes of Subpart B of this
Part, a maximum allowable rate of emissions of mercury per unit of gross
electrical output from an EGU.
"Potential electrical output capacity" means 33 percent of a unit's maximum design
heat input, expressed in mmBtu/hr divided by 3.413 mmBtu/MWh, and multiplied
by 8,760 hr/yr.
"Project sponsor" means a person or an entity, including but not limited to the
owner or operator of an EGU or a not-for-profit group, that provides the majority
of funding for an energy efficiency and conservation, renewable energy, or clean
technology project as listed in Sections 225.460 and 225.560, unless another
person or entity is designated by a written agreement as the project sponsor for the
purpose of applying for NOx allowances or NOx Ozone Season allowances from
"Rated-energy efficiency" means the percentage of thermal energy input that is
recovered as useable energy in the form of gross electrical output, useful thermal
energy, or both that is used for heating, cooling, industrial processes, or other
beneficial uses as follows:
For electric generators, rated-energy efficiency is calculated as one
kilowatt hour (3,413 Btu) of electricity divided by the unit's design heat
rate using the higher heating value of the fuel, and expressed as a
For combined heat and power projects, rated-energy efficiency is
calculated using the following formula:
REE = ((GO + UTE)/HI) × 100
REE = Rated-energy efficiency, expressed as percentage.
GO = Gross electrical output of the system expressed in Btu/hr.
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