Allowances surrendered = [dispatch system adjusted utilization + (dispatch system aggregate baseline * percentage change in dispatch system sales)] * unit's share * emissions rate · 2000 lbs/ton.
If the result of the formula for "allowances surrendered" is less than or equal to zero, then no allowances are surrendered.
(v)Calculating emissions rate. "Emissions rate" (in lbs/mmBtu) is the weighted average emissions rate for sulfur dioxide of all units and generators, within and outside the dispatch system, that contributed to the dispatch system's electrical output for the year, calculated as follows: Emissions rate = [fraction of generation within dispatch system * dispatch system emissions rate] + [fraction of generation from non-utility generators * non-utility generator average emissions rate] + [fraction of generation outside dispatch system * fraction of non-Phase 1 and non-foreign generation in NERC region * NERC region emissions rate]
where:
(A) "Fraction of generation within dispatch system" is the fraction of the dispatch system's total sales accounted for by generation from units and generators within the dispatch system, other than generation from non-utility generators. This term equals the total generation (in Kwh) by all units and generators within the dispatch system for the calendar year minus the total non-utility generation from non-utility generators within the dispatch system for the calendar year and divided by the total sales (in Kwh) by the dispatch system for the calendar year.(B) Dispatch system emissions rate" is the weighted average rate (in lbs/mmBtu) for the dispatch system calculated as follows: Dispatch system emissions rate =
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where:
gi = the difference between a Phase II unit's actual utilization for the calendar year and that Phase II unit's baseline. If that difference is less than or equal to zero, then the difference shall be treated as zero only for purposes of paragraph (c)(2)(v) of this section and that unit will be excluded from the calculation of dispatch system emissions rate. Notwithstanding the prior sentence, if the actual utilization of each Phase II unit for the year is equal to or less than the baseline, then gi shall equal a Phase II unit's actual utilization for the year. Notwithstanding any provision in this paragraph (c)(2)(v)(B) to the contrary, if the actual utilization of each Phase II unit in the dispatch system is zero or there are no Phase II units in the dispatch system, then the dispatch system emissions rate shall equal the fraction of non-Phase I and non-foreign generation in the NERC region multiplied by the NERC region emissions rate.
ri = a Phase II unit's emissions rate (in lbs/mmBtu), determined in accordance with part 75 of this chapter, for the calendar year.
k = number of Phase II units in the dispatch system.
(C) "Fraction of generation from non-utility generators" is the fraction of the dispatch system's total sales accounted for by generation acquired from non-utility generators within or outside the dispatch system. This term equals the total non-utility generation from non-utility generators (within or outside the dispatch system) for the calendar year divided by the total sales (in Kwh) by the dispatch system for the calendar year.(D) "Non-utility generator" is a power production facility (within or outside the dispatch system) that is not an affected unit or a sulfur-free generator and that has a "non-utility generator emissions rate" for the calendar year under paragraph (c)(2)(v)(F) of this section.(E) "Non-utility generation" is the generation (in Kwh) that the dispatch system acquired from a non-utility generator during the calendar year as required by Federal or State law or an order of a utility regulatory authority or under a contract awarded as the result of a power purchase solicitation required by Federal or State law or an order of a utility regulatory authority.(F) "Non-utility generator average emissions rate" is the weighted average rate (in lbs/mmBtu) for the non-utility generators calculated as follows: Non-utility generator average emissions rate =
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where:
Ni = non-utility generation from a non-utility generator;
Ri = non-utility generator emissions rate for the calendar year for a non-utility generator, which shall equal the most stringent federally enforceable or State enforceable SO2 emissions limitation applicable for the calendar year to such power production facility, as determined in accordance with paragraphs (c)(2)(v)(F) (1), (2), and (3) of this section; and
n = number of non-utility generators from which the dispatch system acquired non-utility generation. If n equals zero, then the non-utility generator average emissions rate shall be treated as zero only for purposes of paragraph (c)(2)(v) of this section.
(1) For purposes of determining the most stringent emissions limitation, applicable emissions limitations shall be converted to lbs/mmBtu in accordance with appendix B of this part. If an applicable emissions limitation cannot be converted to a unit-specific limitation in lbs/mmBtu under appendix B of this part, then the limitation shall not be used in determining the most stringent emissions limitation. Where the power production facility is subject to different emissions limitations depending on the type of fuel it uses during the calendar year, the most stringent emissions limitation shall be determined separately with regard to each type of fuel and the resulting limitation with the highest amount of lbs/mmBtu shall be treated as the facility's most stringent federally enforceable or State enforceable emissions limitation.(2) If there is no applicable emissions limitation that can be used in determining the most stringent emissions limitation under paragraph (c)(2)(v)(F)(1) of this section, then the power production facility has no non-utility generator emissions rate for purposes of paragraphs (c)(2)(v) (D) and (F) of this section and the generation from the facility shall be treated, for purposes of this paragraph (c)(2)(v) as generation from units and generators within the dispatch system if the facility is within the dispatch system or as generation from units and generators outside the dispatch system if the facility is outside the dispatch system.(3) Notwithstanding paragraphs (c)(2)(v)(F) (1) and (2) of this section, if the power production facility is authorized under Federal or State law to use only natural gas as fuel, then the most stringent emissions limitation for the facility for the calendar year shall be deemed to be 0.0006 lbs/mmBtu.(G) "Fraction of generation outside dispatch system" = 1-fraction of generation within dispatch system-fraction of generation from non-utility generators.(H) "Fraction of non-Phase I and non-foreign generation in NERC region" is the portion of the NERC region's total sales generated by units and generators other than Phase I units or foreign sources in the unit's NERC region in 1985, as set forth in table 1 of this section.(I) "NERC region emissions rate" is the weighted average emission rate (in lbs/mmBtu) for the unit's NERC region in 1985, as set forth in table 1 of this section. Table 1-NERC Region Generation and Emissions Rate in 1985
NERC region | Fraction of non-phase I and non-foreign generation in NERC region | NERC weighted average emissions rate (lbs/mmBtu) |
WSCC | 0.847 | 0.466 |
SPP | 0.948 | 0.647 |
SERC | 0.749 | 1.315 |
NPCC | 0.423 | 1.058 |
MAPP | 0.725 | 1.171 |
MAIN | 0.682 | 1.495 |
MAAC | 0.750 | 1.599 |
ERCOT | 1.000 | 0.491 |
ECAR | 0.549 | 1.564 |