NOx Emissions Impacts from Widespread Deployment of CHP in ...

4.0 Results and Discussion
NOx Emissions Report
As shown in Table 4-1, the technical potential for additional CHP systems in HGB is
large. In the commercial sector, potential exists today to develop CHP systems at about
2,944 facilities, which could amount to between 274 to 1,317 MW of electrical capacity.
In the industrial sector, an estimated 946 additional CHP projects are technically possible,
which could generate electrical capacity in excess of about 1,300 MW. In total, an
estimated 1,600 – 2,600 MW of CHP capacity is possible at nearly 3,900 sites.
Table 4-1: CHP Potential in HGB
Sector Number of Facilities Capacity (MW)
Commercial 2,944 274 – 1,317
Industrial 946 1,298
Total 3,890 1,572 - 2,615
Note: Electrical capacity range for commercial CHP depends upon Case 1 or Case 3 operation.
Widespread CHP implementation of the magnitude suggested in Table 4-2 would likely
produce a dramatic overall reduction in NOx emissions. Conservative estimates put the
savings at between 2.9 to 9.4 tons per day from the commercial sector and about 10.0
tons per day from the industrial sector. Taken together, the total potential NOx impact
from commercial and industrial CHP implementation is estimated to be between 12.9 and
19.4 tons per day, depending on operating strategy adopted in the commercial sector.
However, because the majority of CHP systems implemented in the commercial sector
are anticipated to use small systems using an Optimal Thermal Utilization (Case 3)
strategy, total NOx savings achievable in the commercial sector are most likely to be in
the range of 3 to 5 tons per day. Consequently, the total potential for NOx savings from
widespread adoption of CHP in HGB is estimated to be in the rage of 13 – 15 tons per
day. Potential NOx savings during the peak ozone season are expected to amount to
between 17-21 tons per day. By 2020, economic and population growth in HGB is
anticipated to create additional CHP opportunities across the region, which could result in
even greater NOx reductions.
Table 4-2: Potential NOx Emission Reductions
Likely NOx Impacts
Annual
Average
(tons/day)
Peak Ozone
Season
(tons/day)
Commercial 2.9 – 4.9 5 - 9
Industrial 10.0 11.7
Total HGB 12.9 – 14.9 17 - 21
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