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Avoiding the use of fired heaters to provide the same amount of energy services generally translates into reduced
emissions of carbon dioxide (CO
2
) and other pollutants (see Figure 2). This can enable CHP projects to expedite air
permi ng, and in some cases allow large volume projects to avoid Title V permi ng.
Table 1 below summarizes an op mal CHP configura on for various gas processing plant capaci es, which includes
all the power and thermal needs for a full central gathering facility. In the 1200 MMSCFD capacity example, the total
savings in fuel efficiency can reach $500MM over a 15-year period when combining electricity and fuel savings.
Works Cited "Combined Heat and Power Technology Fact Sheet Series." Https://Betterbuildingssolutioncenter.energy.gov/, US Department of Energy,
Nov. 2017, https://betterbuildingssolutioncenter.energy.gov/sites/default/files/attachments/CHP%20Overview-120817_compliant_0.pdf
Reduced Emissions
Case Study: Savings in Fuel Efficiency
and Reduced Emissions
Figure 2. Emissions benefit of CHP.
CHP + WHRU CHP + WHRU CHP + WHRU
Grid Power + Hot Oil Gas
+ Fired Heaters
Total Facility Processing Capacity 400 MMSCFD 800 MMSCFD
1200
MMSCFD
Total Facility Electrical Demand 50 MW 100 MW 150 MW
Total Facility Thermal Demand
179 MMBTU/
hr
375 MMBTU/
hr
536 MMBTU/
hr
$2.00/MMBTU
Number of Turbines Required 1 2 3
Total Power Cost (Fuel/OPEX incl) 3.1 c/kWh 3.0 c/kWh 2.9 c/kWh 5.0 c/kWh
Annual Electricity Savings $8.5 MMUSD $17.7 MMUSD $27.4 MMUSD -
Annual Fuel Savings (Fired Heater) $3.7 MMUSD $7.4 MMUSD $11 MMUSD -
CAPEX Payback Period 3.8 yrs 3.5 yrs 3.2 yrs -
1,350 TPY CO
2
Total Emissions
690 TPY
CO
2
48% Reduc on
154 TPY NOx 42 TPY NOx 72% Reduc on
120 TPY
CO 6 TPY CO
95% Reduc on
