These worksheets are derived from the algorithms present in, "IPM Model – Revisions to Cost and Performance 

for APC Technologies, SCR Cost Development Methodology, Final August 2010, Project 12301-007, Perrin 

Quarles Associates, Inc. Prepared by Sargent & Lundy."
Summary of Cost Differences Between NOx Control at 0.08 lbs/MMBtu and 0.05 lbs/MMBtu

Cost Category

NOx Controlled to 0.08 

lbs/MMBtu

NOx Controlled to 

0.05 lbs/MMBtu

SCR $58,104,000 $60,265,000 

Reagent Preparation $2,178,000 $2,280,000 

Engineering and construction management $6,569,000 $6,796,000 

Labor adjustment for 6 X 10 shifts, per diem, etc. $6,569,000 $6,796,000 

Contractor profit and fees $6,569,000 $6,796,000 

Total capital, engineering, and construction $85,400,000 $88,344,000 

Total project $95,050,000 $98,327,000 

Variable O&M urea ($/MWh) $0.32 $0.38 

Variable O&M catalyst ($/MWh) $0.24 $0.27 

Total variable O&M ($/MWh) $0.79 $0.89 
0.05 lbs/MMBtu

Percent 

Increase

3.59

4.47

3.34

3.34

3.34

3.33

3.33

16.75

12.13

10.89
GGS SCR Capital Cost Estimate Worksheet Assuming NOx Control at 0.08 lbs/MMBtu

Variable Designation Units Value Calculation

Unit Size A (MW) 700 Input

Retrofit Factor B 1 Input (An "average" retrofit has a factor = 1.0)

Heat Rate C (Btu/kWh) 7588 Input

NOx Rate D (lb/MMBtu) 0.23 Input

SO2 Rate E (lb/MMBtu) 0.15 Input

Type of Coal F PRB Input

Coal Factor G 1.05 Bituminous =1.0, PRB=1.05, Lignite=1.07

Heat Rate Factor H 0.7588 C/10000

Heat Input I (Btu/hr) 5.31E+09 A*C*1000

Capacity Factor J (%) 100 Input

NOx Removal Efficiency K (%) 65.2 Input

NOx Removal Factor L 0.815 K/80

NOx Removed M (lb/hr) 797 D*I/106

*K/100

Urea Rate (100%) N (lb/hr) 556 M*0.525*60/46*1.01/0.99

Steam Required O (lb/hr) 629 N*1.13

Aux Power P (%) 0.51 0.56*(G*H)0.43; Auxilliary power

Urea Cost 50% wt sol. R ($/ton) 400 Input

Catalyst Cost S ($/m3) 7000 Input

Aux Power Cost T ($/kWh) 0.046 Input

Steam Cost U ($/klb) 4 Input

Operating Labor Rate V ($/hr) 40.6 Labor cost including all benefits

Costs are all based on 2009 dollars

Capital Cost Calculation

 Include: equipment, installation, buildings, foundations, electrical, and retrofit difficulty.

 BMR ($) = 180000*(B)*(L)0.2*(A*G*H)^0.92 $58,104,000 SCR (inlet ductwork, reactor, bypas

 BMF ($) = 410000*(M)0.25 $2,178,000 Base reagent preparation cost

 BMA ($) = If E >= 3 then 65000*(B)*(A*G*H)0.78; else 0 $0 Air heater modification / SO

 BMB ($) = 380000*(B)*(A*G*H)0.42 $5,411,000 ID or booster fans & auxiliary powe

 BM ($) = BMR + BMF + BMA + BMB $65,693,000 Total bare module cost including re

 BM ($/kW) $94 Base cost per kW

Total Project Cost

 A1 = 10% of BM $6,569,000 Engineering and construction mana

 A2 = 10% of BM $6,569,000 Labor adjustment for 6 x 10 hour s

 A3 = 10% of BM $6,569,000 Contractor profit and fees

 CECC($) = BM+A1+A2+A3 $85,400,000 Capital, engineering and constructi

 CECC($/kW) = $122 Capital, engineering and constructi

 B1 = 5% of CECC $4,270,000 Owners costs including "home offic
 B2 = 6% of (CECC + B1) $5,380,000 AFUDC (based on approximately 3% 

 TPC ($) = CECC + B1 + B2 $95,050,000 Total project cost

 TPC ($/kW) = $136 Total project cost per kW
 has a factor = 1.0)

 Lignite=1.07

uctwork, reactor, bypass) island cost

nt preparation cost

modification / SO3 control (bituminous only & > 3 lb/MMbtu)

er fans & auxiliary power modification costs

module cost including retrofit factor

g and construction management costs

stment for 6 x 10 hour shift premium, per diem, etc..

 profit and fees

gineering and construction cost subtotal

gineering and construction cost subtotal per kW

sts including "home office" costs (owners engineering, management, and procurement activities)
sed on approximately 3% per year for a 2 year engineering and construction cycle)

ct cost per kW
GGS SCR Capital Cost Estimate Worksheet Assuming NOx Control at 0.08 lbs/MMBtu

Variable Designation Units Value Calculation

Unit Size A (MW) 700 Input

Retrofit Factor B 1 Input (An "average" retrofit has a factor = 1.0)

Heat Rate C (Btu/kWh) 7588 Input

NOx Rate D (lb/MMBtu) 0.23 Input

SO2 Rate E (lb/MMBtu) 0.15 Input

Type of Coal F PRB Input

Coal Factor G 1.05 Bituminous =1.0, PRB=1.05, Lignite=1.07

Heat Rate Factor H 0.7588 C/10000

Heat Input I (Btu/hr) 5.31E+09 A*C*1000

Capacity Factor J (%) 100 Input

NOx Removal Efficiency K (%) 65.2 Input

NOx Removal Factor L 0.815 K/80

NOx Removed M (lb/hr) 797 D*I/106

*K/100

Urea Rate (100%) N (lb/hr) 556 M*0.525*60/46*1.01/0.99

Steam Required O (lb/hr) 629 N*1.13

Aux Power P (%) 1 0.56*(G*H)0.43; Auxilliary power

Urea Cost 50% wt sol. R ($/ton) 400 Input

Catalyst Cost S ($/m3) 7000 Input

Aux Power Cost T ($/kWh) 0 Input

Steam Cost U ($/klb) 4 Input

Operating Labor Rate V ($/hr) 41 Labor cost including all benefits

Costs are all based on 2009 dollars

Fixed O&M Cost

 FOMO ($/kW yr) = (1/2 operator time assumed)*2080*V/(A*1000) $0.060 Fixed O&M additional operating la

 FOMM ($/kW yr) = IF A < 500 then $200,000 ELSE $300,000 $0.429 Fixed O&M maintenance material a

 FOM ($/kW yr) = FOMO + FOMM $0.489 Total fixed O&M costs

Variable O&M

 VOMR ($/MWh) = N*R/A/1000 $0.318 Variable O&M costs for urea

 VOMW ($/MWh) = 0.3*(G)2.9*(L)0.71/8760/J*100*S $0.239 Variable O&M costs for catalyst rep

 VOMM ($/MWh) = O*U/A/1000 $0.004 Variable O&M costs for steam

 VOMP ($/MWh) = P*T*10 $0.234 Variable O&M costs for additional 

 VOM ($/MWh) = VOMR + VOMW + VOMM $0.794 Total variable O&M costs
 has a factor = 1.0)

 Lignite=1.07

 additional operating labor costs

 maintenance material and labor costs

&M costs for urea

&M costs for catalyst replacement and disposal

&M costs for steam

&M costs for additional auxillary power required

ble O&M costs
GGS SCR Capital Cost Estimate Worksheet Assuming NOx Control at 0.05 lbs/MMBtu

Variable Designation Units Value Calculation

Unit Size A (MW) 700 Input

Retrofit Factor B 1 Input (An "average" retrofit has a factor = 1.0)

Heat Rate C (Btu/kWh) 7588 Input

NOx Rate D (lb/MMBtu) 0.23 Input

SO2 Rate E (lb/MMBtu) 0.15 Input

Type of Coal F PRB Input

Coal Factor G 1.05 Bituminous =1.0, PRB=1.05, Lignite=1.07

Heat Rate Factor H 0.7588 C/10000

Heat Input I (Btu/hr) 5.31E+09 A*C*1000

Capacity Factor J (%) 100 Input

NOx Removal Efficiency K (%) 78.26 Input

NOx Removal Factor L 0.97825 K/80

NOx Removed M (lb/hr) 956 D*I/106

*K/100

Urea Rate (100%) N (lb/hr) 668 M*0.525*60/46*1.01/0.99

Steam Required O (lb/hr) 755 N*1.13

Aux Power P (%) 0.51 0.56*(G*H)0.43; Auxilliary power

Urea Cost 50% wt sol. R ($/ton) 400 Input

Catalyst Cost S ($/m3) 7000 Input

Aux Power Cost T ($/kWh) 0.046 Input

Steam Cost U ($/klb) 4 Input

Operating Labor Rate V ($/hr) 40.6 Labor cost including all benefits

Costs are all based on 2009 dollars

Capital Cost Calculation

 Include: equipment, installation, buildings, foundations, electrical, and retrofit difficulty.

 BMR ($) = 180000*(B)*(L)0.2*(A*G*H)^0.92 $60,265,000 SCR (inlet ductwork, reactor, bypas

 BMF ($) = 410000*(M)0.25 $2,280,000 Base reagent preparation cost

 BMA ($) = If E >= 3 then 65000*(B)*(A*G*H)0.78; else 0 $0 Air heater modification / SO

 BMB ($) = 380000*(B)*(A*G*H)0.42 $5,411,000 ID or booster fans & auxiliary powe

 BM ($) = BMR + BMF + BMA + BMB $67,956,000 Total bare module cost including re

 BM ($/kW) $97 Base cost per kW

Total Project Cost

 A1 = 10% of BM $6,796,000 Engineering and construction mana

 A2 = 10% of BM $6,796,000 Labor adjustment for 6 x 10 hour s

 A3 = 10% of BM $6,796,000 Contractor profit and fees

 CECC($) = BM+A1+A2+A3 $88,344,000 Capital, engineering and constructi

 CECC($/kW) = $126 Capital, engineering and constructi

 B1 = 5% of CECC $4,417,200 Owners costs including "home offic
 B2 = 6% of (CECC + B1) $5,566,000 AFUDC (based on approximately 3% 

 TPC ($) = CECC + B1 + B2 $98,327,200 Total project cost

 TPC ($/kW) = $140 Total project cost per kW
 has a factor = 1.0)

 Lignite=1.07

uctwork, reactor, bypass) island cost

nt preparation cost

modification / SO3 control (bituminous only & > 3 lb/MMbtu)

er fans & auxiliary power modification costs

module cost including retrofit factor

g and construction management costs

stment for 6 x 10 hour shift premium, per diem, etc..

 profit and fees

gineering and construction cost subtotal

gineering and construction cost subtotal per kW

sts including "home office" costs (owners engineering, management, and procurement activities)
sed on approximately 3% per year for a 2 year engineering and construction cycle)

ct cost per kW
GGS SCR Capital Cost Estimate Worksheet Assuming NOx Control at 0.05 lbs/MMBtu

Variable Designation Units Value Calculation

Unit Size A (MW) 700 Input

Retrofit Factor B 1 Input (An "average" retrofit has a factor = 1.0)

Heat Rate C (Btu/kWh) 7588 Input

NOx Rate D (lb/MMBtu) 0.23 Input

SO2 Rate E (lb/MMBtu) 0.15 Input

Type of Coal F PRB Input

Coal Factor G 1.05 Bituminous =1.0, PRB=1.05, Lignite=1.07

Heat Rate Factor H 0.7588 C/10000

Heat Input I (Btu/hr) 5.31E+09 A*C*1000

Capacity Factor J (%) 100 Input

NOx Removal Efficiency K (%) 78.26 Input

NOx Removal Factor L 0.97825 K/80

NOx Removed M (lb/hr) 956 D*I/106

*K/100

Urea Rate (100%) N (lb/hr) 668 M*0.525*60/46*1.01/0.99

Steam Required O (lb/hr) 755 N*1.13

Aux Power P (%) 0.51 0.56*(G*H)0.43; Auxilliary power

Urea Cost 50% wt sol. R ($/ton) 400 Input

Catalyst Cost S ($/m3) 7000 Input

Aux Power Cost T ($/kWh) 0.046 Input

Steam Cost U ($/klb) 4 Input

Operating Labor Rate V ($/hr) 40.6 Labor cost including all benefits

Costs are all based on 2009 dollars

Fixed O&M Cost

 FOMO ($/kW yr) = (1/2 operator time assumed)*2080*V/(A*1000) $0.060 Fixed O&M additional operating la

 FOMM ($/kW yr) = IF A < 500 then $200,000 ELSE $300,000 $0.429 Fixed O&M maintenance material a

 FOM ($/kW yr) = FOMO + FOMM $0.489 Total fixed O&M costs

Variable O&M

 VOMR ($/MWh) = N*R/A/1000 $0.382 Variable O&M costs for urea

 VOMW ($/MWh) = 0.3*(G)2.9*(L)0.71/8760/J*100*S $0.272 Variable O&M costs for catalyst rep

 VOMM ($/MWh) = O*U/A/1000 $0.004 Variable O&M costs for steam

 VOMP ($/MWh) = P*T*10 $0.234 Variable O&M costs for additional 

 VOM ($/MWh) = VOMR + VOMW + VOMM $0.891 Total variable O&M costs
 has a factor = 1.0)

 Lignite=1.07

 additional operating labor costs

 maintenance material and labor costs

&M costs for urea

&M costs for catalyst replacement and disposal

&M costs for steam

&M costs for additional auxillary power required

ble O&M costs