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Sargent & LundyLLC

Project # 12301-003PQA Study

Technology Spreadsheet

Efficiency /Heat Rate for New Coal-Fired Power Plants

Subcritical

December 15, 2008

Revision 1

Page 5

Subcritical Subcritical Subcritical Subcritical Subcritical Subcritical Subcritical Subcritical Subcritical

Base set-up for meetin g Target BACT

limit s for NOX & SO2UNITS

400MW -

Subcritical PC,

Bituminous

400MW -

Subcritical PC,

Lignite

400MW -

Subcritic al PC, PRB

600MW -

Subcritical PC,

Bituminous

600MW -

Subcritical PC,

Lignite

600MW -

Subcritic al PC, PRB

900MW -

Subcritical PC,

Bituminous

900MW -

Subcritical PC,

Lignite

900MW -

Subcritic al PC, PRB

Capital costs $1,000

Direct & Indirect Costs $1000 $1,000 1,624,527 1,693,870 1,519,360 2,071,959 2,160,403 1,937,827 2,642,629 2,755,430 2,471,549

$/kW Capital Cost based on net output $/net-kw 4,523 4,760 4,186 3,844 4,045 3,555 3,190 3,357 2,951

Capital Costs

Costs in year 2008 dollars $1,000 1,624,527 1,693,870 1,519,360 2,071,959 2,160,403 1,937,827 2,642,629 2,755,430 2,471,549

Fixed O&M Costs

Fixed O&M Costs $1,000 12,467 12,467 12,467 15,216 15,216 15,216 19,070 19,070 19,070

ariable M osts yrLimestone Reagent $1,000 1,504 781 0 2,246 1,167 0 3,447 1,791 0Lime Reagent for Dry-FGD $1,000 0 0 719 0 0 1,074 0 0 1,648Activated Carbon $1,000 0 1,073 976 0 1,602 1,457 0 2,459 2,237

Water $1,000 238 295 191 385 385 385 579 579 579Bottom Ash Disposal/Sale $1,000 442 1,679 290 659 2,507 432 1,012 3,848 664Fly ash sale/Disposal $1,000 1,762 6,710 1,154 2,632 10,021 1,724 4,039 15,381 2,645Gypsum sale/Disposal $1,000 3,094 1,614 305 4,621 2,411 565 7,093 3,700 867AC Waste Disposal $1,000 0 10 9 0 15 13 0 22 20Ammonia $1,000 469 373 360 527 557 537 810 855 825SCR-Catalyst Replacement $1,000 673 673 673 1,010 1,010 1,010 1,515 1,515 1,515Bags for Baghouse $1,000 210 242 231 336 380 346 516 583 531SO2 Allowances $1,000 662 559 539 988 835 805 1,517 1,281 1,236

NOx Allowances $1,000 1,985 2,096 2,022 2,965 3,131 3,020 4,551 4,805 4,636Other $1,000 1,416 1,403 1,431 2,125 2,106 2,149 3,266 3,235 3,302Sulfur Sale $1,000 N/A N/A N/A N/A N/A N/A N/A N/A N/A

Total $1,000 11,550 17,507 8,900 18,495 26,125 13,517 28,345 40,056 20,705

Variable O&M Costs $/MWh 3.55 5.96 3.11 3.82 5.93 3.15 3.81 5.91 3.14Total Non-Fuel O&M Cost $1,000 24,017 29,974 21,367 33,711 41,341 28,733 47,415 59,126 39,775Total Non-Fuel O&M Cost $/MWh 8.48 10.68 7.47 7.93 9.82 6.69 7.26 9.14 6.02