Author: SAIC and TetraTech

Date Created: Received from SAIC on 1/20/2011. Date Modified: 3/31/2011 Purpose: This file contains new capacity estimates and cost equations to estimate costs associated with this new capacity.

File Contents: Worksheet Contents Notes Contains information about the file. Capacity Allocation Contains new capacity estimates. Cost Equations Contains cost equations.

Input Files: External data used in calculations/analysis: New Unit & Repowering Costs 1-19-11xlsx.xlsx (not linked)



### FileInfo 1 of 4

### New Unit Costs for Repowering and New Added Units

Costs and Generating Output Reduction Equation Units

### Coal (42% Efficient)Combined

Cycle ( 57% Efficient) Nuclear

(33.5% Efficient)
GPM/MW 

### 390 200 680 Capital Cost - Repowering (CC) CC = MWS x Constant Dollars

### $60,060 $30,800 $104,720 Capital Cost - New Unit with New Intake (CC) CC = MWS x Constant Dollars 

### $0 $0 $0 Fixed O&M Cost (OMF) OMF = MWS x Constant Dollars 

### $366 $188 $639 Variable O&M - Chemicals (OMC) OMC= MWS x Constant Dollars 

### $151 $77 $262 Variable O&M - Pump & Fan Power (OMV) OMV= MWS x Constant MW 

### 0.0077 0.0040 0.0134 Energy Penalty -Heat Rate (EP) Non-nuclear EP=MWS x Constant MW 

### 0 0 0 Energy Penalty -Heat Rate (EP) Nuclear EP=MWS x Constant MW 

### 0 0 0 Repowering assumes unit generation is sized such that existing intake can be used for once-through in baseline Coal efficiency is based on average of super-critical and unltra-critical coal.



### Items highlighted are revised from 1-19-11 version

Cost Equations 2 of 4Coal Combined Cycle Nuclear* Non-Phase I Phase Factor 30% 30% NA Multiply this factor times new capacity to get capacity subject to new unit designation Non-Phase IBaseline NonCompliance Factor 50% 50% 50% Multiply this factor times new capacity subject to new unit designation to get capacity that will have compliance costs
Repowering Factor 10% 85% 100% Assumed percentage of capacity with compliance costs that get repowering capital costs * Nuclear Extended Uprate capacity will be
Example Capacity Calculations

Plant typeProjected

New/ Repowered Capacity Non-Phase ITotal Noncompliant New Capacity Total Noncompliant Repowered Capacity Total Noncompliant Added Unit Capacity MW MW MW MW MW Annual Average Coal 3573 1072 536 54 482 Annual Average Combined Cycle 1491 447 224 190 34 Annual Average Nuclear 1938 1938 969 969 0

Nuclear Extended Uprates Using summer capacity data at http://www.eia.doe.gov/cneaf/nuclear/page/operation/statoperation.html The average nuclear generating unit has a capacity = 969MW/Unit Assume extended uprates/yr based on EIA projections = 2Units A review of CWS type and capacity data in Master shows OT = 52% CCRS = 37% Combination = 9% Other = 2% Use 50% as a conservative estimate of existing Non-CCRS capacity

Capacity Allocation 3 of 4

### Final

Created by SAIC 1-20-11 Includes revisions to capital costs presented in the fraft version dated 1-19-11 Capital cost estimates for added units = $0 is based on cases where a new intake is required to meet added flow requirement Analysis showed that costs for new intake costs are comparable to cooling towers.

Notes 4 of 4