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NorthwestPower andConservation
Council
NorthwestPower andConservation
Council
Sixth Northwest Conservation & Electric Power Plan
O&M Planning Assumptionsfor Natural Gas Resources
Maury GalbraithNorthwest Power and Conservation Council
Portland, OR
July 17, 2008
NorthwestPower andConservation
Council
NorthwestPower andConservation
CouncilJune 11, 2008 2
Sources of O&M Expense Information
• FERC Form 1: Annual Report of Major Electric Utilities
• Utility Integrated Resource Plans
• Literature Review
• Industry Experts
NorthwestPower andConservation
Council
NorthwestPower andConservation
CouncilJune 11, 2008 3
Comparison of O&M Expense Estimates Combined Cycle Combustion Turbine (2x1)
Fixed ($/kW-yr) Variable ($/MWh) Source
NPCC 5th Plan 10.30 3.30
Idaho Power 2006 IRP 10.30 3.30 NPCC 5th Plan
Portland General 2007 IRP 8.90 2.30 NPCC 5th Plan
Avista Corp 2007 IRP 9.20 2.60 NPCC 5th Plan
Puget Sound 2007 IRP 21.00 3.00 NPCC 5th Plan
PacifiCorp 2007 IRP 9.10 2.40 EPRI TAG
Platts White Paper 2007 12.80 1.50 FERC Form 1
NPPC FERC Form 1 13.40 1.30 FERC Form 1
NorthwestPower andConservation
Council
NorthwestPower andConservation
CouncilJune 11, 2008 4
Comparison of O&M Expense Estimates Simple Cycle Aeroderivative Turbine (LM6000)
Fixed ($/kW-yr) Variable ($/MWh) Source
NPCC 5th Plan 9.30 9.30
Idaho Power 2006 IRP 9.30 9.30 NPCC 5th Plan
Portland General 2007 IRP 0.00 4.50 NPCC 5th Plan
Avista Corp 2007 IRP 9.00 9.20 NPCC 5th Plan
Puget Sound 2007 IRP
PacifiCorp 2007 IRP 26.40 2.40 EPRI TAG
Platts White Paper 2007 ** 2.90 1.20 FERC Form 1
NPPC FERC Form 1 30.80 8.40 FERC Form 1
NERA NYISO ICAP Study 36.70 3.10 S&L
NorthwestPower andConservation
Council
NorthwestPower andConservation
CouncilJune 11, 2008 5
Comparison of O&M Expense Estimates Simple Cycle Frame Turbine
Fixed ($/kW-yr) Variable ($/MWh) Source
NPCC 5th Plan 7.00 4.70
Idaho Power 2006 IRP 7.00 4.60 NPCC 5th Plan
Portland General 2007 IRP 0.00 2.50 NPCC 5th Plan
Avista Corp 2007 IRP 6.90 4.60 NPCC 5th Plan
Puget Sound 2007 IRP 7.00 4.00
PacifiCorp 2007 IRP 5.30 9.90 EPRI TAG
Platts White Paper 2007 ** 2.90 1.20 FERC Form 1
NPPC FERC Form 1 9.40 15.70 FERC Form 1
NERA NYISO ICAP Study 19.00 0.50 S&L
NorthwestPower andConservation
Council
NorthwestPower andConservation
CouncilJune 11, 2008 6
Comparison of O&M Expense Estimates Internal Combustion Engine
Fixed ($/kW-yr) Variable ($/MWh) Source
Platts White Paper 2007 5.20 0.00 FERC Form 1
NPPC FERC Form 1 12.00 6.00 FERC Form 1
NorthwestPower andConservation
Council
NorthwestPower andConservation
CouncilJune 11, 2008 7
FERC Form 1 Data
• Platts O&M White Paper • Piper, Steve and Jason LaDue, “Estimation of Generating Unit O&M
Expenses: Revisiting the ’80/20’ Rule,” Platts White Paper, June 15, 2007.
• Describes mapping of FERC Form 1 line items to fixed and variable O&M expense categories.
• Provides indicative O&M expenses
• Platts “Generation Supply Curve – Historic” Database • Contains FERC Form 1 O&M expense data for 2003-2006
• Requires Platts Energy AdvantageTM license
NorthwestPower andConservation
Council
NorthwestPower andConservation
CouncilJune 11, 2008 8
Platts Mapping of FERC Form 1 Generating Plant Statistics to Fixed and Variable O&M
Form 1 Line No. Form 1 Item Description Platts O&M Category
19 Production Expenses: Oper, Supv, & Engr Fixed
27 Rents Fixed
29 Maintenance Supervision and Engineering Fixed
30 Maintenance of Structures Fixed
31 Maintenance of Boiler Plant Fixed
32 Maintenance of Electric Plant Fixed
33 Maintenance of Misc Steam Plant Fixed
21 Coolants and Water (Nuc Only) Variable
22 Steam Expenses Variable
23 Steam from Other Sources Variable
24 Steam Transferred (Cr) Variable
25 Electric Expenses Variable
26 Misc Steam Power Expenses Variable
28 Allowances Variable
NorthwestPower andConservation
Council
NorthwestPower andConservation
CouncilJune 11, 2008 9
Council Extract of FERC Form 1 O&M Data
• O&M Source = FERC Form 1 Actual
AND Plant Region = WECC
• Number of Observations:
Prime Mover Fixed # Obs. Variable # Obs.
Combined Cycle 45 46
Gas Turbine 178 170
Aeroderivative 22 22
Frame 31 31
IC Engine 29 28
NorthwestPower andConservation
Council
NorthwestPower andConservation
CouncilJune 11, 2008 10
Limitation of FERC Form 1 Data
• Regulated utility reporting (no merchant plants)
• Accounting standards are subject utility interpretation (anomalously high and low cost data)
• Reporting by Plant/Prime Mover combination (masks unit level detail)
NorthwestPower andConservation
Council
NorthwestPower andConservation
CouncilJune 11, 2008 11
Combined Cycle Combustion Turbines
Plant Name Prime Mover YEAR $/kW-yr $/MWh
1 Animas COMB CYC 2003 20.43 4.04
2 Charles Lenzie COMB CYC 2006 0.12
3 Coyote Springs COMB CYC 2003 28.61
4 Coyote Springs COMB CYC 2004 11.32
5 Coyote Springs COMB CYC 2005 20.03
6 Coyote Springs COMB CYC 2006 19.48
7 Coyote Springs II COMB CYC 2003 10.56 0.57
8 Coyote Springs II COMB CYC 2004 16.10 0.38
9 Coyote Springs II COMB CYC 2005 7.99 0.66
10 Coyote Springs II COMB CYC 2006 7.31 1.19
11 Currant Creek COMB CYC 2006 5.47 0.80
12 Encogen NW COMB CYC 2003 19.64 0.70
13 Encogen NW COMB CYC 2004 21.33 1.15
14 Encogen NW COMB CYC 2005 13.61 1.71
15 Encogen NW COMB CYC 2006 5.86 5.45
NorthwestPower andConservation
Council
NorthwestPower andConservation
CouncilJune 11, 2008 12
CCCTs (Continued)
Plant Name Prime Mover YEAR $/kW-yr $/MWh
16 Fort St. Vrain COMB CYC 2003 9.38 0.65
17 Fort St. Vrain COMB CYC 2004 14.62 0.43
18 Fort St. Vrain COMB CYC 2005 5.48 0.35
19 Fort St. Vrain COMB CYC 2006 11.35 0.36
20 Hermiston Generating Co. COMB CYC 2004 4.94 2.45
21 Hermiston Generating Co. COMB CYC 2005 13.15 1.91
22 Hermiston Generating Co. COMB CYC 2006 7.30 2.58
23 Luna Energy Facility COMB CYC 2006 9.24
24 Redhawk 1 & 2 COMB CYC 2005 5.16 1.24
25 Redhawk 1 & 2 COMB CYC 2006 14.00 0.96
26 Santan COMB CYC 2003 25.59 1.75
27 Silverhawk COMB CYC 2006 20.27 0.02
13.00 1.00
NorthwestPower andConservation
Council
NorthwestPower andConservation
CouncilJune 11, 2008 13
Aeroderivative Gas Turbines
Plant Name Prime Mover YEAR $/kW-yr $/MWh
1 Lordsburg (PNM) GAS TURB 2003 16.70 0.01
2 Lordsburg (PNM) GAS TURB 2004 17.90
3 Lordsburg (PNM) GAS TURB 2005 11.30
4 Lordsburg (PNM) GAS TURB 2006 8.43
5 Northeast (WWPC) GAS TURB 2006 10.72
6 Pyramid Generating Project GAS TURB 2004 5.65
7 Pyramid Generating Project GAS TURB 2005 4.98 17.96
8 Pyramid Generating Project GAS TURB 2006 4.83 17.41
9 Sundance (AZPS) GAS TURB 2005 4.15 8.32
10 Sundance (AZPS) GAS TURB 2006 4.64 8.18
11 West Valley City GAS TURB 2003 93.27 4.50
12 West Valley City GAS TURB 2004 84.02 5.11
13 West Valley City GAS TURB 2005 83.40 7.38
14 West Valley City GAS TURB 2006 61.70 4.67
31.00 8.00
NorthwestPower andConservation
Council
NorthwestPower andConservation
CouncilJune 11, 2008 14
Frame Gas Turbines
Plant Name Prime Mover YEAR $/kW-yr $/MWh
1 Bennett Mountain GAS TURB 2005 2.41 1.74
2 Bennett Mountain GAS TURB 2006 2.26 2.79
3 De Moss Petrie GAS TURB 2003 0.82
4 De Moss Petrie GAS TURB 2004 2.07
5 De Moss Petrie GAS TURB 2005 1.24
6 De Moss Petrie GAS TURB 2006 2.15
7 Frederickson (PSPL) GAS TURB 2006 1.26 13.83
8 Limon Generating Station GAS TURB 2004 4.72
9 Limon Generating Station GAS TURB 2005 5.45 35.71
10 Limon Generating Station GAS TURB 2006 5.28 34.62
11 Mountain Home Generation Station GAS TURB 2003 9.52 4.08
12 Mountain Home Generation Station GAS TURB 2004 5.73 6.60
13 Mountain Home Generation Station GAS TURB 2005 5.89 13.06
14 Mountain Home Generation Station GAS TURB 2006 6.43 6.46
NorthwestPower andConservation
Council
NorthwestPower andConservation
CouncilJune 11, 2008 15
Frame Gas Turbines (Continued)
Plant Name Prime Mover YEAR $/kW-yr $/MWh
15 Nevada Sun Peak Project GAS TURB 2003 0.03
16 Rathdrum GAS TURB 2003 32.28 16.03
17 Rathdrum GAS TURB 2004 32.36 49.57
18 Rathdrum GAS TURB 2005 23.50 17.24
19 Rathdrum GAS TURB 2006 2.24 5.51
20 Whitehorn GAS TURB 2003 29.81
21 Whitehorn GAS TURB 2004 21.27 12.78
9.00 16.00
NorthwestPower andConservation
Council
NorthwestPower andConservation
CouncilJune 11, 2008 16
Internal Combustion Engines Plant Name Prime Mover YEAR $/kW-yr $/MWh
1 Boulder Park INT COMB 2003 14.45 9.16
2 Boulder Park INT COMB 2004 13.32 4.77
3 Boulder Park INT COMB 2005 9.76 5.71
4 Boulder Park INT COMB 2006 10.94 4.03
Sub-Average 12.00 6.00
Plant Name Prime Mover YEAR $/kW-yr $/MWh
5 Kings Beach INT COMB 2003 3.69
6 Kings Beach INT COMB 2004 3.25 0.26
7 Kings Beach INT COMB 2005 3.38 0.08
8 Pueblo Airport Industrial INT COMB 2003 11.39 13.06
9 Pueblo Airport Industrial INT COMB 2004 6.12
10 Pueblo Airport Industrial INT COMB 2005 2.18 14.30
11 Pueblo Airport Industrial INT COMB 2006 0.88 11.36
12 Rocky Ford INT COMB 2003 5.25 3.92
13 Rocky Ford INT COMB 2004 8.38
14 Rocky Ford INT COMB 2005 6.66 4.37
15 Rocky Ford INT COMB 2006 7.43 3.75
All-Average 7.00 6.00
NorthwestPower andConservation
Council
NorthwestPower andConservation
CouncilJune 11, 2008 17
Summary of FERC Form 1 Analysis
Prime Mover Fixed ($/kW-yr) Variable ($/MWh)
Combined Cycle 13.00 1.00
Gas Turbine
Aeroderivative 31.00 8.00
Frame 9.00 16.00
IC Engine 12.00 6.00
NorthwestPower andConservation
Council
NorthwestPower andConservation
CouncilJune 11, 2008 18
Comments and Suggestions?