1. Lancaster “Project”
Tracy Rolstad
Avista Transmission System Planning

2. Lancaster Request
Avista has requested BPA evaluate two options (Lines and Loads Request)
Alt A: Loop into Boulder—Rathdrum 230 kV
Alt B: Loop into Beacon—Rathdrum 230 kV

3. Lancaster Loop In Five Alternatives Studied by Avista Status Quo
Alt A: Loop into Boulder—Rathdrum 230 kV
Alt B: Loop into Beacon—Rathdrum 230 kV
Alt C: Noxon—Lancaster 230 kV into Rathdrum
Alt D: 230 kV trunk line from Rathdrum

4. Basic One Line Western MT Hydro Cabinet Gorge 500 kV to Grand Coulee
And Montana
Libby
Lancaster
Bell
Hot
Springs
Noxon
Rathdrum
Boulder
Beacon

6. Lancaster-Noxon 230 kV
Bell-Lancaster 230 kV
Beacon-Rathdrum 230 kV
Bell-Taft 500 kV
Boulder-Rathdrum 230 kV

7. Bell-Taft 500 kV
Lancaster-Noxon 230 kV
Cabinet-Rathdrum 230 kV
Beacon-Rathdrum 230 kV
Boulder-Rathdrum 230 kV

8. Superior Option Alternative A
Bring Lancaster into Boulder—Rathdrum 230 kV line
“Intercepts” westbound energy before it travels east through the Bell—Beacon complex
Increases use of Boulder and Rathdrum stations
Decrease use of Beacon and Bell stations
Losses are reduced equally for AVA and BPA
Perhaps as much as 2 to 3 MW always
Technically a “win” for both parties

9. Parameter
Status Quo
Alt A
Alt B
Alt C
Alt D
Total System Losses MW MW MW MW MW
NW Area Losses MW MW MW MW MW
AVA Owner Losses (MW)
76.71 MW
72.46 MW
72.76 MW
72.40 MW
72.85 MW
AVA Owner Losses (MVAr)
  MVAr
  MVAr
  MVAr
  MVAr
  MVAr
Bell 500/230 kV MW MW MW MW MW
Bell 230/115 kV MW MW MW MW MW
Beacon 230/115 kV #1 MW MW MW MW MW
Beacon 230/115 kV #2 MW MW MW MW MW
Boulder 230/115 kV #1 MW MW MW MW MW
Boulder 230/115 kV #2 MW MW MW MW MW
Rathdrum 230/115 kV #1
70.32 MW
77.64 MW
77.28 MW
78.09 MW
77.46 MW
Rathdrum 230/115 kV #2
90.80 MW MW MW MW MW
Beacon-Bell #4 230 kV MW MW MW MW MW
Beacon-Bell #5 230 kV MW MW MW MW MW
Beacon-Boulder 230 kV MW
60.88 MW
89.78 MW
79.82 MW
84.69 MW
Beacon-Rathdrum #2 230 kV MW MW
N/A MW MW
Boulder-Rathdrum 230 kV MW MW MW MW
Boulder-Lancaster 230 kV MW
Lancaster-Rathdrum 230 kV
37.27 MW
Beacon-Lancaster 230 kV MW MW
Beacon throughflow (MW) MW MW MW MW MW
Bell throughflow (MW) MW MW MW MW MW
Boulder throughflow (MW) MW MW MW MW MW
Lancaster throughflow (MW) MW MW MW MW MW
Rathdrum throughflow (MW) MW MW MW MW MW

10. Disclaimers Actually study is performed by BPA
BPA results are presumably definitive
BPA study is not yet complete
Station expansion will be required
Implies all associated issues such as property acquisition, environmental issues, outages, etc