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1311027
NorthWestern Corporation
NWMT Sensitivity Analysis
2020 C001789
Study Parameter Winter(MW) Spring(MW) Summer(MW) Fall(MW) Study Parameter Reference
Seller and Affiliate Capacity (owned, controlled or under LT contract)
Seller Installed Capacity 665.00 677.00 690.00 622.00 Wkp-Exh GH-3 (Derated Capacity) Wkp-Exh GH-3 (Derated Capacity) Wkp-Exh GH-3 (Derated Capacity) Wkp-Exh GH-3 (Derated Capacity)
Seller Remote Capacity 0.00 0.00 0.00 0.00
Seller LT Firm Purchases From Inside 423.00 408.00 392.00 402.00 Wkp-Exh GH-3 (Derated Capacity) Wkp-Exh GH-3 (Derated Capacity) Wkp-Exh GH-3 (Derated Capacity) Wkp-Exh GH-3 (Derated Capacity)
Seller LT Firm Purchases From Outside 0.00 0.00 0.00 0.00
Seller LT Firm Sales 0.00 0.00 0.00 0.00
Seller Seasonal Planned Outages 32.00 46.00 56.00 115.00 NorthWestern share of outages NorthWestern share of outages NorthWestern share of outages NorthWestern share of outages
Seller Uncommited Capacity Imports 0.00 0.00 0.00 0.00 Wkp-Import Allocations Wkp-Import Allocations Wkp-Import Allocations Wkp-Import Allocations
Capacity Deductions
Study Area Average Peak Native Load 1,586.00 1,408.00 1,497.00 1,342.00 Wkp-Load Summary Wkp-Load Summary Wkp-Load Summary Wkp-Load Summary
Amount of Average Peak Native Load Attributable to Seller 900.00 748.00 893.00 822.00 PRIV-NWEN Load PRIV-NWEN Load PRIV-NWEN Load PRIV-NWEN Load
Amount of Average Peak Native Load Attributable to Non-Affiliates 686.00 660.00 604.00 520.00
Study Area Reserve Requirements 128.00 115.00 115.00 99.00 Wkp-Reserves Summary Wkp-Reserves Summary Wkp-Reserves Summary Wkp-Reserves Summary
Amount of Study Area Reserve Requirements Attributable to Seller 87.00 75.00 79.00 68.00 PRIV-NWEN Reserves PRIV-NWEN Reserves PRIV-NWEN Reserves PRIV-NWEN Reserves
Amount of Study Area Reserve Requirements Attributable to Non-Affiliates 41.00 40.00 36.00 31.00
Non-Affiliate Capacity (owned, controlled or under LT contract)
Non-Affiliate Installed Capacity 1,192.00 1,160.00 1,109.00 1,131.00 Wkp-Generation Summary, less Row A Wkp-Generation Summary, less Row A Wkp-Generation Summary, less Row A Wkp-Generation Summary, less Row A
Non-Affiliate Remote Capacity 4.00 4.00 3.00 4.00 Wkp-Generation Summary Wkp-Generation Summary Wkp-Generation Summary Wkp-Generation Summary
Non-Affiliate LT Firm Purchases from Inside 0.00 0.00 0.00 0.00
Non-Affiliate LT Firm Purchases from Outside 487.00 487.00 582.00 582.00 Wkp-NWMT Submitttal 1 and 2 Wkp-NWMT Submitttal 1 and 2 Wkp-NWMT Submitttal 1 and 2 Wkp-NWMT Submitttal 1 and 2
Non-Affiliate LT Firm Sales 423.00 408.00 392.00 402.00 Offset Row B Offset Row B Offset Row B Offset Row B
Non-Affiliate Seasonal Planned Outages 23.00 32.00 37.00 83.00 Wkp-Outages less Row D Wkp-Outages less Row D Wkp-Outages less Row D Wkp-Outages less Row D
Non-Affiliate Uncommitted Capacity Imports 862.00 817.00 1,184.00 996.00 Wkp-SILs Summary, less Row E Wkp-SILs Summary, less Row E Wkp-SILs Summary, less Row E Wkp-SILs Summary, less Row E
Supply Calculations
Total Competing Supply 1,372.00 1,328.00 1,809.00 1,677.00
Seller Uncommitted Capacity 69.00 216.00 54.00 19.00
Total Seasonal Uncommitted Capacity 1,441.00 1,544.00 1,863.00 1,696.00
Seller Market Share 4.79 13.99 2.90 1.12
Result (0 for Fail, 1 for Pass) 1 1 1 1
Total Imports 862.00 817.00 1,184.00 996.00
Seller Percent of SIL 0.00 0.00 0.00 0.00
Non-Affiliate Percent of SIL 100.00 100.00 100.00 100.00
SIL Value 862.00 817.00 1,184.00 996.00 Wkp-SILs Summary Wkp-SILs Summary Wkp-SILs Summary Wkp-SILs Summary
SIL Limit Exceeded (0 for No, 1 for Yes) 0 0 0 0


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