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Region Study
End Year		 Submission FK Company Study Area Docket No MSS-Imported
Capacity
Winter		 MSS-Imported
Capacity
Spring		 MSS-Imported
Capacity
Summer		 MSS-Imported
Capacity
Fall		 MSS-Market Share
Results (%) - Winter		 MSS-Market Share
Results (%) - Spring		 MSS-Market Share
Results (%) - Summer		 MSS-Market Share
Results (%) - Fall		 Long-Term
Purchases Inside
BAA ≤ Long-Term Sales		 MSS Pass or Fail w/o
Competing Imports		 PSS- Seller
Installed Capacity		 PSS-Total
Installed Capacity		 PSS-Total
Capacity		 PSS-Total
Capacity
Serving Market		 PSS-Long-Term
Purchases inside
BAA ≤ Long-Term Sales		 PSS-BAA Reserve
Requirement		 PSS-Total
Uncommitted Capacity		 PSS-Average
Daily Peak
Native Load		 PSS-Wholesale
Load		 PSS-Net
Uncommitted Supply		 PSS-Seller
Uncommitted Supply		 PSS Result PSS Pass or Fail
w/o Competing
Imports
Northwest 2020 1538426 NorthWestern Corporation NWMT ER18-2511-000 862.00 817.00 1,184.00 996.00 24.57 31.65 19.27 18.81 No Fail 844.00 2,017.00 2,021.00 3,345.00 No 128.00 991.00 1,600.00 199.00 1,543.00 451.00 Pass Pass
Northwest 2020 1538426 NorthWestern Corporation NWMT ER18-2511-000 862.00 817.00 1,184.00 996.00 24.57 31.65 19.27 18.81 No Fail 822.00 1,934.00 1,937.00 3,235.00 No 128.00 894.00 1,600.00 199.00 1,459.00 416.00 Pass Pass
Northwest 2020 1538426 NorthWestern Corporation NWMT ER18-2511-000 862.00 817.00 1,184.00 996.00 22.42 30.80 19.82 18.70 No Fail 844.00 2,017.00 2,021.00 3,345.00 No 128.00 991.00 1,600.00 199.00 1,543.00 451.00 Pass Pass
Northwest 2020 1538426 NorthWestern Corporation NWMT ER18-2511-000 862.00 817.00 1,184.00 996.00 22.42 30.80 19.82 18.70 No Fail 822.00 1,934.00 1,937.00 3,235.00 No 128.00 894.00 1,600.00 199.00 1,459.00 416.00 Pass Pass
Northwest 2020 1538426 NorthWestern Corporation PACE ER18-2511-000 2,855.00 2,203.00 3,214.00 2,945.00 0.92 0.90 2.84 1.40 Yes Pass 0.00 8,604.00 8,830.00 9,331.00 Yes 501.00 127.00 8,342.00 736.00 2,465.00 140.00 Pass Pass
Northwest 2020 1538426 NorthWestern Corporation PACE ER18-2511-000 2,855.00 2,203.00 3,214.00 2,945.00 0.92 0.90 2.84 1.40 Yes Pass 0.00 8,624.00 8,852.00 9,353.00 Yes 501.00 140.00 8,342.00 736.00 2,487.00 131.00 Pass Pass
Northwest 2020 1538426 NorthWestern Corporation PACE ER18-2511-000 2,855.00 2,203.00 3,214.00 2,945.00 0.98 1.39 3.11 1.29 Yes Pass 0.00 8,604.00 8,830.00 9,331.00 Yes 501.00 127.00 8,342.00 736.00 2,465.00 140.00 Pass Pass
Northwest 2020 1538426 NorthWestern Corporation PACE ER18-2511-000 2,855.00 2,203.00 3,214.00 2,945.00 0.98 1.39 3.11 1.29 Yes Pass 0.00 8,624.00 8,852.00 9,353.00 Yes 501.00 140.00 8,342.00 736.00 2,487.00 131.00 Pass Pass
Northwest 2020 1538426 NorthWestern Corporation WAUW ER18-2511-000 117.00 82.00 133.00 87.00 1.49 10.17 0.00 0.00 Yes Pass 0.00 69.00 101.00 110.00 Yes 9.00 -44.00 151.00 28.00 43.00 6.00 Pass Pass
Northwest 2020 1538426 NorthWestern Corporation WAUW ER18-2511-000 117.00 82.00 133.00 87.00 1.49 10.17 0.00 0.00 Yes Pass 0.00 97.00 138.00 147.00 Yes 9.00 -8.00 151.00 28.00 80.00 14.00 Pass Pass
Northwest 2020 1538426 NorthWestern Corporation WAUW ER18-2511-000 118.00 82.00 130.00 82.00 0.00 10.34 4.27 0.00 Yes Pass 0.00 69.00 101.00 110.00 Yes 9.00 -44.00 151.00 28.00 43.00 6.00 Pass Pass
Northwest 2020 1538426 NorthWestern Corporation WAUW ER18-2511-000 118.00 82.00 130.00 82.00 0.00 10.34 4.27 0.00 Yes Pass 0.00 97.00 138.00 147.00 Yes 9.00 -8.00 151.00 28.00 80.00 14.00 Pass Pass
Southwest 2019 1539085 69SV 8me LLC LDWP ER24-2653-000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Yes Pass 740.00 7,582.00 9,472.00 10,689.00 Yes 477.00 3,108.00 5,019.00 1,799.00 3,108.00 0.00 Pass Pass
Southwest 2020 1539757 El Sol Energy Storage LLC AZPS ER23-2746-000 215.00 1,967.00 2,173.00 1,710.00 4.90 3.90 4.00 4.20 Yes Pass 120.00 5,998.00 10,314.00 10,706.00 Yes 392.00 2,312.00 6,594.00 1,074.00 3,346.00 185.00 Pass Pass
Southwest 2020 1539758 Invenergy Energy Management LLC AZPS ER16-1720-001 215.00 1,967.00 2,173.00 1,710.00 4.90 3.90 4.00 4.20 Yes Pass 120.00 5,998.00 10,314.00 10,706.00 Yes 392.00 2,312.00 6,594.00 1,074.00 3,346.00 185.00 Pass Pass
Northwest 2021 1540195 Idaho Power Company AVA ER97-1481-000 1,145.00 1,034.00 1,315.00 1,099.00 2.53 3.38 0.77 2.08 Yes Pass 0.00 1,962.86 2,474.86 2,641.86 Yes 167.00 448.59 1,770.17 609.83 1,436.33 11.90 Pass Pass
Northwest 2021 1540195 Idaho Power Company AVA ER97-1481-000 1,145.00 1,034.00 1,315.00 1,099.00 2.53 3.38 0.77 2.08 Yes Pass 0.00 1,935.08 2,447.08 2,614.08 Yes 167.00 408.91 1,770.17 609.83 1,408.55 0.00 Pass Pass
Northwest 2021 1540195 Idaho Power Company AVA ER97-1481-000 1,145.00 1,034.00 1,315.00 1,099.00 2.53 3.38 0.77 2.08 Yes Pass 0.00 1,958.21 2,470.21 2,637.21 Yes 167.00 432.04 1,770.17 609.83 1,431.68 0.00 Pass Pass
Northwest 2021 1540195 Idaho Power Company AVA ER97-1481-000 1,145.00 1,034.00 1,315.00 1,099.00 2.40 3.47 0.00 2.11 Yes Pass 0.00 1,962.86 2,474.86 2,641.86 Yes 167.00 448.59 1,770.17 609.83 1,436.33 11.90 Pass Pass
Northwest 2021 1540195 Idaho Power Company AVA ER97-1481-000 1,145.00 1,034.00 1,315.00 1,099.00 2.40 3.47 0.00 2.11 Yes Pass 0.00 1,935.08 2,447.08 2,614.08 Yes 167.00 408.91 1,770.17 609.83 1,408.55 0.00 Pass Pass
Northwest 2021 1540195 Idaho Power Company AVA ER97-1481-000 1,145.00 1,034.00 1,315.00 1,099.00 2.40 3.47 0.00 2.11 Yes Pass 0.00 1,958.21 2,470.21 2,637.21 Yes 167.00 432.04 1,770.17 609.83 1,431.68 0.00 Pass Pass
Northwest 2021 1540195 Idaho Power Company AVA ER97-1481-000 1,145.00 1,034.00 1,315.00 1,099.00 2.10 2.95 0.11 1.80 Yes Pass 0.00 1,962.86 2,474.86 2,641.86 Yes 167.00 448.59 1,770.17 609.83 1,436.33 11.90 Pass Pass
Northwest 2021 1540195 Idaho Power Company AVA ER97-1481-000 1,145.00 1,034.00 1,315.00 1,099.00 2.10 2.95 0.11 1.80 Yes Pass 0.00 1,935.08 2,447.08 2,614.08 Yes 167.00 408.91 1,770.17 609.83 1,408.55 0.00 Pass Pass
Northwest 2021 1540195 Idaho Power Company AVA ER97-1481-000 1,145.00 1,034.00 1,315.00 1,099.00 2.10 2.95 0.11 1.80 Yes Pass 0.00 1,958.21 2,470.21 2,637.21 Yes 167.00 432.04 1,770.17 609.83 1,431.68 0.00 Pass Pass
Northwest 2021 1540209 Idaho Power Company NEVP ER97-1481-000 2,751.17 4,387.20 4,732.50 4,402.00 0.42 0.96 0.23 0.59 Yes Pass 134.00 10,199.33 10,201.08 10,996.08 Yes 661.00 222.78 8,117.48 1,329.52 5,059.68 11.33 Pass Pass
Northwest 2021 1540209 Idaho Power Company NEVP ER97-1481-000 2,751.17 4,387.20 4,732.50 4,402.00 0.42 0.96 0.23 0.59 Yes Pass 134.00 10,196.81 10,198.10 10,993.10 Yes 661.00 208.93 8,117.48 1,329.52 5,057.16 0.00 Pass Pass
Northwest 2021 1540209 Idaho Power Company NEVP ER97-1481-000 2,751.17 4,387.20 4,732.50 4,402.00 0.42 0.96 0.23 0.59 Yes Pass 134.00 10,198.23 10,199.75 10,994.75 Yes 661.00 210.35 8,117.48 1,329.52 5,058.58 0.00 Pass Pass
Northwest 2021 1540209 Idaho Power Company NEVP ER97-1481-000 2,751.17 4,387.20 4,732.50 4,402.00 0.29 0.74 0.00 0.46 Yes Pass 134.00 10,199.33 10,201.08 10,996.08 Yes 661.00 222.78 8,117.48 1,329.52 5,059.68 11.33 Pass Pass
Northwest 2021 1540209 Idaho Power Company NEVP ER97-1481-000 2,751.17 4,387.20 4,732.50 4,402.00 0.29 0.74 0.00 0.46 Yes Pass 134.00 10,196.81 10,198.10 10,993.10 Yes 661.00 208.93 8,117.48 1,329.52 5,057.16 0.00 Pass Pass
Northwest 2021 1540209 Idaho Power Company NEVP ER97-1481-000 2,751.17 4,387.20 4,732.50 4,402.00 0.29 0.74 0.00 0.46 Yes Pass 134.00 10,198.23 10,199.75 10,994.75 Yes 661.00 210.35 8,117.48 1,329.52 5,058.58 0.00 Pass Pass
Northwest 2021 1540209 Idaho Power Company NEVP ER97-1481-000 2,751.17 4,387.20 4,732.50 4,402.00 0.35 0.82 0.03 0.51 Yes Pass 134.00 10,199.33 10,201.08 10,996.08 Yes 661.00 222.78 8,117.48 1,329.52 5,059.68 11.33 Pass Pass
Northwest 2021 1540209 Idaho Power Company NEVP ER97-1481-000 2,751.17 4,387.20 4,732.50 4,402.00 0.35 0.82 0.03 0.51 Yes Pass 134.00 10,196.81 10,198.10 10,993.10 Yes 661.00 208.93 8,117.48 1,329.52 5,057.16 0.00 Pass Pass
Northwest 2021 1540209 Idaho Power Company NEVP ER97-1481-000 2,751.17 4,387.20 4,732.50 4,402.00 0.35 0.82 0.03 0.51 Yes Pass 134.00 10,198.23 10,199.75 10,994.75 Yes 661.00 210.35 8,117.48 1,329.52 5,058.58 0.00 Pass Pass
Northwest 2021 1540215 Idaho Power Company NWMT ER97-1481-000 862.00 817.00 1,184.00 996.00 2.17 2.99 0.64 1.99 Yes Pass 0.00 2,751.37 2,751.37 2,885.37 Yes 134.00 -461.67 1,757.94 151.06 1,260.21 11.16 Pass Pass
Northwest 2021 1540215 Idaho Power Company NWMT ER97-1481-000 862.00 817.00 1,184.00 996.00 2.17 2.99 0.64 1.99 Yes Pass 0.00 2,739.19 2,739.19 2,873.19 Yes 134.00 -485.01 1,757.94 151.06 1,248.03 0.00 Pass Pass
Northwest 2021 1540215 Idaho Power Company NWMT ER97-1481-000 862.00 817.00 1,184.00 996.00 2.17 2.99 0.64 1.99 Yes Pass 0.00 2,745.28 2,745.28 2,879.28 Yes 134.00 -478.92 1,757.94 151.06 1,254.12 0.00 Pass Pass
Northwest 2021 1540215 Idaho Power Company NWMT ER97-1481-000 862.00 817.00 1,184.00 996.00 1.97 2.94 0.00 1.94 Yes Pass 0.00 2,751.37 2,751.37 2,885.37 Yes 134.00 -461.67 1,757.94 151.06 1,260.21 11.16 Pass Pass
Northwest 2021 1540215 Idaho Power Company NWMT ER97-1481-000 862.00 817.00 1,184.00 996.00 1.97 2.94 0.00 1.94 Yes Pass 0.00 2,739.19 2,739.19 2,873.19 Yes 134.00 -485.01 1,757.94 151.06 1,248.03 0.00 Pass Pass
Northwest 2021 1540215 Idaho Power Company NWMT ER97-1481-000 862.00 817.00 1,184.00 996.00 1.97 2.94 0.00 1.94 Yes Pass 0.00 2,745.28 2,745.28 2,879.28 Yes 134.00 -478.92 1,757.94 151.06 1,254.12 0.00 Pass Pass
Northwest 2021 1540215 Idaho Power Company NWMT ER97-1481-000 862.00 817.00 1,184.00 996.00 1.80 2.61 0.09 1.73 Yes Pass 0.00 2,751.37 2,751.37 2,885.37 Yes 134.00 -461.67 1,757.94 151.06 1,260.21 11.16 Pass Pass
Northwest 2021 1540215 Idaho Power Company NWMT ER97-1481-000 862.00 817.00 1,184.00 996.00 1.80 2.61 0.09 1.73 Yes Pass 0.00 2,739.19 2,739.19 2,873.19 Yes 134.00 -485.01 1,757.94 151.06 1,248.03 0.00 Pass Pass
Northwest 2021 1540215 Idaho Power Company NWMT ER97-1481-000 862.00 817.00 1,184.00 996.00 1.80 2.61 0.09 1.73 Yes Pass 0.00 2,745.28 2,745.28 2,879.28 Yes 134.00 -478.92 1,757.94 151.06 1,254.12 0.00 Pass Pass
Northwest 2021 1540220 Idaho Power Company PACW ER97-1481-000 1,241.02 757.23 1,502.65 1,089.83 3.41 3.27 0.85 2.27 Yes Pass 0.00 2,240.91 3,898.38 4,190.38 Yes 292.00 -476.30 3,901.15 275.85 1,096.75 13.88 Pass Pass
Northwest 2021 1540220 Idaho Power Company PACW ER97-1481-000 1,241.02 757.23 1,502.65 1,089.83 3.41 3.27 0.85 2.27 Yes Pass 0.00 2,212.96 3,870.43 4,162.43 Yes 292.00 -515.87 3,901.15 275.85 1,068.45 0.00 Pass Pass
Northwest 2021 1540220 Idaho Power Company PACW ER97-1481-000 1,241.02 757.23 1,502.65 1,089.83 3.41 3.27 0.85 2.27 Yes Pass 0.00 2,227.25 3,884.72 4,176.72 Yes 292.00 -502.71 3,901.15 275.85 1,084.22 0.00 Pass Pass
Northwest 2021 1540220 Idaho Power Company PACW ER97-1481-000 1,241.02 757.23 1,502.65 1,089.83 3.24 3.38 0.00 2.29 Yes Pass 0.00 2,240.91 3,898.38 4,190.38 Yes 292.00 -476.30 3,901.15 275.85 1,096.75 13.88 Pass Pass
Northwest 2021 1540220 Idaho Power Company PACW ER97-1481-000 1,241.02 757.23 1,502.65 1,089.83 3.24 3.38 0.00 2.29 Yes Pass 0.00 2,212.96 3,870.43 4,162.43 Yes 292.00 -515.87 3,901.15 275.85 1,068.45 0.00 Pass Pass
Northwest 2021 1540220 Idaho Power Company PACW ER97-1481-000 1,241.02 757.23 1,502.65 1,089.83 3.24 3.38 0.00 2.29 Yes Pass 0.00 2,227.25 3,884.72 4,176.72 Yes 292.00 -502.71 3,901.15 275.85 1,084.22 0.00 Pass Pass
Northwest 2021 1540220 Idaho Power Company PACW ER97-1481-000 1,241.02 757.23 1,502.65 1,089.83 2.85 2.87 0.12 1.98 Yes Pass 0.00 2,240.91 3,898.38 4,190.38 Yes 292.00 -476.30 3,901.15 275.85 1,096.75 13.88 Pass Pass
Northwest 2021 1540220 Idaho Power Company PACW ER97-1481-000 1,241.02 757.23 1,502.65 1,089.83 2.85 2.87 0.12 1.98 Yes Pass 0.00 2,212.96 3,870.43 4,162.43 Yes 292.00 -515.87 3,901.15 275.85 1,068.45 0.00 Pass Pass

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