Investor Presentaiton
L
MegaWatts
1,800
1,600
Appendix 33
Significant Capacity Deficit in Montana
Winter Peak Loads and Capacity Contributions
of Existing and Needed Resources
Peak Load Forecast plus
16% Reserve Margin
1,400
1,200
1,000
Capacity
Shortfall
46%
800
600
400
200
Peak Load
Forecast
Capacity
Shortfall
Targeted Resource Additions to
Without
Fill Need
(Peak Capability)
Resource
Additions
-60%
2018
2019
2020
2021
2022
2023
2024
2025
Needed Resources
2026
Existing Resources
NorthWestern Energy's current resources provide about 755 MW of peaking capacity, which is the energy available
during periods of our customers' highest demand. An additional 645 MW of peaking capacity must currently be
purchased from the market to meet our needs. Without new capacity, the market exposure will increase to about 725
MW by 2025 (including reserve margins).
This need assumes continued development of cost effective demand side management (conservation) and small
distributed generators (net-metering). Meeting peak load with market purchases means being exposed to the market
at the worst possible time - when the market is most volatile and prices are high.
Capability)
Existing Resource (Peak
2027
2028
2029
2030
2031
-Winter Peak Plus 16%
2032
2033
2034
2035
2036
2037
Retail Winter Peak
2038
2039View entire presentation