PUMPED STORAGE HYDRO ABSAROKA ENERGY · PUMPED STORAGE HYDRO ABSAROKA ENERGY NorthWestern Energy...
Transcript of PUMPED STORAGE HYDRO ABSAROKA ENERGY · PUMPED STORAGE HYDRO ABSAROKA ENERGY NorthWestern Energy...
PUMPED STORAGE HYDRO
ABSAROKA ENERGY
NorthWestern Energy Resource Technology
Forum
November 29, 2017
2
Storage Technology Comparison
Source: Bloomberg New Energy Finance Database “The future of Energy Storage Technologies and Policy”
99% of Storage is Pumped Hydro
TYPICAL UTILITY DISPATCH MODES
LEAST COST – prioritize the dispatch of the least cost
resources to serve the load.
ENVIRONMENTAL – prioritize the most
environmentally friendly resources to serve the load.
SYSTEM RELIABILITY – prioritize the dispatch to
provide the most stability and security to the system.
COMPLICATIONS - must run facilities, PURPA
contracts, run-of-river hydro
7
8
Source: Energy + Environmental Economics “Gordon Butte Pumped Storage:
Colstrip 1&2 Replacement Analysis”
13
ANCILLARY SERVICES■ Inertial response
■ Governor response, frequency response, or primary frequency control
■ Frequency regulations, regulation reserve, or primary frequency control
■ Flexibility reserve
■ Contingency spinning reserve
■ Contingency non-spinning reserve
■ Replacement / supplemental reserve
■ Load following
■ Load leveling / energy arbitrage
■ Generating capacity
■ Reduced environmental emissions
■ Integration of variable energy resources (VERs)
■ Reduced cycling and ramping of thermal units
■ Other portfolio effects
■ Reduced transmission congestion
■ Transmission deferral
■ Voltage support
■ Improved dynamic stability
■ Black start capability
■ Energy security