Energy
Storage Applications
In simple terms, a successfully
deployed energy storage system stores energy to be discharged at the required
time, at the required power rating and the required energy rating (also known
as the discharge duration). The output energy is often in the form of
electricity but can also be in the form of heat. There is great variability in
the discharge characteristics of each energy storage technology. This
variability allows different energy storage devices to be used in a wide array
of applications. Selecting the correct energy storage device involves
categorizing the energy and power requirements of the end user in question to
understand their required energy storage application. Once the desired list of
applications is understood, the energy storage metrics of different devices can
be used to find the correct match for the end user.
Even in a small scale, distributed
energy storage scenario, the end user in question will likely require a
connection to the centralized electric grid. An understanding of the
applications and benefits of energy storage for both a large centralized grid
utility company as well as for a small distributed facility is important when
selecting an energy storage system that meets the overall goal of the smaller
facility. In reviewing the applications of energy storage it is also important
to note that energy storage devices can often be used for multiple
applications. Depending on the device, multiple applications can be
simultaneously addressed or a device can be repurposed to address a new
application (Denholm P. , Ela, Kirby, &
Milligan, 2010) .
The following is a list of some of
energy storage applications. Certainly there are more than what is listed below
(I will make updates from time to time):
Utility Applications:
Application 1: Electric Energy Time-shift or Arbitrage
Application 2: Electricity Generation Deferral
Application 3: Load Following
Application 4: Regulation
Application 5: Reserve support, Blackout and Blackstart
Application 6: Transmission and Distribution Support
Behind the Meter Applications:
Application 7: Time of Use (TOU) Energy CostManagement
Application 8: Demand Charge Management
Application 9: Reliability and Power Quality
Works Cited
Denholm, P., Ela, E., Kirby, B., & Milligan, M.
(2010). The Role of Energy Storage with Renewable Electricity Generation.
Las Vegas: National Renewable Energy Laboratory.
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