Energy storage system meets peak demand in summer

Is peaking capacity a potential market for energy storage?

Peaking capacity represents a much larger potential market for energy storage. Peaking capacity historically has been provided by a combination of simple-cycle gas turbines, gas- and oil-fired steam plants, and reciprocating engines using gas or liquid fuels (FERC 2015).

Why does storage vary by year?

The variations by year can be attributed to changes in load patterns and load growth. To be useful for future projections, as well as to compare the effectiveness of storage across years, we normalize the results by the annual peak demand in each year.

Does increasing PV deployment reduce net peak demand?

Here we show the impact of increasing levels of PV deployment on the ability of 4-hour storage to reduce the net peak demand. Figure A-1 shows this progression from zero to 20% PV in 5% increments.

What is the peak demand reduction threshold for 4 hour storage?

The peak demand reduction threshold for 4-hour storage is 4,249 MW at zero PV, then declines to 1,937 MW at 5% PV, and increases to 4,935 MW at 10% PV, 8,462 MW at 15% PV, and 10,372 MW at 20% PV. This example, clearly illustrates how the narrowing of the peak at higher PV penetration levels is synergistic with 4-hour storage. Zero PV.

Will a 1 MW power plant reduce peak demand?

The credit is shown as a percentage, meaning a 1-MW device would be expected to reduce the net peak demand by 1 MW at 100%, and by 0.5 MW at 50%. We also highlight two points in the figure.

Is California a leader in energy storage & PV?

California is the U.S. leader in deployment of both energy storage and PV. It has mandated increasing deployment of storage (CPUC 2013) and variable generation resources such as wind and solar (Green and Crume 2017).