In this study, combined PV and battery systems were designed based on typical load profiles for nine commercial and industrial (C&I) end-users. The battery systems were used to manage monthly utility demand charges. Our model optimizes battery capacity and PV charging, with the objective of minimizing monthly peak energy demand charges. We demonstrate system performance within the utility territories of Connecticut Light and Power and California's Pacific Gas and Electric (PG&E). The cross comparison between California and Connecticut illustrates the effects of varying rate structures and solar potential on the value of energy storage systems. Our research demonstrates that adding battery storage is economically viable, without subsidies, at current prices in California. By 2025 battery storage is anticipated to allow for significant economic and operational benefit in California and to reach viability in Connecticut. We find substantial synergies when combining PV and battery, compared to each system separately.
[1]
Lester B. Lave,et al.
Increasing Backup Generation Capacity and System Reliability by Selling Electricity During Periods of Peak Demand
,
2007
.
[2]
S. Ong,et al.
Impacts of Commercial Electric Utility Rate Structure Elements on the Economics of Photovoltaic Systems
,
2010
.
[3]
Matthew J. Culligan,et al.
Impact of Tilt Angle on System Economics for Area Constrained Rooftops
,
2011
.
[4]
P. Gilman,et al.
SAM Photovoltaic Model Technical Reference
,
2015
.
[5]
Eugene F. Brigham,et al.
Corporate Finance: A Focused Approach
,
2002
.
[6]
Bing Liu,et al.
U.S. Department of Energy Commercial Reference Building Models of the National Building Stock
,
2011
.