DOE International Energy Storage Database (beta)
SDG&E-Greensmith Li-ion Energy Storage System Demonstration
Technology Type
Lithium Ion Battery
Rated Power (kW)
50
Duration at Rated Power (HH:MM)
1:40
Description
As part of an EPRI collaborative research and development (R&D) project to evaluate the performance and reliability of a variety of grid-connected Li-ion battery technologies, San Diego Gas & Electric (SDG&E) installed a 50 kW / 82 kWh Greensmith lithium-iron-phosphate distributed energy storage system (DESS) at the utility’s test facility. For this overarching collaborative demonstration, EPRI’s Energy Storage Program (P94) and Distributed Renewables Program (P174) are working in partnership with select utility members to investigate PV-battery integration capabilities. Serving as a “host” utility to EPRI’s supplemental demonstration initiative, SDG&E installed a Greensmith DESS in a grid-connected configuration in June 2011 and has been conducting operating evaluations of the unit over the past 6 months.
Testing and operating evaluation conducted by SDG&E encompasses exercising the DESS’s various modes of operation, which include:
- Constant power charge/discharge schedule;
- Peak shaving; and
- PV smoothing.
Project Status
Status
Operational
Siting
Location
San Diego
,
California
United States
United States
ISO/RTO
CAISO
Utility
San Diego Gas and Electric
Utility Type
Investor Owned
Grid Interconnection
Secondary Distribution
Paired Grid Resource
Solar PV
Ownership &
Value Chain Partners
Value Chain Partners
Ownership Model
Third-Party-Owned
Equity Owner 1
Electric Power Research Institute (EPRI)
Equity Owner 1 Percentage
100%
Energy Storage Technology Provider
Greensmith Energy Management Systems
Power Electronics Provider
Greensmith Energy Management Systems
Integrator Company
SDG&E
Cost & Performance
Performance
• System roundtrip AC efficiency: ~85% • PCS efficiency: ~95%
CAPEX ($)
$114,000.00
Benefits & Incentives
Benefit Stream 1
Renewables Capacity Firming
Benefit Stream 2
Onsite Renewable Generation Shifting
Benefit Stream 3
Renewables Energy Time Shift
Benefit Stream 4
Distribution upgrade due to solar
Benefit Stream 5
Load Following (Tertiary Balancing)
Research Partner
Research Institution
EPRI
Research Description
SDG&E has been testing the battery unit since June and recently completed its 6-month evaluation period. It has successfully tested and demonstrated nearly all of the battery’s modes, with the exception of determining whether the unit can receive commands remotely through a Modbus connection. Note: Because no working PV system existed on-site, testing of the DESS’s PV ramp rate control mode of operation was conducted using virtual PV system data.
Metadata
Record Created
2012-06-25 09:38 PM UTC
Last Updated
2012-06-29 05:02 PM UTC
