Electric Power Research Institute About Us
The Institute
Office Locations

EPRI Summer Seminar

Each year, EPRI meets with executives and experts to discuss industry challenges and opportunities. Summer Seminar has played a crucial role in shaping EPRI’s research portfolio and the future of electricity worldwide.

Our Work Events
DistribuTECH Open New Window
San Diego, CA
February 3-5, 2015

The world's largest and most comprehensive transmission and distribution event, DistribuTECH includes pre-conference Utility University® workshops, networking events, a conference program with more than 300 speakers and an exhibition showcasing cutting-edge products and services from more than 475 companies.

Event Hashtag: #DTECH
Newsroom Careers

Product Abstract

Cost-Effectiveness of Energy Storage in California: Application of the EPRI Energy Storage Valuation Tool to Inform the California Public Utility Commission Proceeding R. 10-12-007

Product ID:3002001162
Date Published:13-Jun-2013
File size:5.14 MB
Sector Name:Power Delivery & Utilization
Document Type:Technical Update
FileType:Adobe PDF (.pdf)
Price:No Charge

This Product is publicly available.


EPRI has developed an innovative methodology for quantifying the value of grid energy storage opportunities. The EPRI Energy Storage Valuation Tool (ESVT) — simulation software developed to support this methodology — enables preliminary economic analysis prior to more resource-intensive analytical efforts. This report describes applications of the methodology and tool to analyze a range of energy storage cases, including different uses, technologies, locations, and future electricity market scenarios. The analyses were performed to inform stakeholders of the California Public Utility Commission (CPUC) regulatory proceeding investigating the cost-effectiveness of energy storage in approximately 30 different cases.

These scenarios covered three different general use cases, including transmission-connected bulk energy storage, short-duration energy storage to provide ancillary services, and distribution-connected energy storage located at a utility substation. Within these use cases, several input sensitivities were tested for their impact on storage cost-effectiveness, including energy storage duration, technology, durability, market scenario, and project start year. The input assumptions were provided by the CPUC technical staff, with support from a core stakeholder working group, including energy storage and utility representatives.

The results of the analyses were reported using a number of technical and economic outputs and summarized in terms of lifetime net present value and breakeven capital cost of energy storage. Under the assumptions provided by the CPUC, the majority of cases returned benefit-to-cost ratios of greater than one, and the majority of cases returned breakeven capital cost of energy storage ranging from $1,000 to $4,000/kW installed. These results represent an early phase of energy storage valuation analysis, quantifying the direct costs and benefits over the lifetime of the energy storage system. The results do not consider indirect impacts on the functioning of the broader electric system or environmental impacts.

2013 Program 94  Energy Storage
  • California Public Utility Commission
  • Energy Storage
  • Energy storage valuation
  • Grid analysis
  • Grid Energy Storage

For further information about EPRI, call the EPRI Customer Assistance Center at (800) 313-3774 or email askepri@epri.com


 Having Trouble Downloading?


Internet Explorer Information Bar

If using Internet Explorer the browser automatically blocks downloads by default, instead displaying an "Information Bar" at the top or bottom of the page.

Click "Download File" on Information Bar if using Internet Explorer 8 or older. If using version 9, click “Save” button on Information Bar and then select “Open” once downloaded.

Pop-up blocker software

You can hold down the CTRL key when selecting Download to bypass your pop-up blocker.

You may also configure your pop-up blocker to allow EPRI.com to open new windows.

Recommended Software

EPRI recommends using the latest version of Adobe Reader for best performance.


 Support Services


EPRI Customer Assistance Center (CAC):
800-313-3774 or 650-855-2121 Option 4

Hours of Operation:
8:00 AM - 7:00 PM Eastern Time (GMT-5)

Order and Conference Center:
800-313-3774 or 650-855-2121 Option 2