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
Energy Storage Integration Council Meeting Open New Window
Portland, Oregon
September 21, 2015

This meeting will feature a plenary session and discussion session to understand the prioritized and emerging technical and business needs of different stakeholders involved in the procurement and deployment of distributed energy storage systems. Discussion will be facilitated by EPRI with support from the Rocky Mountain Institute.
Newsroom Careers EPRI Journal

Product Abstract

Results from Case Studies of Pumped-Storage Plants

Product ID:1023142
Date Published:14-Sep-2012
Sector Name:Power Delivery & Utilization
Document Type:Technical Results
Price:No Charge

This Product is publicly available

   3.98 MB - Adobe PDF (.pdf)


Detailed plant performance analyses were conducted using unit and plant performance characteristics and 1-minute plant operational data from 2008, 2009, and 2010 for five pumped-storage plants. These five case studies encompass three markets (MISO, NYISO, and PJM) and one non-market region (Southeast area). Owners for the five plants include three investor-owned utilities, one state power authority, and one federal power corporation. This report describes results from detailed performance analyses that evaluated reductions in overall plant efficiencies under a variety of operation-related and market-related conditions for the plants. Results from this report show that the non-market operations of pumped-storage plants by vertically integrated utilities resulted in more efficient performance of their plants than the market-based utilities. Opportunities are identified for both market improvements and plant improvements to reduce avoidable suboptimization of pumped-storage plants.

2012 Program 173   Bulk Power System Integration of Variable Generation
  • Generation
  • Conventional hydropower
  • Pumped storage
  • Energy and ancillary services markets
  • Hydro plant optimization
  • Suboptimization

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