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Product Abstract

Results from Case Studies of Pumped-Storage Plants

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

This Product is publicly available. This report or any part of this report may NOT be copied, reproduced, republished, uploaded, posted, transmitted or distributed in any way without EPRI's prior written consent.

   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

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