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Retrofitting Fossil Power Plants for Increased Flexibility

[+] Author Affiliations
Nikhil Kumar

Intertek AIM, Sunnyvale, CA

Sundar Venkataraman

GE Energy Consulting, Phoenix, AZ

Debra Lew, Greg Brinkman, David Palchak, Jaquelin Cochran

National Renewable Energy Laboratory, Golden, CO

Paper No. POWER2014-32024, pp. V001T06A001; 9 pages
  • ASME 2014 Power Conference
  • Volume 1: Fuels and Combustion, Material Handling, Emissions; Steam Generators; Heat Exchangers and Cooling Systems; Turbines, Generators and Auxiliaries; Plant Operations and Maintenance; Reliability, Availability and Maintainability (RAM); Plant Systems, Structures, Components and Materials Issues
  • Baltimore, Maryland, USA, July 28–31, 2014
  • Conference Sponsors: Power Division
  • ISBN: 978-0-7918-4608-7
  • Copyright © 2014 by ASME


Increased renewable generation on the grid along with market deregulation has resulted in a significant increase in the cycling of coal and gas-fired power plant. This increase in cycling will result in increased wear-and-tear costs for units that were not traditionally designed for cycling. Asset owners can make operational changes to mitigate the wear-and-tear impact or alternatively retrofit existing units for improved flexibility. With retrofits, these plants can provide increased operational flexibility, or in other words cycle more, but this comes at an initial cost. On the other hand, increased flexibility in terms of faster starts, better turndowns and ramp rates also provides opportunity for the asset owners to recover their costs in the market. This paper evaluates the operational, as well as cost-benefit of retrofitting power plants for flexibility using a portfolio of generation resources in North America.

Copyright © 2014 by ASME



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