Dynegy seeks permitting for upgrade of Washington power plant in Ohio

The Ohio Environmental Protection Agency issued for comment a draft Feb. 22 Title V air permit revision covering a planned upgrade project at the Washington Energy Facility, a natural gas-fired combined cycle plant in Beverly, Ohio.

Dynegy Washington II LLC has requested a [significant permit modification] of the Title V renewal permit for the Washington Energy Facility issued final on April 24, 2014,” said the agency. “The SPM of the Title V permit is needed to address the changes to the combustion turbines that are resulting from Dynegy’s implementation of its Advanced Gas Path project that will allow a 3% improvement in heat rate and increased electrical output of approximately 7%. The project will result in increases in fuel input capacity for the combustion turbines that result in an increase in allowable emissions from those sources, and these increases need to be updated in Dynergy’s operating permit before the company is able to operate the modified sources.”

The affected emissions units are:

  • P001 – Combined cycle unit consisting of a nominally-rated 207 MW General Electric 7FA natural gas-fired, dry low-NOx (DLN) combustion turbine and a heat recovery steam generator (HRSG) equipped with natural gas-fired duct burners (supplemental firing) nominally rated at 587 MMBtu/hr controlled by selective catalytic reduction (SCR).
  • P002 – Combined cycle unit consisting of a nominally-rated 207 MW GE 7FA natural gas-fired, DLN combustion turbine and a HRSG equipped with natural gas-fired duct burners (supplemental firing) nominally rated at 587 MMBtu/hr controlled by SCR.

General Electric (NYSE: GE) announced this past December that Dynegy (NYSE: DYN) is installing GE hardware and software to upgrade and modernize four of its power plants. Dynegy is upgrading the plants to enhance their reliability and increase their output by a total of 210 MW.

For the projects, GE will supply a total of eight sets of Advanced Gas Path (AGP) upgrades and GE’s OpFlex Peak Fire software for the fleet of 7FA.03 gas turbines at Dynegy’s Hanging Rock Energy Facility and Washington Energy Facility in Ohio and the Fayette Energy Facility in Pennsylvania. In addition to those recently-acquired stations, Dynegy also is upgrading its Independence Energy Facility in Oswego, New York, with four sets of AGP hardware to boost output and enhancing compressor performance and reliability through the installation of new compressors and stators. 

“Dynegy is always looking for ways to economically increase output, reliability and efficiency at our power stations while upholding our commitment to safety and environmental responsibility,” said Marty Daley, executive vice president, Dynegy, at the time. ”Through our collaboration with GE, Dynegy is upgrading four of our facilities with some of the latest technologies to achieve these goals.”

With GE’s OpFlex Peak Fire, power plant capacity can be expanded by boosting baseload output by up to 8%, enabling customers to capture higher peak demand revenue. The company’s full suite of OpFlex software solutions can help reduce fuel consumption to lower operating costs at part-load conditions, extend turndown while maintaining emissions compliance to improve availability, increase output to capture new revenue opportunities, decrease start time and fuel costs to economically respond to cyclical power demands and shorten outages and increase availability through an intelligent control system.

About Barry Cassell 20414 Articles
Barry Cassell is Chief Analyst for GenerationHub covering coal and emission controls issues, projects and policy. He has covered the coal and power generation industry for more than 24 years, beginning in November 2011 at GenerationHub and prior to that as editor of SNL Energy’s Coal Report. He was formerly with Coal Outlook for 15 years as the publication’s editor and contributing writer, and prior to that he was editor of Coal & Synfuels Technology and associate editor of The Energy Report. He has a bachelor’s degree from Central Michigan University.