Moxie Liberty seeks permits for 936-MW gas plant in Pa.

Moxie Liberty LLC of Vienna, Va., is nearing Pennsylvania Department of Environmental Protection approval for a natural gas-fired combined-cycle power plant to produce about 936 MW, with the plant to be located in Asylum Township, Bradford County.

The DEP said in a notice in the July 28 Pennsylvania Bulletin that the project consists of two identical 1 x 1 power blocks, with each block including a combustion gas turbine and a steam turbine. Each combined-cycle process will also include a heat recovery steam generator and supplemental duct burners.

Bradford County is in the northeast part of the state, just south of the New York state line.

Each combined-cycle process will be rated at 468 MW or less. The heat input rating of each combustion gas turbine is 2,890 MMBtu/hr (HHV) or less, and the heat input rating of each supplemental duct burner is equal to 387 MMBtu/hr (HHV) or less.

This application is subject to the Prevention of Significant Deterioration (PSD) regulations, the Nonattainment New Source Review (NNSR) regulations and Best Available Technology (BAT) requirements. The department has determined that the proposed levels of the air contaminant emissions satisfy best available control technology (BACT) and Lowest Achievable Emission Rate (LAER) requirements as well as the department’s BAT requirements. The DEP with this public notice is proposing to approve this permitting.

“The permittee shall construct and operate only one of the two options,” said the notice.

  • The first option involves two Mitsubishi M501GAC lean premix DLN natural-gas-fired combustion turbines (CT) and steam turbines (ST), where each CT and ST train are configured in a single shaft alignment and drive one common electric generator. Each unit will be equipped with gas-fired duct burners (DB) and heat recovery steam generators (HRSG). Each Mitsubishi train will be capable of producing about 468 MW. The maximum heat input rating of each CT is 2,879 MMBtu/hr (high heating value, HHV) and 2,600 MMBtu/hr (lower heating value, LHV). Each DB will have a maximum heat input rating of 387 MMBtu/hr (HHV) and 350 MMBtu/hr (LHV).
  • The second option is two Siemens SGT6-8000H lean premix DLN natural-gas-fired CTs with STs, where each CT and ST train are configured in a single shaft alignment and drive one common electric generator. Each unit will be equipped with gas-fired DBs and HRSGs. Each Siemens train will be capable of producing about 454 MW. The maximum heat input rating of each CT is 2,980 MMBtu/hr (HHV) and 2,685 MMBtu/hr (LHV). Each DB will have a maximum heat input rating of 164 MMBtu/hr (HHV) and 148 MMBtu/hr (LHV).

Moxie Energy has two gas-fired projects in Pennsylvania

The website of Moxie Energy LLC said the company plans to build the natural gas power plant in Asylum Township, Pa., to take advantage of the abundant natural gas resources in the area and the skilled workforce that has developed around the domestic gas production. The power plant will be fueled only by natural gas (no diesel oil back-up), and will not require river water or any other large source of water typically used for cooling needs.

Construction will take about 30 months. “Once completed in mid 2015, the $800+ million investment will provide a significant and steady tax base to the area, 25 to 35 high paying technical and operations jobs, and an ongoing source of community programs,” said the website.

The website said that Moxie Energy, under Moxie Patriot LLC, is also planning a similar gas-fired power project in Lycoming County, Pa.

Moxie Energy’s top managers are:

  • Aaron Samson, the President and founder of Moxie Energy, was a Managing Director for the AES Corp. (NYSE: AES) where he led LNG development efforts throughout the world. Prior to AES, Samson was Vice President of Project Development for Kenetech Energy Systems where he oversaw development efforts associated with U.S. and international projects using natural gas, wind, biomass, and distillate oil technologies.
  • Kent Morton, a Vice President of Moxie Energy, was a Project Director with AES working on the Sparrows Point LNG Project.
  • Christopher Diez is a Vice President of Moxie Energy. Diez has served as Vice President, Project Director, and Project Manager for various AES development teams where he managed development, engineering, and construction efforts for natural gas (including LNG) and wind-powered facilities.
  • Scott Tayor, a Vice President and CFO of Moxie Energy, was previously a Managing Director in the wind and solar groups of AES, among other positions at AES over a 12-year career.
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.