Morris Cogeneration plant in Illinois undergoes 11 MW boost in capacity

The Morris Cogeneration LLC facility in Illinois underwent a recent upgrade project that boosted its capacity from 177 MW to 188 MW, the company told the Federal Energy Regulatory Commission in a May 21 filing.

On March 24, Morris Cogeneration had filed with FERC a rate schedule and cost support for its provision of Reactive Supply and Voltage Control from Generation Sources Service (“Reactive Supply Service”) from its 188-MW facility located in Morris, Illinois. On April 24, the commission advised Morris that additional information was required in order to process the filing. One question had to do with why this is a 188-MW plant, when it was listed at 177 MW in its market-based rate authorization and its Updated Market Power Analysis. 

Said the company response: “Prior to 2015, the listed capacity of the Morris generation facility was 177 MW, which is derived by adding the 39 MW nominal design rating for each of the three Frame 6 combustion turbines when the plant was built, i.e. 117 MW, and the 60 MW for the steam turbine, which equals 177 MW. After June 2014, Morris added 7 MW from the installation of TurboPhaseTM Air Augmentation Modules (a gas reciprocating engine that drives a compressor that injects air into the existing gas turbines and increases power output). During the implementation of the TurboPhaseTM Air Augmentation Modules, Morris determined that the firing temperatures of the gas turbines were too low, and as a result, the gas turbine controls and firing temperature were adjusted to give Morris approximately an additional 4 MW of output. So, with the additional 7 MW from the TurboPhaseTM Air Augmentation Modules and the additional 4 MW achieved by adjusting the controls and the firing temperature of the gas turbines. Morris’ output is now 188 MW. Morris was not required to separately report the increased capacity under its market-based rate authority because it is less than 100 MW. Morris will report the change on its next triennial market power update.”

Said the Altantic Power website about this plant: “The Morris facility is a 177 MW natural gas-fired cogeneration facility located on Equistar Chemicals LP‘s (Equistar) chemical plant in Morris, Illinois, near Chicago. The Project commenced commercial operations in 1998. Atlantic Power indirectly owns 100% of the Project. All of the steam and a portion of electricity generated at the facility are sold to Equistar under a long-term energy services agreement which expires in 2023. Equistar, a wholly owned subsidiary of LyondellBasell Chemical Company, produces ethylene and its co-products and derivatives. The Project sells its excess energy into the PJM West market. J.Arons purchases the project’s natural gas requirements at market prices. Atlantic Power operates and manages the Project.”

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.