Duke plans switch from oil to gas as startup fuel for Miami Fort

Duke Energy Ohio told the Public Utilities Commission of Ohio in a Feb. 5 filing that it proposes to construct a 12-inch diameter natural gas pipeline of about 1.3 miles in length in Hamilton County, Ohio, to serve the Miami Fort power plant.

The new pipeline will be located adjacent and west of the existing CG25 gas pipeline (6-inch pipe to be abandoned). The project will increase the gas volume supplied to the Miami Fort Generating Station for the purpose of routine start-up operations of the coal-fired boiler units. The plant’s boiler start-up system is planned to be converted from fuel oil to natural gas.

The Miami Fort Generating Station is located 1.1 miles to the south of the project area. The pipeline will have a maximum allowable operating pressure of 500 pounds per square inch gauge (PSIG). The normal operating pressure range of the new pipeline will be 350 to 450 PSIG. The existing pipeline (CG25) was installed In 1964 and continues in operation supplying gas to the station and other customers in the project vicinity.

At the northern terminus of the project area, the proposed pipeline will tie-in with the existing CG25 pipeline. The remainder of the CG25 pipeline, which will remain in place and in operation, turns to the east to run parallel to U.S. Route 50 and the railroad north of the project. At the southern terminus, the proposed pipeline will be connected with the existing CG25 pipeline just south of the inflection in the pipeline and north of the southern tree-line.

Construction is planned to begin in May 2015, with the anticipated to be completed and in service in November 2015.

Miami Fort is a nominal 640-MW facility with three coal/steam units located in North Bend, Ohio, about 20 miles west of Cincinnati.

The Kentucky Public Service Commission on Jan. 12 approved Duke Energy Kentucky to amend its operating agreement with affiliate Duke Energy Miami Fort LLC related to a planned sale of part of the Miami Fort plant. In August 2014, Duke Energy Kentucky had sought PSC authorization to enter into an agreement which amends its current operating agreement with Duke Energy Miami Fort. This is related to the operation of the coal-fired Miami Fort Unit 6 (MF6) owned by Duke Energy Kentucky and operated by Duke Energy Miami Fort in conjunction with Miami Fort Units 7 and 8 (MF7 and MF8), which are majority owned by the unregulated Duke Energy Commercial Asset Management, another subsidiary of Duke Energy (NYSE: DUK).

The PSC order noted: “Duke Kentucky states that when it acquired MF6 in 2003, it expected to operate the unit for 17 years, until approximately 2020. However, as a result of federal environmental regulations, particularly the Mercury and Air Toxics Standards (‘MATS’) rule, MF6 will likely be retired early. Duke Kentucky expects to retire the unit by June 1, 2015. In anticipation of the early retirement, Duke Kentucky applied for and recently received approval to acquire Dayton Power and Light Company‘s 31 percent interest (186 megawatts) in the East Bend Unit 2 Generation Station in which it already owned a 69 percent interest.”

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.