Harrison Power Transmission (HPT) recently filed with the Ohio Power Siting Board (OPSB) an application for a certificate of environmental compatibility and public need for the Harrison Power 138-kV Transmission Line Project in Harrison County, Ohio.
According to the application, HPT, a joint venture company comprised of Jingoli Power and Harrison Power LLC (HPL), is proposing to build the double-circuit, 138-kV line with the sole purpose of delivering electricity generated by the proposed Harrison Power Project (referred to as the generating facility) to the regional power grid.
The generating facility is a proposed natural gas-fired, combined-cycle (CCGT) electric generating facility to be located in the Village of Cadiz in Harrison County. HPT added in its application that the generating facility is addressed in a separate application submitted to the OPSB in September 2017.
Electricity generated by the generating facility would be delivered to the electrical grid across the 138-kV HPT Line and connecting to the existing American Electric Power (NYSE:AEP) 138-kV Nottingham substation, located in Athens Township about 4.5 miles to the southwest of the proposed generating facility.
HPT added that the HPT Line would consist of the new 138-kV conductor and associated towers, which would be used to convey electricity from the proposed on-site switchyard (HPL switchyard) for the proposed generating facility to the power grid. The new double-circuit, 138-kV line from the generating facility would tie into the Nottingham substation, the company said, adding that an additional 138-kV breaker-and-a-half bay would be built at the Nottingham substation to receive the two 138-kV circuits from the facility.
That includes installing three additional 138-kV breakers, extending the two 138-kV buses, and starting a new string, the company said, noting that installing associated protection and control equipment, 138-kV line risers, SCADA, and 138-kV revenue metering would also be required.
The HPL switchyard would be located adjacent to the generating facility, within the facility’s security fence perimeter. The point of interconnection (POI) into the power grid would be the existing 138-kV Nottingham substation owned by AEP, HPT added.
A preferred and alternative right of way (ROW) for the line corridors have been evaluated, HPT said, adding that the preferred ROW traverses about 4.5 miles of land for which easements would be purchased in Cadiz and Athens townships, connecting the generating facility to the Nottingham substation. A total of 30 tower structures are shown in the preliminary design along the 4.5-mile preferred and alternate ROWs, HPT said, adding that the structures would range in height from about 80 feet to 120 feet above ground.
In an effort minimize environmental impact associated with the HPT Line, the company said that it proposes to locate the HPT Line adjacent to the existing ROW corridor for an existing transmission line and natural gas pipeline for about 3.4 miles.
The area surrounding the HPT Line is dominated by forest and pasture land, HPT said, adding that no residences occur within the study area for the HPT Line; about 90% of the study area is comprised of reclaimed land that was formerly strip-mined.
Temporary impacts to land used during construction of the HPT Line could include damage to pastures, fences, gates, and/or temporarily blocking access to pasture land, the company said. However, construction impacts would be temporary in nature, followed by site restoration in accordance with the terms of each land lease agreement, and would be confined to the properties of participating landowners, HPT said.
Discussing ecological impacts, the company said that no unique habitat areas were identified within the study area for the HPT Line, and no specific species were identified by the Ohio Department of Natural Resources or U.S. Fish and Wildlife Service, with the exception of the Indiana bat and northern long-eared bat that potentially occur within that range.
HPT added that tree clearing would be minimized and restricted to occur only from Oct. 15 through March 31, in order to avoid the potential for impact to those summer tree-roosting species.
No cultural features, such as cemeteries or historic structures, would be directly affected by the HPT Line, HPT said, adding that no properties over 50 years old were identified within the study area for the line.
Among other things, HPT said that the schedule for construction of the line is based on commencement of commercial operation of the generating facility by May 2021, in order to meet anticipated demand within the PJM Interconnection marketplace. Therefore, the line must be available in time to support first fire and performance testing of the generating facility. HPT added that to meet that schedule, it requests issuance of the certificate by late spring 2018 to support commercial and financing activities in 3Q18 and 4Q18.