Hardin Wind LLC, a wholly-owned subsidiary of EverPower Wind Holdings, applied April 8 at the Ohio Power Siting Board for an amendment to an existing site certificate so it can uprate the size of one of the possible wind turbines for its up-to 300-MW project.
Hard Wind holds a certificate issued in 2014 to construct a wind facility, called the Scioto Ridge Wind Farm, consisting of up to 105 wind turbines, along with access roads, electrical interconnect, construction staging areas, operations and maintenance facilities, and a collection substation, to be located in Lynn, McDonald, Roundhead, and Taylor Creek townships in Hardin County, and Richland and Rushcreek townships in Logan County.
The board approved a first amendment to the certificate in November 2015 consisting of minor changes to a meteorological tower, a collector substation, seven access roads and twelve collection lines.
The project was originally approved for up to 172 turbine sites with the final number of installed turbines dependent on the MW capacity of the final turbine model selected for the project. Since the original approval, the applicant has provided notice to the board of dropping 67 turbine sites, leaving only 105 approved turbine sites for this project.
Through this April 8 application, Hardin Wind is proposing a capacity increase to the already-approved Gamesa G114 turbine model. The manufacturer of that turbine model has successfully made technological improvements to the turbine, including its gearbox, allowing the capacity to increase from 2 MW to 2.5 MW. Importantly, the G114 turbine’s dimensions including rotor diameter and hub height remain the same. Both turbines will have a 93 meter hub height with a rotor diameter of 114 meters. The 2.5 MW version of the G114 model has the same operational maximum sound power output as the 2 MW version of the G114 model. The only change to the project, therefore, is the use of the G114 turbine at a 2.5 MW capacity rather than the 2 MW design.
Because this application only seeks board approval for a capacity rating increase (2 MW to 2.5 MW for the G114 model), no other aspects of the approved project are being modified. All approved turbine sites remain unchanged as well as the location of the project’s collector substation, access roads and collection lines. Of the currently approved turbines, the Vestas V117 has the highest nameplate capacity at 3.3 MW and if selected would result in a 91-turbine project (300 MW). The approved turbines with the lowest nameplate capacity are the General Electric 100 and GE 103 at 1.7 MW and if selected would result in a 105-turbine project (179 MW). As with the already approved G114 2 MW turbine, selection of the G114 2.5 MW turbine would also result in a 105-turbine project (263 MW).