Grafton Hydro LLC filed a Feb. 2 application at the Federal Energy Regulatory Commission for a three-year preliminary permit for the proposed Lebanon-Mascoma water power project, to be located on the Mascoma River in Grafton County, New Hampshire.
A preliminary permit allows a developer exclusive time to look at project feasibility and to potentially work up a license application.
There are two potential developments that will be studied under the requested preliminary permit:
- DEVELOPMENT No. 1 – The primary resource to be studied under the requested permit is in the two thousand foot long reach of the Mascoma River near the downtown section of the City of Lebanon, between the point at which NH Route 120 crosses the Mascoma River and the river’s confluence with Great Brook. An optimal development of the 60-plus feet of head in this reach might support an installed capacity in excess of 1.5 MW and an annual production of 6 GWh or more.
- DEVELOPMENT No. 2 – The development of the resource at Mascoma Lake Dam will be studied as one which would likely work best in tandem with the higher-head Development No. 1. The resource at the Mascoma Lake Dam may support an installed capacity of 300 kW to 400 kW, yielding an average annual energy of approximately 500 MWh.
Because this project will likely be under 3 MW of total installed capacity, it is probable that interconnection will be with the local distribution lines owned and operated by National Grid and/or Eversource Energy, the application noted.
A project contact is: Thomas Tarpey, Grafton Hydro LLC, 55 Union Street, 4th Floor, Boston, MA 02108, (617) 340-2251.