Tamsin Ridge Solar and Storage Project - Project Description
No federal land, funding or federal loan program is involved.
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Northfold Energy Partners, LLC - Confidential
Tamsin Ridge Solar and Storage Project
Project Description, Revision 3. Prepared by Northfold Energy Partners, LLC. June 12, 2023.
1. Overview
The Tamsin Ridge Solar and Storage Project (the Project) is a proposed 120 MW (AC) solar photovoltaic generating facility of approximately 168 MW (DC) with a co-located 60 MW / 240 MWh battery energy storage system (BESS). Northfold Energy Partners, LLC is developing the Project through its project company, Tamsin Ridge Solar, LLC. The Project is in Harrison Township, Carroll County, Ohio, west of State Route 43 and about 4 miles northwest of the Village of Carrollton.
2. Site
The Project Area covers approximately 1,140 acres on 14 parcels held by 9 landowners. The fenced area is approximately 780 acres, in a West Block and an East Block separated by the Sallow Creek valley. Land cover is cropland and hay with woodlots along Sallow Creek and on reclaimed surface-mined ground in the East Block. An existing 138 kV transmission line crosses the West Block, and natural gas gathering pipelines cross Parcels 5, 7 and 10. There are 23 residences within 1,000 feet of the fence.
3. Facility
Single-axis trackers; 40 central inverters of 3.0 MW each; a 34.5/138 kV project substation and the BESS yard (about 6 acres, 60 lithium iron phosphate enclosures) on Parcel 5; underground 34.5 kV collection lines; about 9 miles of gravel access roads; perimeter fencing; and an operations building. Modules carry a hail impact rating and the trackers have an automatic hail stow mode. Structures are designed for an ASCE 7-16 basic wind speed of 115 mph and a 20 psf ground snow load.
4. Interconnection
PJM queue position AH1-931; the interconnection request was submitted on September 24, 2021. The point of interconnection is the proposed Tamsin Ridge 138 kV switching station on the Transmission Owner's Vesper Hill-Ardley 138 kV line, reached by a 0.4-mile 138 kV gen-tie line. PJM issued the Feasibility Study report on April 14, 2022. The position is now in PJM's transition to its reformed interconnection process, and the next study phase has not started.
5. Permitting and schedule
The Project needs a certificate of environmental compatibility and public need from the Ohio Power Siting Board (OPSB). The pre-application conference with OPSB staff was held on March 21, 2023, and the county public meeting required by ORC 303.61 was held on May 11, 2023. The OPSB application is planned for the third quarter of 2023, construction from the first quarter of 2025, and commercial operation in December 2026.
Quote starts. No federal land, federal funding or federal loan program is involved. Quote ends. A U.S. Army Corps of Engineers nationwide permit is expected for one access road crossing of an ephemeral stream.
6. Site control
Option-to-lease agreements cover 12 parcels, a recorded collection line easement covers Parcel 7, and Parcel 11 is not yet under agreement (see the Option and Lease Summary and the Parcel Schedule).
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Comments
No federal land, funding or loans are involved. Main transformer holds about 14,000 gallons of mineral oil, so the substation needs an SPCC plan. One access road crossing of an ephemeral stream is expected under a USACE nationwide permit. The collection easement crosses a Calder Gathering Company gathering line and requires a written crossing agreement.