Connecticut and New York
Dairy Renewable Natural Gas Projects
On-farm anaerobic digestion and gas upgrading
Oakridge, Marks, Lincoln, and Curtin are four projects built to turn dairy manure into renewable natural gas. Oakridge Dairy in Ellington, Connecticut, was the first farm in the SJI and REV LNG program to break ground. [1] [2]
- Dairy projects featured
- 4 farms
- Oakridge digester volume [1]
- 2M gallons
- Oakridge announced facility investment [1]
- $12M
- Lincoln volume per digester [5]
- 2.2M gallons
Oakridge Dairy
Oakridge added a covered digester and gas-upgrading equipment to its manure-handling system. EnviTec reports that the upgraded gas is transported by trailer to a pipeline injection point. [3] [4]
How it fits the farm
Connecticut’s draft air permit describes two paths out of the digester. Biogas goes to the upgrading equipment, while the remaining material goes back to the farm for separation. The farm can reuse the solids as bedding and send the liquid to long-term storage. [3]
Oakridge project team
- Host farm
- Oakridge Dairy [1]
- Project owner
- South Jersey Industries (SJI) [4]
- Development partner
- REV LNG [1]
- Digester equipment and gas upgrading
- EnviTec Biogas USA [4]
My role
I worked as a construction project manager on all four dairy RNG projects.
Site locations
Oakridge Dairy · Ellington, CT
The round digester is visible between the barns and the covered storage lagoon. [3]
Marks Dairy · Martinsburg, NY
NYSEG identified REV LNG as the developer of the Marks Farms project in Lewis County. Its two covered tanks sit near the north end of the farm. [7]
Lincoln Dairy · Fleming, NY
Two 2.2-million-gallon digesters receive manure from nearby barns. EnviTec reports that the upgraded gas feeds directly into the local distribution system. [5]
Curtin Dairy · Cassville, NY
The Cassville facility upgrades biogas on site and sends the finished gas by trailer to a pipeline injection point. [4]
Project records
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SJI and REV LNG · Oakridge construction announcement
Announced investment, digester volume, and project partners.
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SJI Renewable Energy Ventures · Dairy project portfolio
Public project listings for Oakridge, Marks, Lincoln, and Curtin.
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Connecticut DEEP · Oakridge draft air permit
Facility location, digester and gas-upgrading equipment, and material flows.
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EnviTec Biogas USA · Oakridge and Curtin
Project locations, owner, development partner, and supplied equipment.
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EnviTec Biogas · Lincoln Dairy plant profile
Digester sizes, gas upgrading, and the connection to the local gas grid.
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Procore · Marks Dairy construction profile
Construction photograph and REV LNG’s account of the project.
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NYSEG · 2024–25 Winter Supply Plan
Names Marks and Lincoln, identifies their towns, and describes the planned gas connections.
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Connecticut Geodata Portal · Spring 2023 aerial imagery
Oakridge aerial imagery from the Connecticut GIS Office and CT ECO, released under CC0.