Clean Energy Infrastructure & Sustainability Solutions
ENVEST PROJECT PHOTO:    SOUTHGATE RENEWABLES
Envest
Envest
Bioenergy Project Profile
Southgate Renewables
Dundalk, Ontario, Canada
Market:
Bioenergy
Commissioning:
Q4 2026
Challenge
Treat 73,000 tonnes/year of source separated organics to produce renewable natural gas
Solutions
Anaerobic digestion
Biogas upgrading
Organic fertilizer
Output
200,000
GJ / Year
RNG
65K
Tonnes / Year
organic fertilizer
Southgate Renewables is a facility currently under development in Dundalk, Ontario for the processing and conversion of source separated organics (SSO) into biogas which is then upgraded to renewable natural gas (RNG). The facility will recycle 73,000 tonnes/year of SSO from "green bin" programs from municipalities throughout Ontario.

The SSO will be anaerobically digested in two 4,200 m³ tanks over 30 days. Digestion creates two key products; biogas and digestate. The biogas, a mixture rich in methane and carbon dioxide, will be polished and converted to RNG using a Biogas Upgrading System (BUS).

RNG generated by the Facility will be injected into the Enbridge Inc. natural gas distribution network and used as a renewable alternative to heating homes and businesses. The digestate is further processed to produce an organic fertilizer that is used by local farmers to offset chemical fertilizer consumption.

Southgate Renewables, through the diversion of organic residuals from landfills, generation of renewable natural gas, and production of fertilizer from waste, is a leader in the realization of the circular economy.
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CASE STUDIES
Balfour Energy
Balfour Energy
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Seacliff Energy
Seacliff Energy
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Seacliff Energy was one of the first facilities of its kind in North America when it was initially commissioned in 2011. The facility recycles 110,000 tonnes/year of organic residuals from agricultural, commercial, and municipal sources.
Doral Energy
Doral Energy
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Doral Energy is a biodiesel and glycerin producer that is strategically located in Doral, Florida, with a production capacity of up to 10 million gallons per year (MMGY) of biodiesel. It is a zero-waste facility that can process a wide range of feedstocks to produce biodiesel and high purity glycerin as a by-product.
Seacliff RNG
Seacliff RNG
BIOENERGY PROJECT
Seacliff RNG is a facility currently under development in Leamington, Ontario for the conversion of biogas produced from the anaerobic digestion of organic residuals into pipeline quality renewable natural gas (RNG) for injection into the Enbridge Inc. natural gas distribution network.
Southgate Renewables
Southgate Renewables
BIOENERGY PROJECT
Southgate Renewables is a facility currently under development in Dundalk, Ontario for the processing and conversion of source separated organics (SSO) into biogas which is then upgraded to renewable natural gas (RNG). The facility will recycle 73,000 tonnes/year of SSO from "green bin" programs from municipalities throughout Ontario.
Voisey's Bay Wind
Voisey's Bay Wind
DISTRIBUTED ENERGY PROJECT
The Voisey's Bay Wind project is being developed in partnership with Vale S.A., the world's largest producer of nickel, at their Voisey's Bay Mine located in Northern Labrador. The goal of the project is to provide Vale with cost-effective renewable electricity and also reduce the carbon footprint of the mining operation by displacing diesel fuel use.

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