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58 min ago 2 min read
US waste management company Casella Waste Systems (CWST) and French renewable natural gas (RNG) company Waga Energy have officially inaugurated an RNG production plant at the Chemung County Landfill in Elmira, New York.
Operational since January 2026, the plant uses Waga Energy’s Wagabox technology to convert landfill gas into pipeline-quality RNG for injection into the Valley Energy natural gas distribution network.
Waga Energy will own and operate the site for 20 years, after fully financing the construction of the facility, and will share RNG revenues with CWST.
RNG is known as biomethane in markets outside the US.
Ned Coletta, President and CEO of CWST, said, “We made the decision several years ago to…develop these RNG projects at our facilities rather than invest the capital and embark on projects that are outside the scope of our expertise.”
The Chemung facility has ramped up production over the past four months, with the partnership expecting to produce 340,000 MMBtu (100 GWh) of RNG in the first year of operations.
Waga Energy and CWST expect the facility to produce 610,000 MMBtu (179 GWh) of RNG each year once operations reach full scale.
In line with the US Environmental Protection Agency (EPA) guidelines, this is equivalent to lowering carbon dioxide (CO2) emissions by more than 47,000 tonnes.
Waga Energy currently operates 36 RNG production units in France, Spain, Canada, and the US, representing an installed capacity of more than 6.5 million MMBtu (1.9 TWh) per year.
In January 2026, Waga Energy was of CA$15m ($10.8m) from Quebec’s Ministry of Economy, Innovation, and Energy for a biomethane production project.
