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17 min ago 2 min read
Decatur Hills Landfill and French biomethane firm Waga Energy have officially opened a 203,000 MMBtu renewable natural gas (RNG) facility in Greensburg, Indiana, which began operations in July.
The plant captures previously flared gas released by decomposing waste at the landfill and upgrades it into RNG, which is then sold to U.S. Energy for delivery to end markets through the local gas grid.
It uses the French-headquartered firm’s Wagabox technology to purify the landfill gas through membrane filtration, which removes impurities, and cryogenic distillation to separate methane from oxygen, nitrogen, and CO2.
At full capacity, it can process up to 1,000 standard cubic feet per minute of landfill gas to produce around 5.9GWh of RNG, which Waga Energy said can avoid over 15,800 tonnes of carbon dioxide (CO2)-equivalent per year.
Waga Energy financed and built the facility and will own and operate it for at least 20 years.
It comes as the firm expands its North American presence. Earlier this year, it launched two other plants in and , and announced plans to develop a 180GWh RNG facility in .
The firm’s US CEO, Guénaël Prince, recently told H2 View the opportunity for US RNG production was “huge.”
“There are around 2,700 landfills in the US, and together they produce enormous amounts of methane. Yet much of that gas still isn’t properly recovered,” he said.
According to the American Biogas Council, domestic RNG output rose 24% in 2025 to 225.6 MMBtu.
