Casella Waste Systems and Waga Energy Bring Third RNG Facility Online at McKean Landfill

RUTLAND, Vt., Sept. 03, 2026 (GLOBE NEWSWIRE) -- Casella Waste Systems, Inc. (Nasdaq: CWST), a regional solid waste, recycling and resource management services company in the Eastern United States, and Waga Energy, a global expert in the production of Renewable Natural Gas (“RNG”) from landfills, announced the start of operations of the RNG production facility at the McKean Landfill in Mount Jewett, Pennsylvania.

The McKean facility is the third to come online this year, following the successful commissioning of facilities at the Chemung County Landfill and the Hyland Landfill. Together, the three projects complete the partnership agreement signed in 2023.

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“Bringing this facility online at our McKean landfill is another important step in our efforts to recover more value from the materials we manage,” said Ned Coletta, President and CEO of Casella Waste Systems, Inc.

“Our partnership with Waga Energy has always been focused on collaborating to leverage each other’s strengths, and it’s extremely gratifying to see the third facility come online and producing as anticipated.”

The facility uses Waga Energy's patented WAGABOX® technology to upgrade landfill gas into pipeline-quality RNG. With 2,000 SCFM of installed processing capacity, McKean can generate up to 407,000 MMBtu (120 GWh) of renewable gas annually. Production will ramp up progressively as landfill gas volumes increase at the site.

“The commissioning of the McKean WAGABOX® unit is a strong testament to the commitment and execution capabilities of the Casella and Waga Energy teams,” said Guénaël Prince, Chief Executive Officer of Waga Energy Inc.

“This project also demonstrates the strength of a partnership model that creates long-term value for both partners by transforming landfill gas into a reliable source of renewable energy.”

The RNG produced on-site is injected directly into the National Fuel Gas network, supplying the region with a renewable alternative to fossil natural gas. The project is expected to avoid 31,000 tons of CO₂-equivalent emissions each year, according to U.S. Environmental Protection Agency standards.

Under the terms of the agreement, Waga Energy fully funded the construction of each facility and will own and operate each of them for 20 years, while Casella and Waga Energy share the revenue generated from RNG sales.

About Casella Waste Systems, Inc.

Casella Waste Systems, Inc., headquartered in Rutland, Vermont, provides resource management expertise and services to residential, commercial, municipal, institutional and industrial customers, primarily in the areas of solid waste collection and disposal, transfer, recycling and organics services in the eastern United States. For more information, visit www.casella.com.

About Waga Energy

Waga Energy produces competitively priced Renewable Natural Gas (RNG, also known as biomethane) by upgrading landfill gas using a patented purification technology called WAGABOX®. The RNG produced is injected directly into the gas grids that supply individuals and businesses, providing a substitute for natural fossil gas. Waga Energy currently operates 36 RNG production units in France, Spain, Canada and the USA, representing an installed capacity of more than 6.5 million MMBtu (1.9 TWh) per year. To date, Waga Energy has 19 RNG production units under construction worldwide. Each project initiated by Waga Energy contributes to the fight against global warming and helps the energy transition. Waga Energy is listed on Euronext Paris (FR0012532810 – EPA: WAGA).