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Northeastern Pennsylvania Home to the Largest Renewable Natural Gas Facility in the World


Dunmore, Lackawanna County, PA Archaea Energy Inc., an industry-leading renewable natural gas (“RNG”) company, announced the successful start-up of Project Assai, an RNG facility located at the Keystone Sanitary Landfill in Dunmore, Pennsylvania. Pipeline-quality RNG has been produced and commercial operations were achieved on December 30, 2021. Assai is now the highest capacity operational RNG facility in the world.




Assai was successfully constructed, commissioned, and completed within budget and in under two years, a timeline materially shorter than industry averages for landfill gas to RNG development projects, including projects of much smaller size. Assai has an inlet capacity of 22,500 scfm and combines landfill gas flows from the Keystone Sanitary Landfill and the Waste Management Alliance Landfill. Assai is expected to reduce CO2 emissions by over 200,000 metric tons annually and significantly reduce air pollutants, many by over 90%.


“Thanks to projects like these, Pennsylvania continues to have one of the most diverse energy portfolios in the country. By capturing methane from existing facilities and significantly reducing CO2 emissions and air pollutants, this facility will bring decades of benefits to both consumers and the environment.  Northeastern PA is thrilled to add this resource to our growing and cost-effective utility base.” said John L. Augustine III, Penn's Northeast's President/CEO.


“Completion of Assai is a monumental moment for Archaea,” said Nick Stork, Archaea’s Chief Executive Officer. “I would first like to thank our team. They worked day and night, overcame obstacles, and ignored many voices who said this couldn’t be done, let alone completed safely, under budget, and on an accelerated timeframe not seen before in our industry. I also want to thank the Keystone Sanitary Landfill, their incredible people and ownership. Keystone’s cooperation, vision and world-class operations were critical to the success of the project. I am also thankful for our partnerships with Waste Management, UGI, the Pennsylvania Department of Environmental Protection and our commercial partners, FortisBC Energy Inc., Énergir, L.P., and The University of California System, who have all made meaningful long-term commitments to decarbonization and to the success of this project. Last but not least, I am grateful for the many learnings that came from this project. We self-performed many critical aspects of this project that most would have outsourced. The compounding effects of this knowledge will translate to lower costs and faster timelines for landfill owners and offtake partners across North America. LFG!”


Assai is expected to deliver over 4 million MMBtu of RNG annually at projected flows, methane recovery and uptime, resulting in over $40 million of annual projected EBITDA. The project stands to benefit from long-term gas rights agreements at landfills with decades of capacity and strategically located within growing waste markets. Approximately 80% of the total RNG volumes expected to be produced at Assai have been contracted on a long-term, fixed fee basis with FortisBC Energy Inc., Énergir, L.P., and The Regents of the University of California, for periods of up to 20 years.


Throop Borough Council President Rich Kucharski feels the new facility will help improve emissions coming from the landfill.


“It’s certainly more environmentally friendly,” he said. “We had a presentation from the CEO of Archaea on it and from what they’re saying the gas that will be going into the UGI pipeline will be cleaner than the actual gas UGI supplies. I think it’s a great project.”


Keystone is required by law to capture its waste gases. Prior to Archaea building a facility at Keystone, the landfill sold some of it to PEI Power Corp.’s Archbald Power Station, which has special equipment that can make electricity from less-refined landfill gas. A Chicago company also bought some of it to run a small power plant on Keystone’s site.



Archaea Energy Inc. is one of the largest RNG producers in the U.S., with an industry-leading platform and expertise in developing, constructing, and operating RNG facilities to capture waste emissions and convert them into low-carbon fuel. Archaea’s innovative, technology-driven approach is backed by significant gas processing expertise, enabling Archaea to deliver RNG projects that are expected to have higher uptime and efficiency, faster project timelines, and lower development costs. Archaea partners with landfill and farm owners to help them transform potential sources of emissions into RNG, transforming their facilities into renewable energy centers. Archaea’s differentiated commercial strategy is focused on long-term contracts that provide commercial partners a reliable, non-intermittent, sustainable decarbonizing solution to displace fossil fuels.


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