40 years ago, when I first started in the solid waste business, futurists predicted we would be mining landfills for potential energy someday. Now, in 2025, all these years later, not only are we doing it, but the Renewable Natural Gas (RNG) industry continues to experience significant growth, driven by the utilization of feedstocks such as landfill waste, wastewater, and agricultural residues.
Market Growth and Projections
According to research by Ravina Pandya of Coherent Market Insights, the global RNG market was valued at approximately $14.03 billion in 2024 and is projected to reach $24.23 billion by 2031, reflecting a compound annual growth rate (CAGR) of 8.1% during this period.
Feedstock Contributions
Landfill Gas: Landfills are a major source of RNG, accounting for around 45% of the total supply in 2024. The decomposition of municipal solid waste in landfills produces methane, which can be captured and converted into RNG.
Agricultural Waste: Anaerobic digestion of agricultural residues, such as manure and crop byproducts, contributes to RNG production. The agricultural waste segment is expected to grow at a CAGR of 12.4% from 2024 to 2031, indicating a strong upward trend.
Wastewater Treatment: Wastewater treatment plants also produce biogas, which can be upgraded to RNG. While specific growth figures for this feedstock in 2024 are not detailed, the sector is recognized for its potential in contributing to RNG supply.
Regional Insights
In the United States, the number of operating RNG projects has been increasing steadily. By 2023, there were 135 agricultural RNG projects and 102 landfill RNG projects, reflecting a growing commitment to utilizing organic waste for energy production.
US EPA
The future looks even more promising for growth across all sectors with landfill, wastewater, and agricultural feedstocks playing pivotal roles in expanding RNG production and contributing to the transition toward sustainable energy sources. If you need more information regarding your specific projects please contact us.
