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From Landfill Gas to Renewable Energy: The Modern Approach
Discover how modern landfills reduce the impact of landfill waste by capturing gas and converting it into usable energy that helps power our communities.Byline: BTB Editor
March 16, 2026 / Time to read: 5 minEach year, the average American disposes of more than 2,000 pounds of waste and recycling, according to the
While we’re all rooting for a world with less waste, the reality remains: Landfills manage around 50% of our municipal solid waste (MSW) disposal, according to the most recent
Fast forward to today’s landfills, thoughtfully designed to help ensure less waste goes to waste. Thanks to a process called
Interested in learning more about landfill innovations? Read on to discover how far we’ve come in landfill engineering plus how we plan to improve long-term landfill management even more.
Inside Today’s Engineered Landfills
Modern landfills do much more than just collect trash. They’re cutting-edge facilities, intricately engineered to manage odors and protect groundwater while capturing gas emissions to produce renewable energy.
Several important components make up a modern landfill:
Protective Layers
Layers of protective liners — made of geosynthetic clay and thick plastic — cover the ground to prevent contaminants from seeping into the surrounding soil.
Leachate Management
A liquid called leachate forms in landfills when:
- Rain or melting snow soaks through waste
- Pressure from piled-up waste squeezes out liquids already present in discarded trash
- Liquid releases from waste decomposition.
Today’s landfills carefully manage this liquid to prevent it from seeping into groundwater, flowing into nearby bodies of water or harming plants and animals.
A network of pipes and pumps — paired with strategic slopes inside the landfill — capture the leachate and route it to large tanks, where it’s either treated on site or sent to a wastewater treatment plant.
Waste Coverage
To minimize odors and windblown debris, modern landfills compact and cover waste on a daily basis. Once a landfill reaches capacity, it’s sealed permanently with a final, multi-layered cover, which safeguards the surrounding environment.
After a landfill closes, it’s monitored for a minimum of 30 years to ensure the structural integrity of the cover and the surrounding area is safe. The land can often be repurposed into wind or solar energy fields, recreational facilities, public green spaces, preserves and more.
Biogas Extraction
As organic waste decomposes in landfills, it produces biogas — a combination of methane and carbon dioxide. If left alone, these greenhouse gases would release directly into the atmosphere.
Instead, a sophisticated system of pipes, pumps and wells captures biogas so it can be reused or safely destroyed, significantly reducing its environmental impacts.
Garbage in, Green Energy Out
Today’s landfills are highly engineered, with multiple environmental systems in place to protect communities and the environment. By implementing smart solutions to harness valuable energy potential, modern landfills put the decomposition of trash to good use.
To learn more about our approach to LFGTE, check out our
