496 US Dairy Farms Turn Manure Into Clean Energy

Dairy farmers across America have found a brilliant way to power homes while solving one of agriculture's messiest challenges.

Nearly 500 dairy farms now capture energy from cow manure using biogas systems that turn waste into renewable electricity and natural gas. The technology has exploded since 2020, with farms nearly tripling their investment to almost $4 billion.

Here's how it works. Instead of storing manure in open lagoons, farmers use anaerobic digestion to capture methane gas before it escapes into the atmosphere. That captured biogas either powers homes directly or gets upgraded into renewable natural gas that works just like regular natural gas.

The numbers tell an impressive story. These 496 farms process manure from 2.5 million dairy cows, handling more than 16 billion gallons every year. Together they produce enough energy to power 680,000 homes annually, nearly every household in Idaho.

Just this year, 38 farms added biogas capture systems. Texas, Idaho, and Wisconsin led the charge, accounting for more than half of the $800 million invested in 2025 alone.

The benefits reach far beyond energy production. These systems create natural fertilizer that's easier for crops to absorb, produce animal bedding, and eliminate the strong odors that affect nearby communities. Farmers turn a liability into multiple revenue streams while being better neighbors.

The environmental impact matters too. Current systems prevent about one million tons of methane from entering the atmosphere each year. That's equal to taking 5.9 million cars off the road.

The Ripple Effect

Rural communities gain the most from this quiet revolution. Nearly $4 billion flowing into farm country creates construction jobs, technical positions, and ongoing maintenance work. Farmers strengthen their operations financially while contributing to America's clean energy goals.

The potential for growth remains enormous. Only 14 percent of eligible dairy farms have adopted the technology. About 2,955 additional farms with 500 or more cows could support biogas systems tomorrow.

If those farms joined in, they'd produce enough additional renewable energy to power 1.4 million more households. That would more than double current biogas production while preventing even more methane emissions.

Patrick Serfass from the American Biogas Council sees this as farmers embracing smart technology. "These projects represent major investments in rural America while helping dairy farmers turn manure into valuable renewable energy and natural fertilizer," he said.

The growth proves that environmental solutions and economic opportunity can work hand in hand, one farm at a time.