Clean Energy Opens RNG Production Facility
Clean Energy's newest RNG production facility will process up to 60,000 gallons of manure each day and convert it into an estimated 165 MMBtus of fuel every day.

Ash Grove is Clean Energy's fifth renewable natural gas facility to come online in the last nine months.
Photo: Clean Energy
.
Clean Energy Fuels announced that it has completed its latest renewable natural gas (RNG) production facility at Ash Grove Dairy in Lake Benton, Minnesota. The facility is now producing pipeline quality RNG and injecting it into the interstate natural gas pipeline grid.
When at full capacity, the facility is projected to supply up to 480,000 gasoline gallon equivalent (GGEs) of negative carbon-intensity RNG annually. The fuel will provide Clean Energy’s stations with clean-burning fuel for its commercial transportation fleet customers.
Dairy Farm Biogas
Located on a 55-acre site, Ash Grove Dairy is a multigenerational dairy farm home to more than 2,000 milking cows which produce milk, cheese, yoghurt and now clean RNG. The freestanding one-digester facility will process up to 60,000 gallons of manure each day, capture its harmful methane and prevent it from entering the atmosphere. This biogas will be converted into an estimated 165 MMBtus of RNG every day.
The project, financed through one of Clean Energy’s production joint ventures and developed by Dynamic Renewables, totaled $22 million and has now passed necessary gas testing and is officially producing ready-to-use RNG. Clean Energy is in the process of filing the applications to generate federal and state environmental credits.
“Ash Grove is our fifth renewable natural gas facility to come online in the last nine months”, said Clay Corbus, senior vice president at Clean Energy, “It’s always rewarding to see our efforts come to fruition when we begin injecting. With the growing demand for RNG, and interest really starting to take off as fleets realize how effective and immediate they can fuel cleanly, the RNG produced at Ash Grove will directly help with reducing carbon emissions across the country.”
More Fuel Smarts

Cummins Adjusts 2027 Engine Rollout After EPA Proposal
The engine maker will gradually introduce its new Model Year 2027 diesel engines while continuing to offer current models during the transition, citing the EPA's proposed emissions rule changes.
Read More →
EPA Proposal Could Ease 2027 Truck Costs and Buying Uncertainty
The proposal doesn't change the tougher NOx standard, but it would revise key implementation requirements that manufacturers say have driven up costs and complicated fleet purchasing decisions.
Read More →
Cummins, Paccar Ease DEF Derates After EPA Guidance
Updated diesel engine software gives truck operators more time to address emissions-system issues while staying compliant with EPA emissions standards.
Read More →
Maintenance in the Messy Middle Part 3: Biodiesel
Biodiesel can reduce emissions, improve fuel-system lubricity and use existing diesel infrastructure. But NACFE’s Messy Middle maintenance report says fleets must actively manage storage, cold-weather operation, filters and oil drain intervals to avoid problems.
Read More →
Enhance Fleet Performance with High-Efficiency Auxiliary Power Units
Drive sustainable cost savings while increasing driver comfort during short- and long-haul logistics operations.
Read More →
Maintenance in the ‘Messy Middle’ Part 2: Renewable Diesel Fuel
NACFE's latest Messy Middle Powertrain Service & Maintenance report says renewable diesel gives fleets an opportunity to reduce carbon emissions without changing trucks, fueling infrastructure or maintenance practices. But technicians still need to understand several important operational differences.
Read More →
The Diesel Engine Enters NACFE’s ‘Messy Middle’
NACFE’s new Messy Middle Powertrain Service & Maintenance report says keeping modern diesel engines running now depends as much on software, diagnostics and data as traditional mechanical service.
Read More →
DTNA Software Update Gives Truckers More Time Before DEF Derates Take Effect
The changes reflect EPA guidance aimed at reducing downtime caused by emissions-system faults while maintaining compliance requirements.
Read More →
New Agentic Predictive Maintenance Report Demonstrates How Degraded Aftertreatment Systems Waste Fuel
Questar analyzed a large mixed-class fleet and discovered it was wasting as much as $30 in fuel per vehicle, per day, because of mechanically degraded aftertreatment systems.
Read More →
New York City's Microhub Project is Delivering Results
Trucking, last-mile delivery companies, and environmental advocates like what they are seeing so far with New York's microhub program.
Read More →
