Automotive Fleet
MenuMENU
SearchSEARCH

California Dairy Using Cow Waste to Produce Fuel to Power Trucks

TULARE, CA --- At the World Agricultural Fair, representatives of Hilarides Dairy announced the company is converting cow waste into fuel to power trucks and generators while minimizing pollution and diversifying energy sources.

by Staff
February 23, 2009
2 min to read


TULARE, CA ---At the World Agricultural Fair, representatives of Hilarides Dairy announced the company is converting cow waste into fuel to power trucks and generators while minimizing pollution and diversifying energy sources.

Rob Hilarides, the dairy owner, received a $600,000 grant from the California Air Resources Board's Alternative Fuel Incentive Program, which subsidizes projects facilitating greater use of non-petroleum fuels.

"It's energy projects like this that will reduce greenhouse gas emissions and get us off our dependency of foreign oil," said Air Resources Board Chairman Mary Nichols. "It also addresses sources of long-term air and water pollution problems."

Dairy farm owner Rob Hilarides converted two heavy-duty diesel trucks to run on clean-burning bio-methane produced from his cows' manure. Using an anaerobic-lagoon digester that processes the run-off of nearly 10,000 cows, the project generates 226,000 cubic feet of bio-gas per day and enough fuel to run two heavy duty trucks that make daily runs. This has reduced the dairy's diesel consumption by 650 gallons a day. Hilarides said he intends to convert five pick-up trucks to use the same fuel.

The project is the result of a public-private partnership aimed at encouraging the use of renewable bio-methane produced from the waste of food processing and dairies. In June 2006, California's legislature allotted $25 million in grants to encourage the integration of alternative fuels into California's market. Projects from the grants are now coming online and examples can be seen throughout the state.

The Hilarides project was supported by state officials because the process reduces volatile organic compounds and greenhouse gases, generates compressed natural gas, an alternative to diesel, and minimizes two sources of the valley'’s air pollution problem.

More Green Fleet

A close up of the right front of a red Tesla in front of a blurred cityscape background.
Green FleetJuly 1, 2026

Stop Remarketing Electric Vehicles Like Gas Cars

The advantages and attributes of electric vehicles are upending the traditional remarketing cycle, requiring fleet sellers to rely on new factors and approaches detailed below.

Read More →
Yellow Slate pickup truck on a platform.
Green Fleetby Martin RomjueJune 26, 2026

Slate Debuts Colorful, Unique EV Models

A recent media and client event, studded with electric vehicles dressed up on platforms, planted a new position for the manufacturer in the wider EV market. Fleets will find cost-saving advantages.

Read More →
Yellow Slate Fastback on a raised platform in a warehouse.
Green Fleetby Martin RomjueJune 25, 2026

Slate Electric SUV, Pickup Switchable Model Aims For Light-Duty Fleets

Everything about this EV is counterintuitive and understated, making it stand out from the crowd.

Read More →
Ad Loading...
Rendering of electric vehicles charging beneath a solar-panel canopy, illustrating Inspiration Mobility Group’s acquisition of Electrada assets to expand commercial fleet electrification services.
Green Fleetby News/Media ReleaseJune 17, 2026

Inspiration Mobility Acquires Key Electrada Assets

Inspiration Mobility Group has acquired select assets of Electrada, adding the fleet electrification provider's team, technology, and charging infrastructure development capabilities to its energy management business.

Read More →
wheel geotab image
SponsoredJune 1, 2026

Turning Connected Vehicle Data Into Decisions That Matter

Fleet leaders have more data than ever, but turning that data into clear, actionable decisions remains a challenge. This white paper shows how leading organizations are using connected vehicle data to improve safety, reduce costs, and optimize fleet performance. Learn how to turn insight into action across your fleet.

Read More →
fleetio coast pay
SponsoredMay 29, 2026

Are You Tracking Your Fleet's True Total Cost of Ownership?

Bobit Business Media surveyed 190 fleet professionals and found that while most fleets are tracking costs, fragmented systems and data gaps are keeping true TCO visibility out of reach. With rising pressure to control spend in an increasingly volatile environment, the gap between what fleets think they know and what the data actually shows is wider than you might expect. See how your peers are managing costs today and where the industry still has room to improve.

Read More →
Ad Loading...
SponsoredMay 15, 2026

Hybrids: Electrification Without the Challenges

For fleet managers, fuel is one of the biggest line items in the budget — and it's one hybrids can shrink without changing how your people work. Download the eBook to see the numbers, understand the technology, and get a step-by-step guide to making the switch.

Read More →
Sketch of chassis cab truck.
Green Fleetby Chris BrownMarch 9, 2026

Startup ZMD Motors Developing Electric Conversion for Ram 5500 Work Trucks

Detroit-based company says it has begun early development of a system to convert internal combustion Ram 5500 chassis-cab trucks to electric power.

Read More →
EV charging symbol
Green Fleetby Chris BrownFebruary 12, 2026

U.S. EV Adoption Is Climbing, but Commercial and Passenger Markets Diverge

New industry group data revealed that light-duty electric vehicle sales are hitting record market share and volumes, while commercial EV volume dipped. What’s driving the fluctuations?

Read More →
Ad Loading...
A side view of the yellow, blue, and red Slate Auto electric pick-up truck and SUV
Upfittingby Martin RomjueDecember 8, 2025

How To Upfit Electric Work Trucks and Vans

The biggest challenge lies in balancing additional equipment and accessories with EV battery capacity and range.

Read More →