Press Kit

Who is Maas Energy Works?

Since our first project in 2009, we’ve built a total of 12 successful dairy digesters, including 7 of the 9 California digesters built since 2013. How? We own and operate many of these projects ourselves and know what works and what doesn’t. We specialize in economical, reliable facilities that are designed to operate in real world dairy conditions, and maintain 24x7 operations support capability to keep our sites up and running. With the best team in the industry, and over 20 full time employees and contractors in digester operations and development, we build

dairy digesters that work.

Manure is a resource. For years, dairy farmers have been collecting cow manure, storing it, and using it as a renewable fertilizer. A manure digester unlocks even more value by extracting energy from manure. A digester is a tank or pond that contains manure, but captures the methane gas emissions that would otherwise escape into the atmosphere. Naturally-occurring bacteria in the manure break down the organic matter and create biogas. The biogas primarily consists of methane, an energy-rich fuel. The biogas fuels electrical generators that supply power to the grid, or supply onsite needs.


What does Maas Energy Works Do? 

In partnership with dairy farmers or other commercial facilities, Maas Energy Works specializes in developing, owning, and operating these anaerobic manure digesters. Daryl Maas, president of Maas Energy Works, has learned about digesters not by selling them to others, but by building, owning, and operating them himself. Maas got started in cow power in Washington State with his brother Kevin. Together they built five operational digesters in Oregon and Washington as Farm Power Northwest, founded in 2007 and going strong today. In 2010, Maas continued to expand by bringing Maas Energy Works to California in order to explore the large renewable sector growth there. Today the company develops, builds, operates, and improves biogas projects all across the state.

After hundreds of thousands of operating hours in three states and processing the manure on nearly 20 farms, we know how to build and run these projects. Our projects are cost-effective and efficient, reliable in real-world field settings. 

About Maas Energy Works

Fastest-growing digester developer on the West Coast

Founded 2010 by Daryl Maas

HQ in Redding, California

Contact Info


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As Featured By...

ABC30 Action News
Manure Manager
Climate Action Reserve
Sacramento Business Journal
Capital Public Radio
Biomass Magazine
Valley Public Radio
Sacramento Bee

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