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About Maas Energy Works

Maas Energy Works is a family-owned renewable energy business with headquarters in Redding, California. We develop, own, and operate renewable energy facilities by partnering with dairy families to create biogas out of cow manure and other organic wastes. We then use that biogas to generate vehicle fuel, electricity, heat, CO2, and soon, hydrogen. Our founders Daryl and Christianna Maas believe this waste-to-energy transformation demonstrates our belief that God created humanity in His image to redeem and create. Our 215 employees operate with excellence the nation’s largest fleet of over 80 dairy digesters in 9 states.

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Who is Maas Energy Works?

After finishing up a career in the US Air Force in 2007, Daryl Maas came back to his hometown in northwest Washington. Working with childhood friends and family relations, he built the nation’s first successful dairy digester business model by operating manure digesters as a tenant on family dairy farms.

In 2010, Daryl moved with his wife and two (now three) kids to Redding, California. He founded Maas Energy Works (MEW) to explore the growth opportunities in the California renewable energy market. After connecting with Leo and Peter Van Warmerdam, MEW completed its first California dairy digester on their dairy in May of 2013. The site is still going strong 11 years later.

MEW has since served as the lead developer on 70 new or upgraded dairy digester facilities that currently process manure from over 80 farms making the company the most experienced dairy digester developer on the west coast and perhaps the nation. MEW coordinates project teams, designs, schedules, permits, grants, and utilities, while selecting equipment and contractors custom to each dairy facility. The company also operates digesters and monetizes the biogas and all of its environmental attributes. Since 2007, MEW has built an affiliated team of over 150 full time digester experts, plus a network of strategic partner companies that have a familiar, collaborative working relationship that is unequaled in the industry, enabling projects to move rapidly, avoid unnecessary costs, and provide a high quality and reliable outcome. MEW’s history of timely construction and continual operational performance is unparalleled in the industry and is critical to realizing “Renewable Energy that Works.”