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Maas Energy Works Crew of Managers & Technicians


Maas Energy Works Staff

Daryl Maas

Chief Executive Officer

After finishing up a career in the US Air Force in 2007, Daryl Maas returned to his hometown in a dairy community in northwest Washington. He discovered many of his friends in dairy families were interested in deploying digester technology to capture energy from animal waste. He developed and commissioned his first biogas facility in 2009. Since then, Maas Energy Works has grown to be the leading developer, owner and operator of dairy digesters in North America, with over 40 completed projects serving over 50 dairies. Maas Energy Works builds digesters at no cost to the dairy while sharing profits. Or, the company can act as project manager for families that prefer to finance and own their digesters themselves. Now active in over a dozen states, Maas Energy Works employs over 80 full time dairy digester professionals whose job is to create “Renewable Energy That Works.”

Maas Energy Works Staff

Christianna Maas

Chief of Staff

As our Chief of Staff, Christianna assists the CEO & CPO to support the executives and directors in their roles. She leads in our appreciation of staff, and assists with leading the strategic planning across the organization.

Maas Energy Works Staff

Geovany Osorio

Chief Personnel Officer

Hailing from Ecuador with a Masters in Business Admin and five years of experience as the General Manger of a manufacturing plant , "Geo" is our Chief Personnel Officer (CPO). In coordination with our CEO, Geo manages developing and executing human resource strategy in support of the overall business plan and direction of the company, specifically in the areas of succession planning, talent management, organizational & performance management, and training & development. He and his Department of Culture and Talent team have stepped up to the plate in an industry where specialty experience and attention to detail are vital.

Maas Energy Works Staff

Stephen Hatley

Chief Financial Officer

Stephen has been taking care of the company finances since 2010 when the California branch began. He has over 15 years experience in financial administration and office management. He is involved with grant writing, tax exemptions, systems development, and other detailed oriented tasks. He also enjoys volleyball, board games, and long conversations.

Maas Energy Works Staff

Jordan Leichty

Director of Operations

Growing up on a family farm in Iowa, Jordan has always known the benefits farmers offer America. As Director of Operations, Jordan ensures that all of the digesters, gensets and various equipment entrusted to his department stay up and running at peak performance. He is also our lead Carbon Credits manager and go-to for all emissions offsets questions. Replacement parts, cows numbers, and carbon credits are all in a day's work for him. He consistently interacts directly with manufacturers, dealers, and utilities around the country - executing all the necessary parts of operating anaerobic methane digesters spread throughout our growing market.

Maas Energy Works Staff

Eric Fast

Director of Development

Eric Fast is the Director of Development at Maas Energy Works. He oversees the a department that includes the construction, permitting, and development of each of our company projects.

Maas Energy Works Staff

Nathan Nisly

Director of Executive Projects

Nathan comes to the California renewable energy market by way of Kansas. Fascinated by energy, machines, and industrial automation, he thrives at overseeing and executing the development phase of our projects. Electrical interconnection, project design, and permitting are a few of the worlds that he is immersed in. Nathan is also an expert on coffee, millennials, and the metric system.

Maas Energy Works Staff

David Sparling

Regional Operations Director

David serves as our Regional Operations Director and has been invaluable to our company. With previous experience from management roles in past jobs, he has settled in nicely as the head of all regional operations. If he was not at work, his ideal day would be traveling up a mountain with his family, mountain biking the whole way down, and sipping on some craft beer at dinner.

Maas Energy Works Staff

Hudson Davis

National Sales Manager

Hudson joined Maas in 2016 as the Interconnection Project Manager. In this role he works with local utilities and government agencies to interconnect each project to the natural gas network or the electrical grid via state run programs and utilities processes. He also creates AutoCAD designs and coordinates on-site construction. He values his family, friends and hobbies - such as woodworking and gardening. He also enjoys reading philosophy, history, and economics, but most of all sipping a latte with a friend at a hipster coffee shop.

Maas Energy Works Staff

Taryn Zoe

Human Resource Manager

Taryn Zoe started with Maas Energy Works in 2019, and is our Human Resource Manager. As our HR Manager, Taryn directs the functions of the Department of Culture and Talent (DCT) including onboarding, administering payroll, upholding company policies & practices, and general staff support along with the DCT team.

Maas Energy Works Staff

Hannah Huffines

Environmental Commodities Manager

Hannah Huffines is the Environmental Commodities Manager at Maas Energy Works, where she leads a team of renewable fuel analysts. The team’s role is to create carbon credits once methane captured underneath a digester’s cover is converted to transportation fuel. As a true small-town girl, Hannah spent her childhood showing cows at state fairs and working on local dairy farms. Once older, she eagerly pursued a career path in biological and animal sciences at Clemson University. The opportunity to use her passions for dairy operations and analytics at Maas has been a dream come true. When not at work, Hannah enjoys investing her time in scuba diving, CrossFitting with her husband (the most marital fun), and cheering on the Alabama Crimson Tide's football team. Roll Tide!

Maas Energy Works Staff

Eileen Martinho

Communications - Producer Relations

Eileen is a local point of contact in the Central Valley, representing Maas Energy Works in on-site meetings and events. Having her available to our clients helps ensure that their needs are heard and that we can provide more satisfying services to milk producers in our great state. Eileen comes to us from Congressman David Valadao's office where she served as his Fresno/Kings County field representative. She is a board member on the Kings Fair Foundation, a committee member for Kings County Dairywomen, a committee member for Kings County Dairy Princess Program and assists in FFA programs. Eileen was raised on a dairy farm in Lemoore, California and now resides In Tulare with her husband, Jon. She also harbors a desire to prefect the baking of a French Macaroon and is getting very close!

Maas Energy Works Staff

Jacob Krohn

Senior Construction Manager

Jacob started his career with Maas Energy in 2018 with five years of active service in the US Marine Corps, a Bachelors in Business, and work experience in residential construction. Since joining this company, Jacob has overseen the construction of 40+ dairy digesters and over 100 miles of privately owned biogas transportation pipeline. Today Jake is using his years of experience to lead the team responsible for all of Maas Energy Works' construction activities in California.

Maas Energy Works Staff

Anna Reville

Permit Management Supervisor

Anna leads the Permitting Section of MEW. She has traveled all over the country working on organic vegetable farms and raising animals, and currently has a small hobby farm with goats, chickens, and lots of fresh produce. She is also a proud new mother to a beautiful baby girl! Anna currently oversees the permitting, environmental mitigation measures, and agency compliance efforts of all the projects in the development phase of MEW. In dealing with various agencies, she works by the motto, “We will either find a way, or make one!”

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