OUR COMMITMENT:
Building What Matters.
Natural resources are becoming more scarce. Businesses, counties, and state agencies are being forced to change traditional operating practices, thought, and policy. By utilizing cutting edge engineering practices, we are able to find new solutions within the renewable energy and agricultural sectors. With years of experience in designing, construction managing, and improving anaerobic dairy digesters and other agricultural facilities, our qualified team of experts are ready to bring your project to life.
Gas Performance Guarantee
We meet all performance guarantees for gas production on our anaerobic dairy digester projects.
Pistachio Hulling Efficiency
Whether new or existing, we design-build more efficient pistachio hulling facilities. From site layout, to conveyance designs, water recycle loops and site controls automation, we aim to reduce overhead costs and your carbon footprint.
PLANNING
We assist in writing state grants, pro-formas, project schedules and budgets while providing in-house engineering, construction management and contractor services to ensure that your project progresses on time and within budget from the start.
DESIGN
From start to finish, we conceptualize and design to your project needs. Our engineering team’s diversified skill sets allow us to produce site plans, construction drawings, water studies, energy calculations and more.
PERMITTING
We understand the importance of adhering with state and local compliance. That’s why we assist in attaining and managing all required permits by working with state and county agencies, no matter the location and size of the project.
CONSTRUCTION
With over 15 years of experience in construction management, we work with only the best subcontractors that put safety, quality, and transparency first to ensure project success.
With more than ten years of experience in design-building anaerobic dairy digesters, wastewater systems, and agricultural processing facilities, we continue to change the meaning of sustainability across the U.S.
VALUE, INNOVATION AND TRANSPARENCY ARE TRAITS THAT WE EMBODY
“Craig Hartman has designed and built more successful dairy digesters than any engineer in the State. He was the first P.E. our company hired back in 2010 and we’ve never looked back. Craig’s vision, diligence, and commitment to excellence for California dairies have driven Maas Energy Works forward to build over 65% of the state’s current digester install base.”
Daryl Maas
Maas Energy Works | CEO
“Calgren has had the pleasure of working with Craig Hartman on numerous engineering issues. He’s been prompt, knowledgeable and responsive. In areas such as anaerobic digestion of dairy manure there is no one better.”
Lyle Schlyer
Calgren Renewable Fuels | CEO
OUR PARTNERS
Industry Affiliates
Because we are a small firm, we are able to provide a level of service and care that most other firms simply can’t match. Go ahead, ask some of our clients.
