We are committed to a sustainable, cleaner, more resilient environment for all Californians
The Yosemite Clean Energy team has the expertise, experience, and passion to help California create a healthier, more resilient environment and achieve its bold climate and clean energy goals.
Current Yosemite Projects
Catalyzing the CA hydrogen economy by serving the needs of biomass owners
Scale of Projects
100% green hydrogen 50 MWth — processing over 100,000 bone dry tons of biomass per year
Producing 19,000+ kg/day of green hydrogen
1 plant will supply up to 600 fuel cell HDV per day
Or up to 350 fuel cell buses per day
Meet the Yosemite Team
VP of Bus. Development & Managing Member
President &. Managing Member
Loren K. Dubberke
Impact & Dev. Managing Member
Chief Technology Officer
Senior Project Manager
Sales & Marketing Manager
Forestry Project & Research Associate
Board of Advisors
Dean Witter III
REPOTEC (Aichernig Engineering- GmbH), led by principal Christian Aichernig, has been developing commercial applications of the dual-fluidized bed gasification technology for over 20 years. The company has successfully commissioned over ten projects globally, and Yosemite Clean has the exclusive rights to develop Biomass projects in the USA under a licensing agreement. REPOTEC has significant knowledge in the sophisticated application of biomass gasification and is experts in dual-bed gasifiers and syngas cleaning. With the experience and expertise of REPOTEC, Yosemite Clean Energy will be able to produce Green Hydrogen, RNG and possible Heat and Power additional product streams.
With a proven track record and a simpler and more effective and efficient design and total inputs and outputs, using their experience for developing the Yosemite project will be one of the keys to success.
MMR Power Solutions, LLC
MMR Power Solutions is one of the key companies to provide power and operate distributed power for the Yosemite Clean Bioenergy fuels plants. MMR will also be a partner for plant operations and maintenance. MMR has an in-house team of an experienced team of estimators, engineers, project managers, technicians, construction, and maintenance personnel. This partnership ultimately alleviates the need to rely on the utility alone for crucial energy supply, reducing the risk of market exposure by having more internal control over vital energy supply. From gas engine and turbine plants to renewable power generation facilities—and hybrid power plants using a combination of technologies, including energy storage—MMR has the technical expertise, workforce, and resources to support Yosemite Clean Energy’s project goals and objectives.
Forest Biomass Assessment and Procurement
Biostewards has been a leader in forest fuels management research, biomass assessments, feasibility studies, and consulting to forest companies, government, NGOs, and First Nation/Tribal groups in Canada, and the USA. With unique methods for biometric analyses, the company will assist Yosemite in biomass procurement and management of forest resources.
The company has analyzed and reviewed over five million acres of timberlands in North America. It has been instrumental in advocating better forest management for multiple revenue streams from traditional forestry, non-timber forest products, and bioenergy development.
Provost & Pritchard Consulting Group
Consulting Site Civil Engineers
Provost and Pritchard, established in 1968, are a California Civil and Agricultural Engineering Company with over 150 engineers throughout the San Joaquin and Sacramento Valleys. They are experts in obtaining project permitting, California CEQA compliance, Regional Air Board, and Land Development support. They have also assisted several forest biomass projects over the years and will collaborate with the plant and site development efforts.
Project Management Consultant
Graham Noyes leads up Noyes Law Corporation (NLC). His practice is devoted to fuel and carbon law, including California’s Low Carbon Fuel Standard (LCFS), the federal Renewable Fuel Standard, and CAFE and GHG vehicle crediting. Graham represents fuel producers, project developers, and fuel distributors on policy campaigns, rule makings, and regulatory and credit generation strategies. Clients include industry leaders in sustainable aviation fuel, Fischer-Tropsch fuels, biobutanol, petroleum free E85, air to fuels, and renewable hydrogen. Graham is also the Executive Director of the Low Carbon Fuels Coalition (LCFC), a technology neutral business association dedicated to the expansion of low carbon fuel policies.