Design-Build Services

quasar’s suite of design-build services sets us apart from our competitors.  Our in-house staff supports each project through the full project cycle, providing the expertise to make each project a success.  With all necessary services under one roof quasar can be the single point of contact for any project.   


quasar’s engineering and design expertise is the result of first hand ownership and operating experience. quasar has a comprehensive understanding of the characteristics associated with a successful anaerobic digestion project. This allows us to design our systems to minimize operational challenges.  We believe this experience uniquely distinguishes and qualifies quasar. We are prepared not only to construct a system but, more importantly, to ensure the system operates to its design capacity over its entire useful life.


quasar has designed, built, and currently provides various levels of operational support to fourteen high-solids anaerobic digestion systems in Ohio, Maine, Massachusetts, and New York.  

Want to Learn More? Contact us

David Baran

Phone: (216) 644-8817



Alan Johnson

Phone: (440) 666-5350


digester feasibility study
digester design
digester construction
digester commissioning
digester operation and maintenance

– Site review

– Feedstock evaluation

– Energy usage options

– Biogas monetization

– Effluent management

– Conceptual design

– Economic analysis

– In house engineering 

– Retro-fit expertise

– Custom components

– Laboratory analysis

– Project management

– Full construction services

– Procurement flexibility

– Quality control protocols

– seed sludge procurement

– Biological commissioning

– Feeding ramp-up

– Mechanical start-up

– Plant Operator Training

– trained quasar operators

– 24/7 remote monitoring

– Maintenance plans

 Ongoing lab support

Feedstock sourcing 

Effluent Management

More Information:

Farm Digesters  I  Wastewater Digesters  I  Feedstock Sourcing  I  Contact a Developer