Bioenergy and Biofuels

From concept through commissioning, Tetra Tech’s bioenergy and biofuels team delivers science-based, technology-driven services to foster low carbon energy and fuel solutions.

Tetra Tech provides best-in-class service using our Leading with Science® solutions on a wide array of renewable energy and fuel options, including biogas, landfill gas (LFG), renewable natural gas (RNG), organics management and diversion from landfills, biofuels, biomass, and waste-to-energy solutions. We utilize innovative biological and thermochemical conversion technologies to foster a low carbon-based economy.

Our industry-leading team implements solutions based on engineering, science, and economics that help our clients cost-effectively transform materials into renewable, low-carbon energy and fuels. We have implemented hundreds of projects for utilities, developers, conventional energy producers including oil and gas, and municipal clients. Our services span the entire project life cycle from concept development, planning, permitting, design, construction, and commissioning. Once projects are operational, we provide ongoing technical and compliance support, troubleshooting, and optimization support services.

Aerial view of multiple anaerobic digesters representing biogas services

Biogas and Landfill Gas

Tetra Tech supports our clients in producing biogas from various feedstock types, including municipal solid waste. We have successfully executed hundreds of anaerobic digestion projects of all types, spanning from feasibility studies, feedstock and waste characterization, and equipment selection to operation. Our industry-leading staff effectively transform biogas and landfill gas into renewable electricity, heat, and RNG and digester effluent into nutrient-rich fertilizers from all types of feedstock including:

Tetra Tech BioCNG renewable natural gas equipment

Renewable Natural Gas

Tetra Tech’s expert team of planners, engineers, and specialists analyze RNG generation and utilization for a variety of project types. RNG is currently a critical component in decarbonization and a low carbon future. We provide full service to our customers, implementing various RNG process technologies from concept through commissioning and operation on more than 30 projects. We assist our clients in cost-effective execution of greenfield and brownfield projects in the following rapidly evolving marketplaces:

  • RNG to vehicles, pipelines, virtual pipelines, and utility connections
  • RNG offset fossil-based natural gas
  • Low Carbon Fuel Standards (LCFS) and Renewable Fuel Standards (RFS)
  • Implementation of all technologies, including BioCNG™ technology
3D layout of a Tetra Tech low carbon fuel project

Low Carbon Fuels and Sustainable Aviation Fuel

Tetra Tech specializes in developing cost-effective renewable fuel solutions that displace fossil fuels, lower carbon emissions, and provide climate change solutions. We support our clients in project development, design, construction management, permitting, commissioning, and optimization for the following:

  • Biomass
  • Cellulosic ethanol
  • Biodiesel/renewable diesel (waste oils, soy, palm, tallow, algae, etc.)
  • Biorefineries
Silver pipes at a Tetra Tech-designed advanced recycling facility

Advanced Recycling and Waste to Energy

Tetra Tech implements innovative solutions for hard-to-recycle items, such as tires and used plastics. Through advanced industrial waste recycling and implementation of emerging technologies including advanced thermochemical conversion, Tetra Tech helps clients across the globe turn their waste products into reusable, saleable products. Tetra Tech has experience with the execution of the following technologies and project types:

  • Pyrolysis
  • Gasification
  • Plastics to oil
  • Tire conversion and recycling
  • Municipal solid waste to energy