Global concerns about energy independence, security, climate change, and environmental protection have propelled cost-effective generation of energy from waste to the forefront of today’s renewable energy market. Tetra Tech offers a comprehensive suite of development and engineering services to ensure that available waste materials are transformed into renewable alternative energy while achieving regulatory compliance and waste minimization goals. Whether daily feedstock operations generate thousands of tons of waste or millions of gallons of wastewater, Tetra Tech’s integrated services help our clients effectively transform these byproducts into electricity, thermal energy, natural gas, and fuels representing salable products.

Tetra Tech has performed more than 200 design-build and engineering, procurement, and construction projects in this field. Tetra Tech offers owners, developers, and investors outstanding resources and experience, with a project team averaging more than 20 years of experience to provide our clients full lifecycle support for all of their materials management needs. Our expertise includes:  

  • Resource planning and management
    • Zero Waste and recycling strategies
    • Urban master planning development
    • Sustainability and carbon impact improvement
    • Permitting and compliance support
  • Waste to energy (bioenergy) focus
    • Municipal solid waste and organics diversion
    • Industrial, tires, and plastics manufacturing byproducts
    • Agriculture byproducts
    • Biogas and landfill gas optimization and utilization
    • Construction and demolition materials
  • Market sectors
    • Municipal solid waste (MSW)
    • Diversion and recycling (including food and beverage waste products)
    • Agriculture
    • Forestry and wood (biomass)
    • Wastewater treatment plants (WWTP)
    • Biofuels and transportation (renewable natural gas)
  • Waste conversion technologies
    • Materials Recovery Facility (MRF)
    • Direct combustion or incineration
    • Refused derived fuel (RDF) / processed engineered fuels (PEF)
    • Gasification 
    • Pyrolysis
    • Anaerobic digestion (biogas)
    • Landfill gas
    • Composting
  • Energy from waste and conversion technologies services
    • Waste planning and strategic services
    • Project development (feedstock assessment and acquisition, energy off-takes, siting)
    • Permitting
    • Complete engineering and design
    • Owners engineering representation
    • Pilot studies
    • Construction and construction management 
    • Commissioning and start-up
    • Operations and maintenance
  • Power plant operation and maintenance
    • Landfill gas, digester gas, and natural gas-to-energy operations
    • Engine overhauls
    • Emissions tuning
    • Controls troubleshooting
    • Commissioning and start-up
    • Routine engine services
    • Emergency and non-routine repairs
    • Production optimization
    • Spare parts sourcing

Related Projects

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St. Landry Parish Landfill Biogas Expansion Project, Louisiana

Converting landfill gas to usable renewable natural gas fuel for solid waste disposal and district vehicles

Methane Emissions Recovery and Energy Use in Latin America

Methane Emissions Recovery and Energy Use in Latin America

Assisting the U.S. EPA to provide capacity building and technical assistance throughout Latin America to reduce methane emissions

Environmental Licensing, Brazil

Organics Recycling and Bioenergy Facility, Connecticut

Providing full design and permitting for the first high solids anaerobic digestion recycling and treatment facility in the Northeastern United States

Wastewater-derived Biofuel from Persigo Wastewater Treatment Plant, Colorado

Wastewater-derived Biofuel from Persigo Wastewater Treatment Plant, Colorado

Installing a BioCNG™ biogas conditioning system and gas pipeline to turn otherwise wasted biogas into clean, green vehicle fuel