Tetra Tech has supported the geothermal sector since 1983, offering integrated consulting, engineering, and project management services. Tetra Tech’s expertise covers the development of high-temperature geothermal power generation projects and lower-temperature, direct-use geothermal opportunities. 
Tetra Tech provides our geothermal energy clients with an integrated range of services from some of the most experienced experts in the industry. We have extensive experience in overall geothermal project management, development, and master planning; resource feasibility, evaluation, and modeling; exploration; deep well drilling; well testing and reservoir engineering; power plant engineering; and engineering, procurement, and construction (EPC) contracting.
Our staff members have worked on geothermal development ventures worldwide, including the Wairakei field in New Zealand, the Geysers and Salton Sea, and in the Philippines, Indonesia, the Caribbean, México, Latin America, Turkey, and East Africa.
Our integrated team of geothermal resource, environmental, engineering, procurement, and construction professionals helps our clients achieve their development and operational objectives. We provide cost-effective geothermal consulting services to help our clients explore, drill, develop, install, and maintain successful geothermal resource production fields and power plant projects that generate an ongoing return on investment.

Exploration, Resources, Drilling, and Reservoir Engineering Services

  • Geothermal resource appraisal and evaluation
  • Geological, geophysical, and geochemical exploration surveys
  • Interpretation and 3D visualization modeling
  • Drilling engineering and design
  • Well field analysis and management
  • Geothermal exploration, discovery, and production drilling
  • Drilling project field management and oversight
  • Geothermal well flow testing and reservoir modeling
  • Thermal transport and multi-phase flow modeling
  • Economic analysis, modeling, and financial pro formas

Environmental Services

  • Preliminary siting
  • Critical issues analysis
  • GIS application and data management
  • Biological and cultural resource studies
  • Noise modeling, baseline sound surveys, noise impact assessments, and noise compliance and monitoring
  • Environmental impact assessments and permitting 
  • Community and indigenous peoples engagement
  • ASTM Phase I environmental site assessments
  • Environmental compliance, management, and inspection
  • Post-construction environmental services

Geothermal Power Plant Engineering and EPC Services

  • Engineering and design from conceptual planning through detailed design
  • Geothermal master planning, policy development, tender, and concession solicitation preparation for large- and small-scale programs
  • Process, mechanical, piping, civil, structural, electrical, and instrumentation design
  • Turn-key design and EPC services
  • Power plant commissioning and start-up
  • Generation connection
  • Field staking and micrositing support
  • Value engineering

Construction Services, Including Balance of Plant

  • Clearing and grading
  • Site access including roadways and bridges
  • Foundation installation and electrical construction
  • Communications and overhead transmission lines
  • Turbine erection
  • Complete power plant construction including equipment, buildings, and connection to the grid