Routing, Siting, and Permitting
Tetra Tech guides clients through the complex process of siting and routing transmission and distribution infrastructure with proven expertise, collaborative strategies, and regulatory success across competitive and regulated markets.
Tetra Tech delivers comprehensive routing and siting services to identify optimal corridors and locations for transmission lines, distribution lines, substations, and converter stations. Our approach balances environmental, technical, and stakeholder considerations to reduce project risk and streamline permitting approvals. We support clients through every stage of the process, from early desktop alternative siting and constraints mapping to more in-depth public engagement, route alternatives analysis, and regulatory filings. Our multidisciplinary teams develop defensible, constructible routes that minimize environmental and community impacts while adhering to state and local administrative and utility codes that prescribe routing guidelines and requirements.
What sets Tetra Tech apart is our proven experience across diverse geographies, regulatory frameworks, and with regional transmission organizations such as the California Independent System Operator (CAISO), PJM Interconnection, the Electric Reliability Council of Texas (ERCOT), Southwest Power Pool (SPP), ISO New England, the New York Independent System Operator (NYISO), and the Midcontinent Independent System Operator (MISO). We bring deep expertise in high-voltage direct current (HVDC) transmission projects, with a collaborative approach that engages clients, agencies, and communities at every step. Our work has supported successful competitive bids and permitting and regulatory approvals for industry leaders including Xcel Energy, Grid United, NextEra Energy Transmission (NEET), Portland General Electric (PGE), Idaho Power, PacifiCorp, LS Power, and more.
Routing and Siting Analysis
We provide comprehensive data-backed routing and siting services to identify optimal corridors, routes, and locations for transmission lines and associated infrastructure. Our routing and siting services are tailored to each specific geography and regulatory framework, balancing environmental, technical, and stakeholder considerations to reduce project risk and streamline permitting approvals.
Planning and Project Development
Our planning team provides the foundation for successful project execution by integrating strategic guidance, technical analysis, environmental considerations, and stakeholder needs early in project development. We help clients establish clear pathways to project success, from concept to construction; making projects feasible, compliant, and expedient; and to energization and more.
Permitting and Regulatory Approvals
Our team guides clients through complex permitting and regulatory processes, providing strategic guidance, impact analysis, and technical documentation for all levels of government. Our experience supports defensible impact conclusions and timely approvals while maintaining compliance with environmental and regulatory frameworks across the country.
Environmental Assessments, Field Surveys, and Plans
We support initial siting, construction, and operational phases with robust environmental survey and compliance programs. Our resource staff have conducted thousands of miles of biological and cultural resource surveys that support all types of habitat assessments, species plans, and mitigation programs. Our monitoring and management services help protect resources, meet permit conditions, and maintain environmental integrity through and past project delivery.
We conduct detailed environmental and resource studies to inform project siting, design, permitting, and mitigation strategies. Our experts have decades of experience assessing ecological, cultural, and social factors to achieve regulatory compliance, environmental stewardship, and project success.
Community and Stakeholder Engagement
Our communications specialists develop and implement effective public, agency, and stakeholder outreach and engagement strategies. We help clients build trust, share accurate information, and manage stakeholder relationships throughout all stages of project development.
Geotechnical
Our geotechnical team uses cutting-edge mapping and analysis technologies to provide clients with expert underground analysis and design for soil, foundation, and ground improvement systems. We focus on designing stable, cost-effective, and constructible solutions that support safe and durable infrastructure.
Compliance Monitoring
Our environmental compliance support for energy projects includes preconstruction planning and surveys; environmental monitoring and implementation support during construction; early-stage operations, including site restoration and monitoring; and environmental, permit, and monitoring compliance support throughout the project life cycle.
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