Power Delivery
Tetra Tech delivers full-service power delivery solutions from planning and siting to detailed engineering and compliance, helping clients permit and build reliable, resilient grid infrastructure from concept to completion.
We bring unmatched experience across the entire grid, from innovative microgrids to the most demanding 765 kV transmission systems.
Tetra Tech’s power delivery team delivers full-service, end-to-end support for critical energy infrastructure, combining deep technical expertise with advanced digital tools and comprehensive project management. We provide integrated planning, siting, routing, permitting, engineering, and compliance solutions that help clients move confidently from concept to construction and energization. Our multidisciplinary specialists are Leading with Science® to support utilities, agencies, and communities to design resilient, efficient systems that strengthen the grid and support the transition to a cleaner energy future.
Grid Reliability and Resiliency
Tetra Tech delivers industry-leading engineering solutions across high voltage substations (AIS/GIS), high voltage direct current (HVDC) systems, transmission lines, and distribution networks to help utilities modernize aging infrastructure and build a resilient, cybersecure grid. Our teams use advanced modeling and geospatial tools as well as proven design practices to develop reliable, scalable systems from early studies through construction. With deep expertise and full-lifecycle support, we provide end-to-end services—including engineering, design, and construction management—to ensure safe and dependable power delivery.
- Power system planning and reliability studies
- Detailed engineering and design for HVDC, HV substations, transmission lines, and distribution systems
- Owner’s engineering and construction oversight
- Program and construction management services
- Asset monitoring and inspection using drones, AI, and machine learning
- Competitive bid support
Facility Power System Expansion and Upgrade
Tetra Tech provides comprehensive engineering services to support facility power system expansions and upgrades, covering everything from HV substations, transmission lines, and medium voltage distribution to transmission line interconnections. Our electrical experts apply detailed knowledge of codes, protection systems, and system modeling to design safe, efficient, and reliable power infrastructure. We’re adept at working with original equipment manufacturers to integrate essential parts and equipment into broader energy design schemes. We support clients through every phase—studies, permitting, design, procurement, and construction management—ensuring smooth execution and long-term performance.
- Feasibility assessments and system studies
- Permitting and regulatory support
- Engineering and design for substation expansions, equipment replacements, transmission/distribution connections, and automation upgrades
- Procurement assistance and contractor coordination
- Construction support, commissioning services, and digital modernization programs
Regulatory and Permitting Support for Power Delivery
Tetra Tech provides comprehensive regulatory, technical, and permitting support for transmission systems and power delivery infrastructure, helping utilities and developers navigate complex local, state, and federal approval processes while delivering data-based and defensible routing and siting studies and permit applications. Our multidisciplinary teams integrate engineering, environmental, and regulatory expertise with a deep understanding of state and local legislation necessary for successful applications for your power delivery projects.
- Strategic planning and project development for transmission lines and power delivery systems
- Permitting and regulatory approvals
- Routing and siting analysis incorporating environmental, social, engineering, and land-use considerations
- Environmental assessments, field surveys, and environmental management plans
- Community, stakeholder, and Indigenous engagement
- Geotechnical investigations and technical studies
- Compliance monitoring, reporting, and regulatory documentation
Utility Management Consulting
Tetra Tech supports utilities by combining engineering expertise and business management principles with organizational and operational consulting. Our advisory services complement our technical capabilities across substations, transmission, distribution, HVDC, and large-scale construction programs—helping utilities modernize their systems while improving efficiency, governance, and financial stability.
- Utility maturity model assessments and strategic roadmaps
- Change management coaching
- Business process reengineering
- Corporate strategy development and operational optimization
Clean Energy Transition and Utility Modernization
Tetra Tech supports our clients in achieving their decarbonization and net zero goals. Our clean energy transition and utility modernization practice combines a business management mindset with technical and engineering know-how to make the most out of the latest technologies. This includes optimal integration of renewable energy and battery storage solutions as well as asset modernization solutions. Our global portfolio of clean energy programs and utility advisory services makes Tetra Tech an ideal strategic partner to close the gap between idea and implementation and to fast-track fulfilment of decarbonization and climate change resiliency goals.
- Grid interconnection impact assessment studies, permitting, and design
- Distributed generation solutions planning, permitting, and design
- Electrification consulting and design
- Feasibility assessments
- Owner’s or independent engineer services
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