Power Transmission

Our teams offer the expertise and resources to assess, plan, engineer, and commission the vital facilities of resilient and efficient transmission systems.

Proven Capabilities to Support Your Projects

Our experienced, multidiscipline project teams offer the full range of comprehensive services necessary to successfully execute all aspects of transmission grid projects. From cross-country bulk power transmission lines to enclosed gas-insulated substations tucked into tightly constrained urban locations, Sargent & Lundy is your partner to meet the complex challenges facing power delivery projects. Working in close collaboration with our clients, teams are staffed with the specific resources required to fulfill each project need. With a clear focus on quality, our proven project management skills and tools are applied to all tasks to achieve budget and schedule commitments.

Spotlight Technologies:

  • Transmission Line Uprating
  • NERC Facility Rating Assessment and Remediation
  • Storm Hardening
  • Physical/Cyber Security
  • Renewable Energy Interconnections
  • FERC Order No. 1000 Project Strategies and Collaboration
  • Generation Plant Retirement Switchyard Modifications
  • Smart Grid and Grid Modernization

Substation Engineering Services for Grid Modernization  Download

Grid Modernization Consulting Services  Download

Webinars on Flexible AC Transmission Systems (FACTS). Three informative discussions are available online.  View

Transmission Line and Substation Engineering Courses:  Course dates, brochures, and registrations forms


Comprehensive Services:

  • Air- and Gas-Insulated Substation Design
  • Grid Modernization
  • Overhead, Underground, and Submarine Transmission Line Design
  • Program/Construction Management and Commissioning
  • Procurement and Material Management
  • System Studies
  • Regulatory Compliance
  • Owner’s Engineer
  • Transmission Line and Substation Engineering Training Courses

Air- and Gas-Insulated Substation Design

Sargent & Lundy has designed hundreds of substations and switchyards for electric utilities, independent power producers, and industrial installations from 2.3 kV to 765 kV.  Our experience includes open-air and gas-insulated stations, both greenfield sites and upgrades, and expansions of existing substations. Sargent & Lundy’s comprehensive services range from conceptual designs, cost estimates, and siting studies to physical design, grading and drainage design, protection and control engineering, foundation design, and preparation of complete specifications for material, equipment, and construction.

This extensive experience is applied to develop creative solutions for challenging projects, including innovative physical arrangements to accommodate space constraints and irregular site boundaries, enclosed substation designs compatible with urban environments, grading and drainage designs to comply with stormwater runoff and retention regulations, and integrating new control and protection systems into existing substations.

Grid Modernization

The collision of Power Generation and Big Data has resulted in a world of distributed generation (DG) requiring a more real-time, intelligent, networked, and secure power grid than aging equipment can support. Smart Grid operations require substation devices that can accommodate supervisory control and data acquisition (SCADA), human machine interface (HMI), digital fault recorders (DFR), phasor measurement units (PMU), smart metering, and intelligent electronic devices (IED).

Sargent & Lundy has a proven track record of completing projects across the United States and internationally that support smart grid implementation, including new substation designs, solar and wind energy designs, battery energy storage, grid interconnection, load flow studies, and cyber/physical security projects along with hundreds of NERC CIP compliance upgrades.

Our depth of experience, staff resources, quality focus, and proven processes can effectively support your next Grid Modernization project along with providing turnkey solutions for project management, construction management, and implementation services.

Overhead, Underground, and Submarine Transmission Line Design

Developing cost-effective designs suited for the diverse conditions encountered along transmission line routes requires experienced project teams. Sargent & Lundy has designed thousands of miles of transmission lines in all voltage classes. We’ve analyzed and designed all types of structures for new and existing overhead lines and designed riser structures for transitions from underground to overhead lines. Our complete project services include line routing, conceptual designs and cost estimates, project life-cycle cost studies, cable selection, duct package design, structure and foundation design and analysis, optimized structure spotting, lightning performance analysis, induction studies, and preparation of material and construction specifications.

Sargent & Lundy has developed compact line designs to fit into narrow rights-of-way, foundation designs for extremely poor subsurface conditions, designs and construction procedures for installations done with helicopters, and underground cable installations under congested, urban roadways involving railroad and transit system track crossings.

Program/Construction Management and Commissioning

Sargent & Lundy deploys extensive experience and multidiscipline resources to provide clients with effective coordination and administration of each phase of complex projects. This includes: development and maintenance of integrated project schedules; preparation of budget estimates; tracking status of engineering, procurement, and construction activities; and management of multiple supply and construction contracts.

The appropriate combination of onsite staff and office support is applied to effectively manage large projects or multiple-sequenced programs of projects, from concept to commissioning. We work with project owners to develop comprehensive plans for each project. The sequence of tasks is evaluated, incorporating our knowledge of utility capital projects. Permitting requirements, public and property owner issues, engineering challenges, supply chain considerations, construction complexities, and outage constraints are incorporated in this process.

In conjunction with the development of specifications for transmission and substation material and equipment, we perform a complete range of procurement services. Procurement services range from soliciting and evaluating bids to supplier monitoring and expediting, including factory inspections, quality control reviews, and test witnessing.

Sargent & Lundy also provides complete construction management and commissioning services for power transmission projects. Our experienced staff is available for onsite management and quality control surveillance of all construction activities. We can provide a complete construction services team for a project or individual personnel for staff augmentation. Our experience ranges from monitoring construction of hundreds of miles of transmission line to erection of multistory buildings for enclosed urban substations.

We provide testing services for analysis and commissioning of substation equipment and complete substation installations. Our approach includes close collaboration with the owner to develop testing criteria and procedures that comply with necessary requirements and documentation that is accurate.

Transmission Line and Substation Engineering Courses

Sargent & Lundy offers training in Substation and Transmission Line Design to our clients in the utility industry. Training is offered in our Chicago office annually in the spring and fall. We also offer onsite classes to our clients upon request. Each course lasts four days and upon completion earns 32 Professional Development Hours (PDHs).

Upcoming Courses
Courses are conducted at Sargent & Lundy’s Chicago headquarters

Substation Engineering Course Brochure
September 17 – 20, 2018

Transmission Line Engineering Course Brochure
September 24 – 27, 2018

Underground Transmission Line Engineering Course
Dates coming soon

Any questions about the courses or registration?
Contact:  Bettie Kidd  Tel: 312-269-7820

Registration Forms



Business Contact

Todd Hanssen

Todd brings 25 years of experience in the design of power generation and transmission projects and is currently the director of power transmission construction services.