Power Planning, Routing and Permitting

We deliver end-to-end power planning, siting, routing and permitting services that accelerate energy infrastructure development. Our teams combine technical expertise, stakeholder engagement and digital tools to help clients navigate complex regulatory landscapes and deliver sustainable, community-aligned transmission solutions.

Projects Our experts FAQs Join our team

We support clients across the full lifecycle of energy infrastructure—from feasibility to construction. With decades of experience and a growing team of specialists, we provide environmental planning, permitting, stakeholder engagement and regulatory support for transmission, generation and storage projects. Our experts have led transmission and substation siting projects across the U.S., including some of the most complex and high-profile siting efforts. These teams have completed thousands of miles of electric transmission routing and siting, with particular expertise in extra high voltage both HVDC and HVAC. We bring together local knowledge and global expertise to deliver technically sound, socially responsible and environmentally sustainable outcomes. Whether navigating narrow rights-of-way or coordinating public outreach or with federal, state, local and tribal agencies, we help clients move forward with confidence.

Transmission projects delivered across the U.S.

400+

Combined siting and permitting experience

125+ YRS

Longest single transmission corridor supported

800 MI

Powering progress across energy systems

CHPE Transmission Line, New York >

Integrated siting and permitting expertise

We support clients across the power and energy spectrum with siting and permitting services. Our team has led projects nationwide, including complex regulatory filings, stakeholder outreach and environmental studies. We’ve authored siting manuals, provided expert testimony and guided utilities through some of the most challenging projects in the U.S.

Smarter routing through digital tools

Our GoldSET® platform combines stakeholder input, spatial data and scenario modeling to optimize siting and routing. Whether for solar, storage or transmission, we help clients identify sustainable, community-aligned solutions. This data-driven approach supports transparency, reduces risk and accelerates permitting. Learn more in our route selection article.

Siting and Routing with GoldSET® >

JPMRC Shore Power, Hawaii >

Planning for resilient energy delivery

We help utilities and developers plan resilient energy systems. Our experts support thermal, renewable and storage projects with advanced modeling, regulatory insight and deep coordination across disciplines. From NERC compliance to contingency analysis, we deliver actionable insights that help confirm system readiness and meet evolving grid demands.

It is vital to have a structured approach that considers environment, social and technical components to progressively analyze options until a preferred route is identified.

Peter Sparhawk Environmental, Transmission & Distribution Lead

Peter Sparhawk Environmental, Transmission & Distribution Lead

Explore our power and energy projects

Guam, USA

From Crisis Response to Resilient Infrastructure: Integrated Power Solutions for Guam

How rapid emergency power support and long-term resilience planning is helping Guam prepare against future storms.

Texas, USA

345-kV Transmission Line Routing

We developed geographically diverse alternative routes for new transmission across a protected wildlife refuge in Texas.

Idaho, USA

Empowering Idaho Power to Integrate Renewables with Confidence

Our advanced cluster study with Idaho Power provided foresight, compliance assurance and upgrade recommendations for a future-ready grid.

thn-Public Outreach Communications Support

Virginia, USA

Coastal Virginia Offshore Wind Routing Study

Public outreach communication efforts support routing study to connect a Virginia offshore wind project to onshore facilities.

United States

Design Studies for 500-kV Transmission

We served as owner’s engineer and lead electrical engineer for a transformative 732-mile transmission system, supporting millions of homes and businesses with low-carbon electricity.

California, USA

El Centro Unit 3 Powerplant Upgrade

An upgrade from a simple cycle power plant using more efficient combined cycle technology boosts reliable energy for southern California.

California, USA

30-MW/20-MWh Battery Energy Storage System

We partnered with Imperial Irrigation District (IID) to help engineer the future of energy storage and deliver one of North America’s largest battery energy storage systems.

California, USA

Barren Ridge Renewable Transmission Project

To help California meet its renewable energy goals, we partnered with Los Angeles Department of Water and Power (LADWP) to deliver a major transmission project that connects communities to wind and solar energy.

New York, USA

Propel NY Energy Project

Electric transmission infrastructure will power a reliable energy future for all New Yorkers.

Los Angeles, California, USA

Transmission Line Visual Mitigation Plan in National Forest

Visual mitigation planning for a proposed 62-mile transmission line crossing the Angeles National Forest focused on coordination between agencies to reduce visual impacts.

Seattle, Washington, USA

Seattle City Light’s Denny Substation

Using program management solutions to create an innovative, state-of-the-art substation and community centerpiece.

New Mexico, USA

Moving the wind

Energizing four New Mexico wind farms to power the lives of 900,000 people across the West.

Need support navigating complex energy permitting, siting and routing challenges?

Get in touch with our multidisciplinary experts to explore how we can help move your project forward.

Our experts

Peter Sparhawk

Environmental, Transmission & Distribution Lead

United States

Mary Kristen

US GoldSET Product Lead, Senior Consultant

United States

Mike Doyle

Sr Project Manager II. Business Unit Director

United States

Jaime Newell

Sr Project Manager I

United States

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Frequently Asked Questions

What types of energy projects do you support?

We support a wide range of energy infrastructure, including transmission, thermal generation, renewables, battery storage and pipelines—across all phases from planning to permitting.
Learn more about our expertise:

How do you approach route selection for transmission lines?

Our siting and routing experts collect, review and analyze natural resource data and criteria, engineering feasibility and public and stakeholder sentiment. Through research and coordination with the project team, each project presents opportunities and constraints unique to the local environment. By incorporating and responding to these project-specific criteria, we deliver defensible and transparent results.

Using digital technology supports and streamlines the siting and routing process by simplifying the communication, collection and documentation of stakeholder input. Our GoldSET® platform helps identify optimal corridors through data-driven analysis and stakeholder input.