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Transmission & Distribution

Moving power where it’s needed – our capabilities help provide a safer and more reliable electric grid.

Transmission and distribution overview

In 2015, RES acquired System 3, a specialty HV electrical contractor, and established its self-performing T&D construction division. Our T&D team continues to support our clients with the same quality service of System 3, backed by the in-house engineering, HSQE (Health, Safety, Quality and Environmental) program, and project management experience of RES.

RES T&D has built over:

1,000 miles

of t-lines



300 miles

of distribution circuits

Everyone goes home safe every day

Safety is our number one priority, whether on construction sites or in the office. We use behavior-based safety methods to supplement our safety management system and to enhance the safety culture among our work crews and subcontractors. Safety strategies include:

  • Safety walks
  • Tracking leading indicators through behavioral observations
  • Positive recognition
  • Consistent safety messaging
  • Safety guidance


Read more about

RES T&D capabilities

RES T&D Substation Construction for the Goodwell Wind Project

RES T&D Substation Construction for the Goodwell Wind Project

Transmission capabilities

RES has constructed over 1,000 miles of transmission lines (up to 345kV), with EPC capabilities and engineering support available. Our transmission scope includes:

  • New installation – Wreck out and rebuild
  • Reconductoring
  • Foundations
  • Fiber splicing and testing
  • Structural upgrades and replacements – Steel, concrete, lattice, and wood structures
  • Restoration

Substation capabilities

Our consistent, long-term substation crews have deep expertise in the utility and renewables spaces and our in-house engineering and procurement teams enable us to be a valuable EPC partner to our customers. With over 100 substations built to date up to 345kV, our substation scope includes:

  • Greenfield and brownfield/energized additions; both with full EPC capabilities
  • In-house capabilities from clearing and site preparation through foundations, all above grade work including wiring and bus welding
  • AIS (Air Insulated Switchgear) and GIS (Gas Insulated Switchgear) experience
  • Architectural walls, buildings, and decorative landscaping for high visibility areas

Distribution capabilities

Our experienced distribution team works on underground and overhead lines from 12kV to 69kV. Our capabilities include new construction, reconductoring, storm hardening, emergency restoration, and maintenance/rebuild. Our crews can perform work on energized lines 69kV and below.

Storm and emergency restoration

RES can respond quickly to assist clients during storm and emergency conditions. Our crews have experience responding to ice, tropical, and seasonal storms and wildfire restoration.

RES T&D Substation

RES T&D Substation

News and Events

This is what America's eco city of the future looks like

Georgetown mayor Dale Ross is ‘a good little Republican’ – but ever since his city weaned itself off fossil fuels, he has become a hero to environmentalists

by Tom Dart in Georgetown, Texas…

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RES is pleased to announce that it has been placed 55th in the Sunday Times HSBC Top Track 100 which ranks Britain's 100 private companies with the biggest sales. Other recognisable names on the list include Southern Water, Biffa and Monarch Airlines…

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Strategic purchase will allow RES to expand transmission business, accelerate growth.

Broomfield, CO—Renewable Energy Systems Ltd. (RES), a leader in the origination, development, engineering, construction, and operation of wind, solar, transmis…

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