Transmission & Distribution Line Design

Transmission & Distribution Line Design

Transmission & Distribution Line Design

Commonwealth has experienced transmission and distribution technical resources available to the electric energy industry worldwide. Using the latest in technological tools, we have designed new and expanded and upgraded existing facilities with voltage ranges from 4.8 kV to 765 kV.

We are actively engaged in the development and assessment of the most advanced overhead, underground, and submarine power delivery systems. We can help you with: route selection and permitting; conceptual design studies; detail engineering and design; drawings and related services for the purchase of line materials; line construction services; overhead distribution; and underground distribution.

This service was applied to the following solution(s):

Northeast Reliability Interconnect

This project began as the 84-mile-long second 345 kV tie to New Brunswick stretching from Orrington Substation near Orrington, Maine, to an interconnection with New Brunswick Power at a point…

Wabash Blissfield Ethanol Plant 138 kV Transmission Line

Commonwealth designed a new wood 138 kV transmission line 4.5 miles in length. Private easements were purchased for right-of-way and tree trimming. In addition, routing and permitting services were rendered…

Warren Avenue Crossing

Seattle City Light has a transmission and distribution line crossing of the Lake Washington Ship Canal at Warren Avenue. The crossing includes two lattice steel towers that were designed in…

We are committed, both as a firm, and as individuals to influencing and shaping the secure energy future.

Gary Bernstein, P.E.
Vice President & Chief Marketing Officer

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Commonwealth consultants are here to help guide you and formulate a plan to allow your company to play a larger role. read more

Planning & Studies

Commonwealth experts can help you have an optimal plan for future energy sources and actions to take to keep your energy sources updated. read more


The list of projects is distinguished and varied, with each project having a unique solution. read more