Substation Design

Substation Design

Substation Design

We’ve helped design hundreds of projects small to large, from 2.4 kV distribution substations to 345 kV bulk transmission facilities.

Our substation design services are many and varied, from site layout for grading and drainage to commissioning services to applications of owner standards, computer designs, prefabricated buildings and packaged control houses stations.

We can do it all. We’ll provide the engineer/procure/construct (EPC) services. You can sit back and trust the project will be completed on time, on budget and without complication.

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

Covert Plant Switchyard Design and Commissioning

PGE - NEG Commonwealth was involved with the 1200 MW Covert Generating Station during its infancy in the conceptual design phase. Commonwealth assisted the owner, PG&E National Energy Group (NEG),…

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…

Relocation of NIPSCo Electric Transmission Lines for Airport Expansion

Gary/Chicago International Airport Authority (“the Airport”) was required by the Federal Aviation Administration (FAA) to obtain additional airspace in their runway approach corridor for runway expansion. This necessitated relocation of…

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

Contact us


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