Protection & Controls

Protection & Controls

Protection & Controls

A reliable protection & control (P&C) system is an absolute necessity. System faults must be isolated from the system in a dependable and secure manner for public safety and to minimize equipment damage and loss of load. Implementing a reliable P&C system comes with a cost, but to use the insurance analogy, there’s a balance to obtaining adequate coverage to protect the asset. Our engineers can expertly evaluate your requirements and standards to provide a recommendation for the most cost effective solution. For P&C of transmission lines, rotating machines, substations, distribution systems and all points in between, we have the experience.

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

Haddam 345/115/23 kV Substation

Commonwealth provided engineering design, material bid packages, and construction bid packages for rebuilding a bulk power substation. The substation consisted of a new 345 kV switchyard for a tapped line,…

System Impact Study / Transient Stability Analysis

Wolverine Power Supply Cooperative (WPSC) contracted with Commonwealth to provide a system impact study for the interconnection of a third-party generator (IPP) near Kalkaska, Michigan. The IPP intended to generate…

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),…

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