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.

We’d love to see how we can support your project needs. Contact us today.

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

Covert Plant Switchyard Design and Commissioning

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), with the interconnection…

Garden Peninsula Wind Farm 34.5/138 kV Substation and Transmission Line Design

Heritage Sustainable Energy hired Windemuller, Inc., to assist with their $75M Garden Wind project, located in Delta and Schoolcraft counties in Michigan’s Upper Peninsula. Commonwealth designed a new 13-mile-long 138…

CAPE Transmission System Model Build

Commonwealth's Data Management team worked under the direction of Project Manager and the Electrical Systems Department to update the short-circuit model of Southern Company's 115 kV, 230 kV, and 500…

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