Grid Interconnection

Grid Interconnection

Grid Interconnection

Commonwealth has expertise in connecting many facilities to the grid, from microgrids to large interstate transmission projects. We have the expertise and capability to interconnect systems from 23 kV up to 500 kV. Commonwealth experts can perform transmission screening studies to help recommend the optimal points of interconnection to the grid and estimate the amount of power that can be injected into the grid in areas without transmission facility upgrades. We can identify the limiting transmission facility and calculate the gross cost estimates to upgrade the transmission facilities. We can help identify transmission lines in the vicinity to your plant site. Commonwealth experts can develop a one-line diagram for conceptual interconnection facilities. We can observe base case flows and note any obvious normal system overloads. Commonwealth can review the generation interconnection queue to identify any other competing projects in the vicinity that may impact the transmission system. We have performed many successful projects with wind, solar, and biomass generators. We can successfully meet your grid interconnection project needs from the beginning of the project to the closing of the project.

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…

Roseland – Bushkill 230 kV / 500 kV Transmission Line Design

Public Service Enterprise Group (PSE&G) needed a new high voltage transmission line to help stabilize the high voltage grid within the PJM region. Commonwealth was selected to design a new…

TES Filer City Station Repower

The CMS Enterprises and Tondu Energy Services partnership selected Commonwealth to repower the existing steam turbine and fulfill the process steam needs with the use of combustion turbines and heat…

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

Engineering & Design

Commonwealth professionals can engineer and design a new plant, facility, building, and power system for you. read more


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