Our passion is designing, strengthening, securing, and modernizing our grid to deliver power efficiently, safely, and intelligently. Power Delivery has been in our DNA since the first evolution of Commonwealth in 1888.
We help customers deliver secure, affordable, and dependable access to energy—precisely when and where it’s needed. Our team of transmission and distribution planning consultants and advanced substation design experts deliver innovative solutions that prioritize safety, enhance reliability, and drive system efficiency. With extensive knowledge and experience in power delivery services, we specialize in creating project scopes, upgrading existing systems, and designing new power delivery infrastructure.
Commonwealth works closely with all stakeholders to give complete support throughout the entire power delivery process, from conceptual planning to project execution and commissioning. On the substation side, we perform upgrades, expansions, and new designs for all types of substations, collector stations, and switchyards. Our expertise covers 2.4 kV to 765 kV and encompasses civil, physical electrical, protection & controls, relay settings, and configuration of remote terminal units. As your transmission and distribution consultant, we cover new transmission line designs, rebuilds, right-of-way acquisitions, studies, routing, siting, and interconnections. Whether mountainous, urban, brownfield, greenfield, underground, or overhead, Commonwealth can deliver.
With a proven track record, thousands of successful projects completed in the past 35 years, and 170 power delivery engineers and design technicians on staff, we specialize in sophisticated, high-quality designs to meet your power delivery needs.
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Transmission Tower Relocation Study
Great River Energy (GRE) is a not-for-profit electric cooperative serving approximately 700,000 members throughout rural Minnesota. Serving one-third...
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International Drive Distribution and Automation System Improvements
Duke Energy Florida has an International Drive (I-Drive) system that is a unique distribution system designed to meet the high-reliability...
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Physical & Electrical Design for Substation Needed for Wind Farm Interconnection
Avista needed to fulfill a large generator interconnection, in this case, a wind farm, with firm deadlines for the design completion to meet the...
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Single Circuit 230kV Design and Full-Length Optical Ground Wire (OPGW) Fiber Optics Project
42-MILE SINGLE-CIRCUIT WOOD H-FRAME DESIGN AND FIBER OPTICS PROJECTAmerican Energy, Inc. needed new high-voltage transmission lines to interconnect...
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Greenfield Substation Protection and Control Design
The Duke Energy Kennel Substation project was being done to increase reliability and add new circuits to feed another station. Commonwealth...
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System Impact and Transient Stability Analysis
Wolverine Power Supply Cooperative (WPSC) contracted with Commonwealth to provide a system impact study for the interconnection of a third-party...
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University of Michigan Biological Sciences Building Tunnel Structure Reinforcement
University of Michigan (U of M) needed to reinforce and upgrade sections of its utility tunnel structure adjacent to the new Biological Sciences...
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Anclote Plant - System Protection Redesign and Rebuild
Duke Energy Florida's Anclote Generation Switchyard includes a large coal plant on site. The site has two units of generation. The substation...
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Gas Insulated Substation Expansion
Mitsubishi Electric Power Products (MEPPI) called for a foundation expansion of an existing 115kV Gas Insulated Substation (GIS.). The expansion...
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Related Insight
Apr 19, 2023
IEC 61850 – 5 Essential Benefits for Reliable Power Grids
IEC 61850 is a standard that has become increasingly relevant for the utility industry due to its benefits in enabling seamless integration and...
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Other Expertise
“Commonwealth makes sure we are knowledgeable. I appreciate how they share their expertise.”
Manager Substation Engineering, Midwest Investor-Owned Utility