What Commonwealth Associates does

Commonwealth Associates, Inc. is a U.S.-based power engineering and consulting firm headquartered in Jackson, Michigan, with 260+ employees operating from 8 nationwide offices. The firm traces its heritage in the U.S. energy landscape to 1888, with the current corporate entity established in 1988, and it serves electric utilities, renewable energy developers, conventional power generators, data center operators, manufacturing and industrial clients, educational institutions, healthcare facilities, and government entities across the United States.

Commonwealth delivers services across five primary practice areas — Renewable Energy, Power Delivery, Power Generation, Studies & Consulting, and Construction Management — covering 26+ distinct service lines spanning feasibility and planning, substation and transmission design, grid interconnection, battery energy storage systems (BESS) integration with project capacities from 2 MW/8 MWh to 250 MW/500 MWh, arc flash and short circuit analysis, microgrid development, environmental permitting, owner's engineer representation, and construction management. Technical capabilities include protective relay schemes (Differential 87T/87B, Overcurrent 50/51, Distance 21, Line Differential 87L), SCADA systems, IEC 61850 digital substation protocols, and emerging offerings in Small Modular Reactor (SMR) and Data Center power infrastructure engineering.

The firm generates revenue through project-based professional services engagements sold via a direct enterprise consulting model to utility, developer, and industrial clients. In June 2026, Commonwealth received a majority investment from New Mountain Capital, a private equity firm managing approximately $60 billion in assets, with Dr. Hisham Mahmoud appointed as Chairman of the Board. The transaction is positioned to fund organic growth and strategic acquisitions in the grid modernization, renewable integration, and power infrastructure development markets.

Name

Commonwealth Associates

Legal name

Commonwealth Associates, Inc.

Website

https://cai-engr.com

Company type

Private

Founded year

1988

Operating status

Operating

Headcount range

251–500 employees

Short description

Commonwealth Associates is a U.S. power engineering and consulting firm (260+ employees, 8 offices) serving electric utilities, renewable developers, data centers, and industrial clients across full-lifecycle renewable energy, power delivery, power generation, and grid interconnection projects.

Ownership category

akta.pro rank

Product category

Power Engineering Consulting Services

NAICS

Architectural, Engineering, and Related Services (5413), Professional, Scientific, and Technical Services (54), Environmental Consulting Services (54162)

SIC

Services-Management Consulting Services (8742), Cogeneration Services & Small Power Producers (4991)

akta.pro primary industry

Solar Balance-of-Plant EPC (Piles/Foundations, Trenching, Combiner Networks) (EUAEADAJ)

akta.pro secondary industries

Utility-Scale PV EPC (Engineering, Procurement & Construction) (EUACAGAB), Civil & Site Works EPC (Earthworks, Roads, Drainage, Foundations) (EUAEADAA)

Keywords

• Power engineering services
• Renewable energy consulting
• Substation design engineering
• Transmission line engineering
• Battery storage engineering

Headquarters

HQ city

Jackson

HQ country

United States

HQ region

North America

Offices1 record

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Operations, Marketing or Sales, Technology or R&D, Infrastructure

Revenue model

1. Engineering and Consulting Services: Professional services revenue generated through engineering consulting, feasibility studies, planning, design, project development, construction management, and commissioning support for power infrastructure projects. Services are rendered to utilities, renewable energy developers, and industrial clients on a project basis.

Go-to-market motion1 record

Distribution channels1 record

Marketing channels6 records

Core offering

Commonwealth Associates is a U.S. engineering design and consulting firm that provides power infrastructure services across five service areas: Renewable Energy, Power Delivery, Power Generation, Studies & Consulting, and Construction Management. The firm delivers feasibility studies, planning, engineering design, environmental and permitting support, construction management, and commissioning for utilities, renewable developers, industrial clients, and government customers. Specialized capabilities include BESS engineering, substations, transmission and distribution, microgrids, protection and controls, grid interconnection, arc flash analysis, owner's engineer representation, and small modular reactor (SMR) services.

Product overview

Commonwealth Associates is a premier engineering and consulting firm offering a comprehensive portfolio of power and renewable energy services. The company's offerings span five primary service areas: Renewable Energy Services (including solar PV design, battery energy storage systems, collector stations, EV integration, and microgrids), Power Delivery Services (covering transmission, distribution, substations, underground transmission, and grid interconnection), Power Generation Services (including plant betterment, conventional generation support, and small modular reactor services), Studies & Consulting (featuring feasibility studies, power process analysis, transient stability analysis, arc flash analysis, and environmental permitting), and Construction Management. Supporting these core areas are specialized services including owner's engineer representation, protection and controls, relay settings, land and right-of-way acquisition, site development, distributed generation, and compliance services. The company serves utilities, conventional power, renewables, manufacturing, education, healthcare, and government sectors across the United States.

Differentiator

Problem solved

Functional benefit

Products and services

• Renewable Energy Services

Quantifiable outcome

• BESS projects completed: 8 states, capacities from 2 MW/8 MWh to 250 MW/500 MWh
• +2 more outcomes

Named customers5 records

Segments7 records

Ideal customer profiles5 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature8 records

Partnerships

One partnership is on record.

• Wabash Valley Power Alliance (WVPA)coreStrategic or Co-development PartnerCommonwealth serves as Engineer of Record for WVPA on transmission infrastructure projects, including a 2.5-mile 69kV transmission line in Delphi, Indiana. The partnership demonstrates collaborative approaches to solving environmental and engineering challenges while meeting energy needs for industrial customers.

Scale indicators5 records

Recent moves6 records

Expansion highlights6 records

Direct peers

• Ulteig Engineers: Engineering consulting firm focused on power delivery, renewables interconnection, and grid modernization. Directly comparable to Commonwealth in serving electric utilities and renewable developers with similar transmission and substation capabilities.
• HDR Inc. Engineering, architecture, and consulting firm with strong power, transmission, and substation practices serving utilities and renewables developers. Provides similar full-lifecycle design and construction management services as Commonwealth.
• POWER Engineering Services: Engineering consulting firm specializing in power generation, transmission, and renewable energy projects. Competes with Commonwealth for utility and developer engineering engagements in overlapping geographies and technical disciplines.
• Burns & McDonnell: Employee-owned engineering, architecture, and consulting firm with a major practice in power generation, transmission, distribution, and renewable energy. Directly competes with Commonwealth for utility engineering contracts across the same customer base and service scope.
• Sargent & Lundy: Engineering consulting firm focused on power generation and transmission for utilities, with deep expertise in conventional and renewable energy projects. Provides similar Owner's Engineer and detailed design services as Commonwealth.
• Black & Veatch: Global engineering and construction firm with significant power delivery, generation, and renewable energy practices serving investor-owned utilities and developers. Overlaps directly with Commonwealth's core engineering consulting and EPC-adjacent services.

Broad incumbents

• DNV: Global energy advisory and certification firm providing engineering, testing, and advisory services to power and renewables sectors. Overlaps with Commonwealth on grid interconnection studies, renewable energy advisory, and standards-related consulting.
• TRC Companies: Engineering and consulting firm with significant power, utility, and renewable energy practices including environmental permitting and grid services. Overlaps with Commonwealth on environmental/permitting and grid interconnection work.
• Leidos Engineering: Large federal and commercial engineering services provider with a power delivery and grid modernization practice. Competes with Commonwealth for utility engineering work but also serves broader markets including federal/defense.
• Stantec: Global engineering, architecture, and consulting firm with power and renewable energy practices serving utilities. Competes with Commonwealth on multi-disciplinary engineering engagements but operates at substantially larger scale across multiple verticals.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks6 records

Key highlights7 records

Customer concentration

• Facebookfacebook.com/commonwealthassociates
• LinkedInlinkedin.com/company/54692
• Xx.com/caiengr_dot_com

Revenue estimate

Valuation estimate

Number of profiles

Profiles11 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments4 records

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Commonwealth Associates