MacLean Power Systems

What MacLean Power Systems does

MacLean Power Systems is a US-based manufacturer of highly-engineered utility equipment serving electric utilities, telecommunications providers, and civil infrastructure projects across North America. Founded in 1925 and headquartered in Fort Mill, South Carolina, the company produces a comprehensive portfolio spanning anchors, arresters, cutouts, insulators, switchgear, fiberglass products, conductor hardware, ductile iron castings, and composite poles for power transmission, distribution, substation, and communications infrastructure. Operating seven U.S. manufacturing plants, MPS offers proprietary product platforms including UVMAXX™ enhanced fiberglass crossarms (claimed 80-year lifespan and UL94 V-0 fire rating), ERGO Switch™ in-line disconnects, GripSafe™ suspension clamps, Zforce™ distribution arresters, and GridCore™/Intelli-Pole™ composite poles. The company distributes through direct field sales to utilities and a domestic distributor network under quote-based B2B pricing with no publicly disclosed price list.

Following the March 2026 merger with Power Grid Components, MPS is now positioned as one of the largest suppliers of highly-engineered utility equipment in North America. The combined platform incorporates PGC brands including Allied Bolt, Elliott, ITEC, Meister, Mid-Central, Newell, Royal Switchgear, and Vizimax. Earlier vertical integration came through the May 2023 acquisition of Dotson Iron Castings (Mankato, MN ductile iron foundry) and the September 2023 acquisition of Inertia Engineering & Machine Works (California-based air break switch manufacturer). Blackstone Energy Transition Partners and Blackstone's flagship private equity strategy are now the majority owners following a transaction reportedly valued at over $4 billion, with Centerbridge Partners maintaining a minority stake in the combined entity. Steve Scharnhorst serves as CEO and former PGC CEO Mike Plaster serves as President, leading a workforce of 1,001-5,000 employees. Revenue and customer mix data are not publicly disclosed.

Name

MacLean Power Systems

Legal name

MacLean Power Systems

Website

https://macleanpower.com

Company type

Private

Founded year

1925

Operating status

Operating

Headcount range

1,001–5,000 employees

Short description

MacLean Power Systems manufactures highly-engineered utility equipment including anchors, arresters, insulators, switchgear, fiberglass crossarms, composite poles, and ductile iron castings for electric utilities across the US and Canada. Following the March 2026 merger with Power Grid Components under Blackstone ownership, it operates as one of North America's largest utility equipment suppliers.

Ownership category

akta.pro rank

Product category

Electric Utility Infrastructure Equipment

NAICS

Electrical Equipment Manufacturing (33531), Switchgear and Switchboard Apparatus Manufacturing (335313)

SIC

Electrical Industrial Apparatus (3620), Switchgear & Switchboard Apparatus (3613)

akta.pro primary industry

Transmission & Distribution Line Equipment (Bushings, Insulators, Arresters, Conductors, Hardware) (IMAGAAAF)

akta.pro secondary industries

Low-Voltage Switchboards & Panelboards (LV distribution panels, MCCs, switchboards) (IMAGAEAA), Cable Accessories & Joints/Terminations (splices, joints, terminations, link boxes) (EUADADAC), Cable Assemblies & Wire Harnesses (HDAHAOAB), Reactive Power & Power Quality Equipment (Capacitor Banks, Reactors, STATCOM/SVC, Harmonic Filters) (IMAGAAAG)

Keywords

• Utility infrastructure equipment
• Electric transmission hardware
• Distribution line components
• Substation insulators
• Composite utility poles

Headquarters

HQ city

Fort Mill

HQ country

United States

HQ region

North America

Offices4 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

Supply Chain, Personnel, Operations, Infrastructure, Marketing or Sales

Revenue model

1. Utility Equipment Manufacturing and Sales: MacLean Power Systems generates revenue through the manufacture and sale of highly-engineered utility equipment components including anchors, arresters, cutouts, insulators, switchgear, fiberglass products, conductor hardware, ductile iron castings, and composite poles to electric utilities and telecommunications providers.

Go-to-market motion1 record

Distribution channels3 records

Marketing channels3 records

Core offering

MacLean Power Systems manufactures and sells highly-engineered utility equipment components for electric power transmission, distribution, substation, and communications infrastructure. Its product portfolio spans anchors, arresters, cutouts, insulators, switchgear, fiberglass crossarms and brackets, conductor hardware, ductile iron castings, composite poles, formed wire products, and pole line hardware. Products are sold primarily to electric utilities and telecommunications providers across the U.S. and Canada through direct sales and distributor networks.

Product overview

MacLean Power Systems is a leading manufacturer of highly-engineered products and solutions for electric utility and telecommunications infrastructure. The company operates as a unified platform with seven U.S. manufacturing plants, producing a comprehensive portfolio spanning distribution, substation, and transmission categories. Key product families include: UVMAXX™ enhanced fiberglass crossarms and brackets (with 80-year lifespan and UL94 V-0 fire rating), GripSafe™ suspension clamps, Zforce™ arresters, ERGO Switch™ in-line disconnects, composite poles (GridCore™, Intelli-Pole™), and extensive pole line hardware including anchors, insulators, cutouts, switchgear, safety products, and formed wire products. The company has expanded through strategic acquisitions including Dotson Iron Castings (ductile iron foundry), Inertia Engineering & Machine Works (air break switches), and the 2026 merger with Power Grid Components which added Allied Bolt, Elliott, ITEC, Meister, Mid-Central, Newell, Royal Switchgear, and Vizimax brands. The combined entity is one of the largest suppliers of engineered utility equipment in North America, serving transmission, distribution, substation, and communications infrastructure sectors.

Differentiator

Problem solved

Functional benefit

Brands

• Zforce: Distribution arresters with Zero Air Interface polymer housing for optimal seal against moisture
• UVMAXX
• ERGO Switch
• GripSafe

Products and services

• UVMAXX™ Fiberglass Crossarms Enhanced fiberglass crossarm family with 80-year lifespan, UL94 V-0 fire rating, 440% stronger than wood, radial beam construction, UV-protective outer layer, and only two inspections needed over its service life. Sold to electric utilities for transmission and distribution applications.
• ERGO Switch™ In-Line Disconnect Patent-pending first lineman-friendly in-line disconnect switch designed for single-person installation with common battery-powered tools, featuring ergonomic angled connection system and opposing conductor housings. Targets electric utility line crews for storm response and grid hardening.
• GripSafe™ Suspension Clamps Patent-pending suspension clamp maintaining constant conductor contact through vibration, thermal cycling, and mechanical stress. A356-T6 aluminum alloy body and keeper, rated up to 250°C, captive bolts and double keeper design for slip resistance. Made in USA. Sold to electric utilities.
• Zforce™ Distribution Arresters Distribution arresters with Zero Air Interface polymer housing molded directly on composite reinforced core for ultimate seal against moisture, specialty wound fiberglass weave shroud for MOV blocks, and epoxy sealed integrated Ground Lead Disconnect (GLD) for end-of-life self-removal. Sold to electric utilities.
• Utility Anchors (Excalibur High Capacity, Manta Ray, Cross Plate) Utility anchors including Excalibur High Capacity pipe piles, Manta Ray Earth Anchors, and cross plate anchors for transmission and distribution line applications, including Buy America certified options. Sold to electric utilities.
• Excalibur High Capacity Displacement Piles Large diameter pipe piles designed to resist massive axial and lateral loads with bolted or threaded coupler system, installed using common hydraulic rotary equipment. For transmission and distribution line foundations.
• Composite Poles (GridCore™, Intelli-Pole™) Composite utility poles providing long-life performance alternative to traditional wood poles, available under the GridCore™ and Intelli-Pole™ product lines. Sold to electric utilities.
• Distribution Insulators Distribution deadend and line post insulators for overhead distribution systems. Sold to electric utilities.
• Transmission Insulators and Hardware Braced post insulators, line posts, toughened glass, and transmission hardware for high-voltage transmission lines. Sold to electric utilities.
• Substation Insulators Station post insulators for substation applications. Sold to electric utilities.
• Cutouts Polymer and porcelain cutouts for overhead distribution systems providing overcurrent protection, including cutout-arrester combo units. Sold to electric utilities.
• Switchgear Distribution switches, automation equipment, load-break devices, and brackets for utility switching applications. Sold to electric utilities.
• Fiberglass Brackets Fiberglass brackets with UVMAXX veil coating system for mechanical support of mounting equipment and insulators, available in vertical, 15, and 0 degree designs. Sold to electric utilities.
• Guy Strain Insulators Fiberglass guy strain insulators providing electrical separation from pole to guy wire for safety and system reliability. Sold to electric utilities.
• Formed Wire Products Armor rods, line guards, helical suspension clamps, deadend guy grips, and top ties for transmission, distribution, and guying applications. Sold to electric utilities.
• Safety Products Anti-climbing guards, grounding assemblies, jumper accessories, stringing equipment, and warning systems for utility worker safety. Sold to electric utilities.
• Pole Line Hardware Extensive line of pole line hardware including arms, bands, bolts, clevises, eyenuts, fittings, hangers, lag screws, nuts, pole steps, racks, staples, washers, and wireholders. Sold to electric utilities.
• Ductile Iron Castings Ductile iron castings from Dotson Iron Castings providing 2-50 lb castings with paint, machining, and heat treatment capabilities. Provides vertical integration for the company's own products.
• Air Break Switches Transmission and distribution air break switches acquired through the Inertia Engineering & Machine Works acquisition, used for switching utility lines. Sold to electric utilities.
• H-Frame Crossarm Kits UVMAXX H-Frame Crossarm kits combining all essential parts into a single customizable solution for simplified procurement and installation. Sold to electric utilities.
• Gen 2 1.75 Post Insulators Gen 2 family of 1.75 Post Insulators with cutting-edge design for improved performance. Sold to electric utilities.
• Surge Tec® Secondary Arresters Secondary arresters for protection against voltage surges in secondary distribution systems. Sold to electric utilities.
• Transmission Line Arresters Arresters designed for transmission line applications to protect against lightning and switching surges. Sold to electric utilities.

Quantifiable outcome

• 440% stronger than wood (UVMAXX crossarms)
• +3 more outcomes

Named customers1 record

Segments3 records

Ideal customer profiles2 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature4 records

Partnerships

Three partnerships are on record, tiered core and strategic.

• Power Grid Components (PGC)coreStrategic or Co-development Partner · 4 March 2026Power Grid Components merged with MacLean Power Systems to create one of the largest suppliers of highly-engineered utility equipment in North America. PGC product lines including Allied Bolt, Elliott, ITEC, Meister, Mid-Central, Newell, Royal Switchgear, and Vizimax joined the MPS family.
• Inertia Engineering & Machine WorksstrategicStrategic or Co-development Partner · 25 September 2023Acquired in September 2023, Inertia Engineering & Machine Works is a manufacturer of transmission and distribution air break switches located in California. The acquisition expanded MacLean Power's product portfolio and enhanced service to electric utilities.
• Dotson Iron CastingsstrategicStrategic or Co-development Partner · 19 May 2023Acquired in May 2023, Dotson Iron Castings is a ductile iron foundry in Mankato, Minnesota. The acquisition enhances supply chain efficiency, increases production capacity, and supports the company's vertical integration strategy.

Scale indicators5 records

Recent moves7 records

Expansion highlights6 records

Direct peers

• Hubbell Incorporated (Hubbell Power Systems): Hubbell's Power Systems segment manufactures utility-grade products including insulators, arresters, cutouts, switchgear, and pole line hardware — directly overlapping MPS's core product lines and serving the same North American electric utility customers.
• Preformed Line Products: Preformed Line Products manufactures formed wire products, helical suspension and deadend grips, and T&D hardware — directly comparable to MPS's conductor hardware and formed wire categories, with overlapping utility customer base.
• nVent Electric (ERICO): nVent's ERICO product line covers grounding, bonding, and surge protection hardware for utility and infrastructure applications — directly comparable to MPS's surge arresters, formed wire products, and pole line hardware categories.
• Powell Industries: Powell Industries manufactures medium-voltage switchgear and power control buildings for utility, industrial, and commercial markets — directly competing with MPS's switchgear product line, particularly for substations and large utility customers.
• Atkore: Atkore manufactures electrical raceway, cable, and infrastructure products — overlapping with MPS's cable management, pole line hardware, and formed wire categories, with similar B2B distribution to electrical contractors and utilities.

Broad incumbents

• Eaton Corporation: Eaton's Electrical Americas segment produces switchgear, power distribution equipment, and utility-grade electrical components at global scale — a broader incumbent that competes with MPS in switchgear and substation products while serving many adjacent industrial markets.
• ABB Ltd: ABB is a global electrification and automation leader with a substantial portfolio in transmission and distribution equipment, switchgear, and grid hardware — competing head-on with MPS in utility infrastructure while offering broader automation and digital solutions.
• GE Vernova: GE Vernova's Grid Solutions business manufactures transmission and distribution equipment, including switchgear, insulators, and grid hardware — a large incumbent competitor with deeper balance sheet and global reach than MPS.
• Schneider Electric: Schneider Electric offers a broad portfolio of electrical distribution and grid equipment, including switchgear, protection relays, and substation solutions — competing with MPS across the utility value chain while serving much broader industrial and data center markets.

Regional players

• Trinity Metals / Trinity Industries (utility pole & hardware exposure): Trinity Industries and adjacent pole-and-hardware manufacturers serve the same North American utility customer base for poles, crossarms, and related T&D hardware — a regional peer that overlaps with MPS's composite poles and pole line hardware lines.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• YouTubeyoutube.com/c/MacLeanPowerSystems
• LinkedInlinkedin.com/company/maclean-power-systems
• Xx.com/macleanpower
• Facebookfacebook.com/macleanpower

Compliance2 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles4 records

Subsidiaries10 records

Funding overview

Funding rounds1 record

Investors1 record

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

M&A4 records

Investments

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

Frequently asked questions about MacLean Power Systems