Allied Services Group Acquires Substations, Inc.

Bear Castle Capital's Allied Services Group Acquires Colstrip Electrical, Inc.

December 9, 2025

Construction

Bear Castle Capital formed a new electrical services platform, Allied Services Group, and completed the acquisition of Colstrip Electrical, Inc. (CEI). CEI — a full‑service electrical contractor serving Montana, North Dakota, South Dakota and Wyoming across power, industrial, aerospace/defense, healthcare and data center end markets — will remain led by its existing management as Allied scales the platform with Bear Castle's capital and industry expertise.

Arcline Investment Management Acquires Electric Power Systems and North American Substation Services

April 21, 2021

Infrastructure

Arcline Investment Management acquired Electric Power Systems (EPS) and North American Substation Services (NASS) from Industrial Growth Partners to create a leading electric infrastructure services platform (now branded Voltyx). Industrial Growth Partners retained a minority stake in the combined business; the deal brings together protection and control engineering, high-voltage apparatus testing, and substation maintenance capabilities to serve utilities, renewable energy, data center and commercial customers.

Bernhard Capital-Backed Allied Power Acquires Dominion Engineering

September 14, 2023

Energy

Allied Group Holdings, LLC (Allied Power), a Bernhard Capital Partners-backed platform, has acquired Dominion Engineering, Inc., a provider of field service equipment, technology, and specialized engineering services to the nuclear power industry. The add-on acquisition expands Allied's technical service, equipment and engineering capabilities for nuclear utilities, supporting outage, decommissioning and waste management work; financial terms were not disclosed.

SEI Group Acquires Haskell's Hardware and Allied Insulation & Supply

July 21, 2021

Building Products

SEI Group LLC, a portfolio company of Quad‑C Management, has acquired Haskell's Hardware, Inc. (Landis, North Carolina) and Allied Insulation & Supply, Inc. (Garland / Grand Prairie, Texas). The add-on acquisitions expand SEI's specialty building products and insulation installation footprint across the Charlotte, Dallas and Washington, D.C. markets and add approximately $50 million of annual revenue to the SEI platform.

Bernhard Capital-Backed Allied Power Acquires Radiation Safety & Control Services

July 14, 2022

Energy

Allied Power Holdings, a Bernhard Capital Partners-backed provider of power plant services, has acquired Radiation Safety & Control Services (RSCS), a provider of radiological, laboratory and staffing services to the nuclear power industry. The add-on deal expands Allied's radiological monitoring, laboratory and technician capabilities to support nuclear plant operations and decommissioning; financial terms were not disclosed.

PSS Industrial Group and Cross Country Combine to Form PSS Cross Country Infrastructure Solutions

February 9, 2026

Industrial Services

PSS Industrial Group has combined with Cross Country Infrastructure Services to form PSS Cross Country Infrastructure Solutions, creating a national provider of equipment rental, supplies and services for critical infrastructure projects. The combination expands the companies' geographic footprint and capabilities across energy, renewables, utilities and civil construction markets.