Danos Group Holdings Acquires Performance Energy Services (PES)

GenServe Acquires Power and Energy Services, Inc. (PES)

November 20, 2025

Industrial Services

GenServe, a PE-backed provider of backup power solutions, has acquired Power and Energy Services, Inc. (PES), an Austell, Georgia-based generator maintenance, repair, rental and equipment solutions provider. The acquisition expands GenServe's presence in the Southeastern United States, strengthens technical capabilities, and establishes a regional operations hub to support future growth.

DPIS Builder Services Acquires Home Energy Division of Ensign Building Solutions

May 6, 2021

Construction

DPIS Builder Services, a Saw Mill Capital portfolio company, acquired the Home Energy Division of Ensign Building Solutions to strengthen its East Region capabilities and expand its HERS rating and energy inspection services in the Southeast. The add-on expands DPIS's national footprint and increases its scale within builder services, contributing to a combined staff base of over 600 locally positioned employees across the U.S.

DPIS Builder Services Acquires Building Energy

July 26, 2021

Construction

DPIS Builder Services, a Houston-based provider of builder services owned by Saw Mill Capital, acquired Building Energy, a Star, Idaho-based HERS rating and building energy certification company. The add-on expands DPIS's footprint and capabilities in the Northwest (Boise, Coeur d'Alene, Spokane) and brings Building Energy's team into DPIS to support ENERGY STAR and other efficiency programs.

E78 Partners Acquires Profit Enhancement Systems

July 5, 2022

IT Services

E78 Partners, a private-equity‑backed provider of finance, accounting and technology solutions, has acquired Profit Enhancement Systems (PES), a technology‑enabled managed service provider focused on cloud, mobility and infrastructure cost optimization. PES will form the basis of a new cost‑optimization business unit within E78, expanding E78's capability to reduce IT and cloud spend for Fortune 500, private equity portfolio and middle‑market clients. The deal was announced July 5, 2022; financial terms and a selling party were not disclosed.

Integrated Energy Services Acquires MACH Energy

June 24, 2019

Energy

Integrated Energy Services (iES), a portfolio company of Gainline Capital Partners, has acquired MACH Energy, an energy management and sustainability software platform. The combination brings together iES's grid-relationship management and demand response capabilities with MACH's building energy analytics to expand product capabilities, improve grid resiliency, and accelerate growth across commercial building customers.

Keystone Capital Acquires Lane Power & Energy Solutions, Inc.

October 1, 2019

Oil & Gas

Keystone Capital has completed the acquisition of Lane Power & Energy Solutions, Inc. (LPES), a Houston-based provider of underground hydrocarbon storage and turnkey EPC services for petrochemical, midstream and government customers. Keystone said it will partner with LPES management to expand capabilities, broaden service offerings and grow organically and via targeted acquisitions; transaction terms were not disclosed.