Rockwood Equity Partners Invests in Energy Renewal Partners

Energy Capital Partners Acquires Triple Oak Power

January 8, 2024

Renewable Energy

Energy Capital Partners (ECP) has acquired Triple Oak Power from EnCap Energy Transition Fund I and its co-investors Yorktown Partners and Mercuria Energy. Triple Oak, a Portland-based wind project developer with a pipeline of more than 8.0 GW, will partner with ECP to accelerate project development and scale its renewable energy platform in the U.S.

Blackstone Energy Transition Partners Makes Majority Investment in Westwood Professional Services

August 7, 2024

Engineering Services

Private equity funds affiliated with Blackstone (Blackstone Energy Transition Partners) have agreed to make a majority investment in Westwood Professional Services, Inc., acquiring the stake held by Endurance Partners and Palm Beach Capital while Westwood management and employee shareholders retain a minority interest. Westwood, a Plano, Texas–based engineering and design firm with more than 1,600 employees, serves renewables, power, real estate and public infrastructure end markets and will leverage Blackstone's resources to expand capabilities across those markets.

One Equity Partners Acquires EthosEnergy

August 28, 2024

Industrial Services

One Equity Partners (OEP), a middle market private equity firm, has acquired EthosEnergy, a global independent service provider for rotating equipment serving power generation, energy, industrial and aerospace & defense markets. The transaction supports EthosEnergy's growth as demand for maintenance, repair and overhaul (MRO) and outsourced operations & maintenance rises amid secular tailwinds in gas power and broader electrification trends.

Rockwood Equity Partners Recapitalizes Pase Environmental

December 14, 2021

Environmental Services

Rockwood Equity Partners completed a recapitalization of Pase Environmental, partnering with founder and president Rina Kabouk to establish Pase as the first platform of Rockwood’s Fund IV. Based in Parker, Colorado, Pase provides erosion control and stormwater remediation services across residential, commercial and municipal markets; the deal is intended to fund growth initiatives and build underlying infrastructure using Rockwood’s operating system.

Arcwood Environmental Acquires ERG Environmental

October 7, 2025

Environmental Services

Arcwood Environmental, a national environmental and waste management services provider headquartered in Indianapolis, has acquired ERG Environmental, a Michigan-based hazardous waste and remediation services firm. The deal strengthens Arcwood's operational footprint across the Great Lakes (Michigan, Indiana, Ohio) and expands its capabilities in industrial environmental services, compliance support, and emergency response.

BlackRock Real Assets Acquires Vanguard Renewables from Vision Ridge Partners

July 20, 2022

Renewable Energy

A fund managed by BlackRock Real Assets has acquired Vanguard Renewables from Vision Ridge Partners. BlackRock will partner with Vanguard Renewables' management to scale the company's organics-to-renewable energy platform, supporting plans to commission more than 100 anaerobic digesters to produce renewable natural gas across the United States.