Covanta Acquires SGS Recovery, Frontier Fibers and Buffalo Fuel Corp.

Covanta Acquires Globalcycle and Global Remediation Services

January 5, 2023

Environmental Services

Covanta, a PE‑backed sustainable materials management company, has acquired Massachusetts‑based Globalcycle and Global Remediation Services to expand its wastewater treatment, recycling and environmental remediation capabilities in New England. The deals serve as add‑on acquisitions to Covanta (under the direction of EQT Infrastructure), accelerating the company’s presence and last‑mile sustainability services in the highly regulated New England market.

Covanta Acquires BIOLOGIC Environmental Services and Waste Solutions

August 29, 2022

Environmental Services

Covanta has acquired BIOLOGIC Environmental Services and Waste Solutions, a California-based regulated waste management firm, and will integrate Biologic's Northern and Southern California facilities into its portfolio. The deal expands Covanta's western U.S. footprint and adds regulated/medical and maritime waste handling capabilities to support its sustainable materials management strategy.

EQT Infrastructure to Acquire Covanta Holding Corporation for $5.3 Billion

July 14, 2021

Energy

EQT Infrastructure has agreed to acquire Covanta Holding Corporation, a Morristown, New Jersey–headquartered owner and operator of waste-to-energy facilities, for $20.25 per share in a transaction valued at $5.3 billion including assumed net debt. The deal, unanimously approved by Covanta’s board, will be financed by EQT Infrastructure V and is expected to close by year-end; EQT said it plans to invest in operational, digital and sustainability initiatives to grow Covanta's waste processing, energy production and metals recycling businesses.

Covanta Acquires Circon Holdings from Kinderhook Industries

May 1, 2023

Environmental Services

Covanta has entered into a definitive agreement to acquire Circon Holdings, Inc., a Kinderhook Industries portfolio company, in a transaction that adds more than 600 employees and some 2,500 customers to Covanta's platform. The acquisition (subject to customary regulatory approvals) significantly expands Covanta's wastewater footprint, multiplies its engineered fuels business, and broadens its Gulf Coast and Midwest geographic presence.

Evoqua Water Technologies Acquires Frontier Water Systems

April 4, 2022

Environmental Services

Evoqua Water Technologies purchased the remaining equity of San Diego-based Frontier Water Systems, completing its acquisition after an initial majority investment in 2019. Frontier, a supplier of modular bioreactor engineered equipment for removal of selenium, nitrate and metals from industrial wastewater, will expand Evoqua’s advanced wastewater treatment capabilities; terms were not disclosed.

Conestoga Energy Acquires SAFFiRE Renewables

August 14, 2025

Renewable Energy

Conestoga Energy has acquired SAFFiRE Renewables, LLC from Southwest Airlines Renewable Ventures LLC, obtaining SAFFiRE’s IP, certain technologies, a proposed pilot production facility, and key technical staff. The acquisition gives Conestoga access to SAFFiRE’s DMR pretreatment technology to produce ultra-low carbon intensity ethanol for sustainable aviation fuel (SAF) and supports plans for a co-located pilot in Liberal, Kansas and future commercial-scale production.