Subterra Renewables Acquires Earth Drilling Co. and Harris Exploration to Expand Geothermal Drilling Coast-to-Coast

ConeTec Group Acquires Geotech Drilling Services

January 16, 2024

Industrial Services

ConeTec Group, a Canada-based site characterization services leader, has acquired Geotech Drilling Services Ltd., a British Columbia–headquartered geotechnical, environmental and exploration drilling contractor. The acquisition combines the companies' drilling and testing capabilities to expand ConeTec's service offering and geographic reach across Canada and internationally.

EIS Holdings Acquires Tierra Consulting Group

May 20, 2025

Environmental Services

EIS Holdings, LLC has acquired Tierra Consulting Group, LLC, a Pompano Beach, Florida–based environmental consulting and groundwater treatment specialist. The deal expands EIS's presence in the Southeast and adds high-volume groundwater treatment, dewatering, subsurface remediation, surveying and mapping capabilities to its nationwide environmental and infrastructure services platform.

ERA Partners Acquires Majority Stake in GeoTility Systems Corp.

February 9, 2026

Renewable Energy

ERA Partners LLC announced a majority equity investment in GeoTility Systems Corp., a Kelowna, British Columbia–based geoexchange utility provider that offers heating-and-cooling-as-a-service (HCaaS) and full design-build geoexchange solutions. The investment is intended to accelerate GeoTility’s expansion across Canada and the United States, scaling its portfolio (more than 1,000 HCaaS systems) and expanding deployments to residential, multi-family, commercial, and industrial real estate.

SubTerra Engineering Acquires Cavern Solutions Inc.

March 10, 2025

Energy

SubTerra Engineering Corporation, a Calgary-based subsurface EPC firm, has acquired Houston-headquartered Cavern Solutions Inc., a specialist in underground salt cavern, reservoir storage and disposal engineering. The deal expands SubTerra’s capabilities and geographic footprint across North America, strengthening its offerings in underground storage, disposal, carbon capture and hydrogen projects.

Certerra Acquires Tierra, Inc.

March 27, 2025

Engineering Services

Certerra, a technology-enabled testing, inspection and certification platform backed by OceanSound Partners, has acquired Tierra, Inc., a Tampa-based geotechnical and materials engineering firm with 27+ years of experience and over 210 employees. The deal expands Certerra's presence and capabilities in the U.S. Southeast—adding laboratory and field testing capacity in Tampa, Orlando and Pensacola—and will enhance service offerings to government, transportation, municipal and commercial infrastructure clients.

Venterra Group Acquires Oceanscan Holdings

October 23, 2024

Energy

Offshore wind services provider Venterra Group has acquired the Oceanscan Holdings group, adding subsea and non-destructive test equipment hire, geotechnical services and specialist personnel capabilities. Oceanscan is headquartered in Aberdeen, Scotland, with subsidiaries in Houston and Singapore and four UK operating subsidiaries; the deal expands Venterra's capabilities in offshore wind and related energy markets.