TransTech - ASME Fabrication - Pressure Vessels - Heat Exchangers - Reactors - Columns & Towers - Storage Tanks
BENDEL+Tank & Heat Exchanger
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Maddox Industrial Group - Industrial Solutions Specialist



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Energyneeering (ESI) is Founded

1 - Benny Benson founder of Energyneering Solutions - ESI

Benny and Julie Benson were searching for a new way of life after leaving California in 2006. They found it in Sisters, Oregon where they established the headquarters for an engineering company that now builds and manages renewable energy power plants and renewable natural gas (RNG) facilities across the U.S., Mexico—and as far away as South Korea.


Energyneeering (ESI) Purchases the Sisters Airport, enhances rapid response O&M services

ESI buys Sisters Airport

In 2017, the decision was made to annex the Sisters Airport to ESI's property holdings, following in overwhelming majority vote by the citizens of Sisters. The airport provides ongoing benefit to the community while supporting ESI's rapidly expanding business needs.

Maintaining an airport at our headquarters facilitates efficient travel and supports rapid, responsive service for any urgent needs of our O&M clients.


Energyneering (ESI) parent, TransTech, partners with Bridge Industries to accelerate growth

BRIDGE partners with TransTech - ESI parent company

In addition to providing initial capital investment, Bridge has been a pivotal partner providing both industry knowledge depth and world-class strategic support towards expansion.


TransTech Acquires ESI, extending Biogas, RNG solutions with advanced fabrication capabilities and more

TransTech Acquires ESI

TransTech is a leading provider of custom engineered and fabricated solutions for gas and liquids processing, storage, transfer and utilization across multiple industries, including a growing footprint in the Renewables space.  In addition to TransTech's custom fabrication solutions, ESI's customers will benefit from TransTech's complementary services, resources, and geographic presence. 


TransTech Acquires Maddox Industrial Group (MIG) to Accelerate Platform Growth, Enhance MRO Services

Maddox Industrial Group - Cryogenic Services - Mechanical Services - Air Separation MRO
Maddox Industrial Group - Cryogenic Services - Mechanical Services - Air Separation MRO

MIG is a prominent industrial MRO solutions specialist with industry-leading expertise in air separation and process piping systems, serving essential industries including manufacturing, air separation, water/wastewater treatment, food & beverage, pharmaceutical, semiconductor, and others.


Energyneering Becomes ESI

Energyneering Changes name to ESI

The market had informally rebranded us as ESI years ago. As the biogas industry matured and grew and we've continued to expand solutions and capabilities that mitigate new complexities and streamline biogas LFGTE and RNG project execution, simplifying our name to reflect ESI's one-stop, end-to-end solutions just made sense!