Electrical & Mechanical Construction
ESA companies deliver the electrical, mechanical, HVAC, fire protection, fabrication and control-system work that keeps industrial and large commercial facilities operating.

Industrial systems and facility infrastructure under one coordinated approach.
Complex facilities do not need isolated trades working in silos. They need coordinated execution across power, controls, process systems, HVAC, fire protection, fabrication and commissioning. ESA companies support the systems that keep plants, campuses, commercial buildings and industrial environments functional.
Through Nitro Construction Services and related specialty companies, ESA supports new construction, facility expansions, maintenance programs, outage and shutdown work, modernization and emergency response. The result is a practical multi-trade capability built around safety, schedule discipline, technical execution and operational reliability.
Built For
Industrial facilities, large commercial buildings, manufacturing plants, campuses, process environments, power facilities and mission-critical assets.
Project Environments
Active production sites, shutdowns, outages, expansions, new construction, occupied buildings and highly controlled operating environments.
ESA Advantage
ESA can coordinate electrical, mechanical, HVAC, fire protection, fabrication, coatings, controls and technology work through specialized companies and service teams.
Key Work Includes
- Industrial and commercial electrical construction
- High-voltage and low-voltage power distribution
- Duct banks, switchgear, transformers, MCCs and generators
- Instrumentation, controls, calibration, loop checkout and commissioning
- Structured cabling, industrial networking, access control, AV and technology systems
- Mechanical piping, process piping, code welding, vessel repair and equipment setting
- HVAC installation, maintenance, refrigeration, hydronic piping and duct systems
- Fire protection design, fabrication, installation, inspections and monitoring
- ASME/NBIC fabrication, skid packages, pressure vessels and shop support
- Building automation, HVAC controls, system integration and optimization
Operating Companies Supporting This Capability

Nitro Construction Services
Nitro is the core ESA company for multi-trade electrical and mechanical construction. Its services span electrical, mechanical, HVAC, fire protection and fabrication, supported by union-trained electricians, pipefitters, HVAC technicians, millwrights and fabricators.

Nitro Electric
Nitro Electric extends the platform with commercial and industrial electrical services, instrumentation, technology services and building automation. Its work supports facilities that need reliable electrical infrastructure and connected systems.

Heritage Painting
Heritage Painting supports electrical and mechanical projects when coatings, surface preparation, structural steel coatings, equipment coatings, floor systems or facility repaint programs are part of the scope. Its connection with Nitro strengthens ESA’s ability to finish and protect facility infrastructure.

Rigney Digital Systems
Rigney Digital Systems brings HVAC controls and building automation expertise to commercial, educational, institutional, government, mission-critical and industrial environments. Its work helps owners improve comfort, energy efficiency, operational performance and system visibility.
ESA’s structure allows the organization to deliver both specialized expertise and coordinated execution across multiple project types.
Coordinated Execution
One platform for complex facility systems.
ESA’s electrical and mechanical capability is built for projects where systems affect one another. Power feeds equipment. Automation controls environments. Piping supports process flow. HVAC maintains comfort and production conditions. Fire protection and monitoring safeguard people and assets.
Build
Deliver electrical, mechanical, HVAC, fire protection and fabrication scopes for new construction, expansions and upgrades.
Integrate
Connect controls, instrumentation, building automation, technology infrastructure and system commissioning.
Maintain
Support preventive maintenance, shutdowns, outages, troubleshooting, repairs and emergency response.

Industries and Asset Types Served
ESA capabilities support projects across multiple industries including:
Natural Gas & Energy
Power Generation
Water & Wastewater
Chemical Processing
Industrial & Manufacturing
Related Capabilities
ESA’s structure allows projects to be supported across multiple operating companies when required.
Industrial & Commercial Construction
For facility construction, building upgrades, coatings, controls and site support.
Natural Gas Infrastructure
For facility piping, fabrication and energy infrastructure support.
Civil Construction & Site Development
For foundations, excavation, access, site preparation and restoration.
Rather than operating as isolated contractors, ESA companies can work together to support larger and more complex projects.
Keep essential utility systems moving.
Whether the scope is a distribution replacement, facility upgrade, emergency repair or coordinated multi-discipline project, ESA can connect you with the operating company built for the work.
