About RESA Power

RESA Power is the premier national provider of mission-critical solutions for electrical power systems to address system safety, reliability, operability, and efficiency. We have provided electrical solutions to thousands of companies throughout the United States and Canada on both a routine and a 24/7/365 basis since 2003.

We are the experts in servicing major power distribution and control equipment and have one of the largest inventories of vintage and hard-to-find components in the industry. Partnering with RESA Power enables you to extend the life of your power distribution and control equipment through utilizing our predictive and preventative maintenance programs.

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Our Mission

We are focused on delivering value to our customers by offering reliable and safe mission-critical power system solutions. As our motto states – “Reliable and Safe. ​​​​​​​The Power of Us” – we perform our job responsibilities safely, efficiently, thoroughly all day and every day with safety and reliability at the core of our culture.

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National Footprint

At RESA Power, we combine the national access and expertise of a large-scale provider with the speed and service quality of a trusted local partner. Our national footprint (20+ Businesses in more than 20 locations across the U.S. and Canada) enables us to deliver a consistent level of expertise and power services wherever our customers are located. To view the current RESA Power locations and service areas, just click on the map below. Please check back often, we are constantly growing.

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Power Heritage

Our company started in 2003 when Relectric Supply Company, LLC, our Components subsidiary, was founded in San Jose, CA. Over the next 10 years, in response to customer demand and market opportunity, the business expanded to include electrical testing and engineering services. Due to multiple acquisitions by 2016, our portfolio of companies was significantly expanded to include Switchgear Unlimited (Plant City, FL), DYMAX Services (St. Paul, MN), Energy Systems Services (Stow, OH), West Coast Switchgear (Cerritos, CA), and Transformer Testing and Repairs (Fairfield, CA).

Since then, many great companies have joined the RESA Power family and we now total over 20 locations across the USA and Canada that enable us to serve customers nationwide as a full-service provider of electrical power systems solutions.

We are now widely regarded as the “Acquirer of Choice” within our industry and expect to welcome many more companies into our fold over the next few years. If you would like more information about joining with RESA Power, please fill in our online form. (link to the acquisition page).

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RESA Empowered

Originally, back in 2012 name “RESA” came from the combination of two company’s names – Relectric (founded in 2003 in San Jose, CA) and Satin American (founded in 1928 in Shelton, CT) – which laid the foundation of our company.

Over time, RESA has grown significantly and increased the significance of its meaning, and we believe that our current motto accurately represents how we now are in the present – “Reliable and Safe. ​​​​​​​The Power of Us”.


From engineering and design to installation and electrical maintenance and testing services, RESA Power is your premier supplier of end-to-end solutions for all your power equipment needs.

Workplace Safety

Industry leading Safety Culture ensures our employees are well equipped to work safely in our facilities on at customer sites.

Tailored Solutions and Service Quality
Customized solutions for our customers’ unique power system’s needs.

Holistic Solutions Offering

The comprehensive suite of PD&C needs for power system safety, reliability, and efficiency.

National Reach

National footprint (21 Businesses in 21 locations across USA and Canada) enables broad reach and ensures timely service delivery.

Technical Expertise and Reliable Equipment

Ensures customers meet increasingly stringent regulatory & insurance needs.

Hard-To-Find Vintage Component Inventory
Provider of new, reconditioned, and obsolete circuit breakers, electrical distribution, and control equipment from our vast inventory.

Highly Skilled NETA Certified Technicians
Our RESA Power Service subsidiary provides preventive NETA-certified maintenance and acceptance testing services of both new and existing power components and systems.

Transformer Oil Testing Lab Services
Our laboratory offers a full range of transformer oil tests in accordance with ASTM Standard Test Procedures and diagnostic recommendations are based on IEEE Standard guidelines. Free of charge access to the RESA Power Transformer Assessment Portal (RESA TAP). (link to TAP)

Certifications and Licenses
Ability to serve and distribute to large regional and national accounts.

Learn More About RESA POWER Services

Electrical Testing & Diagnostics


Electrical Testing & Diagnostics
Maintenance & Repair
Acceptance Testing
Engineering Studies

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Maintenance & Assembly


Maintenance & Assembly
Coil Rewinding
Oil Testing Services
New & Used
Transformer Sales

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Remanufacture & Custom Build


Remanufacture &
Custom Build of
Infrastructure &

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Broad Inventory of Electrical Equipment


Broad Inventory of
Electrical Equipment &
Components Including
Older Vintage &

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