High Voltage Systems | Electrical Services & Solutions

High-voltage electrical substation with SF₆ circuit breakers, transformers, and switchgear equipment under a clear blue sky

Medium & High-Voltage Expertise Overview

Deliver medium and high-voltage power solutions with ease.

At Cummings Electrical, we provide medium and high-voltage solutions for facilities that require power beyond standard building systems, including industrial plants, utilities, and renewable energy farms. Our expertise ensures safe, efficient, and reliable power distribution for complex and large-scale operations. From designing and installing substations and transformers to maintaining high-voltage systems, we deliver robust solutions that support your infrastructure’s energy demands.

Ground-Up Construction

Install custom electrical solutions for your non-standard voltage requirements.

For ground-up construction builds, we provide medium and high-voltage solutions tailored to large industrial complexes, utility interconnections, and high-capacity data centers. Our expertise includes designing and installing robust electrical systems—such as substations, transformers, and high-voltage connections—to meet demanding power requirements.

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Retrofitting & Upgrades

Upgrade your power distribution to enhance your facility's efficiency.

Our medium and high-voltage renovations and retrofitting include HV cable terminations, switchgear installation, and substation construction, all designed to meet utility-grade standards. These upgrades improve power distribution, enhance system reliability, and ensure compliance with industry regulations. With a focus on safety and performance, our expertise supports critical operations and provides long-term, reliable power to facilities such as industrial plants, data centers, and utility connections.

Outdoor view of a high voltage substation

Modular Solutions

We empower high-demand operations with medium & high-voltage solutions.

Cummings Electrical excels in delivering robust medium and high-voltage power solutions for facilities that require energy beyond standard building systems. Our expertise encompasses the design, installation, and maintenance of complex electrical infrastructures—including substations, transformers, and high-voltage connections—ensuring safe, efficient, and reliable power distribution for large-scale operations.

Whether it's a ground-up construction of an industrial plant, a utility interconnection, or a high-capacity data center, our team provides customized solutions tailored to meet demanding power requirements. By integrating advanced engineering practices with pre-tested components, we minimize on-site construction time and ensure seamless integration with existing systems. Trust Cummings Electrical to empower your operations with scalable, energy-efficient, and future-ready power solutions.

Close-up view of high-voltage substation equipment under a blue sky

River Bend Solar - 80 MW

Executed EPC of a 161kV-34.5kV substation with prefabricated control room and TVA switchyard connection—energizing 640 acres.

High-voltage substation located near a school campus surrounded by protective fencing

SMU Substation & Distribution

Built a 138kV-34.5kV substation with dual feeders, switchgear building, and over 900 terminations—upgrading SMU’s electrical backbone.

Wide-angle, sunset view of a large utility substation with multiple transformers and switchgear structures

Old Settler Cotton Plains Substation

Built a 345kV-34.5kV substation and tied into the ERCOT grid—supporting GE turbines and clean energy delivery.

Aerial view of the Knauf insulation manufacturing facility with vertical silos, smokestacks, and active site development

Knauf Insulation MV Switchgear and Transformer Installation

Adeptly navigated medium voltage transformer and switchgear installations, overcoming infrastructure challenges and scope adjustments to ensure reliable power distribution for critical manufacturing processes.

Kohler Co. Brownwood Medium Voltage Electrical Installations

On the plains of Brownwood, power lines weave through the plant, steady and true, as skilled hands replace feeders and reroute lifeblood cables to keep the gears of industry humming strong.

Power Distribution Design & Installation

Create reliable medium and high-voltage electrical systems that reduce downtime and support streamlined communication.

Compliance & Safety

Prioritize the safety, legal adherence, and long-term operational reliability of your medium and high-voltage environments.

Emergency & Maintenance Services

Support your facility's medium and high-voltage environments with 24/7 emergency and maintenance services.

Switchgear Installation & Maintenance

Install and maintain high-voltage switchgear to protect electrical equipment from overloads and faults.

Modular Solutions

Deploy pre-built modular solutions for fast, efficient installation.

Utility Interconnections

Manage connections to utility grids, ensuring smooth integration and compliance with local utility regulations.

Discuss Your Project

Speak with our team today to discuss your project, timeline, and pricing options.

Discuss Project

Explore Careers

Browse current openings and learn more about the company culture at Cummings Electrical.

Explore Careers

Our commitment to exceeding clients' expectations drives our vision for the future.

In alignment with our core values, we believe in embracing innovation and continuous improvement. As a team, we iterate on our technical achievements and adapt to industry changes. We operate with a precision-driven methodology and focus on sustaining long-term partnerships with clients through responsive and adaptable service delivery fueled with reliability and excellence.

Explore Our Approach

Explore Our Safety Protocols

Two construction workers smiling for a photo in an unfinished building, showcasing teamwork and progress on the site

Our passion areas fuel our innovation and excellence.

As we've built our business, we've developed a philosophy rooted in the understanding that each industry has unique needs when operating in live environments and existing facilities. By focusing on passion areas, we ensure that resources are not only trained in the technical execution of a project but also equipped to understand and navigate the operational complexities of working in live environments.

Explore Our Passion Areas

Meet the professionals who are passionate about voltage solutions and well-equipped to help your projects thrive as an extension of your team.

Shane Cranford, PE

Vice President, Engineering

Shane is a seasoned electrical engineering leader with over 25 years of experience, primarily at Cummings Electrical. His expertise, developed through a decade in consulting engineering, has enabled him to excel in high-stakes projects across various sectors.

Leadership in Engineering: Oversees Design-Build, Design-Assist, and Power System Studies, emphasizing innovation and cost-effectiveness
Collaboration Focus: Strong commitment to working with stakeholders to align with project visions and ensure optimal outcomes
Strategic Leadership: Demonstrates how effective leadership in electrical engineering can blend innovation, efficiency, and collaboration

“Everyone I work with here at Cummings Electrical has a positive influence on my career. I have a great support system in Engineering, Service, and Construction.”

Mark Harko

Strategic Account Manager

Mark Harko is a seasoned electrical leader with over 48 years in the trade, including 30 years with Cummings Electrical. His experience spans nearly every sector, from hospitals and data centers to heavy industrial plants and aviation facilities. Harko is known for delivering effective results without disruption, bringing deep technical expertise and steady leadership to every project.

Leads with confidence earned from decades of field experience and hands-on execution
Specializes in large-scale infrastructure and high-voltage power systems
Earns client trust by delivering consistent results while executing critical upgrades

“You’ve got to know what the client wants. I know how to do the work, but I need to know what’s critical to them—then I plan around it.”

Eder Morales

Strategic Account Manager

Eder is an electrical expert with over 20 years of hands-on experience across a wide range of industries including data centers, industrial and commercial facilities, healthcare environments, and airports. Eder leads with a field-first mindset, building successful teams by prioritizing safety and creating the trust needed to keep projects moving, respond quickly to challenges, and deliver exceptional results for clients.

Keeps projects on track through proactive planning and clear communication
Electrical expert with 20+ years of experience across complex, challenging environments
Believes that every successful job begins and ends with the safety of every team member

“If you’ve got a good project team, a good field team, and time to plan—you’re hard to beat. If you’re just reacting, you’re already behind.”

Andrew Kleinfeldt

Strategic Account Manager

Andrew has been with Cummings Electrical since 2009, bringing a passion for mission-critical work and an in-depth understanding of data center systems. Known for his technical fluency and strong communication skills, he emphasizes safety, clear procedures, and a culture of excellence to ensure smooth project delivery.

Skilled at translating between technical and operational teams to maintain alignment
Prioritizes safety and clear processes to keep projects on track
Seasoned electrical professional with over 15 years of experience

“Communication is the key to a success. When the relationships are strong and everyone’s on the same page, the project moves forward smoothly.”