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Electrical Engineering Design Services

Reliable electrical engineering designs engineered with efficiency and long-term performance in mind.

Electrical Design Solutions That Work in the Field

At Trefz, we design electrical systems built for constructibility and long-term reliability. Our designs are created for the realities of the field, ensuring smooth installation, dependable operation, and lasting performance without sacrificing safety or efficiency. Our in-house process ensures seamless integration across M/E/P/FP systems, reducing risk and driving efficient project delivery.

Scope of Electrical Engineering Design Services

We deliver full-service electrical design engineering for new buildings, remodels, and systems optimized for performance, safety, and efficiency

  • Emergency & Standby Power Systems
  • Fire Alarm Systems
  • Lighting Design
  • Power System Design
  • Lighting Control & Day Light Harvesting Systems
  • Substation Design
  • Site Infrastructure
  • Power Quality Studies
  • Power Systems
  • Grounding and Bonding
  • Data Centers
  • Fire Pump Power Systems
  • Condition Assessments
  • Building Load Systems

Our team guides electrical systems from early planning to full operation, delivering reliability, efficiency, and seamless integration at every stage.

Engineering Solutions with a Construction Mindset

We bring both technical expertise and construction insight to every project, ensuring designs that work in the real world. Our designs anticipate how systems will be installed, maintained, and expanded to reduce risk, avoid delays, and give stakeholders confidence from day one.

  • Proactive collaboration that keeps teams aligned and informed
  • Seamless in-house integration across M/E/P/FP disciplines
  • Designs that balance innovation with constructibility and cost certainty
  • Future-focused planning for scalability, sustainability, and longevity

We simplify complex projects, reduce rework, and deliver solutions that perform as promised.

Designed for Long-Term Reliability

Designed with the operators and owners in mind.

Our electrical systems are engineered for long-term dependability. From maintenance and scalability to efficiency and safety, we look beyond day-one performance to anticipate future needs. Each system is carefully designed and tested to ensure consistent operation, minimize downtime, and perform reliably under real-world conditions.

Each electrical system is designed to:
  • Allow safe, easy access and maintenance
  • Perform reliably today while adapting seamlessly to future needs and evolving system demands.
  • Maximize efficiency and support sustainability targets

We don’t step away once engineering is complete. We remain engaged through commissioning and beyond, ensuring systems work exactly as intended for years to come.

Our Team

We blend expertise, passion, and genuine collaboration to deliver exceptional results.

We see every project as an opportunity to learn and innovate. Our engineers are more than technical experts, they’re enthusiastic problem-solvers who embrace open dialogue and hands-on collaboration to tackle complex challenges. We believe that true innovation comes from collaboration, transparency, and mutual respect. By placing your goals at the forefront, we remain focused on delivering solutions that function reliably and stand the test of time, supporting your organization well into the future.

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Substation 4 Replacement at UPENN

Higher Education

University of Pennsylvania MOD VII CWP Design & Expansion

Higher Education

Annenberg.5
Annenberg Center for the Performing Arts HVAC Upgrades

Higher Education

Let’s Talk

Looking for an electrical engineering partner who transforms complex challenges into reliable, buildable solutions?