Transmission & Distribution Engineering Services

Serving utilities, contractors, and infrastructure firms across Arizona and the Southwestern U.S. since 1987.

  • SDVOSB Certified
  • 35+ Years · Since 1987
  • APS & SRP Standards Experience
  • 24–48 hr Response
ARUSI field crew performing transmission line work on a utility corridor in Arizona

Infrastructure keeps communities and businesses running. Somebody has to get the engineering right.

At ARUSI, we believe the work matters beyond the deliverable. We’re a Service-Disabled Veteran-Owned engineering firm built on accountability, technical precision, and showing up for our clients when the schedule is already under pressure. That’s not a value statement on a wall. It’s what 35 years of utility work in Arizona has required of us.

If you’re looking for a firm that already understands your standards, responds fast, and treats your schedule like their own, you’ve found it.

— How We Work

What Makes Working With ARUSI Different

Most T&D engineering firms deliver drawings. ARUSI delivers project momentum. That's the difference clients notice first, and it's the reason they come back.

01

We already know your standards.

We've supported APS and SRP projects long enough to know their review cycles, drafting standards, and BOM expectations from the inside. When we start on your project, we're not learning your workflow. We're already in it.

02

We're built for projects under pressure.

When your schedule is slipping, we respond within 24 to 48 hours and can integrate into active projects within days. We've structured ARUSI specifically to support schedule recovery, not just stable-state work.

03

Less management burden on your team.

Clients consistently note they spend less time managing ARUSI than previous vendors. Fewer missed updates, fewer corrections, fewer conversations about why something was delivered the wrong way. This pattern shows up most on long-running SRP program accounts.

04

Engineering and drafting that actually connect.

Our engineering, CAD drafting, utility coordination, and QA/QC functions work together inside one team. That integration reduces the disconnects that happen when disciplines are siloed and design intent doesn't reach the field.

— What We Do

Transmission & Distribution Engineering Services

We support the full range of T&D engineering and design work, from single structure assessments to multi-year utility programs.

5kV – 500kV

Transmission Line Design

Engineering and design from 5kV to 500kV. Overhead corridors, structure replacements, reconductoring, OPGW integration, PLS-CADD modeling coordination, clearance analysis, and construction support documentation.

Overhead + Underground

Distribution Engineering

Overhead and underground distribution design for utility modernization, new line extensions, cable replacements, and capital improvement programs. Deliverables include construction-ready drawing packages and BOM integration.

Single + Multi-Agency

Permitting & Utility Coordination

Permit-ready packages for single-jurisdiction and multi-agency environments. We handle utility coordination, agency response support, and construction license documentation across Arizona and the Southwest.

Rapid Response

Construction Support Engineering

Rapid-response engineering during active construction: redline incorporation, field-driven revisions, clearance and loading verification. Structured for compressed timelines.

— The Engagement

How a Typical ARUSI Engagement Works

No ambiguity about how the work starts or how it moves. Here's what to expect.

1

Initial contact and scope discussion

We respond within 24 to 48 hours. Before we scope anything, we want to understand your schedule, your constraints, and what's already in motion.

2

Proposal and alignment

Within 2 to 10 business days. Deliverables, staffing, timeline, and assumptions are defined clearly so there are no surprises once work begins.

3

Kickoff

Project managers and technical staff are assigned. QA/QC workflows are established. Communication cadence is confirmed. You know exactly who is working on your project.

4

Engineering and production

Engineering, drafting, utility coordination, and QA/QC run in parallel. We keep you informed of progress, risks, and decisions that need your input before they become problems.

5

Review cycles and revisions

We turn revisions fast. Redline incorporation and utility comment responses are core to our workflow, not an afterthought.

6

Final delivery and construction support

Deliverables are reviewed against utility standards before submission. Construction support continues as needed after delivery.

69kV transmission corridor with OPGW stringing on existing structures
— A Real Project

69kV Transmission Upgrade & OPGW Integration

Would OPGW upgrades across hundreds of structures require widespread pole replacement — or could existing infrastructure be preserved? Regional Arizona Electric Utility

The Situation

A regional Arizona utility was managing multiple active 69kV transmission corridors simultaneously. Their internal engineering team was at capacity. Construction schedules were aggressive. And a critical question needed answering fast: would OPGW upgrades across hundreds of structures require widespread pole replacement, or could existing infrastructure be preserved?

What ARUSI Did

We provided engineering and design support across multiple corridors, including PLS-CADD model updates, structure loading evaluation, drawing revisions, and rapid-response support during active utility review cycles.

The Outcome

By evaluating actual loading impacts against existing infrastructure, ARUSI identified cases where pole replacement was not required, reducing construction scope, material costs, outage coordination complexity, and schedule exposure. Critical construction and review schedules were maintained across multiple concurrent projects.

— Answers

Frequently asked questions

Yes. ARUSI is a Verified Veteran-Owned Small Business (VOSB) through the U.S. Department of Veterans Affairs and operates as a Service-Disabled Veteran-Owned Small Business. The firm also holds DBE and SBE certifications.

ARUSI's CAGE code is 1GLB7 and its UEI is FDBFPH8XWBU3. Both are current and used for federal contracting and registration.

ARUSI provides transmission line design, electrical distribution engineering, telecommunications design, survey services, CAD and drafting, utility engineering and consulting, architecture and engineering, and construction management. The firm serves utility and telecommunications clients across the Southwest.

ARUSI's primary NAICS codes are 541330 (Engineering Services), 541340 (Drafting Services), and 541370 (Surveying and Mapping Services). It also works under 237130 (Power and Communication Line and Related Structures Construction).

ARUSI is headquartered in Phoenix, Arizona, at 4720 E Cotton Gin Loop #140, Phoenix, AZ 85040. It has served clients across Arizona and the Southwest since 1987.

Yes. ARUSI's SDVOSB status and enterprise certifications let national firms meet set-aside and small-business goals while keeping local engineering depth on the team. ARUSI bids as both prime and subcontractor.

— Trust Signals

Certifications & Credentials

SDVOSB
Service-Disabled Veteran-Owned Small Business
DBE
Disadvantaged Business Enterprise — Arizona Unified Certification
SBE
Small Business Enterprise — City of Phoenix
— Get Started

Ready to Talk About Your Project?

Whether you need overflow support, a long-term program partner, or rapid-response engineering on a project already in motion, ARUSI is ready to engage.

We respond within 24–48 hours.