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Rapid City Electrician | Family-Owned Since 1999 | Wires R Us
Serving Spearfish SD
Second-generation electricians trusted by Black Hills builders serving Spearfish with new construction electrical, panel upgrades, EV chargers, and generator installs.
1999
Serving the Black Hills since
2nd Gen
Family-owned and operated
25+ yrs
Wiring homes across the region
5 Star
Reputation built on referrals
Residential Home Lighting
Commercial Projects
We have a reputation of excellence throughout Spearfish and the surrounding Black Hills. Contractors can instantly tell Wires R Us has been on site, leaving clean, easy to inspect quality work each and every time.
Solar - EV - Generators
When Spearfish homeowners look for a generator backup system, EV charger, or solar setup and need an installer that will do it right, on time, and without a fuss, they call us. We easily explain and kindly help.
What Builders &
Homeowners Say
"I highly recommend Caulder. He surpassed our expectations. Punctual, extremely polite, and his vast knowledge quickly impressed us. He diagnosed our problem very quickly and with great professionalism."
"We enjoy having Wires R Us do the electrical on the custom homes we build. Their organization and wiring is both pristine!"
"The very first job WRU did was our job so many years ago. I have no idea how many jobs they have done for us since. They are the most efficient and proficient electrical company around. Highly recommended!"
Our Story
Wires R Us is a family-owned Spearfish electrical contractor serving homeowners and builders across the Black Hills since 1999. Founded by Donahue Williamson with a single van and a strong commitment to doing things the right way, we’ve grown into a proudly second-generation electrical company that still runs on the same core values: cleanliness, reliability, craftsmanship, and efficiency.
We specialize in residential new construction, multi-family wiring, panel upgrades, EV charger installation, and generator installs, bringing the same standard to every project: clean, code-driven work, reliable scheduling, and communication you can count on. From the I-90 corridor through Spearfish and into the Hills, our crews have wired hundreds of homes for some of the most respected builders in the region. We also serve homeowners and general contractors throughout Black Hawk, Piedmont, Sturgis, Spearfish, Belle Fourche, Hermosa, and Hot Springs.
What sets Wires R Us apart is the experience our clients have from the first phone call to the final inspection. Our crews show up when they say they will, run organized and efficient job sites, and leave every space cleaner than we found it. General contractors trust us with high-volume schedules because we hit deadlines without sacrificing quality. Homeowners trust us because we treat their property with respect and explain the work in plain language. When you’re looking for a Piedmont electrician who delivers professionalism, craftsmanship, and reliability on every project, you’ve found the right team.
Building the Future of Spearfish
Electrical crews that stay organized, communicate clearly, and deliver clean, code-driven work at scale.
Explore EV & Generator Options
Services
What we do Best.
Residential New Construction In Spearfish SD
Clean, efficient wiring for single-family homes.
Multi-Family & Apartments In Spearfish SD
Clean, efficient wiring for single-family homes.
Service Upgrades In Spearfish SD
(100A/200A/400A) Service Upgrades
You got questions. That's why we're here.
What types of electrical work does Wires R Us specialize in?
Wires R Us specializes in residential new construction and multi-family electrical work across the Black Hills region. Our crews are built to support tract home builders, and developers who need consistent scheduling, clean job sites, and dependable execution. We also provide select residential services such as panel upgrades, EV charger installations, RV outlets, lighting upgrades, and generator installs.
How is Wires R Us different from other electrical contractors?
We focus on making projects run smoother.
Quality isn’t just a word thrown around. We have the reputation to prove it (Read More).
Our teams are known for showing up when scheduled, working efficiently, keeping job sites clean, and communicating clearly throughout the project. We operate with organized systems that reduce mistakes, speed up timelines, and help general contractors avoid delays, rework, and coordination headaches.
Do you work with homeowners, or only builders and contractors?
While our primary focus is new construction and multi-family projects, we do work with homeowners for specific services such as EV chargers, service upgrades, panel swaps, and other professional-grade electrical installations. Homeowners who value clean work, clear communication, and long-term safety are a great fit for our team.
Are you licensed and experienced in the Black Hills region?
Yes. Wires R Us has been serving the Black Hills since 1999 and is now a second-generation electrical contractor. Our work is fully licensed, code-compliant, and built to pass inspections without surprises. We regularly work across Rapid City, Spearfish, Sturgis, Belle Fourche, Hot Springs, Hermosa, Black Hawk, and surrounding communities.
How do I know I can rely on your crew and schedule?
Reliability is one of our core values. We schedule realistically, communicate proactively, and follow through on commitments. General contractors continue working with us long-term because we keep projects moving, coordinate well with other trades, and eliminate the common frustrations that come with unreliable subcontractors.
Why tract home builders are important for us.
In the tract home builder world, demand is high. Standards are extremely high and scheduled are locked in. We work….
How reliable are the fixtures, devices, panels and breakers you install?
We choose products for long-term performance and low callbacks. In practice, that means we install brands that have shown consistent build quality, low failure rates, and good field support. For example, we prefer RAB, Maxim, and Cooper for lighting, Schneider Electric for panelboards and breakers, King Wire for SER service entrance cable, and Briggs & Stratton for standby generators because of their track records. Choosing reliable brands, installing them correctly, and inspecting connections during installation are the largest factors in long-term reliability.
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Electrical Resources for Spearfish Homeowners
Local guidance on generators, EV chargers, and electrical service upgrades from the Wires R Us team.
Wiring a Growing City: What New Construction in Spearfish SD Actually Demands
Spearfish is one of the fastest growing cities in South Dakota. From new subdivisions to canyon cabins and I-90 commercial builds, here is what that growth means for electrical planning.
Read the guide →Wiring a Growing City: What New Construction in Spearfish SD Actually Demands
New subdivisions, canyon cabins, and acreage properties all come with different electrical demands. Here is what builders and homeowners in Spearfish need to plan for.
Read more →What's Behind Electrical Power Surges in Your Home
Where power surges actually come from, which appliances and devices are most at risk, and what Spearfish homeowners can do to protect them.
Read more →Black Hills EV Charger Installation: What to Expect
A start to finish walkthrough of a residential EV charger install with Wires R Us, from the first site visit to final commissioning.
Read more →Planning a Safe EV Charger Installation
NEC requirements, continuous load rules, and the safety considerations every homeowner should understand before adding a Level 2 charger.
Read more →Which EV Charger Is Right for Your Home
Comparing the most common Level 2 chargers, charging speeds, and how to match the right unit to your vehicle and panel capacity.
Read more →Hardwired or Plug-In EV Charger?
The trade-offs between a hardwired install and a plug-in unit, including the heavy duty receptacle requirements unique to EV charging.
Read more →