Stop Building Panels: Continue Building What You Build Best
Monday, May 11, 2026
A Manufacturer’s Guide to the Make-or-Buy Decision for Electrical Power Distribution Panels
Part 1 of 3
Figure 1. The Tuesday-morning scenario every manufacturer recognizes.
Introduction
Picture this. It’s a Tuesday morning, and your production floor is humming along. Hulls are being laid, engines are getting dropped in, and your team is moving at a solid pace. Then someone walks over and says, “Hey, we’re out of the 15-amp breakers for the AC panel.”
Just like that, everything stops. Not the whole plant, of course. But that one boat or specialty vehicle build? It’s going nowhere today. Your purchasing agent is already on the phone trying to track down a replacement. Your electrician is standing around with nothing to do. And the delivery date you promised your customer? That’s now a conversation nobody wants to have.
If you’ve been in manufacturing long enough, this scenario isn’t hypothetical. It’s a Monday. Or a Wednesday. It’s the kind of disruption that never shows up on a spreadsheet but quietly eats into your margins, your timelines, and your team’s morale.
And here’s the thing: it almost always traces back to one decision that was made so long ago, nobody even questions it anymore. The decision to build your own electrical panels in-house.
Why We’re Writing This
At Paneltronics, we’ve been designing and manufacturing electrical power distribution panels and electrical distribution units for over 47 years. In that time, we’ve worked alongside boat builders, specialty vehicle manufacturers, and OEMs of all sizes, from small shops running ten units a year to production lines pushing hundreds.
One conversation comes up more than any other: “We’ve always built our own panels. Why would we change now?”
It’s a fair question. And honestly, for some manufacturers, building in-house might be the right call. But for many others, it’s a decision that was made years ago under very different circumstances, back when volumes were lower, boats were simpler, and components were easier to source. The industry has changed, and the math behind that original decision may not hold up the way it once did.
This blog isn’t a sales pitch. It’s a conversation. The kind you’d have over a cup of coffee at a trade show or during a walk through the plant floor with a colleague. We want to lay out the real factors, such as the numbers, the risks, and the strategic considerations, that go into the make-or-buy decision for electrical panels. That way, whether you decide to keep building in-house or partner with a specialist, you’re making that choice with the full picture in front of you.
What We’ll Cover
In this first installment, we’ll explore the true costs of building electrical power distribution panels in-house. Not just the price of the breakers and wire; your accounting team already has those figures. We’re talking about the hidden costs that don’t appear on the bill of materials, such as the procurement burden of managing dozens of vendors, the carrying cost of safety stock sitting on your shelves, the engineering hours spent troubleshooting wiring logic, and the warranty exposure when something goes wrong downstream.
Figure 2. The BOM is the tip. The hidden costs are everything underneath.
In Part 2, we’ll dig into the real costs that don’t show up on the bill of materials, from the procurement burden to inventory carrying costs and warranty exposure. Then in Part 3, we’ll explore the partner approach: what it actually looks like to work with a dedicated panel manufacturer, how the hybrid model works in practice, and the questions you should ask when evaluating whether to make or buy.
Figure 3. Where this post sits in the three-part series.
Whether you’re an engineer evaluating your current panel designs, a purchasing agent tired of chasing down backordered components, or a decision-maker looking at the big picture, this one’s for you.
Want to see what your next build looks like with one part number instead of forty?
Our sales team has been having this conversation with OEM manufacturers since 1979. If you're thinking it might be time to have it on your end, we're here.
sales@paneltronics.com or visit us at www.paneltronics.comcom
Let’s get into it. (Link to part 2)
About the author
Edwin (Ed) Robledo — Paneltronics Senior Technical Marketing. 10+ years of published content creation and technical writing in the electrical and electronics industry, including articles and white papers on circuit, electrical design, and engineering best practices.
In collaboration with: Pedro Pelaez, President of Paneltronics, and
DRAFT | Part 1