Commercial Electric-Service Upgrade in Pinellas: GC Coordination

If you own or lease an older commercial building in Pinellas County and you’re planning to add modern load — a new HVAC system, restaurant kitchen equipment, EV chargers, medical or dental gear, a server room, or more — you may have already heard the phrase “you’re going to need a service upgrade.” That usually means the existing electrical service coming into the building is too small for what you’re about to plug in, and something has to change at the meter, the main panel, or both.

This is one of the highest-friction items in any commercial buildout, because it stitches together four separate parties: your licensed electrical engineer (EE), your licensed electrician, Duke Energy as the utility, and the general contractor coordinating everyone. This post is about what the GC actually does in that dance — what stays firmly on the EE’s desk, and how to plan your downtime so a two-week electric-service upgrade doesn’t blow up a three-month buildout.

We’re a St. Petersburg commercial general contractor. We coordinate service upgrades on commercial projects; we do not size electrical services, and we do not do the utility-side work. Talk to your EE and your Duke Energy account rep for any scope-specific decision.

Why do older Pinellas commercial buildings need a service upgrade in the first place?

Because the load profile of a small commercial building in 1975 looked nothing like the load profile of a small commercial building in 2026. The building was designed and served for the tenant it had — often a light-retail or office use with modest HVAC and lighting. Fast-forward to a modern restaurant, a boutique medical office, a mixed-use tenant with EV chargers, or a server-heavy tech tenant, and the connected load can easily double or triple. Your existing service — often in the 100-amp to 400-amp range on older single-tenant commercial — may not have headroom for the equipment you plan to install.

Your electrical engineer runs a load calculation using National Electrical Code (NEC) rules, factors in demand and diversity, and tells you whether the existing service is enough. If it’s not, they specify the new service size. That number — 400A, 600A, 800A, 1,000A, or higher — is not a GC decision. Your EE confirms.

What does the GC actually do in a commercial electric-service upgrade?

The GC is the coordinator, not the calculator. On a Revolution commercial project, our scope on a service upgrade generally includes:

Sequencing the EE, the electrician, Duke Energy, and any other affected trades so nobody is waiting on nobody
Pulling and tracking the electrical permit through the local building department (Pinellas County or the applicable city — St. Petersburg, Clearwater, Largo, Pinellas Park, etc.)
Scheduling and hosting inspections
Coordinating the physical panel-room work — demo, new panel location, framing, patching, fire-rated penetrations, code-compliant clearances
Owning the downtime plan with the tenant or owner: when power drops, for how long, and what stays on temporary power if anything
Keeping the rest of the buildout moving so the service upgrade isn’t the tent-pole holding up your open date

We’re not touching a wire. Every conductor, connection, and termination is on your licensed electrician’s ticket, sized by your EE, and inspected by the AHJ. Duke Energy handles everything from the transformer or drop to the meter.

What’s the typical sequence for a commercial service upgrade in Pinellas?

Every project varies — your EE and utility rep will confirm the specific sequence — but a common shape looks like:

Design and load calc. EE runs the calc, specifies the new service size, and stamps the drawings.
Utility coordination. The electrician (or GC on their behalf) opens a Duke Energy commercial service request. Duke reviews capacity at the transformer, tells you what they can deliver, and quotes any utility-side work (new transformer, secondary conductors, meter relocation).
Permit. Electrical permit filed with the local building department, plus any structural or mechanical permits if the panel move affects framing, fire-rating, or roof penetrations for the mast.
Long-lead ordering. Panels, switchgear, and utility-side gear can have real lead times. Order early.
Construction. Electrician does the internal work — new panel, feeders, distribution. GC coordinates any framing, patching, or trade sequencing around it.
Meter change and energization. Duke schedules the meter swap and re-energization. This is the downtime window.
Inspection and power restoration. AHJ inspects. Duke energizes. You’re back on.

Your utility rep will tell you the current queue for meter changes in the Pinellas service area; that queue moves. Build slack into your schedule for it.

How much downtime should we plan for during the service upgrade?

Long enough to matter, short enough to plan. On many commercial upgrades, the actual power-off window at the meter can be anywhere from a few hours to a full business day, depending on the scope of work at the meter, what Duke needs to do on the utility side, and how the electrician has staged the new equipment.

The bigger planning question is usually not the meter-swap window itself — it’s everything downstream. Refrigeration in a restaurant. Medical equipment with cold-chain requirements. Server rooms. Security systems. Life-safety systems. Your GC’s job is to build the downtime plan with you before the meter change is scheduled: what runs on temporary power (portable generator, temporary service), what shuts down cleanly, what needs to be restarted in what order, and who’s on site during the outage. Your electrician confirms what’s technically possible; your GC coordinates the calendar so it happens on a Sunday or a slow Tuesday instead of your Friday dinner rush.

What about Duke Energy — how does the utility piece work in Pinellas?

Duke Energy is the utility serving most of Pinellas County. For a commercial service upgrade, they typically handle:

Reviewing whether the existing transformer and secondary can handle the new demand
Any utility-side upgrades (new transformer, new drop, meter equipment)
Scheduling the meter change and re-energization
Providing the final service drop or underground service to the new metering point

Your electrician (and often the GC as scheduler) will open the Duke Energy commercial service request early. Duke’s process, timeline, and any cost-sharing on utility-side upgrades vary by project and by whatever their current commercial-service policies look like. Your Duke Energy account rep is the source of truth on this — do not take timelines and cost splits from a blog post, including this one. Confirm with Duke.

Where do the SME boundaries actually sit on a commercial service upgrade?

Fair question. Here’s the shape we use on every Revolution commercial project:

Licensed Electrical Engineer (EE): load calculation, service sizing, panel and feeder sizing, single-line diagrams, code compliance on the electrical design, stamped drawings.
Licensed Electrician: all physical electrical work — feeders, panels, grounding, terminations, per the EE’s stamped design.
Duke Energy: transformer, service drop, meter, utility-side capacity, energization schedule.
Revolution as GC: permit and inspection coordination, panel-room construction and clearances, trade sequencing, downtime plan with the tenant or owner, schedule and budget tracking on the overall buildout.

If a question sounds like “how many amps do we need” or “can we run this on the existing service,” that’s an EE question. If it sounds like “when can we shut the power off and for how long” or “who’s pulling the permit and when do we inspect,” that’s usually a GC-plus-electrician question, with Duke’s calendar in the mix.

What should you have in hand before hiring a GC for a service upgrade?

At minimum, some version of these:

A load estimate or preliminary load calc from your EE (even a rough one) so scope conversations are grounded
A clear list of the equipment driving the upgrade — kitchen equipment schedule, HVAC size, EV charger count and rating, server-room load, etc.
A general idea of your open date or occupancy target so downtime can be planned backwards from it
Any prior electrical drawings for the building if they exist

You don’t need a stamped design to start the GC conversation. You do need enough to know whether you’re talking about a modest panel swap or a full service upsize with utility-side work.

Ready to plan a commercial service upgrade in Pinellas?

Revolution Contractors coordinates commercial buildouts and renovations across St. Petersburg and Pinellas County — including projects with electric-service upgrades tied to restaurant kitchens, medical fit-outs, tenant improvements, and older-building modernization. We’re not your engineer and we’re not your utility, but we’re the team that keeps all four parties on the same calendar so your upgrade doesn’t derail your open date.

For scope-specific questions on load calcs, service sizing, or utility policies, consult your licensed electrical engineer and your Duke Energy account rep first — those decisions live with them.

If you want to talk about the GC-coordination side of a commercial service upgrade on your project, call (727) 888-6161 or reach out through the contact form. We’ll set a walkthrough with our team and start mapping the sequence with you.

Frequently Asked Questions

How long does a commercial service upgrade take in Pinellas from start to finish?

It varies widely. Design and permitting can run several weeks to a few months; utility-side work with Duke Energy can add weeks depending on transformer availability and their commercial queue; the on-site construction is typically the shortest phase. Your electrical engineer and Duke Energy account rep will give you the current shape.

Do we need to fully close the business during a commercial electric-service upgrade?

Not necessarily. Many commercial upgrades are planned around short outage windows, with temporary power or scheduled shutdowns during off-hours. Your electrician confirms what is technically feasible; the general contractor coordinates the calendar so downtime lands on a slow day rather than a Friday dinner rush.

Who pulls the electrical permit — the general contractor or the electrician?

On Revolution commercial projects, the licensed electrician typically holds the electrical permit under their license, and the general contractor coordinates scheduling with the authority having jurisdiction (the local building department). Confirm the specific arrangement with your project team.

Can Revolution handle the electrical engineering in-house?

No. We coordinate a licensed electrical engineer as part of the design team. Load calculations and service sizing are their scope, not the GC's. We coordinate the design, permit, and installation team; we do not size electrical services.

What if the existing panel is fine but we just need more circuits?

Then you may not need a service upgrade at all — you may just need panel work or a subpanel. Your electrical engineer runs the load numbers and tells you. Don't assume the answer either way. A service upgrade adds cost and downtime that a subpanel might avoid.

Is there a way to phase the upgrade if we can't afford the full scope now?

Sometimes. Phasing depends on the electrical engineer's load numbers, code, and what Duke Energy will accept. Bring your EE and electrician into the conversation early — a phased plan is a design decision, not a construction shortcut.

Related Reading:

Commercial Electric-Service Upgrade in Pinellas: What a GC Actually Coordinates (and What Stays With Your Electrical Engineer)