Commercial Electrical Installation & Wiring

When a Maine business opens late or trips a breaker every time the new equipment kicks on, the electrical work is almost always where the trouble started. A lease is signed, a buildout begins, and suddenly two contractors are pointing at each other while your opening date slips and the rent clock keeps running. The wiring behind your walls decides whether your espresso machine, your walk-in cooler, or your rooftop HVAC unit runs reliably for years — or becomes a recurring service call. Getting it right the first time is the difference between a space that works and one that fights you every day.

MC Electric Comfort Systems is a veteran-founded contractor based in West Gardiner, serving light-commercial businesses across Central Maine, the Kennebec Valley, and the Midcoast. We wire offices, retail, restaurants, clinics, salons, gyms, churches, and multi-tenant buildings from rough-in through final inspection. Because we are licensed for both electrical and HVAC across Maine, New Hampshire, and Massachusetts, the same team that wires your building also installs the systems that wiring feeds — one coordinated job, not a relay race between trades. Start with a free on-site assessment and we will tell you straight what the work involves. Reach out.

Wiring a Maine business right, end to end

Commercial electrical installation is more than pulling wire and setting outlets. It is reading your floor plan against how you operate, sizing your service for the loads you run today and the ones you will add tomorrow, and building it all to code so it passes inspection the first time. From service entrance and panels to branch circuits, lighting, and dedicated equipment circuits, the goal is the same — a system that is safe, expandable, and invisible because it does its job.

New installation and rough-in

Rough-in gets buried in the walls, which is exactly why it has to be planned before a single stud is covered. We coordinate with your general contractor, the other trades, and your equipment specs so conduit, boxes, and home runs land where they need to — not where someone guessed and not where you are reopening finished walls later on your dime.

Tenant fit-outs, build-outs, and remodels

Getting a leased space ready to open is one of the most common — and most time-sensitive — reasons businesses call us. A vanilla shell or a previous tenant’s leftover layout rarely matches what your business needs. We re-circuit for your floor plan, add the lighting and power your operation requires, and bring everything up to current code — turning a retail bay into a clinic, a vacant unit into a salon, or a storefront into a restaurant. We work alongside your contractor and landlord so the electrical scope does not become the bottleneck that holds up your certificate of occupancy.

Dedicated circuits for commercial equipment

Commercial equipment is hungry and particular. Ovens, fryers, walk-in coolers, compressors, sterilizers, and server gear each have their own demands, and sharing a circuit between two of them is how you end up with nuisance trips and damaged equipment. We install properly sized dedicated circuits with the right breakers, conductors, and protection so each piece gets clean, stable power — sized for what you might add later, not just the bare minimum.

Service and panel upgrades — adding the capacity you actually need

Many Maine commercial buildings were wired for a different era and a different tenant. If your panel is full, your service is undersized, or you are adding equipment the building was never designed to carry, you need more capacity before you add load — not after the breakers start tripping. We assess your service, determine whether you need a new panel, a subpanel, or a full upgrade, and handle the utility coordination. If the panel is the limiting factor, our commercial panel upgrade work is where many projects begin; when something is already failing, our commercial electrical repair team can diagnose it before it becomes an emergency.

Three-phase power and heavier loads

Larger commercial loads — bigger HVAC equipment, certain compressors and motors, and a range of commercial machinery — often call for three-phase power rather than the single-phase service most small buildings start with. Three-phase delivers power more efficiently to heavy motor loads and is frequently what the manufacturer requires. We evaluate whether it is available and appropriate for your location, coordinate with the utility, and design the distribution to match — a question best answered before you commit to equipment your service cannot support.

Permits, inspections, and code-compliant work

Commercial electrical work is inspected work, and for good reason. We pull the required permits, build to the current electrical code, and schedule the inspections your project needs to be legal and safe. Cutting corners here is a false economy that surfaces at the worst possible moment — usually when you are trying to open, refinance, or sell.

The dual-trade advantage: one team for wiring and the systems it feeds

Most electrical projects in a commercial space exist to power something: heating and cooling, kitchen equipment, EV chargers, a generator. On a typical job, one company wires the building and a separate company installs the HVAC or equipment — and the seam between them is where problems live. The circuit was sized for a different unit, schedules collide, and each blames the other while you mediate.

Because we are licensed for both electrical and HVAC, that seam disappears. The same team designs the wiring and the systems it serves, so circuits are sized for the actual equipment, the rough-in is set before the units arrive, and the whole job is sequenced as one project — one schedule, one quote, one point of accountability. On a commercial buildout that usually means less downtime and an earlier opening. It anchors our commercial services and is the biggest reason businesses bring us in early.

What you deal with	Two separate contractors	One dual-trade team (MC)
Scheduling	Two calendars you align yourself	One schedule we sequence for you
Accountability	Each blames the other when something fails	One company owns the result, start to finish
Quoting	Two quotes with overlaps and gray areas	One coordinated quote, no surprise gaps
Permits & inspections	Coordinated across two firms	One team that knows the whole job
Timeline & downtime	Delays compound at every handoff	Phased to keep you running and open sooner

Planning for what is coming, not just what is here

The most expensive electrical mistake a growing business makes is sizing for today and outgrowing the service in two years, so we design with headroom for what is almost certainly coming next. Adding heat pumps or rooftop HVAC? That is a real load we account for up front. Putting in EV charging stations? Those draw heavily and are far cheaper to plan for than to retrofit. Want backup power for outages? We can build your service to accept a commercial generator cleanly. Where qualifying efficient HVAC equipment is involved, programs like Efficiency Maine may offer incentives; eligibility depends on the program, so we point you to current offerings, though we are not your tax advisor.

Minimizing downtime with phased work

For an occupied business — a restaurant still serving dinner, a clinic still seeing patients, a retailer that cannot go dark — we plan the work in phases around your operating hours, shifting power in stages and scheduling after-hours where it makes sense so the parts that must keep running keep running. Coordinating electrical and HVAC under one roof makes this far easier — we are never waiting on another contractor to take the next step.

Start with a free on-site assessment

Every commercial space is different, and the only way to give you a real answer is to see it. We will walk your building, look at your panel and service, talk through your equipment and plans, and lay out the work and how we would sequence it. No cost, no pressure. Schedule your free assessment and let’s get your space wired right.

Questions Maine business owners ask us

Do you handle tenant fit-outs and build-outs?

Yes — they are a large part of what we do. We take leased shells and former tenant spaces and wire them for your specific operation: new circuits for your floor plan, the lighting and power you need, dedicated circuits for equipment, and any service or panel changes required. And because we also do HVAC, we can handle the heating and cooling side of the same fit-out as one coordinated project.

Can you handle three-phase power and heavier commercial loads?

Yes. Bigger HVAC equipment, certain motors and compressors, and a range of commercial machinery run on three-phase power, and we design and install for it. The first step is confirming what is available at your location and what your equipment requires, which we sort out during the assessment and with the utility. If single-phase will serve you well, we will tell you that too rather than push something you do not need.

How do I know if my business needs a service or panel upgrade?

A few signs point to it: breakers that trip when equipment starts up, a panel with no open spaces left, flickering lights when heavy loads kick on, or a plan to add equipment, HVAC, or EV charging the current service was never sized for. The honest answer comes from an assessment — we look at your service and intended loads and tell you whether you genuinely need more capacity. We would rather right-size the work than oversell it.

Do you pull permits and handle inspections?

Always. Commercial electrical work is required to be permitted and inspected, and we handle that as part of the job — pulling the permits, building to current code, and scheduling the inspections your project needs to pass. We document everything so your records stay clean and your space is fully legal.

What areas do you serve?

We are based in West Gardiner and serve light-commercial businesses throughout Central Maine, the Kennebec Valley, and the Midcoast — including Augusta and surrounding communities. We are licensed for both electrical and HVAC in Maine, New Hampshire, and Massachusetts. If you are not sure whether your location is in our area, just get in touch — we are happy to let you know and set up a free on-site assessment.