10 services · Master electricians
Electrical services for homes and businesses
From EV chargers to panels, from generators to night-time emergency repairs: STM-Électrique’s master electricians handle all your electrical work, from Laval to the Laurentians and from Montréal to the South Shore.
Free estimate, callback usually within the hour

In short
STM-Électrique in a few lines
STM-Électrique is a firm of master electricians based in Mirabel, holding RBQ licence 5815-0137-01. It offers ten services: panel upgrades, service entrances, generators, EV chargers, smart homes, baseboard heaters and thermostats, lighting, pools and spas, 24/7 emergency repairs and general electrical work. It handles the steps with Hydro-Québec, the permit and the declaration of work when they are required. The estimate is free, and we usually call you back within the hour: 438 542-7304.
Where to start?
Your situation, the right service
Not sure which service to ask for? Start from what is happening to you.
Capacity and supply
What brings power into the house and distributes it: the panel, the service entrance, the backup generator.
Electrical panel upgrade
60 or 100-amp panels that have become too small, fuse panels, Federal Pioneer panels with Stab-Lok breakers.
- Load calculation before the quote
- Hydro-Québec steps and permit included
- Every circuit labelled before we leave
Most-read guide (in French)Electrical panel standards in Québec
Service entrance
Mast, bracket, meter base and service cable, up to 400 amps.
- Upgrade to 200, 320 or 400 amps based on the load calculation
- Disconnection and reconnection coordinated with Hydro-Québec
- Often redone with the panel, in the same job
Most-read guide (in French)320 or 400-amp service: when to go beyond 200
Home generator
Hookup of a portable or standby generator, to keep the house running during an outage.
- Manual or automatic transfer switch
- Circuits to keep running chosen with you
- Full outage test before we leave
Most-read guide (in French)Transfer switch: which one to choose
Charging and the connected home
The charger for your electric vehicle, and a home you control from your phone.
EV charger installation
Level 2 home chargers, most often the FLO Home X3.
- Load calculation and dedicated 240 V circuit
- Usually two weeks between the visit and the installation
- The work invoice for your Écorecharge application
Smart home
Heating, lighting and appliances controlled from your phone.
- Sinopé smart thermostats
- Smart dimmers and switches
- Load controllers for the water heater or the charger
Heating, lighting and the backyard
Everyday comfort: baseboards and their thermostats, lighting inside and out, the pool and the spa.
Baseboard heaters and thermostats
Electronic or smart thermostats, baseboards replaced or added.
- Each thermostat chosen for the wattage of its baseboards
- Sinopé models and Hilo-compatible thermostats
- Circuits and breakers checked
Read first (in French)Aluminum wiring: certify it or redo it
Indoor and outdoor lighting
Recessed fixtures, under-cabinet lighting, facade and walkway lighting.
- Recessed lights and LED strips
- Outdoor lighting with motion sensors
- Dimmers and smart controls
Pools and spas
Power for the spa, the pump, the pool heat pump and the backyard lighting.
- Dedicated circuit and GFCI protection for the spa
- Panel capacity assessed first
- Weatherproof boxes and conduit for outdoors
Most-read guide (in French)Pool and spa electrical work
Emergencies and everyday work
When it cannot wait, and everything that does not have its own page.
24/7 emergency repairs
A master electrician at your door in 90 minutes or less, day and night, weekends included.
- Burning smell, an outlet getting hot, a main breaker that will not reset
- Part of the house without power
- Repair, then power restored and tested
General electrical
Everyday work around the house, big or small.
- Replacing 100 A disconnect switches and the water heater disconnect
- Recessed fixtures, GFCI outlets, 240 V outlets and circuits
- Renovations, basements and troubleshooting
Most-read guide (in French)GFCI: what it protects, and where you need one
Why STM-Électrique
One team for all your electrical work
4.9 out of 5
The rating from our 469 Google reviews.
90 min
Or less to arrive in an emergency, 24 hours a day.
Under 1 h
Our usual time to call you back after a request.
RBQ
Master electricians, licence 5815-0137-01.
How it works
Four steps, whatever the service
You reach us
At 438 542-7304 or through the quote form. We usually call you back within the hour.
The free estimate
Depending on the project, from photos or during a visit. The price is written in the quote, before the work.
The work
The permit, the declaration of work and the steps with Hydro-Québec, when they are required: we take care of them.
The check
We test the installation before leaving and show you what was done. You keep a detailed invoice.
Where we work
Our areas: Laval, North Shore, Laurentians, Lanaudière, Montréal and South Shore
Our offices are in Mirabel. Each city we serve has its own page (in French), with its neighbourhoods and specifics.
Laval and the North Shore
Laurentians and Lanaudière
Montréal and the South Shore
Frequently asked questions
Our services: your questions
How much does a service call or a new installation cost?
Every home and every project is different. Rather than a generic price, we assess your needs, sometimes from photos, sometimes during a visit. The estimate is free, and the price is written in the quote, before the work.
How soon can the work be done?
For an EV charger, a panel or a service entrance, allow about two weeks between the visit and the work. Emergencies come first: a master electrician arrives in 90 minutes or less, day and night.
Do you handle emergencies?
Yes, 24 hours a day, 7 days a week, anywhere in our service area. If you are unsure, the 20-second check on our emergency page helps you know what to do while you wait.
Does your work meet code?
Yes. STM-Électrique is a firm of master electricians who are members of the Corporation des maîtres électriciens du Québec, holding RBQ licence 5815-0137-01. The work follows Chapter V, Electricity, of the Québec Construction Code, and we handle the permit and the declaration of work when they are required.
Can I supply the charger or the light fixtures myself?
Yes, as long as they are certified for Canada, with the mark of a recognized certification body such as CSA, cULus or cETLus. For a charger, also check that it is on the Écorecharge program list before you buy if you want the rebate.
Do you also work for businesses?
Yes. Besides homes and small buildings, we work in businesses: EV chargers, panels, lighting and emergency repairs.
Which areas do you serve?
Laval, the North Shore, the Laurentians, Lanaudière, Montréal and the South Shore, from our offices in Mirabel. Each city we serve has its own page.
Your project
A project, an outage, a question?
Tell us what is going on at your place. The estimate is free, and we usually call you back within the hour.