100 Amp vs 200 Amp Electrical Panel: Which Does Your Calgary Home Need?
If you are trying to decide between a 100 amp and 200 amp panel, the answer usually comes down to what you are running now and what you are planning to add. Here is how to work it out.
When a 100 Amp Panel Is Still Enough
A 100 amp service works for smaller Calgary homes running gas heat, a gas range, and no EV charger or solar system. If that describes your setup and nothing is changing, you may not need to upgrade the service itself — just the panel cabinet if it is aging or unsafe.
If your panel is original to a home built before 1990, get it inspected regardless. Federal Pacific and Zinsco panels in particular have known failure risks that go beyond capacity.
When You Need 200 Amps
A 200 amp panel is the current standard for new Calgary residential construction and is the right call if your home has or will have any of the following:
- Central air conditioning
- An electric range or double oven
- A Level 2 EV charger (these draw 32 to 50 amps on their own)
- A solar panel system
- Electric in-floor heating
- A hot tub or sauna
- A basement suite, garage, or addition
On a 100 amp panel, high-draw appliances compete for the same limited capacity. Regular tripping is the warning sign. Overheating is the risk.
What a Panel Upgrade Costs in Calgary
Price depends on whether your service entrance is overhead or underground, and whether the meter base and weatherhead need replacing. These are current Calgary figures:
| Service Type | Price Range | Notes |
|---|---|---|
| 100 amp panel replacement | $3,000 to $3,500 | Applies when incoming service is already 200 amp but the panel cabinet needs replacing |
| 200 amp overhead service upgrade | $4,000 to $6,000 | Includes new panel, updated service entrance, ENMAX coordination, City of Calgary permit and inspection |
| 200 amp underground service upgrade | $7,000 to $10,000 | Involves underground conduit and service lateral. Common in newer Calgary neighbourhoods and infills |
All Panel Upgrade Experts jobs include City of Calgary inspection coordination. Our panels pass first time, every time.
The ENMAX and City of Calgary Inspection Process
A panel upgrade in Calgary requires a City of Calgary permit, licensed work under Master Electrician oversight, a City inspection, and ENMAX coordination for the service disconnect and reconnect. We handle all of it on every job.
Be cautious of any contractor who suggests skipping the permit. Uninspected work creates liability when you sell and can void your home insurance.
Planning for Solar or an EV Charger? Sort the Panel Now
If solar or an EV charger is on your radar in the next few years, upgrading to 200 amps at the same time saves you ENMAX coordination costs and a second round of permits. A Level 2 charger draws up to 40 amps continuously. A solar system needs its own dedicated breaker. A 100 amp panel cannot comfortably carry both alongside normal household loads.
Signs Your Panel Is Not Keeping Up
- Breakers trip regularly under normal use
- Lights dim when a large appliance kicks on
- No room left for additional breakers
- You are adding a suite, workshop, or major appliance
Why Choose Panel Upgrade Experts
We have completed over 1,000 electrical panel upgrades in Calgary and surrounding communities since 2013. Every job is done by licensed Red Seal electricians under Master Electrician oversight — no subcontractors, ever. We carry a 10 year workmanship warranty and manage the full process from permit to ENMAX coordination to City of Calgary inspection.
See our electrical panel upgrade service or call us at 403 774 7460 to book an assessment.
Frequently Asked Questions
Can I stay in my home during a panel upgrade?
Yes. The work requires a power outage of roughly four to six hours. Most upgrades are completed in a single day.
Do I need to contact ENMAX myself?
No. We coordinate directly with ENMAX on your behalf for the service disconnect and reconnect.
Will my panel pass the City of Calgary inspection?
Our panels pass City of Calgary inspection first time on every job.
Is a 200 amp panel enough for solar and an EV charger?
For most Calgary homes, yes. We will confirm during your assessment whether any additional capacity planning is needed.
How long does a 200 amp panel last?
A quality panel installed correctly typically lasts 30 to 40 years. We back our work with a 10 year workmanship warranty.
Do you serve areas outside Calgary?
Yes. We serve Cochrane, Okotoks, and Chestermere in addition to Calgary.