Short answer: EV charging can be possible on a 100-amp service. The next step is to assess your home and charging needs before deciding what work is appropriate. Neither “100 amps” nor a photo of the panel settles that decision.
If you are considering an EV and worried that a service upgrade will make the project unaffordable, ask for the recommendation to be explained in terms of your property and routine.
Does 100 amps mean I need to upgrade to 200 amps?
It is a question to investigate, rather than an automatic conclusion. EPCOR identifies an EV energy management system as a possible alternative to a service upgrade and recommends consulting a qualified electrician about suitability. Read EPCOR's home-charging guidance.
Ask your electrician: “What can my home support, what charging would meet my needs, and what would make an upgrade necessary?”
There are spare breaker spaces. Does that mean I have capacity?
Spare positions do not answer how much electrical demand the service can accommodate. Ask for the appropriate assessment and load calculation.
EPCOR requests a service load calculation before it determines whether an upgrade is necessary. It also explains that a “200A” marking on its meter does not establish that a property has a 200-amp service. See EPCOR's service-connection FAQ.
If you are unsure of your service size, say so. You can start an enquiry without identifying it yourself or removing electrical covers.
What options should I ask the electrician to compare?
Ask for an explanation of the suitable options and the limits of each:
A charging rate that fits the home and the routine
Ask what charging output is proposed and why. Then discuss whether that approach meets your driving needs during the time the vehicle is usually parked.
Bring a realistic week to the conversation. Include consecutive longer driving days, your winter routine and occasions when the vehicle is home for fewer hours. A plan based only on your easiest day may not answer the problem you want to solve.
The existing Level 1 versus Level 2 guide can help you frame that conversation.
Suitable energy management
Load-management equipment can monitor household demand and control loads as use changes. BC Hydro explains the general principle. Its guidance is useful background; BC-specific methods and programs should not be assumed to apply in Edmonton.
Ask what the proposed equipment monitors, how it controls charging, and what that means for your charging window. Ask for the equipment and installation costs to be identified in the quote.
A service upgrade, if the assessed project needs it
Ask the contractor to identify the constraint and explain the alternatives considered. Include future plans in that discussion rather than deciding on the EV charger alone. BC Hydro's capacity guidance also recommends considering upcoming electrical additions when planning capacity. See its planning advice.
If an upgrade is proposed, request an outline of the utility coordination, property work, approvals and costs that need to be confirmed. Do not treat the upgrade as included unless the written scope says so.
Does a “smart charger” solve the capacity question?
Ask what “smart” means for the particular product. An app, a charging schedule and a proposed energy-management arrangement answer different questions.
Before buying, ask the installer to identify the actual charger and any additional equipment proposed for your home. Request an explanation of how that complete arrangement addresses the capacity assessment. A product label alone is not the assessment.
Will it keep up through winter?
Make the concern specific: do you need to recover from a long commute, repeated driving days or a short overnight parking window?
EPCOR identifies battery size, charger power and environmental conditions among the factors affecting charging time. Read its charging guidance.
Ask how the proposed setup fits your recurring needs, including any managed charging interruptions. No general article can confirm that a particular vehicle will recover the charge it needs every night at your home.
What if the charger will be in a detached garage?
Keep two questions in the quote: what the home's service can accommodate, and what work is needed to supply the charging location.
Ask what has been checked about the garage supply and proposed wiring route. Explain any future plans for the garage. Request clarity about access, excavation or restoration responsibilities where relevant.
For the garage supply and yard route, read our detached-garage charging guide. For approvals and completion, see electrical permits and inspections for home EV chargers.
What should I have before agreeing to the work?
Ask for a written explanation of:
- What was assessed and what remains to be confirmed.
- The proposed charger, charging approach and any energy-management equipment.
- Why the recommendation fits the needs you described.
- Included work, exclusions and property-restoration responsibilities.
- Permit and inspection responsibilities.
- Price, payment terms and the approval process for changes.
For help comparing those details, read What affects the cost of installing an EV charger at home in Edmonton?.
Explore home EV charger installation in Edmonton to see how the equipment fits together.
Want help understanding your home's options? Tell Revolt Electric about your EV, where you park and what you want to improve. You can start without panel photos or a charger model.