Short answer: The charger is only one part of the project. To understand an installation price, you need to know what work is proposed, what has been assessed and what is included. A useful quote explains those details so you can compare the same job.
If you have received two very different quotes—or your first quote was more than you expected—start by asking what each contractor is allowing for. A difference in price does not, by itself, tell you which recommendation is right.
Why are my installation quotes so different?
One proposal might include the charger, while another covers installation labour and materials only. The proposed equipment, mounting position, wiring route and electrical-capacity work may also differ.
Ask each contractor to describe the same starting point: your vehicle, where you park, your preferred charging location and the work needed to get there.
Then compare these items:
| Part of the quote | What to ask |
|---|---|
| Charger | Is equipment included? Which model, and who supplies it? |
| Electrical work | What circuit, wiring route and connection arrangement are proposed? |
| Capacity assessment | What has been checked, and is any capacity-related work included? |
| Site work | Are access openings, excavation or other property work included where needed? |
| Permits and inspection | Who confirms the requirements, obtains the permit and arranges inspections? |
| Finishing | Who repairs affected drywall, paving or landscaping? |
| Completion | What testing, setup explanation and records will you receive? |
| Price and conditions | Are taxes, exclusions, payment terms and possible changes clearly stated? |
A lower price may reflect a different scope. A higher price deserves an explanation too. Ask what is necessary, what is optional and which assumptions still need checking.
Does a 100 amp home automatically mean an expensive upgrade?
Start with the assessment before treating a service upgrade as part of the job. EPCOR asks for a service load calculation before determining whether an upgrade is necessary. Read EPCOR's service-connection FAQ.
Ask: “What does the assessment show, and what options have you considered for my charging needs?”
For a fuller explanation, read Can you charge an EV on a 100-amp service?.
What changes if I have a detached garage?
Ask for the proposed route from the electrical supply to the charging location to be explained. Discuss the existing garage supply, any conduit the contractor proposes to reuse, access to the route and any affected surfaces.
Useful questions include:
- What has been checked about the existing garage supply?
- Is existing conduit being assessed for reuse, or is the quote assuming it can be used?
- If excavation or access openings are needed, who handles them?
- What restoration is included, and what remains my responsibility?
These are details to resolve for your property. The words “detached garage” alone do not define the work or price.
Should I buy the charger first?
Before purchasing, confirm the proposed model with your installer and check the vehicle manufacturer's compatibility information. Agree who supplies the equipment and who handles a problem if the supplied model is unsuitable.
You do not need every equipment decision settled before starting an enquiry. Explain whether you already own a charger, have one in mind or would like help choosing.
Am I paying for charging speed I do not need?
Ask the contractor to connect the recommendation to your routine. How far do you drive on ordinary days? What does your busiest recurring week look like? How long is the vehicle parked at home?
EPCOR notes that charging time depends on the battery, charging-station power and environmental conditions. A headline charging-speed figure needs context. See EPCOR's home-charging guidance.
Ask which suitable options were considered and what you gain from each. If your current charging already meets your needs, explain what you want to improve—such as convenience, equipment placement or preparing for another vehicle.
Why might a site assessment cost money?
Clarify what the initial review includes and what would require an on-site assessment. Before booking a paid visit, ask:
- What will be checked?
- What written information will I receive?
- What is the fee, including applicable taxes?
- Is that fee separate from installation, or credited toward it?
- What further information might still be needed before a firm quote?
Photos can help begin the conversation. Ask which conclusions still require an on-site check rather than assuming a photo review establishes the complete scope.
What if the work changes after I accept the quote?
Ask how changes will be handled before work starts. A useful agreement explains how additional work, its price and any timing effect will be presented for your approval.
For example, if a proposed route cannot be used, you should understand the revised route, property impact and price before agreeing to the change.
What should I send with my enquiry?
Start with what you know:
- Your vehicle, or the EV you are considering.
- Where you park and your preferred charger location.
- Whether you already have charging equipment.
- Your usual driving, time parked and any recurring charging difficulty.
- Any relevant renovation or future electrical plans.
Accessible photos can follow if requested. Leave protective electrical covers in place.
Want to understand the scope for your home? Tell Revolt Electric about your vehicle and parking location to start the conversation toward a written installation quote.