EV charging with solar: key highlights
Charging your EV with your own solar power can cut your fuel costs.
- The "Gas Station" on Your Roof: Charging with your own solar power can cut your fuel costs compared with gas.
- Sizing Matters: The number of extra panels depends on how much you drive, your EV's efficiency, and your roof.
- The Net Metering Bridge: You don't need to charge while the sun is shining. Net Metering lets you produce power during the day and "cash it in" to charge your car at night.
- Level 2 Is Recommended: We recommend installing a 240V Level 2 charger for full overnight charges, rather than relying on slow standard outlets.
- Future-Proofing: Even if you don't have an EV yet, sizing your solar system now for a future car saves money on upgrades later.
A Good Pair: How to Power Your Home and EV with Solar Energy
Solar and an EV are a good pair because you can charge your car with your own power.
For many of our neighbors, buying an EV is the first step toward a cleaner lifestyle. But the second step is often a realization: I traded a gas bill for a higher electric bill.
While charging an EV is cheaper than buying gas, charging it with PGE grid power still costs money.
The magic happens when you pair that EV with a solar system. Suddenly, you aren't just saving on gas; you are driving on sunshine. You can cover much of your "fuel" with your own solar power.
At Energy Solutions, we help local homeowners make this connection. Here is how to turn your roof into your personal filling station.
1. The Math: How Many Panels Does a Car Need?
Charging an EV adds to your electricity use, so the number of solar panels you need goes up.
We don't guess. We look at the numbers for your situation:
- Your Driving: How many miles you drive in a year.
- Your EV: How much energy it uses per mile (efficiency varies by model).
- Your Roof: Its orientation, pitch, and shading, which set how much each panel produces.
Multiply your miles by your EV's energy use per mile and you have the energy your car needs each year. We then size the extra panels to cover it.
The Takeaway: If we are designing a system for your home, we simply add a "row" of panels specifically for the car. We size it for your home and your car together.
2. The "Night Charging" Myth
Charging at night with solar is possible, so the night charging worry is a myth.
A common worry is: "I'm at work during the day when the sun is out. How can I charge my car with solar if I'm not home?"
This is where Oregon's Net Metering policy shines.
You don't need to have the car plugged in while the sun is hitting the panels.
- Daytime: Your solar panels pump clean energy onto the grid while you are at work. You earn "energy credits" for every kilowatt-hour.
- Nighttime: You come home, plug in your car, and pull power from the grid.
- The Swap: You pay for that nighttime power using the credits you earned during the day.
Depending on your utility's net metering terms, those credits offset what you pull at night. You are still driving on solar power, even if you charge at midnight.
3. The Equipment: Why You Need a Level 2 Charger
A Level 2 charger charges an EV much faster than a standard wall outlet.
To make the "Solar + EV" lifestyle work, we install a Level 2 Charger.
- Power: Uses a 240V circuit (like your dryer or oven).
- Speed: Adds range many times faster than a standard outlet.
- Smart Features: Modern chargers, like the Enphase IQ EV Charger, integrate with your solar app. You can see how much sunshine went into your car.
As licensed electricians, we handle the heavy lifting: running the new circuit from your main panel to your garage or driveway, ensuring it meets local electrical code.
4. The "Lock-In" Benefit
Charging from your own solar locks in your fuel cost.
Gas prices move around, and utility rates change too.
When you install a solar system sized for your EV, you are locking in more of your fuel supply.
Once the system is installed, the power it makes for your car is not tied to gas prices. That is true energy independence.
5. What If I Don't Have an EV Yet?
You can install solar now even if you do not have an EV yet.
We often meet homeowners who are planning to buy an EV in two or three years.
Our advice: Size the system for the car now.
It is usually easier to install those extra panels while our crew is already on your roof than to come back in two years and expand the system. Plus, until you get the car, that extra energy will just wipe out even more of your household electric bill.
The Bottom Line
The bottom line: solar and EVs work well together.
Solar panels and electric vehicles are the peanut butter and jelly of the energy world. Separately, they are good. Together, they are a great match.
If you want to stop renting your power from the utility and your fuel from the gas station, let's chat. We can look at your driving habits and design a system that powers your life - and your commute.
Ready to drive on sunshine? Get My Free Quote or call our local team at (971) 526-5545 to discuss your EV charging options.
EV charging with solar FAQs
Solar plus a Level 2 charger can charge your EV at home, and these answers cover outages, installation cost, and rebates.
Can I charge my EV during a power outage if I have solar?
Only if you also have a battery backup (like the Enphase IQ Battery). Standard solar inverters shut off during outages for safety. With a battery, you can route solar power to your car, though we usually recommend prioritizing your house essentials (fridge/lights) during a blackout.
What affects the cost of installing a Level 2 charger?
It varies based on how far your electrical panel is from your parking spot. If it's right next to the panel, it's a quick job. If we need to run conduit across the garage or trench to a driveway, it costs more. We give you a real number in a free quote.
Are there rebates for chargers?
Often, yes. Energy Trust of Oregon or PGE occasionally offer incentives for smart chargers, and state programs may apply. Amounts and eligibility change often - we check the current numbers for your home.
Update, Oct 2026: the federal residential solar credit (25D) ended Dec 31, 2025. Business credits may still apply - ask us.
