When people think of green living, they often imagine solar panels, but electric vehicles (EVs) are another eco-friendly option! Solar energy systems and EVs have increased in popularity recently, with EV sales in the U.S. jumping by over 85% between 2020 and 2022. Adding an EV to a solar-powered home allows homeowners to maximize energy savings and reduce their carbon footprint. By combining solar power and EV charging, homeowners can take advantage of long-term financial and environmental benefits.
Primary Benefits Of Powering Your EV With Solar Energy
You can use electricity from the grid to charge your electric car, but there are many advantages to using solar energy as the main power source instead. Powering an EV with solar energy removes 100% of charging-related emissions, so you’ve got yourself a zero-emission solution.
Significant Energy Cost Savings
Charging your EV with solar energy helps reduce grid reliance, lowering your overall energy costs. For comparison, charging an EV with the grid costs an average of 13 to 15 cents per kilowatt-hour (kWh) in the U.S., while charging with solar power costs as little as two to three cents per kWh.
Energy Independence
Using solar to charge an EV reduces dependency on fluctuating grid energy prices and offers protection from future electricity rate increases. Further energy independence is possible with solar batteries; homeowners can store some excess energy their panels produce during the day and charge the EV during the night using stored solar power.
How Much Solar Power Do You Need To Charge Your EV?
When deciding on solar as the main power provider for an EV, it’s important to understand how much solar energy the home needs to support the vehicle.
Evaluate Your EV Charging Needs
First, identify the average energy consumption of your particular EV model. For example, a 2023 Tesla Model S requires around 28 kWh per 100 miles. Exactly how much energy an EV will use varies based on driving habits, vehicle size, and energy efficiency.
Solar System Sizing For EV Charging
Some homes may already have a large solar array to support an EV, while others might need an expansion. Estimate how much extra solar capacity is required to power an EV by calculating expected driving distance and energy cost.
For instance, if the average EV driver covers 12,000 miles per year, they would need about 4,000 kWh per year to charge their car, which typically requires about 12 solar panels, depending on their efficiency. You can also ask your sales representative to help you calculate the right number of panels.
Comprehending EV Charging Levels
Not all EV chargers are created equal. The right fit for a specific home depends on the EV, your budget, your home’s wiring, and more.
Level 1 Charging With Solar
Level 1 charging uses a standard 120V wall outlet, adding three to five miles of range per hour. Yes, that’s slow, but feasible for people with flexible driving schedules or shorter, local daily commutes. Since Level 1 charging simply uses a standard wall outlet, you won’t need additional wiring.
Level 2 Charging With Solar
Level 2 charging (240V) adds 25 to 30 miles of range per hour, offering a faster, more convenient charging solution for most EV owners. However, it requires additional installation efforts than Level 1 chargers, such as expanding the home’s wiring setup. Still, they pair well with solar energy to optimize convenience and cost savings as they charge faster.
Level 3 Charging (DC Fast Charging)
Level 3 fast chargers are generally reserved for commercial settings. They require industrial-grade electricity connections and cost $10k or more, making them unfeasible for homes. For most homeowners, Levels 1 and 2 are sufficient, and you can optimize those setups with solar power and batteries.
Adding Battery Storage For Maximum Saving Potential
Batteries can provide powerful support for EV charging, especially overnight or during an outage.
Maximizing Solar Energy Use With Battery Storage
Battery storage can store excess solar energy during the day, which you can then use to charge your EV overnight or on a cloudy day. Uprise installs Franklin WH batteries because they’re affordable, easy to install, and come with more powerful safety features than other batteries.
Incentives For Solar Battery Storage
Like solar panels, solar batteries may be subsidized by federal and state incentives. The 30% federal solar tax credit (ITC) can reduce income taxes owed. At the same time, state-level incentives such as Maryland’s Energy Storage Tax Credit can offer an additional reduction (in this case, 30%). Most incentives can be used simultaneously and alongside potential energy savings from net metering.
Maximizing Financial Savings With Incentives And Rebates
Many states and utility companies also provide financial perks for EV home chargers, potentially covering a portion of the installation costs.
Net Metering Benefits
Net metering is the system in which excess energy from a home’s solar panels can be sold back to your utility company for credits.
Time-Of-Use (TOU) Rates
Some utility companies offer time-of-use (TOU) plans, where electricity rates fluctuate based on grid demand. By charging an EV with solar-produced energy during peak hours, homeowners can lower their energy bills even further.
The Installation Process: How To Set Up EV Charging With Solar
Homeowners should trust an installer to set up their EV charging stations since these professionals are experienced with electrical safety. Knowing what to expect can help homeowners prepare the space and make room in their budgets.
Integrating Solar With Your EV Charging Setup
Homeowners must evaluate their home’s energy usage to find a starting point for how EV charging might integrate with solar. Then, they should seek energy consultations from professionals who can help optimize panel placement (and install more, if necessary).
Selecting The Right Installer And Equipment
Next, select a certified and licensed installer with experience integrating EV chargers with solar systems. A trustworthy professional will be honest, timely, and proud to use their recommended brands.
Upgrading Electrical Systems (If Necessary)
Level 2 chargers may require electrical upgrades, such as upgrading the home’s electrical panel. Make sure to factor these into the total cost of implementation.
Common Questions About Charging Your EV With Solar Power
1. Can I use my existing solar system to charge my EV?
Of course! But you may need to think through how much power you use now, and how much you’ll use when you add an EV. Think about the size and capacity of your existing solar system and how much excess energy it produces. You can also consider a hybrid system with solar batteries. Feel free to reach out to your Uprise sales representative if you have questions.
2. How long will it take to charge my EV using solar power?
For Level 2 chargers, homeowners can expect a full charge to take up to eight hours, depending on the EV model and battery size.
3. What happens if it’s cloudy or during the winter?
Your solar system will produce less power on these days. Pairing solar panels with battery storage gives you the option to store excess energy produced on sunny days for use in less sunny periods, further increasing savings.
Drive Clean And Reap The Savings With Solar-Powered EV Charging
The benefits of solar panels don’t have to end with powering your home’s lights and HVAC system! Using solar energy to charge an EV provides cost savings, environmental sustainability, and energy independence. To maximize your solar array’s potential and reduce your carbon footprint, consider powering your EV with solar.
Ready to charge your EV with solar power? Contact us today for a customized quote and see how much you could save by powering your home and car with the sun.