March 17, 2021
Electric car parked in a garage with a Tesla Powerwall

The benefits of solar energy goes beyond just generating clean electricity for your home from the solar panels on your roof. Based on how and what you use your energy in your home, you can have a custom designed system of solar PV (photovoltaic) panels, storage and charging to get the most out of the renewable energy you are generating on your roof or property. These additional components include solar battery storage, like Tesla Powerwall, and EV charging stations for even greener driving! 

Here are answers to some of the most common solar battery and EV charting questions we get from homeowners in all of the cities we serve, including Denver, Colorado Springs, Aurora, and Pueblo, Colorado, as well as San Antonio, Austin, Laredo, and the Rio Grande Valley of Texas.

“Can Solar Panels Charge an Electric Car?”

Yes, solar panels can charge an electric car, like a Tesla, a Chevy Bolt, or any other car that runs on electricity. In fact, by charging an electric car with renewable solar energy rather than electricity from the grid, it is running on what is essentially carbon emission-free energy, increasing the “green power” of an electric car.

However, if you have a standard grid-tied solar PV system without battery storage, charging a car with the energy from your solar panels can only happen while your solar panels are generating electricity. This means night time charging from your solar panels for an EV is out but it can still be charged from the electrical grid. 

“Can You Use Solar Panels with Battery Storage for EV Charging?”

Yes! A battery storage system, like Tesla Powerwall, will save your excess solar energy for a time when your home’s energy demand is higher than the current solar panel output. 

For more flexibility and capacity in meeting your energy demands, a well designed solar energy system with backup solar battery storage will be able to generate and use stored electricity to power your home’s essentials as well as desired applications like EV charging 24/7 with little to no reliance on the grid.  While a Tesla Powerwall doesn’t directly charge your electric vehicle, it is part of the wider solar energy system that powers your home and all your energy uses. 

“How many solar panels are needed to charge an electric car?”

Many of our customers ask how many solar panels and Tesla Powerwalls are required to charge an electric car. There are several factors our solar experts will need to consider in sizing your solar panel and battery system to meet your needs. The size and design will depend on the size of your EV’s battery, your car’s mileage rating, how far and often you drive every day. A general range tends to be about 10 solar panels for an average 25 miles per day usage.  To put this into perspective, an average home solar energy system has between 20 to 30 solar panels.  When adding solar battery storage, a Tesla Powerwall has the capacity of 13.5 kWh.  CAM Solar can size and custom design a solar panel + Tesla Powerwall system to meet your energy and EV demands.

“Can a Solar Battery Charge my EV During a Power Outage?”

Yes, Tesla Powerwall can be designed and installed to provide your home with energy, even when the electrical grid goes down. To gain 100% independence from the electrical grid, you will need an ‘off-grid’ solar plus storage system that is designed with enough solar panels to meet your energy needs 24 hours a day. 

If you are hoping to charge your electric car with a grid-tied or off-grid solar plus storage system, you will need to account for the energy required by your vehicle as well — similar to the process of designing a solar carport

With Tesla Powerwall and a Tesla car, you can continue to charge your car during a power outage without exceeding the energy and power capabilities of your Tesla Powerwall and it is all controlled through the Tesla app. 

Thinking About Solar Battery Storage for your EV? There’s Time To Save This Year!

As long as a battery storage system derives 100% of its electricity from solar panels, you can save on your solar plus storage installation costs through the Federal Solar Tax Credit. In 2021, you can take 26% of the total cost of installation and subtract that from what you owe the Federal Government. So, what price would you put on energy independence? With a solar plus storage system properly designed for your electricity needs, you can say goodbye to rising energy costs and inconvenient power outages, and say hello to a much smaller carbon footprint from your home to your car!

Want to power your new electric car with solar energy? Ask CAM Solar about Tesla Powerwall and solar installation today. Get a free quote by calling 210-227-3456 or get in touch here.

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