Can You Charge the Car Battery with Solar Panels?

Share on facebook
Share on twitter
Share on linkedin
Share on pinterest

Electric vehicles are crucial to decreasing carbon emissions from transport, and the government realizes this. Hence, they are taking measures to promote electric vehicles, including providing subsidies, building charging infrastructure, and formulating regulations. 

Simultaneously, solar power is growing for its eco-friendly and financial perks. An innovative solution emerges: you can charge the car battery with solar panels. By combining electric transportation with solar energy, this approach stands to promote energy transformation and reduce global carbon emissions!

Charge the Car Battery with Solar Panels

How Do Solar Panels Work?

Solar panels directly convert sunlight into electricity. The process is known as the photovoltaic effect. Photons from sunlight are absorbed by panels’ semiconducting materials, like silicon, generating electron-hole pairs. 

When these electron-hole pairs move directionally between electric fields, a DC current is generated. Photovoltaic cells are wired together in these panels, which are then mounted on homes.

Benefits of Solar EV Charging

You can charge the car battery with solar panels and enjoy the many benefits this offers. By generating electricity on-site from the sun, you save money while supporting cleaner energy adoption. Some of the top advantages of a solar electric car charger include:

Save Charging Costs

Having your own solar power generation system means you can reduce the use of grid electricity or even be independent from the grid. You can charge the car battery with solar panels during peak electricity prices on the grid. Additionally, if excess electricity is generated, you can sell it to the grid, which will offset some of the cost of purchasing solar panels.

Clean Energy

Every kilowatt-hour to charge the car battery with solar panels can contribute to reducing greenhouse gas emissions. This promotes a truly emissions-free driving experience. During the day, solar panels will generate electricity that can directly charge car batteries, and excess power can be stored in home energy storage systems or used to power household appliances.

Energy Independence

Through solar EV charging, households or businesses can reduce their dependence on external energy supplies and improve their ability to achieve energy self-sufficiency. This is particularly important for electric vehicle users in remote areas.

During peak grid loads or power outages, solar EV charging systems can serve as backup power sources to provide the necessary electricity.

Policy and Tax Incentives

Various regulations encourage consumers to invest in solar electric vehicle charger solutions. For example, a 30% federal solar tax credit in the U.S. provides ongoing savings over the lifespan of a solar car charging system.[1] 

Moreover, most European countries provide subsidies for families purchasing charging stations and electric vehicles. For households purchasing EV chargers, the Swedish government will provide a 50% subsidy. In France, individuals who purchase an electric car for less than 47,000 euros will receive a subsidy of up to 5,000 pounds from the government.[2]

How Many Solar Panels Are Needed to Charge an Electric Vehicle?

If you also want to invest in solar power, the first step is to calculate the number of solar panels needed. Determining the solar panel quantity required to charge the car battery with solar panels may consider the following several key determinants:

Important Factors in Determining How Many Solar Panels Are Needed

Many considerations go into calculating the right photovoltaic panel count to charge the car battery with solar panels. The key factors to consider include:

  • Battery Size: Larger battery packs, such as 80+ kWh versions found in some EVs, will necessitate more solar electricity generation to fully charge the car battery with solar panels every day.
  • Solar Panel Power: More robust 350W+ solar modules transform higher percentages of daylight into usable wattage for streamlined charging.
  • Sunshine Duration: The lighting time directly affects the power generation of solar panels. In sunny areas, the same number of solar panels can generate more electricity.

How Many Solar Panels Are Needed for Electric Vehicle Charging?

Considering the above three factors, assuming that the sunshine duration is 6 hours and the solar panel power is 350W, the estimated number of solar panels required for different capacities of car batteries is:

Battery capacitySolar panel output is required every dayEstimated number of solar panels

Correspondingly, if you purchase higher-power solar panels, the required quantity will also decrease accordingly. Therefore, you can calculate how much power the panels need to output per day based on sunshine time and battery capacity and thus calculate the number of solar panels.

How Do You Optimize Solar Charging Systems?

Energy management systems and energy storage solutions are integral to optimizing solar electric vehicle chargers. When coupled with intelligent control software, these tools monitor a home’s energy usage and production in real-time. 

Excess solar energy not immediately used to charge the car battery with solar panels can be used for household appliances or stored in batteries for later vehicle or household use. 

This ensures all renewable energy from solar-powered EV charging stations is efficiently utilized instead of wasted, thereby lowering long-term ownership costs.

Where to Buy EV Charge Solutions?

When considering reliable solar electric vehicle chargers, energy storage systems, and energy management systems, EVB Charger is your loyal partner. 

Our electric vehicle charging solution can be integrated with solar panels on the market, helping you promote the transportation energy transition. Here is our whole charging solution:

Energy Management System

Our intelligent energy management system seamlessly coordinates home solar EV charging systems for maximum efficiency. The key characteristics that make it an attractive choice, including:

  • Advanced Energy Monitoring: This intelligent system can effectively measure the power output of photovoltaic systems and monitor household loads in real time.
  • Seamless Connection: This system can seamlessly connect with Bluetooth or Wi-Fi, making your operation and management more convenient.
  • Integration: The intelligent energy management system can integrate photovoltaic power systems, home energy storage, and electric vehicle chargers to optimize energy use.
  • All-around Safety: The encryption service and real-time monitoring management of the system effectively ensure data security and personal safety.
  • Energy Modes: Multiple energy modes make your energy use more flexible. 
ess components

Floor-mounted AC EV Charger with Cable

The durable floor-mounted charger provides two independent channels for Level 2 vehicle charging. Its top features include:

  • Rapid Charging: Up to 22kW per gun allows recharging EVs quickly for fast, convenient power-ups.
  • Reliable Safety: Comprehensive protection features like overcurrent monitoring protect users and their valuable electric vehicles.
  • Sturdy Design: An IP54 enclosure rating protects internal components from dust and moisture for longevity, no matter the climate.
  • Comprehensive Certification: This charging station has obtained CE, CB, and UKCA certifications, ensuring high quality and comprehensive safety. 
Solar EV Charging-1

Stacked LFP Battery Pack

Our modular battery pack utilizes industry-leading LFP batteries in a safe, long-lasting energy storage solution. Compatible for the charge car battery with solar panel setup, its key characteristics include:

  • Flexible Configuration: Capacity is scalable thanks to modular design and stacking capability. You can effortlessly combine modules.
  • Cell Longevity: Premium A-grade LiFePO4 cells withstand 5000+ charge cycles through 80% depth of discharge optimization.
  • Strong Compatibility: Compatible with multi-brand and multi-model inverters.
  • Plug-and-Play Simplicity: Installation is quick and easy thanks to efficient communication protocols and protective housing.
stacked mounted energy storage


In summary, you can absolutely charge the car battery with solar panels, and it has many benefits. Combining solar panels and EV charging achieves important environmental and economic advantages. 

Leveraging innovative technology from EVB Charger helps make clean, renewable energy the foundation of sustainable transportation. 

Visit EVB Charger’s official website to learn more information about our energy management, charging, and storage solutions!


[1] Federal Solar Tax Credit Guide for Homeowners (2024). Available at: (Accessed: April 29th 2024)

[2] Europe Road Incentives and Legislation. Available at: (Accessed: April 29th 2024)

Table of Contents

Contact us

Related Posts

Talk to Specialists Register