As electric vehicles become increasingly popular across the South East, many homeowners are asking the next logical question:
“Can you charge an EV directly from solar panels?”
The short answer is yes – but how it works in practice depends on timing, technology and how your home energy system is configured.
This guide explains how charging an EV with solar panels works, the role of battery storage and what South East homeowners should realistically expect.
Can Solar Panels Charge an EV Directly?
Yes, it is technically possible to charge an electric vehicle directly from solar panels, but with some important caveats.
Solar panels generate electricity during daylight hours, with peak output typically between late morning and mid afternoon. If your EV is plugged in while your solar system is producing electricity, that solar power can flow straight into your vehicle – reducing or even eliminating the need to import electricity from the grid.
However, EV charging and solar generation do not always naturally align.
The Timing Challenge: Solar vs EV Charging
For many households in the South East solar panels are generating electricity during the day but EVs are often parked and charged in the evenings or overnight.
If your car is not at home during peak solar production, you cannot rely on direct solar charging alone. In these cases, the grid or battery storage plays a crucial role.
Using a Solar Battery to Charge an EV
A solar battery allows you to store surplus solar energy during the day and use it later in the evening for charging your EV and running your home power needs.
Benefits of battery supported EV charging:
- Charge your EV in the evening using stored solar energy
- Increase self-consumption of your solar electricity
- Reduce reliance on peak rate grid electricity
- Improve overall return on investment of your solar PV system
For South East homes with EVs, battery storage often makes the difference between partial and meaningful solar powered charging.
Smart EV Chargers and Solar Integration
Modern smart EV chargers can optimise how your vehicle charges by prioritising excess solar generation and automatically adjusting charging speed based on solar output. A smart EV charger will automatically switch between solar, battery and grid power as needed. This means your EV can absorb solar energy whenever it is available, without manual intervention.
How Much Solar Power Does EV Charging Use?
As a general guide:
- A typical EV uses around 3-4 miles per kWh
- A medium sized solar PV system can generate 3,500-4,500 kWh per year
- This translates to 8,000-15,000 miles of solar powered driving annually (if you was only using your solar to charge your EV) depending on system size, battery use and charging habits
While solar panels may not cover all EV charging for every household, they can significantly reduce charging costs.
Is Charging an EV From Solar Worth It?
For most South East homeowners, the answer is yes – particularly when solar panels are combined with battery storage.
Solar powered EV charging helps you:
- Lower cost per mile
- Protect against rising electricity prices
- Reduce carbon emissions
- Maximise the value of your solar installation
Even partial solar charging can deliver meaningful long term savings.
The Best Setup for Solar EV Charging
For optimal results, a typical setup includes a correctly sized solar PV system and a smart home EV charger setup for solar integration. Solar battery storage, while optional, is recommended to make the most out of your solar electricity for EV charging, allowing you access to your free solar electricity around the clock. This configuration provides flexibility, resilience and maximum use of your self-generated electricity.
Solar EV Charging in the South East
Homes across the South East benefit from strong solar generation compared to much of the UK. When paried with intelligent energy management, solar panels can play a major role in powering electric vehicles efficiently and sustainably.
If you are considering solar panels, battery storage or EV charging as part of one integrated system, professional design is essential to ensure everything works together effectively.
Contact SolarTherm UK today for a free, no obligation quote and design, tailored to your property, usage and future energy needs. No hard sell, just honest, expert advice.
Your home. Your energy. Your future.
