Charging an electric car
How much energy does an electric car need?
Let's start with the basics. A medium-sized electric car consumes about 15-20 kWh of energy per 100 kilometers. With an annual mileage of 15,000 kilometers, this means a demand of about 2500-3000 kWh of energy per year. This is a considerable amount - for comparison, the average household consumes about 3500-4000 kWh per year.
The good news is that eTile's 50 m² solar roof can generate up to 7,000 kWh of energy per year. This is enough for both home needs and charging an electric car. Moreover, you can increase the active area of the roof if you plan to purchase a second electrician in the future.
How to effectively charge a car from a solar roof?
The key to efficient use of energy from a solar roof is intelligent charging management. Here are some practical tips:
- Schedule charging during the day It is best to charge your car when the sun is shining and the solar roof produces the most energy. The power management system can automatically start charging when the power output is greatest.
- Take advantage of the energy storage The energy storage allows you to charge your car with solar energy also in the evening and at night. This is especially important if you return from work after dark. For an electric car, we recommend a warehouse with a capacity of at least 10 kWh.
- Choose the right charger Wallbox with variable charging power can adapt to the current energy production from the roof. When the sun is shining, it charges at full power, and when it gets cloudy - it reduces the charging power.
Which charger to choose?
When choosing a charger for a home with a solar roof, pay attention to:
- Possibility of dynamic power management
- Compatibility with your home energy management system
- Charging power matched to the installation (usually 11-22 kW)
- Possibility of remote control through the application
We recommend chargers with Solar Matching function, which automatically match the charging power to the current energy output from the roof. Thus, you maximize the use of your own energy.
Plansazkirina sazkirinê
If you are planning to purchase an electric car, it is worth considering this already at the stage of designing a solar roof:
- Plan a larger active roof area
- Prepare the appropriate wiring for the charger
- Consider installing an energy storage
- Choose an inverter compatible with the charger
Our designers will help you choose the optimal system configuration, taking into account your current and future energy needs.
Savings and benefits
Charging an electric car with energy from its own roof is not only ecological, but also real savings:
- The cost of driving 100 km when charging from the network: about 35-40 PLN
- Cost of driving 100 km when charging from a solar roof: practically 0 PLN
With an annual mileage of 15,000 km, savings can reach up to PLN 5000-6000. This is another argument in favor of investing in a solar roof.
Smart Home Integration
A car charging system can be part of smart home energy management. A special application allows you to:
- Monitor the charging process
- Plan charging at the most favorable times
- Track energy consumption and savings
- Optimize the use of energy from the solar roof
Frequently Asked Questions
Can I charge my car at night? Yes, but then the energy will be taken from the grid or from the energy storage. If you want to get the most out of your own energy, it is worth considering installing a storage facility.
How long does it take to fully charge the car? With a standard 11 kW home charger, a full charge lasts 4-8 hours, depending on the battery capacity. This is the perfect time to recharge during the day when the roof is producing energy.
Is a solar roof enough to charge two cars? It depends on the roof area and your needs. A roof of 70-80 m² can produce enough energy for a house and two electric cars with standard use.
A solar roof and an electric car are the perfect combination. Not only do you save on your energy and fuel bills, but you also become independent from rising energy and fossil fuel prices. Properly planned installation will provide you with energy independence for years.
Remember that our experts are at your disposal. We will help you plan the installation optimally suited to your needs, also taking into account future plans to purchase an electric car.
Did you know that the energy produced by the 50 m² eTile solar roof can power a medium-sized electric car for a distance of up to 25,000 km per year? This is almost twice the average annual mileage of a car in Poland!
