15.10.2025

Efficient charging with solar energy and NRGkick: PV surplus charging for electric cars

This article is all about PV surplus charging for electric cars and how you can efficiently charge your vehicle battery with self-generated solar power - ideal in combination with NRGkick as a flexible wallbox for surplus charging.

Efficient charging with solar energy and NRGkick: PV surplus charging for electric cars

family looks at the NRGkick app while the e-car is charging with PV power.

More and more people are deciding to buy an electric car to help protect the environment and benefit from the advantages of electromobility. At the same time, the use of solar energy to generate electricity is also steadily increasing. So what could be more obvious than combining these two technologies?

 

This article is all about PV surplus charging for electric cars and how you can efficiently charge your vehicle battery with self-generated solar power - ideal in combination with NRGkick as a flexible wallbox for surplus charging.

The basics of PV surplus charging

PV surplus charging means using surplus solar power from your photovoltaic system to charge your electric vehicle. This means that self-generated electricity that is not used in the home or by other consumers flows directly into the vehicle battery. With an intelligent wallbox including suitable software and control technologies, the PV electricity that would otherwise be fed into the grid is automatically directed into the car. This allows you to use your solar energy as efficiently as possible and reduce the need for grid power.

Advantages of the PV surplus store

  • Environmental friendliness: Charging with your own solar power significantly reduces your carbon footprint. You avoid fossil fuels and reduce greenhouse gas emissions.
  • Cost savingsPV surplus charging helps you to avoid expensive grid electricity and use your own cheap electricity instead. A sufficiently dimensioned PV system noticeably increases the effect.
  • Independence: With surplus charging, you can charge independently of the mains power supply - practical for high self-production or unstable supply.
Photovoltaic system for efficient charging with solar energy and NRGkick.

The technology behind the PV surplus store

Intelligent wallboxes for PV surplus charging are equipped with smart functions that optimize the process. They monitor the current solar yield and automatically adjust the charging power to make efficient use of the PV surplus. Energy management systems simultaneously record household consumption and control the flow of electricity between the photovoltaic system, electric car and grid. This ensures that surplus solar power flows into your electric car with priority.

Tips for optimal use of the PV surplus store

  1. Dimensioning of the photovoltaic system: The system should be suitably designed for maximum benefit. The greater the PV power, the more PV surplus charging is possible.
  2. Smart home integration: Integration into an energy management system or smart home increases self-consumption. In combination with heat pumps or storage systems, the PV surplus can be used even more precisely.
  3. Monitoring & Analysis: Monitor PV yield and consumption regularly. Use the data to optimize charging windows, minimum currents and priorities for your charging setup.

PV surplus store & NRGkick

With the „Photovoltaic-guided charging“ software upgrade, your NRGkick has all the functions for PV-guided charging surplus charging. In the NRGkick app, you select the appropriate mode (surplus charging, 100 % sun, etc.) and set optional time windows. This allows you to decide at any time how much of your self-generated energy should flow into the electric car and when - including the integration of a battery storage unit. The upgrade can either be purchased when you buy NRGkick or activated at a later date. NRGkick thus functions as a smart wallbox for surplus charging and does not require any additional installation.

Two cell phones show the NRGkick app with the PV surplus charging function.

Conclusion: Sustainable and affordable charging with solar power

PV surplus charging offers a sustainable and cost-effective way to combine electromobility and solar energy. By efficiently using excess PV energy, you reduce emissions, lower grid power consumption and therefore costs and have to charge less often at more expensive public charging stations. The upgrade for PV charging with NRGkick makes this charging strategy particularly attractive: convenient, flexible and future-proof.

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