Yes, it is possible to directly connect solar panels (PV panels) to a home battery. This is often done in systems designed to store excess solar energy for later use.
How does a direct connection of PV panels to a home battery work?
To directly connect solar panels to a home battery, a DC-coupled configuration is used. In this setup:
Direct Current (DC):
The solar panels generate electricity in the form of direct current (DC), which can be directed straight to the home battery without converting it to alternating current (AC).Combined Inverter:
A special hybrid inverter is used, which can convert the direct current from the solar panels to alternating current for the house, and also direct the direct current to the battery for storage.Efficient Energy Transfer:
Because the energy is not first converted to alternating current for the power grid and then back to direct current for the battery, energy loss is minimized.
Advantages of a direct connection
Higher Efficiency:
Less energy loss by avoiding double conversion (DC → AC → DC).Cost Savings:
Because energy is stored and used locally, you save on network costs and reduce dependence on the power grid.Self-sufficiency:
You can store and use solar energy when needed, such as in the evenings or during power outages.
What should you consider?
Suitable Equipment:
A hybrid inverter and compatible home battery are essential for safe and efficient operation.Professional Installation:
The installation must comply with safety standards and regulations. Hiring a certified installer is crucial to prevent malfunctions and risks.Energy Management:
A well-designed system can automatically prioritize between direct consumption, battery storage, and feedback to the grid.
Alternative: AC-Coupled Systems
Besides a direct (DC-coupled) configuration, you can also opt for an AC-coupled system. In this setup, the solar panels and the battery are connected independently via alternating current. This is more flexible but can be less efficient due to additional conversion losses.
Frequently Asked Questions
Is it necessary to use a special inverter when connecting solar panels to a home battery?
Yes, for a direct connection of solar panels to a home battery a hybrid inverter is needed. This inverter converts the direct current from the solar panels to alternating current for the house, while simultaneously directing the direct current to the battery for storage.What are the advantages of a direct (DC-coupled) connection instead of an AC-coupled connection?
The advantage of a DC-coupled connection is higher efficiency. Because the energy is not first converted to alternating current and then back to direct current, energy loss is minimized, resulting in less loss of generated solar energy.Can all home batteries be used in a directly connected system with PV panels?
No, not all home batteries are compatible with a directly connected (DC-coupled) system. It is essential that the battery is suitable for this type of connection and that the correct equipment, like a hybrid inverter, is used to store and manage the energy efficiently.
Directly connecting PV panels to a home battery via a DC-coupled system offers an efficient and future-proof solution for sustainable energy storage. Consult with a professional installer to choose a system that matches your energy needs and goals.

Ole Diepstraten
Product & Energy Advisor
Contact Information
+31 85 888 4003
sustainable@chargeblock.nl