The cost of 10 solar panels with a battery system can vary depending on several factors, including the type of solar panels, the battery capacity, the brand and quality of the components, and the complexity of the installation. Additionally, prices can also vary depending on the supplier and the region you are located in.

Generally, the cost of 10 solar panels with a battery can range from several thousand to tens of thousands of euros, depending on the specific configuration and the desired quality of the components. It is advisable to request quotes from different suppliers and seek professional advice to get an accurate price estimate based on your specific needs and location.

It is also important to consider the potential savings and payback period when assessing the costs. With a solar power system and a battery, you can save on energy costs and may be eligible for subsidies or tax benefits that can reduce the total costs.