The savings you can achieve with solar panels and a home battery depend on various factors, such as the size of your solar power system, the capacity of the home battery, your energy consumption, and local energy prices. Here are some ways solar panels and a home battery can contribute to cost savings:

1. Self-generation of energy: With solar panels, you generate your own electricity, reducing your dependency on the electricity grid. This decreases your purchase of electricity from the energy supplier and can result in significant savings on your electricity bill.

2. Net metering: If your solar panels produce more energy than you consume at any given time, you can feed the excess energy back to the electricity grid. Depending on your energy supplier’s policy, this can lead to a feedback fee or credits on your energy bill.

3. Optimization of self-consumption: With a home battery, you can store the excess energy your solar panels produce for later use, such as in the evening or on cloudy days. This increases your self-consumption and reduces the amount of electricity you need to draw from the grid. This can lead to additional savings on your energy bill.

4. Tariff optimization: Some energy suppliers have variable rates based on the time of day. With a home battery, you can store energy during periods of lower rates and use it during periods of higher rates. By shifting your energy use to cheaper times, you can reduce your energy costs.

5. Backup power source: A home battery can serve as a backup power source during power outages. This can help you save costs by preventing the loss of perishable goods, maintaining essential equipment, and avoiding the costs of an external generator.

The exact amount of savings depends on your household's specific circumstances and the energy market in your region. It is advisable to consult an energy advisor or use online calculators specifically designed to estimate the potential savings with solar panels and a home battery. These resources can help you gain a better understanding of the potential savings and payback period of your investment.