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 your home battery, your energy consumption, and local energy prices. Here are some ways in which 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 reliance on the electricity grid. This decreases your purchase of electricity from the energy supplier and can lead to significant savings on your electricity bill.

2. Net metering: If your solar panels produce more energy than you consume at a certain time, you can feed the excess energy back into the electricity grid. Depending on your energy supplier's policy, this can result in a reimbursement 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. Rate optimization: Some energy suppliers offer variable rates based on the time of day. With a home battery, you can store energy during periods with lower rates and use it during periods with 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 an outage. This can help you save costs by preventing the loss of perishable goods, maintaining essential equipment, and avoiding the cost of an external generator.

The exact amount of savings depends on the specific circumstances of your household and the energy market in your area. 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 the payback period of your investment.