Calculate Home Battery

Calculate Home Battery

With this home battery calculator, you can easily determine which battery capacity best matches your electricity consumption and solar panel installation. Additionally, you gain insight into the potential annual savings and an indication of the payback period.

A home battery stores surplus solar power that you do not use immediately during the day. This stored energy can be used later, for example in the evening or night when the solar panels do not produce electricity.

Why use a home battery?

More and more households choose a home battery to use more of their self-generated solar energy. Without a battery, surplus electricity is often fed back into the grid. With a home battery, you can utilize a larger portion of this energy yourself.

Advantages of a home battery:

• Use more of your own solar power.
• Less dependence on energy suppliers.
• Lower energy costs.
• Less feed-in to the grid.
• Better utilization of solar panels.

What home battery capacity do I need?

The ideal capacity depends on:

• Annual electricity consumption.
• Solar panel yield.
• Daily energy consumption.
• How much electricity you use immediately.
• Future expansions such as a heat pump or electric car.

For many households, a suitable home battery ranges between 5 and 15 kWh. However, the right capacity varies per situation.

Is a home battery profitable?

The profitability of a home battery depends on multiple factors, including the purchase price, electricity price, feed-in tariff, and your own energy consumption. As energy prices rise and feed-in tariffs decrease, a home battery can become financially more attractive.

Frequently Asked Questions

How large should a home battery be?

That depends on your daily surplus electricity and energy consumption. For many households, a capacity of 5 to 15 kWh is sufficient.

Does a home battery work without solar panels?

Yes. Some home batteries can be charged with electricity from the grid and used later when electricity prices are higher.

Can a home battery fully power a house?

No, usually not for extended periods. A home battery is intended to store energy temporarily and use it later.

What is the lifespan of a home battery?

Most modern home batteries last about 10 to 15 years, depending on the battery type and number of charge cycles.

What is the difference between a home battery and a home accumulator?

There is practically no difference. Both terms are used for a system that stores electricity for later use.