A home battery, also known as a home accumulator, is a system that stores electrical energy for future use in a household. It is often combined with solar panels but can also be charged via the regular power grid. This technology makes it possible to utilize generated energy efficiently, even when demand is higher or no sunlight is available.

Main functions of a home battery

1. Storage of solar energy:
   A home battery captures excess energy generated by solar panels during the day. This energy can be used later, for example, in the evening.

2. Backup power supply:
   During a power outage, a home battery can supply power to essential devices, such as lighting, refrigerators, and medical equipment.

3. Optimization of energy costs:
   By storing energy during off-peak hours (when prices are lower) and using it during peak hours, households can reduce their energy bills.

4. Independence from the grid:
   A home battery offers households more autonomy as they are less dependent on the power grid.

Specifications of a home battery

• Capacity:
  The capacity is measured in kilowatt-hours (kWh) and can range from a few kWh to dozens of kWh, depending on the model.

• Lifespan:
  Modern home batteries last on average between 10 to 20 years, depending on the type and usage.

• Charge time:
  Fully charging a home battery can take several hours to a day, depending on battery capacity and the energy source.

• Types of batteries:
  Most home batteries use lithium-ion technology, although lead-acid and other types are also available.

Frequently asked questions

1. Is a home battery only useful with solar panels?
   No, a home battery can also be used without solar panels by charging it via the electricity grid.

2. Can a home battery feed energy back into the grid?
   Yes, some models offer this possibility. This allows excess energy to be fed back, which can provide financial benefits in some regions.

3. How much does a home battery cost?
   Costs vary widely but usually range between €5,000 and €15,000, including installation. Subsidies can reduce these costs.

4. Which devices can be powered by a home battery?
   Depending on the capacity, devices such as lighting, refrigerators, computers, security systems, and even heating systems can be powered.

5. How is a home battery maintained?
   Most modern systems require minimal maintenance, but regularly checking the performance and storage system is recommended.

How do you integrate a home battery into your household?

Installing a home battery not only offers financial benefits but also contributes to more sustainable energy use.