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Solar battery storage from Sharp

By storing photovoltaics, you can use solar power 24 hours a day

Using a photovoltaic system in conjunction with the solar panels produces electricity as long as the sun is shining. Especially in the private sector, electrical energy is usually needed when the photovoltaic system is not producing any electricity—i.e. morning and evening. The solution to the problem is photovoltaic storage, also called solar power storage or solar batteries. These batteries are mostly designed specifically for use in photovoltaic systems. Solar power systems with solar energy storage significantly increase the independence of the electricity supplier because they store the electricity and then release it when needed. 

✓   Low electricity bills       ✓   Independence from the power grid       ✓   Your own personal energy consumption is optimized

Achieve maximum independence

With solar battery solutions, it is now possible to store solar power during the day and use it at night. This can significantly increase your own consumption.

Operating solar system and storage throughout the day:

Morning

The energy generated by the solar system is used for its own consumption. Excess energy is stored in the solar battery.

Afternoon

With a fully charged battery, the system continues to provide the ability to use stored energy for self-consumption. Excess energy is fed into the power grid.

Evenings

After sunset, the system provides the stored energy from the battery for the homeowner’s own consumption.

Nights

Even at night, the system continues to provide stored energy. If the capacity of the battery is insufficient, then additional electricity is purchased from the public power grid.

Photovoltaic storage: Dimensioning, capacity, grid independence

The battery capacity in kWh indicates how much energy can be stored. When comparing battery capacities, care should be taken not to compare the total capacity but rather, the usable capacity. First of all, the required battery capacity depends on the size of your PV system. As a first indication of battery capacity, it can be said that the system size (e.g., 5 kWp) often equals approximately the capacity value of the battery (e.g., 5 kWh). However, this is only a very rough approximation. The optimum battery volume for your home is also dependent on your power consumption and your desired degree of energy independence. 

Solar storage costs

Prices for solar storage have fallen steadily in recent years, so now is the ideal time to upgrade your solar system. Initially, various technologies were on the market, meanwhile, the lithium-ion technology has prevailed. Advantages compared to other solutions are the low weight, the excellent number of charging cycles, the high usable capacity and the batteries longevity.

Important factors for battery storage

The photovoltaic storage you choose should be adapted to the respective PV system. This ensures that all components interact optimally and that the maximum amount of self-generated energy is extracted and used. The following aspects should therefore be taken into account when selecting:

  • Battery capacity

    The battery capacity in kWh indicates how much energy can be stored. The required battery volume depends on the size of your solar system, the amount of power consumed and the preferred degree of energy independence. Some battery systems can be upgraded later. This allows you to adjust the capacity to your changing needs.

  • Storage location

    Batteries should be stored dry, and a storage location that is not too cold helps performance. An optimal installation location for a battery is a utility or cellar room. Current lithium-ion batteries now have a small footprint.

  • Guarantees

    There are two important guarantee types for batteries:


    The time-compensation guarantee

    This warranty describes the remaining capacity of the battery after a certain period of time. 

    Product guarantee

    You receive a product guarantee that covers material and manufacturing-related defects.

  • Complete cycles

    The process of charging a solar battery once and then discharging it to the discharge depth is called a full cycle. A full cycle can also consist of several sub-cycles (charging and discharging). The number of specified cycles is also an important quality feature,

Choose the right battery from our wide range of products:

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