Home / fothermo News / The advantages of a solar boiler over a balcony power plant
Die Vorteile eines Solarboilers gegenüber einem Balkonkraftwerk

The advantages of a solar boiler over a balcony power plant

For many families who are not at home during the day, the question arises as to how they can best benefit from solar energy. In this article, we compare the advantages of an 80-litre solar boiler with a balcony power station. Especially in situations where little electricity is used during the day, the solar boiler proves to be the more efficient choice.

Advantages of a solar boiler compared to a balcony power plant

In today's world where renewable energy is becoming increasingly important, many homeowners are looking for ways to optimize their energy consumption while protecting the environment. Two popular options are the solar boiler and the balcony power plant. In this article, we explain the advantages of a solar boiler over a balcony power plant.

What is a solar boiler?

A solar water heater is a system that uses solar energy to heat water. The electricity is captured by photovoltaic panels and sent to a water tank where the water is heated and stored. This technology is particularly efficient and environmentally friendly because it uses the free and inexhaustible energy of the sun.

What is a balcony power plant?

A balcony power plant, also called a mini photovoltaic system, is a small solar system that is installed on a balcony or terrace, for example. These systems are easy to install and can be connected directly to the household power grid. However, they usually require a battery storage system to store excess energy that is not immediately used. Without a battery storage system, the excess energy is fed into the grid without the homeowner benefiting from it.

Advantages of a solar boiler

1. High efficiency in heat generation

A solar boiler uses solar energy directly to heat water, which is particularly efficient. Compared to electricity generation by a balcony power plant, less energy is lost here because the direct current from the photovoltaic modules in the solar boiler is converted directly into hot water.

2. Storage of energy

The solar boiler stores the heated water in an insulated tank, which means the energy can be used even when the sun is not shining. This is a clear advantage over a balcony power plant, which cannot store the excess energy.

3. Cost savings

By using a solar boiler, households can significantly reduce their energy costs. Heating water accounts for a large proportion of energy consumption in a household. With a solar boiler, around 75% of this demand can be met free of charge.

4. Environmental friendliness

A solar boiler is one of the most environmentally friendly ways to heat water. Since no fossil fuels are used, no harmful emissions are released. In addition, the direct use of solar energy reduces the ecological footprint.

Disadvantages of a balcony power plant

1. Limited energy utilization

Without battery storage, a balcony power plant can only use the energy generated when it is needed directly. Excess energy is fed into the grid and does not provide any direct benefit to the homeowner.

2. Lower efficiency

The conversion of solar energy into electrical energy and its subsequent use to heat water or heating is less efficient than the direct use of the direct current from the photovoltaic modules by a solar boiler.

3. Higher initial investment if storage is required

If a battery storage system is retrofitted to increase the efficiency of a balcony power plant, the initial investment increases significantly. A solar boiler is often cheaper to purchase, can be charged and discharged as often as required and offers immediate benefits.


A solar boiler offers numerous advantages over a balcony power plant without battery storage. The high efficiency, the possibility of energy storage, cost savings, long lifespan and environmental friendliness make the solar boiler an excellent choice for homeowners who want to optimize their energy supply. While balcony power plants also have their advantages, a solar boiler is often the more sustainable and economical option.