Generate clean electricity with a powerful balcony power plant

In view of rising electricity prices, balcony power plants are becoming increasingly popular. These small solar systems take up little space and save money when generating electricity. Not only do they protect your wallet, but also the environment and climate. A big advantage is that as a tenant you can install and use these PV systems even without the landlord's consent. Depending on the model, the balcony power plants deliver an output of 300, 600, 800 or even 1500 watts. There are both plug-free models and models that you simply plug into the socket. Below you will find out more about the possibilities of generating electricity with a balcony power plant.

How do mini PV systems work?

A mini PV system usually consists of one or two or four PV modules that achieve an output of 600, 800 or 1500 watts. Typically, the devices use a microinverter to convert direct current to alternating current. This can then be used to operate commercially available electrical devices. The connection is made via a power cable that is plugged into a socket on the balcony or in the apartment. The PV module is already connected to the house network. The solar power generated then supplies all devices that are currently in operation.

Save electricity with a mini PV system

When the mini PV system supplies electricity, the electricity meter runs slower. The devices being operated then draw their energy from the PV system and less electricity is required from the grid. If the sunlight is intense enough, the meter will even stop completely while the router, refrigerator, computer and other devices are running. If the PV system produces more electricity than your household uses, the excess energy is transferred to the public power grid.

The assembly of a mini PV system

The modules of a mini PV system can be installed in a wide variety of locations. A roof area is not necessarily required. The system can be attached to the house facade, on the balcony, on a flat roof or on the terrace. Suitable brackets are available for every installation location. The performance of a PV system for roof mounting is significantly higher, but the purpose of a mini PV system is to only cover acute electricity needs and draw less electricity from the grid. With such a system, savings of 50 to 100 euros per year are possible. For larger systems with 600 watts, you will save an average of 100 to 200 euros. The savings rate of modern mini PV systems is between 10 and 20 percent. This means that the costs for a system are recouped in eight to 12 years. Maybe even faster if electricity prices rise.

Mini PV systems with inverters

A powerful microinverter is important for the efficient operation of a mini PV system. It converts the electricity generated into alternating current, which can be fed into the home network and used by conventional electrical appliances. In order for the mini PV systems to comply with the regulations, the inverter output must not exceed 600 watts. However, there are plans to increase the maximum permissible power to 800 watts. However, larger balcony power plants can have their output reduced.

What performance do mini PV systems achieve?

In order to get the optimal performance from mini PV systems, you need a good inverter and the PV modules must be optimally aligned with the sun. The correct location should face south and the modules should have an inclination of around 35 degrees to the ground. Systems with a 600 watt inverter have a maximum output of 750 watts. In order to achieve good electricity yield all year round, you should combine PV systems with a higher nominal output with an inverter that is slightly lower. This means you can produce solar power even in winter and in bad weather.

The prices for mini solar systems

While the prices for mini solar systems have been high in recent years due to delivery bottlenecks, the price level is currently cheaper. Depending on the model, size and performance, systems are available at prices between 400 and 1,000 euros. Delivery times have shortened significantly. In addition, VAT is no longer charged on mini PV systems. The purchase usually pays for itself in less than 10 years.

What should you pay attention to when buying a mini solar system?

Anyone who decides on a mini solar system should value high material and manufacturing quality. Check whether the shape and size of the modules match the planned installation location. When purchasing, pay attention to delivery times and shipping costs. Also find out about mounting options and corresponding devices. Most mini PV systems are made up of two modules. Theoretically, others can also be added. Find out what power the system delivers and which inverter you need to operate it. Also ask what manufacturer warranty applies. The manufacturers give a 15-year guarantee on most modules. With high-quality systems, you can expect a total service life of up to 30 years. Here are the most important purchasing tips at a glance:

• Material- and manufacturing quality
• Wattage
• Assembly method and assembly devices
• Inverter performance
• Delivery times
• Shipping
• Manufacturer's warranty

Caring for the mini solar system

Over time, dust and pollen settle on the surface of the PV modules. In order for the balcony power plant to achieve full performance, the surfaces must be cleaned regularly. Do not use harsh cleaning agents or brushes for this. Simply rinsing with water is enough.