How you can use a balcony power plant and a PV system simultaneously: Balcony power plant in addition to a PV system

Photovoltaics rethought: Combination instead of either/or

The energy transition is no longer limited to large rooftops. More and more households are discovering flexible solutions like balcony power plants to generate their own electricity. But many ask themselves: Do you have to choose – or can you operate a balcony power plant in addition to an existing photovoltaic system?

The answer is surprisingly clear: In many cases, a combination is not only possible but also sensible. While classic PV systems are designed for maximum feed-in and long-term planning, balcony power plants offer a quick, cost-effective addition. The combination of both systems opens up new possibilities to increase self-consumption and further optimize energy efficiency.

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Decision Matrix: Balcony power plant, PV system, or both?

The choice between a PV system, a balcony power plant, or a combination heavily depends on individual factors. A classic photovoltaic system is particularly suitable for homeowners with sufficient roof area and a willingness to invest long-term.

A balcony power plant, on the other hand, is ideal for:

• Tenants or apartment owners without roof access
• Users seeking a quick and uncomplicated solution
• Households with low electricity consumption

The combination of both systems becomes particularly interesting when:

• the existing PV system does not fully cover self-consumption
• additional areas like a balcony or terrace can be utilized
• a flexible expansion is desired

This hybrid strategy allows for optimal utilization of existing resources without replacing existing systems.

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Which system is worthwhile for whom

The decision depends heavily on individual living circumstances. A single-family house with a large roof generally benefits more from a classic PV system. Here, larger amounts of energy can be generated and utilized in the long term.

For urban households or apartments without their own roof space, a balcony power plant is often the only way to actively participate in the energy transition. It becomes particularly interesting for households with an already installed PV system that want to further increase their self-consumption.

A typical example: A family owns a PV system, but feeds a large part of the electricity into the grid at midday. At the same time, electricity is expensively purchased in the evening. An additional balcony power plant can specifically generate electricity for self-consumption – especially when the main system is already operating at full capacity or is not optimally aligned.

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Photovoltaics first or balcony power plant first?

This question concerns many newcomers. Essentially: Both paths are possible.

Those planning long-term and with the necessary means often start directly with a PV system. It offers the greatest efficiency and long-term return. A balcony power plant can serve as an addition later.

However, those who want to start small can begin with a balcony power plant. It offers an easy entry into solar energy and enables initial savings without a large investment. Later, the system can be supplemented by a larger PV solution.

The scalability perspective is also interesting: A balcony power plant can serve as a "test phase" before deciding on a larger investment.

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Balcony power plant in addition to a PV system: Is the combination allowed?

One of the most frequently asked questions is: Is it permissible to operate a balcony power plant in addition to an existing PV system?

In Germany, this is generally allowed, but certain conditions must be met:

• Both systems must be properly registered
• The maximum feed-in power (e.g., 800 watts for balcony power plants) must not be exceeded
• The grid operator must be informed

Technical integration is also important. The balcony power plant is usually fed into the household grid via a socket, while the PV system is connected directly via an inverter. Both systems operate independently but can jointly increase self-consumption.

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Economic viability: Is the combination worthwhile?

The combination of a PV system and a balcony power plant can indeed be financially worthwhile – however, this strongly depends on the individual consumption profile.

A decisive factor is self-consumption. The more self-generated electricity is used directly, the greater the savings. Balcony power plants are particularly efficient when they specifically cover base loads, such as:

• Refrigerator
• Router
• Standby devices

A PV system, on the other hand, often produces more electricity than is consumed at the same time. Here, an additional balcony power plant can help to specifically provide energy during times of higher self-consumption.

In the long term, an interesting synergy emerges: The combination reduces electricity drawn from the grid and makes households more independent of rising energy prices.

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Installation of the balcony power plant: quick and easy DIY

A major advantage of balcony power plants is their simple installation. Unlike classic PV systems, no complex construction work is necessary.

Installation is done in a few steps:

1. Attach solar modules to the balcony, facade, or in the garden
2. Connect micro-inverter
3. Connect to the socket

In many cases, installation can be carried out without specialized personnel. Nevertheless, it is advisable to observe basic safety rules and use high-quality components.

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Technical Challenges and Practical Tips

Even though the combination is fundamentally simple, there are a few points to consider:

• Load distribution in the household: Both systems feed electricity simultaneously
• Meter technology: A modern bidirectional meter is recommended
• Module orientation: Different orientations can be useful to cover the daily curve better

A practical tip: While the PV system is often optimally oriented south, a balcony power plant can be deliberately oriented east or west. This distributes the electricity yield better throughout the day.

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FAQ: Frequently asked questions about balcony power plants in addition to PV systems

Can I simply connect an additional balcony power plant?

Yes, provided all legal requirements are met and the system is correctly registered.

Will my self-consumption really increase?

In most cases, yes – especially with targeted use and optimal orientation.

Are there any power limitations?

Yes, balcony power plants in Germany are currently limited to 800 watts.

Do I need a special electricity meter?

A bidirectional meter is recommended, but is often already present.

Can I combine both systems without an electrician?

The balcony power plant can usually be installed by yourself, but if in doubt, a specialist should be consulted.

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Conclusion: The combination as a smart step towards energy independence

The combination of a balcony power plant and a photovoltaic system is more than just a trend – it is a logical step towards a more flexible and efficient energy supply. Instead of choosing between two systems, users benefit from the advantages of both solutions.

While the PV system forms the basis, the balcony power plant provides additional flexibility and optimization. Especially in times of rising electricity prices, this combination is becoming increasingly attractive.

Those who want to actively shape their energy future should therefore not think in "either/or" – but in intelligent combinations.