Maximise the output of your solar park

Repowering of solar systems

Modernisation & expansion for increased energy yield

Higher yields, lower costs

The Repowering of solar parks is the key to optimising energy generation and maximising the efficiency of your systems. By upgrading outdated components and technologies, solar parks can significantly increase their performance. This leads to an increased energy yield, which in turn increases the profitability of your investment. Repowering makes it possible to replace outdated modules and inverters with state-of-the-art technologies, which not only increases energy production but also reduces maintenance and operating costs. In addition, repowering solar parks helps to minimise the environmental footprint and improve the sustainability of your energy production process. Invest in the future of your solar energy systems through repowering and secure long-term benefits in terms of yield, efficiency and environmental friendliness.

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When is repowering worthwhile?

The decision to repower a solar installation depends on several factors. One key indicator is the age of the existing system. After around 10-15 years, the efficiency of solar systems decreases as the performance curve of solar modules falls. New and more efficient technologies are also available. If your system reaches this point and energy production decreases, repowering is worth considering. Rising repair and maintenance costs also play a role. If profitability is jeopardised, repowering can be more cost-efficient in the long term. A careful economic analysis, taking into account costs and energy yield, is crucial to determine the right time for repowering. This helps to estimate long-term profitability and added value and to make an optimal investment decision.

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From evaluation and planning to repowering

The Time to repower your solar system? should be based on a thorough technical and economic assessment to ensure that the expected benefits justify the cost of the project.

Therefore,a technical assessment of theexisting system should be carried out first, including an inspection of the solar modules,nverters, cabling and mounting structures. In addition, use an economic analysis to weigh up the costs of repowering against the expected long-term savings and yields. This helps to assess the profitability of the project. Be aware of any licences and regulations and consider the environmental impact of repowering, especially if old modules and components need to be disposed of.

When repowering, it is also important to ensure that the new components are of high quality and meet current standards. After installation, regular performance checks should be carried out to ensure that the system is working as expected.

From the technical assessment to the preparation, planning and realisation of the repowering of your solar system - we support you with your project!

Step by step to repowering your solar system

Feststellung Repowering-Bedarf bei Solaranlagen

Determining the need for repowering: Technical & economic evaluation

Planung des Repowerings bei Solaranlagen

Planning repowering: Define measures and select components

Durchführung des Repowerings bei Solaranlagen

Implementation of repowering: Professional installation of the new components

Überwachung & Leistungsprüfung beim Repowering von Solaranlagen

Monitoring & performance testing: Testing the technical functionality of the solar system

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7 good reasons for repowering your solar system

  • Increased performance: Over time, older solar modules can lose efficiency. Repowering with modern, more powerful modules can increase the energy production of the system.
  • Extending the service life:Repowering makes it possible to extend the service life of the solar system by replacing outdated components. This protects your original investment and increases the return.
  • Cost efficiency: Repowering can be more cost-efficient in the long term than the ongoing repair and maintenance of obsolete components. It also reduces the need for frequent repairs.
  • Technological advances: Repowering allows you to benefit from the latest technological advances in solar technology that offer better performance and efficiency .
  • Environmental friendliness: A more efficient solar installation helps to reduce the ecological footprint and maximise the clean energy yield, which is more environmentally friendly overall.
  • Increase in value: Repowering can increase the value of your solar system, which can be an advantage when reselling or using it as an investment.
  • Safety: Newer components are often safer and more reliable, which reduces the risk of failure and damage.

Repowering or revamping?

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Difference between solar repowering and revamping

In the solar industry, the terms repowering and revamping play a key role when it comes to optimising existing photovoltaic systems. Both approaches aim to increase the efficiency and performance of solar parks, but their methods and applications differ significantly.

For a long time, repowering in the solar industry was characterised by regulatory restrictions that prevented any changes to the systems in order not to affect the remuneration under the German Renewable Energy Sources Act (EEG). However, these restrictions have changed. Since 1 January 2023, the EEG has given operators of ground-mounted solar parks the opportunity to replace older modules with more powerful ones. With solar repowering, the nominal output of the system is increased to restore the original output. This enables more efficient utilisation of the existing area and adaptation to technological advances.

revamping on the other hand, refers to not changing the nominal output of the system, or only changing it within the legal framework, while at the same time replacing old components with more modern ones. The main purpose of revamping is to maintain the legally agreed tariff. The advantages are that new modules with a higher output can be installed until the original nominal output is reached. This means that the old nominal output is achieved with fewer modules, which leads to free space. This space can be used to expand the system.

A key factor in revamping is the degradation of solar modules, which averages between 0.5 and 1 per cent per year. This gradual reduction in output can result in the nominal output of a solar park being less than 90 per cent of its original value after ten years. The change in the law opens up new opportunities for operators of solar parks to bring ageing systems back up to their original output.

Repowering or revamping? are challenging projects that require precise legal and technical scrutiny. Aspects such as the dimensions of the modules, the statics of the substructure, the string cables, the inverter, the monitoring system and the grid connection must be carefully considered. A detailed economic evaluation is also necessary to assess the profitability of the conversion work.

The future of Repowering or revamping? in the solar industry looks promising, especially for installations that are being phased out of subsidies and are to continue operating. Careful planning and experienced partners are crucial to ensure the quality of the systems in the long term and to meet the growing demands of renewable energies .

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FAQ Repowering

Frequently asked questions on the topic of repowering solar installations

Repowering refers to the modernisation or conversion of existing solar installations in order to increase their output and efficiency.

The right time for repowering depends on the age of the plant, the decreasing efficiency and the profitability and should be determined after careful analysis.

Repowering can offer increased energy production, a longer service life for the turbine and the utilisation of modern technologies.

The costs for repowering vary depending on the scope of the project and can include the replacement of components, installation and authorisations.

The steps include planning, authorisations, installation and commissioning and should be carefully planned and coordinated.

Repowering can have a positive impact on the environment by increasing efficiency and increasing energy yield, which can lead to a reduction in greenhouse gas emissions.

The choice of technologies and components depends on the repowering objectives, but may include the use of more efficient solar modules, inverters and mounting systems.

The availability of government incentives and support programmes varies by region and country and should be researched to obtain financial support.

Yes, repowering can present legal and regulatory challenges, including permitting, grid connection and contractual issues that need to be carefully addressed.

Long-term performance and efficiency can be optimised through regular maintenance, monitoring and possibly future repowering.

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