Solar system with storage: What you need to pay attention to in 2024

Summary

• Invest in a complete package to get the most out of your solar system with storage. This includes solar panels, storage systems, inverters and all the necessary components that work together perfectly to maximize energy efficiency.
• Calculate exactly how big your solar system and storage need to be, based on your daily energy consumption. A rule of thumb is 1 to 1.5 kWh storage capacity for each kWp of installed PV power. This helps you to cover your own needs as much as possible with self-generated electricity and makes you less dependent on the public grid.
• Take advantage of financing opportunities and subsidy programs to reduce the costs of your solar system with storage. KfW Bank offers low-interest loans and many states and municipalities have their own support programmes. In addition, households can benefit from a VAT exemption for PV systems under 30 kWp.
• Pay attention to the quality of the components of your solar system and their service life. High-quality components such as PV modules, inverters and battery storage systems are crucial for the long-term high performance and cost-effectiveness of your system.
• Seek expert advice to determine the optimal capacity of your PV system and storage system based on your individual needs. Experts can help calculate the ideal setup for your specific situation and ensure that your system is running at maximum efficiency at all times.

Advantages of investing in a solar system with storage for domestic use in 2024

A solar system with storage at home means using more sunlight directly for your own consumption. This reduces bills because less energy is needed from the power grid.

Maximizing self-consumption of solar energy

With a solar system with storage, homeowners maximize their self-consumption of solar energy. This means that they use more solar power directly for their household. Homeowners can increase their self-consumption to up to 70%.

This significantly reduces the electricity bill, as less energy is required from the public power grid.

Each installed photovoltaic system in Germany generates an average of about 1000 kWh per 1 kWp per year. By storing solar energy, you can also use solar power at night or on cloudy days.

This increases energy independence and supports the energy transition towards renewable energies. Solar energy thus becomes the main source of energy in the household.

Reduction of dependence on the public grid

By maximizing self-consumption of solar energy, households create an important prerequisite for significantly reducing their dependence on the public grid. A solar system with storage makes it possible to store excess energy instead of feeding it directly into the grid.

This allows you to access this stored energy even after sunset or on cloudy days. This is particularly advantageous for households with high energy consumption, such as when operating heat pumps or electric cars.

By purchasing less electricity from the public grid, you not only save costs, but also increase your flexibility in energy use. This makes your household less dependent on electricity price increases and at the same time contributes to a more sustainable energy supply.

Investing in a PV system with storage is therefore an essential step towards self-sufficiency and reducing dependence on the public grid.

Key considerations before buying a solar system with storage

Before you spend money on photovoltaic panels and batteries, think carefully. Find out about the total cost and how well your property can capture sunlight.

Need for a complete package

A complete package for photovoltaic systems and storage systems is indispensable in order to maximize independence from conventional energy providers. It contains everything you need for efficient energy generation and storage: solar panels, a storage system, inverters and all the necessary components.

In this way, you protect yourself against rising electricity prices and make your household more energy-efficient.

A complete package is the key to making full use of renewable energy in your home.

By investing in such a package, you ensure that all parts work together perfectly. This not only increases the effectiveness of your solar system, but also makes it easier to install and maintain.

You benefit from a sustainable energy supply that is precisely tailored to your needs.

Costs of PV systems with storage in 2024

Prices for solar systems with storage will vary in 2024 depending on the size and type of system. For a typical single-family home, the total cost is between approximately 12,000 and 24,000 euros excluding VAT.

This amount covers both the solar panels and the storage system. Since PV systems up to an output of 30 kWp are exempt from 19% VAT, homeowners can save additional money when installing their system.

Buyers should expect average acquisition costs of 1400 to 2200 euros per kWp. These costs include both the power generation components and the storage facilities that ensure an efficient energy supply to the household.

Since prices are subject to change, it is important to obtain up-to-date quotes and consider possible renewable energy subsidy programs.

Calculation of power and capacity based on household needs

After examining the costs of photovoltaic systems and storage systems for 2024, it is important to know how to tailor the output and capacity of these systems to the exact needs of a household.

To determine the ideal size of your PV system, you should look at your daily electricity consumption. The rule of thumb is that each kilowatt peak (kWp) of installed capacity of photovoltaic modules requires 1 to 1.5 kilowatt hours (kWh) of storage capacity.

This will help you get the most out of your facility and reduce your dependence on the public grid.

For an accurate calculation, homeowners need to know their average energy consumption. This is where energy efficiency and a sustainable energy supply come into play. This is the only way to determine how much energy is generated and how large the storage needs to be to store excess energy for times of less solar radiation.

Also consider the capacity of the storage system in relation to the output of the PV modules in order to achieve an optimal balance between energy generation and storage.

Advantages of a complete package consisting of a PV system and a storage system

A complete package of a solar array and an energy storage device comes with everything you need to make and store your own electricity. This allows you to use solar energy efficiently and save money at the same time.

Increasing the average self-consumption of solar energy to 70%

By using a complete package consisting of a photovoltaic system and storage device, the self-consumption of solar energy can increase significantly. In the past, households used a smaller proportion of their self-generated energy directly.

With this technology, they now achieve up to 70% utilization. This leads to a significant reduction in the cost of electricity bills.

The more solar power you consume yourself, the less dependent you are on the public grid and the more you save.

These solutions also contribute to a more sustainable energy supply by reducing the need for electricity from fossil sources. Customers not only benefit from lower energy costs, but also make a positive contribution to environmental protection.

Annual yield of a solar system in Germany

In Germany, a photovoltaic system generates an average of about 1000 kWh of electricity per year for every kilowatt of installed capacity. This depends heavily on the location of the house and the orientation of the roof surface.

In the south of the country, where the sun shines more often, the yield can be higher than in the north.

Eine Solaranlage nutzt die Kraft der Sonne, um Strom zu erzeugen. Hausbesitzer können diesen Strom verwenden, um ihre Abhängigkeit vom öffentlichen Netz zu reduzieren. Mit einer passenden PV Anlage und einem Speicher kann ein Haushalt einen bedeutenden Teil seines Energiebedarfs decken.

Dies macht Solaranlagen zu einer klugen Wahl für nachhaltiger Energieversorgung.

Vorteile für Haushalte mit hohem Energieverbrauch

Haushalte mit großem Bedarf an elektrischer Energie finden in Solaranlagen mit Speicher eine ideale Lösung. Besitzer von Wärmepumpen oder Elektrofahrzeugen spüren die Vorteile ganz besonders.

Sie senken ihre Energiekosten deutlich und genießen eine größere Flexibilität bei der Nutzung ihrer Geräte. Durch die Eigenproduktion von Strom werden sie unabhängiger vom öffentlichen Netz und können ihre Energieverbrauchsspitzen besser abdecken.

Diese Unabhängigkeit bedeutet auch, dass weniger Strom zu Hochpreiszeiten vom Netz bezogen werden muss. So macht sich die Investition in eine Solaranlage mit Speicher für Haushalte mit einem hohen Energiewendepunkt schnell bezahlt.

Die nächste wichtige Überlegung für potenzielle Käufer ist das Komplettpaket aus PV-Anlage und Speicher, um den höchsten Nutzen zu erzielen.

Gesamtkosten eines Komplettpakets für ein typisches Einfamilienhaus

Ein typisches Einfamilienhaus kann von der Umsatzsteuer-Befreiung für Photovoltaikanlagen unter 30 kWp stark profitieren.

MwSt.-Befreiung für PV-Anlagen unter 30 kWp

Für Besitzer kleiner Photovoltaik-Anlagen gibt es gute Nachrichten. Wenn Ihre Anlage weniger als 30 Kilowatt peak (kWp) leistet, müssen Sie keine Mehrwertsteuer (MwSt.) von 19% zahlen.

Das gilt sowohl für die Anschaffung der Solarpanels als auch für die Installation eines Speichersystems. Diese Befreiung vom Umsatzsteuergesetz senkt die Kosten erheblich und macht den Schritt zu erneuerbaren Energien attraktiver für Privathaushalte.

Die Regelung zur MwSt.-Befreiung unterstützt Sie dabei, Solarstrom effizient und kostengünstig zu nutzen. Es ist ein wichtiger Anreiz, der hilft, die anfänglichen Ausgaben für Photovoltaik und Speicherlösungen zu reduzieren.

Denken Sie daran, diese Steuervorteile in Anspruch zu nehmen, wenn Sie planen, Ihr Zuhause mit einer nachhaltigen Energielösung auszustatten. Im nächsten Abschnitt gehen wir auf die durchschnittlichen Anschaffungskosten pro kWp oder kWh ein.

Average acquisition cost per kWp or kWh

The average acquisition costs for a photovoltaic system with storage system are between 1400 and 2200 euros per kilowatt peak (kWp). This includes not only the solar panels themselves, but also the cost of the inverter and installation.

For complete packages that contain everything necessary for the installation of a solar system, the costs rise to 2200 to 3000 euros per kWp. These packages make the process much easier because they are a one-stop shop and no additional purchases are required.

Invest in the future by investing in solar energy today.

Now it is important to understand how these investments can be made even more attractive through financial support and funding programs.

Financial support and subsidy programs for PV systems with storage systems

KfW Bank supports owners with low-interest loans for the purchase of battery storage systems. This makes investing in a solar system with storage more economical. In addition, many states and municipalities offer their own funding programmes.

These help to further reduce the costs of installing a PV system with storage.

Regional differences also play a major role in the availability of funding. It is therefore worthwhile to also check local offers. In this way, the financial burden of buying a PV system with storage system can be significantly reduced.

Now it is a matter of the cost efficiency and the payback period of such solar systems.

Cost efficiency and payback period

Now that we have discussed the various financial support options and subsidy programs for photovoltaic systems with storage, it is important to look at the cost efficiency and the time it takes to pay for this investment.

Solar systems with a storage system can pay for themselves in 10 to 15 years. This is an important factor in your decision compared to systems without storage, where the payback period can be 1 to 2 years shorter.

Investing in solar systems with storage makes a significant contribution to reducing your electricity bills. At the same time, they increase your independence from the public power grid.

Despite the higher initial investment, the long-term savings from self-consumption of generated electricity mean that these systems are definitely worthwhile for homeowners.

It's a wise decision to consider both the short-term and long-term financial aspects before making a final decision.

Factors influencing profitability

Many things determine how profitable your solar energy system will be. The solar radiation on your house roof and the quality of the solar modules play a major role.

Available roof area and orientation of the roof

The size of your roof will determine how many solar panels you can install. A large roof means you can place more panels, resulting in more solar energy produced.

The orientation of the roof also plays a major role. South orientation is ideal in Germany for capturing sunlight throughout the day. East and west are also good, but the energy yield is lower compared to the south orientation.

It's important to know how much energy you need and whether your roof can produce that amount. For example, experience in southern Germany shows that optimal roof orientation and surface can greatly improve the annual yield.

After considering these factors, the next thing to consider is the performance and lifespan of the components.

Performance and service life of components

High-quality components are crucial for the long-term performance and service life of a solar system with storage. These components determine how well the system converts sunlight into electricity and how long it remains efficient.

Some key components include PV modules, inverters, and battery storage systems. Users should make sure that these parts are of high quality to get the most out of their investment.

Regular professional inspections also help to keep the system in top condition and ensure maximum performance for years to come.

For optimal function and cost-effectiveness, it is essential to invest in high-quality components and to have their condition checked regularly by experts.

Adaptation of the storage capacity to the performance of the PV modules

The right size of the energy storage system is crucial for your solar system to run efficiently. Suitable inverters and accurate calculations ensure that you get the most out of your solar energy.

Suitable inverters

A well-selected inverter plays a key role in the performance of your solar system with storage. It converts the direct current that your panels generate into alternating current that your home can use.

For maximum efficiency, the inverter must match both the output of the PV system and the storage system. An unsuitable inverter can significantly reduce the effectiveness of your system and thus provide less electricity for home use.

It is important to choose an inverter that complements the capacities of your system. Experts can help you find the perfect combination of PV system, storage system and inverter.

They look at your daily energy requirements and ensure that the inverter can meet these requirements efficiently. This ensures that your system is always operating at maximum performance and delivering optimal results.

Calculation of the required storage capacity based on the household's daily electricity consumption

To calculate the storage capacity you need for your home, you need to know your daily energy needs. This step is crucial to achieve the desired degree of independence from external energy sources.

You should plan between 1 and 1.5 kWh of storage capacity for each kWp of installed PV power. This means that if your solar system has an output of 5 kWp, for example, you should consider a storage system with a capacity between 5 and 7.5 kWh.

The calculation of the storage capacity is based on theactual energy demand of the household.

This formula will help you determine exactly how big your storage needs to be to power your everyday life with solar power. By sizing your storage system correctly, you can ensure that no excess solar power is left unused and that you can take full advantage of your investment.

Next, we should look at matching the storage capacity to the performance of the PV modules.

Examples of roof area and PV system costs in southern Germany

In southern Germany, the costs for photovoltaic systems vary greatly, depending on the size of the roof area and the selected storage capacity. A typical single-family house with a roof area of 100 square meters can be equipped with a system that produces between 4 and 10 kWp.

The acquisition costs of such a system without storage are often between 9,000 and 15,000 euros, depending on the quality and performance of the components. With the additional storage system, the costs will increase by about 4,000 to 8,000 euros.

For households that can claim a VAT exemption under the Value Added Tax Act, these costs are reduced accordingly. Subsidy programmes and feed-in tariffs also offer the opportunity to recoup part of the investment through saved electricity costs or remuneration for the electricity fed into the grid.

This also makes the purchase of a photovoltaic system more financially attractive.

Recommendation of expert consultants to determine the optimal PV system capacity and storage of excess solar energy

Experts recommend seeking professional advice to precisely determine the ideal size of a photovoltaic system and the storage required for excess energy.

Expert advice can help you to tailor your system perfectly to your household and your electricity consumption. You'll consider both the roof area and the orientation of the roof to ensure you get the most out of your investment.

These professional consultants use their experience to design a PV system that meets your needs not only today, but also in the future. They will also advise you on the current funding programmes and ways to optimise VAT in accordance with the VAT Act.

This ensures that your solar system with storage system is not only efficient, but also economical. After this detailed planning, you can be sure that your system is running optimally.

Inference

A solar system with storage will bring great benefits to your home from 2024. It lowers your electricity bills and makes you less dependent on the grid. Think carefully about what size and capacity will suit your household.

The technology behind solar panels and battery storage systems is evolving rapidly. Therefore, it is worth consulting experts to find the best solution.

Frequently Asked Questions