Buy a solar system
Buy a photovoltaic system for your own roof or invest in a PV system on a leased roof area or in a solar park - we have the best providers for you!
On this page you will find the leading suppliers of rooftop solar systems in Germany. We also introduce you to the world's leading marketplace for commercial photovoltaic systems. You will learn everything you need to know about buying a photovoltaic system. So that you end up buying the solar system that you are completely satisfied with!
Buying a solar system: Is it worth it? Better to buy it yourself or have it built?
The 5 best solar installers to buy a PV system for your own roof?
A large solar investment on other people's roofs or buying a solar park?
Buying a photovoltaic system for your own roof
In Germany, buying a photovoltaic system is a lucrative, secure, sustainable and precisely calculable investment that pays off for anyone with a suitable roof area.
On this page we look at all the advantages of having your own solar system and why you should buy photovoltaics. We also compare the largest providers on the market for you. We also answer the most frequently asked questions and introduce you to the marketplace where you can find a suitable commercial photovoltaic system. This will give you the best possible overview.
Is it still worth buying a photovoltaic system?
Buying a photovoltaic system in 2024 - definitely yes!
If certain conditions are met on your roof, it is worth buying a solar power system. The advantages of having your own photovoltaic system are so significant that it makes sense to consider purchasing a PV system immediately. By buying a solar system, you are initially investing capital. With intelligent financing, however, you can reduce your costs to €0 at the start. The ongoing installments correspond to the monthly payments you would otherwise make to the energy supplier.
Buying a PV system is completely cost-neutral with this option. As soon as the system is paid off, you benefit from free electricity! Another lucrative alternative to a PV system on your own roof is a solar investment on a leased roof or open space.
→ Photovoltaic systems are worthwhile even without your own roof - especially on a larger scale. This is because large systems are cheaper to build than small systems. In addition, you can save on taxes and benefit from the current high electricity prices by feeding directly into the public grid. This makes a direct solar investment a safe and sustainable alternative to a PV system on your own roof.
Buying photovoltaics: What are the advantages of a photovoltaic system?
By purchasing a photovoltaic system, you benefit from many different advantages that are noticeable immediately after the purchase, but also over a longer period of time.
- Save costs in the long term through sustainable investment
The savings from self-generated electricity mean that buying a solar system will pay for itself after around 20 years. The current high electricity prices mean that the payback period is even shorter.
- Protection against rising electricity prices
While grid electricity is becoming more and more expensive, the price for generating your own solar power remains consistently low. By buying a PV system, you protect yourself against rising electricity prices, as you have to buy less electricity from third parties.
- Upgrading the property
By buying a photovoltaic system, you are investing in clean and sustainable energy generation, which leads to an increase in the value of the property itself. A property with a solar system is worth more than a property without a PV system.
- No entry costs for financing
If you want to buy a photovoltaic system, you don't have to use your own funds. With 100% financing, the costs of the solar system can be fully covered by a loan so that the system pays for itself.
- Safe technology proven a million times over
The technology of photovoltaic systems has already proven itself millions of times worldwide. Photovoltaic systems are known for their low-maintenance operation and reliability. A service life of up to 40 years is entirely possible.
- No risk thanks to all-risk insurance
If you want to buy a solar system, it is best not to do so without liability and all-risk insurance. The various solar providers usually already have good contacts and appropriate offers.
What are the requirements if I want to buy a solar system?
Not every roof surface is suitable for the installation of a photovoltaic system. There is no point in buying a photovoltaic system if you have to dismantle it shortly afterwards. A PV system also makes less sense if you have not owned the PV system long enough for it to pay for itself or if the modules are shaded and therefore do not generate sufficient yield.
Only buy a solar system if the roof surfaces are in good condition
If you buy a solar system, it should be installed on your roof surfaces for as long as possible. If your roofs are in need of renovation, it is advantageous not to install the PV system until the renovation has been completed . Otherwise, the system will have to be removed and reinstalled. This causes unnecessary costs.
Only buy a PV system if no demolition or conversion is planned for 30 years
Buying a PV system is only worthwhile if you can generate income over a sufficient period of time. If you are planning to demolish your building within the next 30 years, recalculate whether the purchase is actually worthwhile.
You should not buy a PV system for shaded roof areas
If you want to buy a photovoltaic system that is also affordable, you should pay close attention to whether shadows will fall on the modules. This can be caused by trees, dormers, chimneys or the orientation of the roofs. The orientation should be as south-facing as possible and, ideally, there should be no shading at all.
If your roof is unsuitable for the construction of a photovoltaic system, you don't have to say goodbye to the dream of owning your own PV system: with a solar investment, you can become the owner and system operator of a PV system on a leased roof or open space. Without having your own roof, you can benefit from the many advantages of a PV system.
Buying a PV system with or without an electricity storage system?
A few years ago, there was a significantly higher tariff for surplus electricity fed into the public grid. However, this remuneration has fallen sharply in recent years and months, meaning that the option with an electricity storage system is becoming increasingly economical, although this costs around 40 percent more. With an electricity storage system, around 50 to 70 percent of the electricity generated by the photovoltaic system can be consumed on site.
| with electricity storage | Clean electricity can be used day and night | Higher costs that jeopardize profitability |
| without electricity storage | approx. 40% cost saving | Surplus electricity must be fed into the grid |
Further questions if you would like to buy a solar system
Below you will find frequently asked questions about buying a photovoltaic system.
If you are buying a PV system to power your detached house, you should opt for a system size of between 5 and 10 kWp (kilowatt peak). Depending on which modules are used, you should reckon with 12 to 25 solar panels for your roof when buying a solar power system of this size.
If you want to buy a photovoltaic system, you can also rent one. The difference is that you only pay rent for the system. The landlord takes care of the operation of the system. The rent costs around €50 per month. However, it is more economical in the long term if you buy the photovoltaic system. This is because when renting, you have to enter into a long-term contract anyway and also agree to an entry in the land register.
Conclusion: Instead of renting, buy the solar system and take advantage of favorable financing.
Yes, 100% financing is possible.
Ideally, you should first ask your bank whether financing is possible. Alternatively, you can also make an inquiry with other banks. As KfW Bank does not have its own branches, you will have to request KfW financing via your financing partner. With KfW you benefit from particularly favorable conditions, which at best can be beaten by your house bank.
There are primarily three different subsidies when you buy a solar system:
- 20 years of state-guaranteed remuneration for the electricity fed into the grid. Under the Renewable Energy Sources Act, a consistently high remuneration is paid for the surplus solar power fed into the public grid. The remuneration depends on the year and month in which you purchase your photovoltaic system.
- Financial support via the KfW Bank. You can find an overview of all subsidies here. With such financing, you benefit from particularly favorable conditions.
- If you buy a photovoltaic system, there are particularly attractive tax benefits. It is best to consult your tax advisor for more information.
For modern solar modules and newly built PV systems that have crystalline modules installed, scientists now assume a service life of 40 years or more.
When you buy a PV system, you are making a worthwhile investment for several decades. This is because photovoltaic systems have another major advantage: studies have shown that the efficiency of PV modules hardly decreases over time, and similarly high electricity yields can be achieved even after years of use.
Photovoltaic systems themselves are very low-maintenance. Therefore, when you buy photovoltaics, you should expect that your PV system will only require maintenance every 3 to 4 years.
During such maintenance, the cabling is checked, the mounting of the solar modules is checked and the storage system is tested. The inverter is also usually tested and software updates are carried out if necessary.
Buying a solar system - build it yourself or have it built?
We strongly advise against installing a photovoltaic system yourself!
There are experts who have already installed hundreds of PV systems and know exactly how this works. It is questionable whether it is cheaper to build the PV system yourself. After all, it takes time and if something doesn't go according to plan and errors need to be rectified, you can quickly end up paying more than if professionals take over the installation.
Specific knowledge is required to build a solar power system and just one mistake can lead to major and irreparable damage. Since electricity flows through a photovoltaic system even if it is not yet connected to the power grid, installing it yourself can also be dangerous to life and limb. It is better to decide against installing the system yourself and hire a professional when buying photovoltaics.
Top 5 solar installers in comparison - buy a solar system for your own roof
Would you like to buy a solar system for your own roof? There are hundreds of companies across Germany that specialize in the installation of photovoltaic systems. Both regional providers and large national companies offer the purchase and installation of solar systems. Below we provide you with an overview of the leading companies from which you can buy a solar system. This overview will give you an idea of which provider is best suited to you if you want to buy a solar power system.
TOP 1: Buying a PV system from E.ON Energie Deutschland GmbH
The energy supplier E.ON is the third largest energy supply company in Germany with an annual sales volume of almost 20 billion euros. E.ON not only supplies electricity, but has also been offering the construction of photovoltaic systems on its own roofs for many years.
E.ON commissions certified solar technicians to carry out the work on site. The customer benefits from a consistently high standard of quality and also has a strong partner at his side for the long-term management and maintenance of the PV system. If you buy a PV system here, you are certainly in very experienced hands.
TOP 2: Solaranlage kaufen bei Enpal
Sie können bei der Enpal Ihre eigene Photovoltaikanlage kaufen, diese installieren lassen und auch die Wartung und Verwaltung an die Firma abgeben. Besonders punktet dieses Unternehmen durch ein gutes Preis-Leistungs-Verhältnis und es genießt einen guten Ruf.
All information about the provider is published very clearly on the company's website and the prices can also be viewed publicly. If you want an uncomplicated installation of your solar system and value good service, then you've come to the right place.
TOP 3: enviaM Energie AG
envia Mitteldeutsche Energie AG is one of the most sought-after solar providers on the market, where you can buy your solar system to produce electricity on your own roof. The main focus of enviaM's business is in central and eastern Germany, and the company is regarded as the leading regional energy service provider, particularly in the east of the Federal Republic.
The service provider offers a large selection online if you want to buy a PV system. You can currently choose between 11 and 28 modules for your roof. The prices shown on the website generally do not include additional services or scaffolding costs.
TOP 4: Klarsolar GmbH
Klarsolar GmbH, which is based in Heidelberg and operates throughout Germany, is characterized by a complete service that allows you to configure your own photovoltaic system for your needs in just a few minutes. You can then purchase the solar system. This is installed by a regionally operating team.
In addition, you can not only buy a photovoltaic system from this medium-sized company, but also purchase a storage system and other accessories when you buy your solar system.
TOP 5: Solar-Pac
In this online store for photovoltaic systems, you can buy complete solar systems simply and easily. Solar-Pac's offer includes not only the photovoltaic products themselves, but also free telephone advice and individual planning if you want to buy a PV system.
The store also advertises its many years of experience of over 10 years and over 15,000 satisfied customers. Complete PV systems between one and over eight kWp are available, as well as balcony power plants and various storage options.
Inquiry and procedure if you would like to buy a solar system for your own roof
Send contact request
Search for the most suitable provider for you and see for yourself using the online presence. Then send an inquiry to the provider in question.
Processing the request
The provider will answer your request and contact you directly. An important tip: Be sure to compare the prices and quality of the respective companies.
On-site appointment
Are you now convinced by one of the providers and would like to buy a photovoltaic system? Then arrange an on-site appointment so that you can commission the provider.
Installation of the system
You should now start installing the PV system as soon as possible. Make sure that the provider takes care of all registrations so that you don't have to worry about anything else.
Buy a photovoltaic system via the Milk the Sun platform: the world's no. 1 marketplace for photovoltaic systems
If you would like to buy a commercial photovoltaic system, the Milk the Sun photovoltaic marketplace gives you the opportunity to view and buy projects from over 1,700 cooperating developers. Founded back in 2012, the platform for brokering large-scale photovoltaic projects on roofs and open spaces impresses with a total output of over 1.875 gigawatts brokered to date.
This makes Milk the Sun the No. 1marketplace for commercial PV systems worldwide. Here you have an experienced and professional broker at your side to help you if you want to buy a commercial PV system.
Photovoltaic marketplace Milk the Sun - how it works!
When you visit the Milk the Sun marketplace, you will see the following overview. The following functions are also available to make it easier for you to find your desired system:
The search filter allows you to click on the project types that are relevant to you.
You can also choose between open and roof surface as a system type.
You can set the main aspect of the price precisely using a regulator.
As Milk the Sun operates worldwide, you are free to choose your preferred country. However, you can also call up your project via the project ID and hide reserved projects.
Click on the green button below and you will see the projects from the complete range that match your search criteria.
Here are a few examples of the results of a targeted search for the criteria project rights, open space under construction and roof space in operation. In addition to the "New" label, the search results are also displayed as "Reserved".
This is what the offer for a project right with power specification on an open space looks like. No date has yet been set for the grid connection.
Here is a search result for an open space with an imminent start of construction as a turnkey solution with details of the output and the expected grid connection.
This new open-space plant is located in sunny Sicily and will be connected to the grid in spring 2024.
Here is a rooftop system in Marktplatz that has been in operation since 2016. Here you can benefit immediately from the electricity production.
As soon as you have registered on the marketplace, you will receive all the necessary information. Further agreements are processed in a secure data room.
Buying a photovoltaic system as a direct investment - how does it work?
In the following video, Solar Direktinvest explains the advantages of buying a PV system in the form of a solar investment. Trust our partner Milk the Sun when buying your photovoltaic investment!
And even if you own a roof area of at least 1,000 square meters or a plot of land of at least 10,000 square meters, you can lease these areas to Solar Direktinvest at any time. You benefit from an attractive lease payment. Take a look at Rent roof space or also Lease land if you have suitable land available.
Buying a solar system as an investment makes sense because...
- ... you receive a high return of up to 10% p.a. when you buy a commercial solar system
By selling the electricity you produce via direct marketing, you can generate a return of up to 10% per year from electricity sales, depending on the market situation. Full feed-in is particularly recommended if you buy a commercial solar system.
- ... Photovoltaic systems with safe and tested technology convince
Solar technology is neither complicated nor particularly new. However, this is a major advantage, as the technology has now been tried and tested millions of times all over the world and in a wide variety of weather conditions.
- ... you benefit from up to 40 years of passive income when you buy a PV system
Thanks to the technical requirements, photovoltaic systems can now be operated for up to 40 years without major power losses. This means that if you buy a solar system, you can generate profits from the electricity yields for decades.
- ... PV systems receive a minimum state tariff for the first 20 years
The Renewable Energy Sources Act stipulates a minimum remuneration for every kilowatt hour that you feed into the public grid, valid for 20 years after commissioning. This means you can receive more money through direct marketing, but you can be sure of the EEG amount.
- ... you make an important contribution to environmental protection when you buy photovoltaics
The energy required to manufacture the photovoltaic modules and components when you buy a solar power system is offset within just a few years of operation. After that, the solar system is CO2-neutral and therefore climate-neutral.
Your benefits when you invest in a photovoltaic system with Milk the Sun
- Years of experience
Milk the Sun has been working as a marketplace for the realization of large photovoltaic systems since 2012 . We use this experience to your advantage. This makes us a reliable partner that brings supply and demand together globally.
- Large selection
Milk the Sun has made it to No. 1 worldwide as a marketplace for commercial photovoltaic systems. The selection of different PV projects is correspondingly large. There is a suitable project for every investment volume.
- All-round carefree package
We are also there for you after the purchase of your solar system. With service from a single source. We offer you an all-round carefree package for monitoring, maintenance and insurance of the PV system over the entire service life.
Buy a photovoltaic system: Example projects
Below you can see a selection of projects that we have already successfully brokered to investors. These investors were able to buy the respective solar system from Solar Direktinvest via the Milk the Sun marketplace and thus invest in photovoltaics. The buyers now benefit from the many advantages that a photovoltaic investment brings.
Buy PV system in Weisenheim
Power: 230 kWp
Purchase stand-alone PV system
Location: Rhineland-Palatinate
Year of construction: 2021
Buy photovoltaics Mörsdorf
Power: 209 kWp
Existing PV system
Location: Thuringia
Year of construction: 2021
Buy PV system in Tribsees
Power: 155.84 kWp
Buy stand-alone PV system
Location: Mecklenburg-Western Pomerania
Year built: 2019
Buying a photovoltaic system as a direct investment: customer experience at Solar Direktinvest
Buying photovoltaics: In the video below, business psychologist and former managing director of an energy supply company, Mirko Steffen, describes the advantages of buying a photovoltaic system as a direct solar investment. He emphasizes the important role of a reliable brokerage company.
"Four to five years ago, I started investing in renewable energies myself. I have now invested in five photovoltaic plants. [...] We assume that the market has massive growth potential in the future, shaped by the entire political background. Buying a photovoltaic system should actually be an addition to any intelligent portfolio. In other words, we consider investing in a photovoltaic system, in addition to real estate and company investments, to be a very solid long-term building block for the creation of stable assets."
Mirko Steffen
Business psychologist and former managing director of an energy supply company
Buy a photovoltaic system and actively participate in environmental protection
It is time to act. The world agrees on this. But while some are still talking, others are tackling the problem of global warming with determination. It's not that difficult to take action in your own sphere of influence. Be it your own rooftop system or investing in a solar park. Because buying photovoltaics means advancing the energy transition in harmony with environmental protection and sustainability.
A challenge as great as climate change requires powerful measures. Because more really does bring more. And although Germany is the European leader in solar parks and photovoltaic purchases, there is still a lot to be done.
With Milk the Sun, anyone who wants to actively participate in climate protection can make their contribution. And not just nationwide, but worldwide. The marketplace for commercial photovoltaic systems is the world's No. 1, and the output produced by the marketplace is correspondingly high. More than 1875 MW has been generated so far. This has replaced a considerable amount of fossil fuels with green energy.
But even a small contribution by buying photovoltaics counts. Milk the Sun's marketplace offers investments in solar systems for smaller investments as well as a selection of large-scale projects. The time to get active is now. At Milk the Sun, there are always immediately available projects - with profit prospects for investors and the environment.
