The #1 for renewable energy

Your contact for affordable photovoltaic systems in premium quality

Secure high-quality photovoltaic systems at fair prices - over 1,000 satisfied customers already trust in Sonnen-Energie.
Regional master craftsman's business with its own
assembly teams, electricians and
Roofers.
If solar, then solar energy

Personally planned. Professionally realised.

As the market leader in the Oberallgäu region, we do not offer standard solutions, but customised photovoltaic systems that are precisely tailored to your needs and local conditions.

Manufacturer-independent

We select from the best brands on the market so that you get the optimum solution for your budget and your needs. 

Legendary guarantees

Up to 40 years performance guarantee on modules and 25 years roof tightness, thanks to a certified substructure that keeps its promises.

Premium quality

From the modules to the last screw: we rely on hand-picked components and precise workmanship to maximise service life and efficiency.

Customised planning

No off-the-shelf solution: Your system is customised precisely to your roof area, your electricity consumption and your requirements.

Assembly in 6-8 weeks

Without long waiting times: Once the order has been approved, we install your system quickly, cleanly and reliably, usually within a few weeks.

Personalised advice

From the initial idea to the commissioning of your photovoltaic system, your personal contact will guide you through the project step by step.
Our locations

Our offers
for your independence

Simply produce your own energy - with a clever energy concept from Sonnen-Energie, you can take back control of your energy costs.

Photovoltaic systems for private individuals

Never again high electricity costs 

Complete packages from as little as €10,557 - swap your long-term debt with your electricity provider for long-term independence.

Trade & Agriculture

Staying in the black with green electricity

Unutilised roof areas and fields provide effective cost savings with the right solar configuration. 

For landlords & developers

Tenant electricity PV systems without bureaucratic madness

Secure a return of up to €162,000 per apartment block while your tenants make maximum savings. 
Our locations

Quality from the Allgäu that inspires the world

We are expanding because we have understood the needs of our customers. Solid processes and affordable, affordable offers are ....
Head office

Solar Energy Allgäu

Our main site in Sonthofen was founded 7 years ago.
Branch office

Wegberg location

In 2024, we opened another location in beautiful Wegberg.
Branch office

Location Stuttgart

The usual solar energy quality for the Stuttgart region.
Branch office

Bangkok Thailand

Our newest location in the Thai capital Bangkok.
Guarantees and collateral

Our guarantees are beyond the norm

We are expanding because we have understood the needs of our customers. Solid processes and affordable, affordable offers are ....

Assembly guarantee

No need to worry about assembly errors

5-year installation guarantee, so that you can sleep soundly even after we have moved away.

Component guarantee

Up to 40 years product & performance guarantee

All our components come from the premium segment and are guaranteed for up to 40 years!

Roof guarantee

25 years of roof tightness guaranteed for you

Thanks to the European CE-certified AEROCOMPACT substructure including replacement tiles in your roof colour.

Remote maintenance

5 years of remote maintenance as a gift

We monitor your system externally and inform you about possible fluctuations. 
Independent in 4 steps

Your path to a high-end energy solution

With us, everything is non-binding - after your enquiry and consultation, you will receive an energy concept. You will then know exactly how much you can save. 

Step #1

Easy online enquiry

Start conveniently and without obligation: Tell us your key data online - in less than 2 minutes.

Step #2

Needs analysis in a short telephone call

We check your roof, your consumption and your wishes - so that everything fits exactly to your ideas and possible changes in the future.

Step #3

Personal planning & consultation appointment

We will visit you and draw up a customised energy concept tailored to your property. You will also receive a precise profitability calculation and a non-binding offer tailored to your requirements. 

Step #4

Personal planning & consultation appointment

Have you made your decision? Our professionals will reliably install your system on the agreed date. Professionally & quickly. Within one day, your installation is not only installed, but also connected to the grid. 
Location Sonthofen

Mittagstraße 19b, 87527 Sonthofen

Telephone

+49 (0) 8321 788 2593

e-mail

meine@sonnen-energie.de

Answers to your questions

Everything to do with photovoltaics

Usually between 9 and 11 years - depending on your consumption, roof orientation and electricity prices. From this point onwards, your system will produce free electricity.

Depending on the federal state, regional subsidy programmes are available to you. You also benefit from tax advantages, e.g. through VAT exemption for systems under 30 kWp. We will advise you individually.

On average, the investment is approx. 16,000 to 20,000 € - including installation and storage. The exact amount depends on the roof size, orientation and desired output. As a rule, homeowners opt for systems in the 5-25 kWp range. These purchases are also fully exempt from VAT. 

Unused electricity is automatically fed into the public grid - and you will receive a Feed-in tariff according to EEG.

Photovoltaic systems are Virtually maintenance-free. A regular visual inspection is usually sufficient. We recommend a professional inspection every 2-3 years. With us, you also benefit exclusively from 10 years of free remote maintenance. For you, this means that we keep track of the performance of your photovoltaic system. 

Yes, absolutely and that is also recommended. A memory allows you to do this, use more of your own electricity yourself - even in the evening or in bad weather. More self-consumption means higher profitability for you.

After planning, installation is usually carried out within a few weeks. The installation itself usually only takes one to two days. Once you have placed your order, you usually wait 3-6 weeks until the installation date. After that, everything happens very quickly and you are online within a few days. 

For most single-family homes, you do not need authorisation to build a PV system. In exceptional cases (e.g. listed buildings), we will check this for you individually.

News blog

Innovations on the market? We keep you up to date

Photovoltaics of the highest quality

Over 1,000 realised PV systems for homeowners, companies and investors.
🔒 100% free of charge & without obligation
Get a quote & customised planning for your property.

Head office

We would be happy to advise you on site:
Mittagstrasse 19b
87527 Sonthofen

Opening hours: Mon-Fri | 09 am - 5 pm

Current offer

10 kWp PV system
Assembly included

  • 23 Trina modules
  • FoxESS 10 kW storage tank

16.990€

We also cover your electricity costs until the photovoltaic system is installed.