Regional, personal, competent
+ 1,000 customers

Affordable premium photovoltaic systems for private & commercial customers

Get a free quote, solar planning & profitability check for your property now. Then you'll know exactly whether it's worth it.
Regional master craftsman's business with its own
assembly teams, electricians and
Roofers.
100% Premium without manufacturer commitment - With us you get what suits your needs. What we promise: Only top components on offer!
If solar, then solar energy

Personally planned. Professionally realised.

As the market leader in the Oberallgäu region, we do not offer standard solutions, but genuine system planning tailored to your needs. 

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 3-6 weeks

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

Personalised advice

From the initial idea to commissioning, your personal contact will guide you through the project step by step.
Why think about it?

Clear advantages with a photovoltaic system

Photovoltaics is the guaranteed way to almost €0 electricity costs and long-term independence.

Advantage #1

Never again high electricity costs

Our customers achieve demonstrable ø80% electricity cost savings thanks to our customised planning.  

Advantage #2

Increase in the value of your property

According to the German Real Estate Association (IVD), the value of a property increases by ø 6.7%. What this means should quickly become clear. 

Advantage #3

Dynamic electricity tariff

Our energy management system optimises the self-consumption of PV electricity and sells electricity when it is particularly lucrative. 

Advantage #4

Fast amortisation time

With modern energy management systems, you benefit from amortisation periods of between 6-12 years.
Our customer testimonials

Over 1,000 realised projects and millions of euros in savings

We don't do things by halves - our PV systems are customised for your property and designed for maximum savings. 
5 stars

Wolfgang from Blaichach

Wolfgang only has €5 in electricity costs per month. He uses this to charge his electric cars, heat his hot water and will soon replace his heating with a heat pump that runs on the PV system. 

20 kWp

PV system

20 kWh

Memory

97%

Savings

5 stars

Korbinian from Tyrol

Certainly an above-average system, but Korbinian not only saves 100% but also earns money with his PV system. Despite electric vehicles and a heat pump. 

25 kWp

PV system

20 kWh

Memory

100%

Savings

5 stars

Holger from Schliersee

Holger saves ø80% on his electricity bill. He also uses his PV electricity to keep his electric car fuelled up every day and to supply hot water.

11.5 kWp

PV system

10 kWh

Memory

80%

Savings

Our offer 

We realise PV systems in all sizes

From private homes and apartment blocks to large-scale commercial or agricultural projects.
Private households

PV systems for your independent home

Including installation, storage, inverter and full-black PV modules. Without hidden costs.
Commercial customers

Staying in the black with green electricity

Including installation, storage, inverter and full-black PV modules. Without hidden costs.
Agriculture

Use your space for economic success

Including installation, storage, inverter and full-black PV modules. Without hidden costs.
Sample calculation

Your investment pays for itself - and sooner than you think.

With an amortisation period of just 9 to 11 years, you gain long-term cost savings and planning security.
  • Full control - independent of the market
  • Increase in the value of your property by ø6.7%
  • Long-term financial relief and permanently stable electricity prices.

Investment:

16.957€

Savings/year:

until

1.575€

Amortisation:

9-11 years

10 kWp premium 
PV system

Grid power & PV power 

35 ct/kWh

0 ct/kWh

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. 
Independent in 4 steps

Secure your appointment now

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. 
Location Sonthofen

Mittagstraße 19b, 87527 Sonthofen

Please feel free to visit us during our opening hours. Monday to Friday 09:00 - 17:00
Telephone

+49 (0) 8321 788 2593

Want to speak to us directly? Just give us a call and we'll put you through to the right consultant.
e-mail

meine@sonnen-energie.de

You can also reach us in the classic way with a nice message by e-mail.
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.

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.