Question 1

What does a commercial PV system cost?

Accepted Answer

Costs depend on system size. As a guideline: 1,000-1,400 €/kWp for systems from 50 kWp. A 100 kWp system costs approximately 100,000-140,000 €. Battery storage costs additionally approx. 800-1,200 €/kWh. Through our direct imports we can offer particularly favorable conditions.

Question 2

How long does the installation of a PV system take?

Accepted Answer

From planning to commissioning typically takes 2-4 months. Pure installation takes about 1-2 weeks for a 100 kWp system. The biggest time factor is usually the approval by the grid operator (4-8 weeks).

Question 3

Do I need a permit for my PV system?

Accepted Answer

Roof-mounted PV systems are permit-free in most cases. However, they must be registered with the grid operator. For listed buildings or larger ground-mounted systems, a building permit may be required. We handle all registrations for you.

Question 4

What is the feed-in tariff for 2026?

Accepted Answer

The EEG compensation is currently approx. 8.1 cents/kWh for systems up to 40 kWp and approx. 7.1 cents/kWh for systems up to 750 kWp. The compensation is guaranteed for 20 years. Important: Self-consumption is significantly more economical than full feed-in.

Question 5

Is battery storage worthwhile for commercial businesses?

Accepted Answer

Yes, especially if you need electricity outside of sunshine hours. A storage system increases self-consumption from typically 60% to 70-80%. With high electricity prices (from 28 cents/kWh) a storage system pays for itself in 10-14 years. Advantage: Independence from electricity price fluctuations.

Question 6

How much electricity does a 100 kWp system produce?

Accepted Answer

In Northern Germany, a 100 kWp system generates approximately 95,000-105,000 kWh per year. This corresponds to the annual consumption of approx. 25-30 households. The exact amount depends on orientation, inclination and shading.

Question 7

Which roof types are suitable for PV systems?

Accepted Answer

In principle all roof types: flat roofs, pitched roofs with tiles, trapezoidal sheet, sandwich panels or Eternit. Flat roofs are particularly well suited, as the modules can be optimally oriented. The statics are important - we check this free of charge.

Question 8

Do I need to maintain the PV system?

Accepted Answer

PV systems are very low-maintenance. An annual visual inspection is recommended and professional maintenance including cleaning every 2-3 years. Inverters should be replaced every 10-15 years. We offer maintenance contracts.

Question 9

Can I lease a PV system instead of buying?

Accepted Answer

Yes, PV leasing models are possible. You pay a monthly lease and the provider remains the owner. Advantage: No investment costs. Disadvantage: No tax benefits, higher total costs. We recommend buying in most cases, possibly with KfW funding.

Question 10

What happens during a power outage?

Accepted Answer

By default, the PV system shuts down during a grid outage (safety regulation). However, with a battery storage and emergency power function, you can continue to use electricity during a power outage. This requires a special emergency power circuit, which we optionally offer.

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