Solar PV system in Neuss – planning, installation and storage

What a solar PV system includes

A PV system is more than the modules on the roof. The modules produce direct current, which the inverter converts into the alternating current used in the grid. From there the cable runs to the meter cabinet, where the system is connected to the house network with the necessary protective devices. How safely and economically the system runs is therefore decided not only on the roof but also in the service room.

Our work covers planning and sizing, installing the modules, inverter and cables, adapting the meter cabinet and commissioning with measurements and a test report. On request we add battery storage and an energy management system that controls loads in the house according to solar output.

What matters in planning

Planning a PV system starts with the roof. A south-facing surface gives the highest output around midday; an east-west layout spreads generation over the day and often suits a household that uses a lot of power in the morning and evening better. Shade from dormers, chimneys or trees can noticeably reduce the output of individual modules, so it is taken into account when laying out the modules.

Consumption matters at least as much. Anyone planning a wallbox or heat pump needs a larger system today than the current electricity bill suggests. The meter cabinet is part of the planning too: whether there is room for protective devices and meters or whether it needs adapting is clarified at the on-site visit.

From enquiry to commissioning

For a first assessment we need your annual electricity use from your last bill and, if possible, photos of the roof and meter cabinet. At the on-site visit we check the roof, orientation, shading, cable route and meter cabinet.

This leads to a plan with system size, components and storage if needed, matched to your demand, and a quote. After installing the modules, inverter, cables and protective devices, we put the system into operation, measure it, create a test report and show you how to follow generation and consumption in the monitoring.

Registration with the grid operator and the Market Master Data Register

A PV system must be reported to the grid operator before it is built (§ 19(3) NAV) and entered in the Federal Network Agency's Market Master Data Register (Marktstammdatenregister) within one month of commissioning. The entry is the operator's responsibility; a battery storage system is registered separately.

According to the consumer advice centre (Verbraucherzentrale), missing the deadline risks the feed-in tariff and a fine. We clarify which documents the grid operator requires during planning.

VAT: 0 % for systems on residential buildings

Since 2023, PV systems on or near residential buildings are subject to a VAT rate of 0 %. Under § 12(3) UStG this covers the supply of solar modules, the components essential for operation and storage to the operator, as well as the installation. If the gross output entered in the Market Master Data Register is no more than 30 kW (peak), the conditions are deemed to be met.

For individual tax questions, for example on income tax, please consult your tax adviser.

Using your own solar power: storage, wallbox and energy management

The more solar power is used in your own home, the less electricity has to be bought from the grid. Several building blocks help, and they can also be added later:

Not every building block has to be there from the start. If you build only the PV system first, cable routes and the meter cabinet can be prepared so that storage or a wallbox can be added later without major rework.

After commissioning: operation and checks

A PV system needs little maintenance, but it should be kept an eye on. The inverter's monitoring shows how much the system produces; if output suddenly drops in similar weather or the inverter reports a fault, that is a reason to have it checked. Typical causes are a failed string, a loose connector or new shading, for example from a tree that has grown.

In commercially used buildings, the PV system is part of the business's electrical installation and is included in the recurring electrical testing. In a private house, a check also makes sense if the system behaves unusually after a storm, hail or work on the roof.

Solar PV from your electrician in Neuss and the surrounding area

We plan and install PV systems in Neuss, on detached houses in Norf, Holzheim or Uedesheim as well as on apartment buildings and commercial roofs in the city. We also work on your PV system in Kaarst, Meerbusch, Dormagen, Grevenbroich and Korschenbroich as well as in Düsseldorf, Duisburg and Cologne.

For a first assessment, your annual electricity use and a few photos of the roof and meter cabinet are enough.

You can find every place we work in on our service area page.