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Solar system design

Plan your solar system properly – before the first panel goes on the roof

Whether a solar system pays off over 25 years is largely decided at the planning stage. We check the roof, the structure and the meter cabinet, size the system to your consumption and clarify the grid connection before you commit.

  • Survey of roof, substructure and meter cabinet
  • Sizing by consumption, load profile and future loads
  • Panel layout with clearances, shading and cable routes
  • Grid connection coordinated with the network operator

Solar calculator

What would a solar system cost you?

Size, price range, savings and payback for your roof – calculated in two minutes with irradiation data for your location. Free and non-binding.

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What planning a solar system involves

It starts with a survey: size, pitch and orientation of the roof areas, condition of the covering, shading from dormers, chimneys or trees, and space in the meter cabinet. Much of this can be assessed from photos and drawings; for larger roofs or open questions we come on site.

The result is the panel layout. It takes edge clearances, wind and snow load zones, roof windows and maintenance paths into account and defines how the panels are wired into strings and which inverter they connect to.

  • Roof areas, covering and shading
  • Load capacity of the structure and mounting system
  • Meter cabinet, cable routes and inverter location
  • Battery, wallbox or heat pump – now or later

Sized to your consumption, not a rule of thumb

Good sizing starts with consumption: how much electricity is used per year, and at what time of day? For a household, the annual bill and plans for an electric car or heat pump are usually enough. For businesses with interval metering, the load profile in 15-minute values shows exactly when power is needed.

On that basis we calculate variants: different system sizes, with and without a battery, east-west or south layouts. You see which option fits your budget and goal before you sign a quote.

Structure, permits and grid connection – clarified early

Rooftop systems on homes rarely need a building permit, but listed buildings, ground-mounted systems and local development plans can require approval first. Hall roofs and ballasted flat-roof systems often need confirmation from a structural engineer. We clarify this before any material is ordered.

We coordinate the grid connection with the local network operator. For small systems this is usually a formality; for larger ones, the operator’s response and any changes to the connection set the timeline. That is why the grid application belongs at the start of planning, not at the end.

Planning and installation from one provider

Because our installation crews build to the plan we drew up ourselves, nothing gets lost between designer and installer. If the roof needs renovating first, we plan that too. For commercial and farm roofs, we also provide planning as a standalone service on request.

How your project runs

  1. 1

    Enquiry

    You describe the building, roof area and goal — via the form or by email.

  2. 2

    Assessment

    We review the roof, structure and access from photos, plans or on site.

  3. 3

    Quote

    You receive a written quote with a clearly defined scope of work.

  4. 4

    Installation

    Our crew installs the substructure, modules and cabling.

  5. 5

    Handover

    Commissioning, photo documentation and a walkthrough of your system.

Frequently asked questions

The questions we are asked most often before a project starts.

What does planning a solar system include?

Planning a solar system includes a survey of the roof, substructure and meter cabinet, sizing based on consumption and load profile, a panel layout with string design and inverter selection, a check of structural and permit requirements, and coordinating the grid connection with the network operator.

Which documents do you need for the planning?

For an initial design, photos of the roof and meter cabinet, the latest annual electricity bill and any floor or roof plans are usually enough. For businesses with interval metering, the load profile of the last twelve months is helpful; the metering operator can provide it.

Do I need a structural survey for my solar system?

On intact tiled roofs of homes a structural survey is usually not required, because panels and mounting add little load. Hall roofs, old or weakened roof structures and ballasted flat-roof systems, however, often need confirmation from a structural engineer. We check this during planning.

Request planning for your solar system

Send us photos of your roof and meter cabinet and your annual consumption. We will get back to you with an initial assessment and a proposal for the next steps.