Background
#For a solar system in St. Gallen, planning does not end on the roof. What matters is whether grid connection, metering concept, electrical execution, safety verification, meter process and subsidy documents fit together.
Clarifying these points only after installation risks questions, delays or an incomplete handover. The right workflow therefore starts with a technical pre-check and brings roof, electrical work, grid operator and incentives into one project plan.
For your roof
What does a system on your roof cost?
With your address we calculate price range, incentives and payback for your roof from federal data. We email the report straight away.
Free and non-binding · no unsolicited calls
Rather talk directly? +41 78 615 90 58
What matters in the canton of St. Gallen
#The responsible grid operator defines the concrete connection process. In Canton St. Gallen, different grid operators may be responsible depending on the municipality. Registration must therefore not be derived from a generic template; location, grid area, connection capacity, inverter data and the intended metering concept must match the specific grid operator.
The metering concept determines self-consumption, feed-in and expandability. A single-family house with one meter must be planned differently from a multi-family building, commercial property, battery system or installation that may later be combined with wallbox, heat pump, ZEV, vZEV or a local electricity community.
The electrical installation is part of project quality. Inverter location, cable routes, protective devices, earthing, surge protection, labelling, disconnection and documentation must be prepared so acceptance and safety verification are possible without loose interfaces.
Pronovo and guarantees of origin require consistent project data. Incentive and HKN documents should use the same system capacity, location, commissioning logic and technical master data as the grid operator, electrical planning and handover documentation.
The house connection does not limit every project, but it must be checked early. For larger systems, older distribution boards, commercial loads, multiple charging points or planned battery integration, the existing connection and distribution situation may affect design, schedule and cost.
The process in five steps
#Tick off for your project
Clarify location and grid area
record address, municipality, existing house connection, meter numbers, consumption profile and intended system capacity. This determines which grid-operator process and documents are relevant in St. Gallen.
Prepare the technical pre-project
align roof layout, inverter, battery option, cable routing, protection concept, single-line diagram and metering concept before the final quote. This shows whether a standard connection is enough or deeper grid or electrical clarification is needed.
Run grid connection and permit steps in parallel
submit connection request, technical data sheets, any municipal or notification documents and follow-up questions in a coordinated way. The grid operator should not be contacted only after modules are already installed.
Document installation and electrical execution
record roof installation, DC cable routes, inverter, protective devices, labels and relevant photos during the work. This documentation helps with acceptance, later service and questions from the grid operator or owner.
Close commissioning cleanly
review safety verification, measurement and test records, grid-operator release, meter or metering-point clarification, Pronovo/HKN data and handover documents as one package. Only then is the system organisationally complete.
Checked for your roof, not just read up on
What does a system on your roof cost?
With your address we calculate price range, incentives and payback for your roof from federal data. We email the report straight away.
Free and non-binding · no unsolicited calls
Rather talk directly? +41 78 615 90 58
Frequently asked questions
#Sources
#The responsible authorities are decisive. Always verify binding details – amounts, deadlines and conditions – for your specific property against the current status of the respective authority.