Your roof: Marly
For a detached house, check roof condition, shading and electrical capacity before signing. A single owner’s decision still requires a technical roof survey.
In all cases, the useful surface area is almost always less than the gross surface area announced. Skylights, chimneys, setbacks, shading and future maintenance needs must be integrated before talking about final power.
Use the building’s hourly consumption to size the project. Record who installs, inspects and supports each part of the system in the contract.
Exposure and access: Marly
Request a survey of nearby shading and the horizon, with monthly generation estimates. Compare options for your building using the same weather data and loss assumptions.
Prepare a timetable showing procedures, approvals and work in their actual sequence. Request a schedule that accounts for weather, access and team availability.
Full cost and grants: Marly
The displayed scenario uses an indicative installed cost for 8 kWp. A quote must specify equipment, roofing and electrical work, connection, inspections and fees before deducting confirmed grants.
Programmes depend on the municipality and available funds. Obtain written confirmation of amounts, timing, limits and combined support for your address before including them in the budget.
Request plans, equipment references and service boundaries before accepting a price. Price the necessary electrical distribution board changes and protection devices.
Output must be assessed for the actual roof, its orientation, shading and condition. Tariffs depend on the grid, product and contract; a cantonal average does not replace your bill.
Building procedures: Marly
Specify access, lifting equipment and protection of the work area. Confirm the supporting structure, anchor points and mounting design.
A serious estimate specifies who prepares the announcement, who manages the connection, who follows the administrative back and forth and how any comments are absorbed into the planning.
In Fribourg, photovoltaics go through Pronovo; cantonal aid mainly concerns solar thermal, renovation or the Buildings Program. Verify any local support before including it in the budget.
Check building protection and appearance requirements with the relevant authority. Include the constraints identified during the survey in the quotation.
