Your roof: Tavel
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.
Check the simultaneous consumption used to estimate avoided electricity purchases. Confirm voltages, currents and module compatibility with the selected inverter.
Exposure and access: Tavel
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.
Request a technical site survey before relying on a sales estimate. Request a schedule that accounts for weather, access and team availability.
Full cost and grants: Tavel
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.
Reserve space and access for inspections and future replacements. 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: Tavel
Compare quotation items for the same scope of work and supply. 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.
Request the weather assumptions, losses and monthly results behind the stated output. Include the constraints identified during the survey in the quotation.
