Your roof: Saxon
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.
Simulate generation and available surplus before choosing a battery. Price the necessary electrical distribution board changes and protection devices.
Exposure and access: Saxon
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.
Assess shifting compatible loads to solar hours before adding storage. Include maintenance, insurance and foreseeable replacements in lifetime cost.
Full cost and grants: Saxon
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.
Specify access, lifting equipment and protection of the work area. Check how equipment can be accessed and components replaced without damaging the roof covering.
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: Saxon
Reserve space and access for inspections and future replacements. Include the constraints identified during the survey in the quotation.
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 Valais, residential photovoltaics first go through Pronovo; Any municipal aid or other energy measures must be confirmed before signature.
Show chimneys, roof windows and other obstacles on the installation layout. Specify fall protection and access for installation and maintenance.
