Your roof: Aigle
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.
Request the weather assumptions, losses and monthly results behind the stated output. Distinguish avoided purchase costs from the tariff paid for exported surplus.
Exposure and access: Aigle
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.
Use the building’s hourly consumption to size the project. Keep the simulation assumptions so results can be compared after commissioning.
Full cost and grants: Aigle
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.
Prepare a timetable showing procedures, approvals and work in their actual sequence. Identify the service contact and stated response times after commissioning.
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: Aigle
Assess shifting compatible loads to solar hours before adding storage. Record amounts, deadlines and revision terms in the offer.
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 the canton of Vaud, distinguish between Pronovo, municipal aid and Buildings Program if solar accompanies a renovation. If this timeline is poorly managed, you lose time and sometimes value on aids.
Request plans, equipment references and service boundaries before accepting a price. Confirm voltages, currents and module compatibility with the selected inverter.
