Your roof: Chêne-Bourg
For an apartment building or condominium, clarify roof rights, owner consent and access. Include cable routes, protection and maintenance in the same plan.
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 plans, equipment references and service boundaries before accepting a price. Distinguish avoided purchase costs from the tariff paid for exported surplus.
Exposure and access: Chêne-Bourg
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.
Check building protection and appearance requirements with the relevant authority. Keep the simulation assumptions so results can be compared after commissioning.
Full cost and grants: Chêne-Bourg
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.
Compare quotation items for the same scope of work and supply. 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: Chêne-Bourg
Define included and excluded work during the technical survey. 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 Geneva, check Pronovo, the SIG 2026 solar premium and municipal aid before signing. If the timeline is poorly managed, you lose time and sometimes value on helpers.
Specify the work assigned to subcontractors and who is responsible for each task. Confirm voltages, currents and module compatibility with the selected inverter.