Cologny • Geneva

Solar panels: Cologny, Geneva Plan your project 2026

Your solar project: Cologny. Show chimneys, roof windows and other obstacles on the installation layout. Identify the service contact and stated response times after commissioning. Simulate generation and available surplus before choosing a battery. Include maintenance, insurance and foreseeable replacements in lifetime cost.

Verify the grid operatorCompare detailed quotesScenario: 8 kWp

Roof potential

To assess

Purchase — calculation hypothesis

CHF 0.260/kWh

Net cost — model

CHF 16'960

Payback — model

11-15 years

The 8 kWp scenario above uses the cantonal model assumptions: indicative output, 40 % self-consumption, hypothetical purchase and export tariffs, installed costs of CHF 2 200 to 2 800/kWp and assumed Pronovo support of CHF 360 to 400/kWp. It is not a local quote. Recalculate using your roof, hourly demand, contracts and confirmed grants; include fees, losses and replacements.

Your roof: Cologny

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.

Assess shifting compatible loads to solar hours before adding storage. Check how equipment can be accessed and components replaced without damaging the roof covering.

Exposure and access: Cologny

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.

Specify access, lifting equipment and protection of the work area. Specify fall protection and access for installation and maintenance.

Full cost and grants: Cologny

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.

Show chimneys, roof windows and other obstacles on the installation layout. Agree on tests, inspections and documents to be provided at handover.

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: Cologny

Request the weather assumptions, losses and monthly results behind the stated output. Specify fall protection and access for installation and maintenance.

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.

Define included and excluded work during the technical survey. Compare mounting and removal arrangements against the condition of the roof covering.

Compare installers: Cologny

When comparing installers, check an analysis of your electricity consumption throughout the day. Then check the local electricity purchase and feed-in tariffs. These details matter more than the advertised price alone.

The quality gaps are quickly seen in the annexes: level of technical inspection, self-consumption assumptions, electrical diagram, service after commissioning and clarity of service limits.

Before choosing an installer, ask who attends the site after a fault, the travel charges and stated response time. A registered office address does not establish service availability for your building.

Measure usable roof area with obstacles and required clearances included. Record amounts, deadlines and revision terms in the offer.

Places cited on this page — confirm service coverage

Cologny

Frequently asked questions: Cologny

Prepare these questions about the roof, costs, storage and procedures before comparing offers.

What should I check during the roof survey?

Prepare a timetable showing procedures, approvals and work in their actual sequence. Keep the simulation assumptions so results can be compared after commissioning.

How should I compare self-consumption and exports?

Compare avoided purchase costs and surplus export prices with your hourly demand. Self-consumption reduces purchases when generation is used on site; the choice also depends on full cost and losses.

How should I assess adding a battery?

First compare an option without storage for the same demand. Check building protection and appearance requirements with the relevant authority. Confirm voltages, currents and module compatibility with the selected inverter.

Which procedures should I confirm for this building?

The procedure depends on the plot, building and integration. Present the plan to the municipality to confirm notification or permit requirements and any protection constraints before ordering.

What should I request from installers?

When comparing installers, check a clear allocation of responsibilities with subcontractors. Then check the necessary changes to the electrical distribution board. These details matter more than the advertised price alone.

Guides to nearby towns

Geneva Collonge-Bellerive

Prepare your solar project: Cologny

Compare detailed offers, check the construction method and lock in the right order between roofing, quotes and procedures.

Get serious offers Read the quote guide