A useful quotation separates usable capacity, power, installation, warranty and electricity actually shifted to the evening. Check the site data and official sources before signing.
Decision to make
A useful quotation separates usable capacity, power, installation, warranty and electricity actually shifted to the evening. Adapt this decision to the building, your actual consumption and the project schedule.
For this project, start by identifying the grid operator, applicable tariff and site constraints. The quotation must specify the conditions affecting connection, metering or the value of surplus electricity.
Practical effects of the project
- A 5, 10 or 15 kWh battery is not only compared on its nominal capacity: ask for the useful capacity, the charge and discharge power and the round trip efficiency.
- The price must isolate battery, hybrid inverter or AC conversion, protections, cabling, labor, commissioning, monitoring and possible adaptation of the panel.
- A larger battery is not automatically more cost-effective. The calculation must be based on evening and night consumption, losses and kWh actually displaced.
- The guarantee must specify duration, cumulative energy, residual capacity, temperature conditions, cycles, intervention and availability of parts in Switzerland.
- Compare at least three variants on the same production: solar without battery, installation ready for later and battery installed now.
These points help assess the topic ‘ Price of a solar battery in Switzerland: read a quote from 5, 10 or 15 kWh ’ without turning a national average into a local promise. Every decisive figure needs its source, date and scope.
Specific controls
- Useful capacity and continuous power written in the quote.
- Separate prices for equipment, installation, protection, switchboard, EMS, emergency and connection.
- Simulation with real consumption, losses, possible replacement and scenario without battery.
- Manufacturer's warranty, after-sales service manager and access to performance data.
The answers should appear in the quote or in a dated appendix. A verbal explanation is insufficient if it changes the price, expected output, financial support or a contractual obligation.
Compare quotes
- Tariffs: state the purchase price, surplus remuneration and fixed charges applicable to the site, with their source and date.
- Production: provide a monthly estimate with orientation, shading, losses and weather assumptions.
- Investment: separate material, installation, safety, scaffolding, connection, procedures and options.
- Aids: distinguish confirmed amount, estimate and deposit liability.
- Contract: specify guarantees, calendar, deposit, exclusions, maintenance and after-sales service.
A useful quotation separates usable capacity, power, installation, warranty and electricity actually shifted to the evening. In the comparison table, keep one column for the stated value, one for the evidence provided, and one for the effect of a less favorable hypothesis.
Cautious scenario
Test the project with slightly lower production, an unconfirmed grant and less favourable surplus remuneration. This scenario shows whether the decision remains sound based on self-consumption, roof quality and a controlled installed cost.
The main references used are Swissolar - Swiss Solar Monitor, ElCom - Slight drop in electricity prices in 2026, SFOE - support for photovoltaic installations, Pronovo - Submit a photovoltaic subsidy application. They frame the method, but the local amounts and contractual conditions must be rechecked at the time the offer is signed.
Risks to be managed
Compare at least three variants on the same production: solar without battery, installation ready for later and battery installed now. Ask who assumes this risk, what proof will be provided and how a change is handled after ordering.
A more expensive solution should meet a specific need in your project. Ask for a documented benefit and a separate price for each option.
Next step
Gather the address, annual consumption, future electricity uses and building documents. Then check the grid operator's conditions, available grants and site constraints; request quotations covering the same scope.
A useful quotation separates usable capacity, power, installation, warranty and electricity actually shifted to the evening. You can then decide with a documented net price, clear responsibilities and assumptions that each company can explain line by line.
Points to check
- Tariffs: Compare the tariff for your address with the Swiss ElCom median for 2026, keeping local prices separate from the national benchmark.
- Grants: Check the programme, eligibility, documents and deadlines with Pronovo, the canton or municipality. Include only confirmed contributions in your budget.
- Roof potential: Sonnendach is presented as a public pre-diagnosis, to be validated by a technical visit.
- ROI: the method separates self-consumption, injection, installed price, taxation and payment schedule.
- A 5, 10 or 15 kWh battery is not only compared on its nominal capacity: ask for the useful capacity, the charge and discharge power and the round trip efficiency.
- The price must isolate battery, hybrid inverter or AC conversion, protections, cabling, labor, commissioning, monitoring and possible adaptation of the panel.