☀️ Peak sun hours in Switzerland by region
Peak sun hours (PSH) is the number of hours per day the sun delivers 1000 W/m². Switzerland averages about 3.0–3.6 PSH depending on region — the Alpine valleys (Valais, Ticino) are the sunniest, the plateau a little lower. Snow in winter can actually help: panels on steep roofs shed snow fast, and snow reflection boosts production. See our guide on peak sun hours by location.
| Region | Approx. peak sun hours (annual avg) |
|---|---|
| Valais & Ticino (south) | ~3.4 – 3.8 |
| Geneva & the lake region | ~3.2 – 3.4 |
| Zürich & the plateau | ~3.0 – 3.3 |
| Bern & western valleys | ~3.1 – 3.4 |
Use the exact figure for your area in the solar panel calculator and the energy production calculator.
⚡ Electricity tariff and solar support in Switzerland
Swiss household electricity costs roughly CHF 0.20–0.30 per kWh depending on the canton and provider — among the higher prices in Europe. On the support side, most cantons pay a one-time investment subsidy that can cover 10–30% of system cost, and small systems often join KEV/EIV grid-support schemes. Export to the local utility is typically bought at ~CHF 0.05–0.15/kWh, so self-consumption is where the money is — a battery makes real sense here. Estimate your saving with the solar bill savings calculator.
💡 Why solar works in the mountains
High prices plus cantonal subsidies bring payback down to roughly 8–14 years — longer than sunny Jordan, but well within a panel's 25+ year life, and rising retail prices shorten it further. Rooftop space is abundant in Swiss towns, and cool temperatures keep panels efficient in summer heat. Cool climates like Switzerland's actually raise panel output a few percent versus hot deserts. Read our guide on solar panels in hot vs cool climates for the physics.
💰 System cost & payback in Switzerland
As a rough planning guide (verify with local quotes — prices move):
| System size | Approx. installed cost | Suits |
|---|---|---|
| 3 kW | ~CHF 7,000 – 10,000 | Small home, low usage |
| 5 kW | ~CHF 11,000 – 15,000 | Typical family home |
| 10 kW | ~CHF 20,000 – 26,000 | Large home / small business |
With cantonal subsidies deducted, effective payback commonly lands around 8–14 years — then the system produces essentially free energy for the remaining decade-plus of its life. Work out your own numbers with the ROI calculator and size the array with the panel calculator — or design the whole system at once with the system report builder.
🛠️ Field note
Switzerland shows how subsidies change the economics. On paper the sun is modest and labour costs are high, but once the cantonal subsidy is deducted, a 5 kW system in Valais can pay back near the 8-year mark. Two practical tips from the market: apply for the subsidy before ordering anything (retroactive claims are usually not allowed), and favour self-consumption with a battery — the export tariff pays a fraction of what avoiding a purchase costs.
🧰 Solar tools for Switzerland
Plan your Switzerland system with these:
- Solar panel calculator — how many panels for your usage and sun hours.
- Solar bill savings calculator — how much you'll cut off the block tariff.
- ROI calculator — payback period in dinars.
- Battery calculator — if you want backup for outages.
- Full system report — design the whole system in one page.
Related reading: how many panels to run a house, grid-tied vs off-grid vs hybrid, and solar panels in hot climates.
❓ Frequently asked questions
Is solar worth it in Switzerland with high installation costs?
Yes for most homes — after cantonal subsidies, payback lands around 8–14 years against a 25+ year panel life, and rising electricity prices shorten that over time.
How does net metering work in Switzerland?
Switzerland does not use classic net metering. You feed in at ~CHF 0.05–0.15/kWh and buy at CHF 0.20–0.30, so the system is sized for self-consumption. A battery meaningfully improves the economics.
Are there subsidies for rooftop solar?
Yes — most cantons pay a one-time investment subsidy (roughly 10–30% of cost) and small systems can join federal KEV/EIV support schemes. Apply before installing; retroactive claims are generally not accepted.
How much does a 5kW system cost in Switzerland?
Roughly CHF 11,000–15,000 installed before subsidies; after the cantonal subsidy the effective cost can drop by 10–30%. Get local quotes — prices vary a lot by canton and roof.
Note: tariffs, net-billing rules and prices in Switzerland change over time. The figures here are approximate, for planning only — always verify with your utility and local installers.