The big ecoEn tariff comparison covers the grid operators in the Zurich region. For readers outside this region, this page adds two of Switzerland's largest urban grid operators: in 2026, IWB Basel remunerates a constant 14 centimes per kilowatt-hour, EWB Bern at least 10.96 centimes for systems up to 100 kW. (As of September 2026)
Key points in brief
- IWB Basel remunerates a constant 14 Rp./kWh throughout 2026 – a deliberately steady tariff for the whole year.
- EWB Bern remunerates at least 10.96 Rp./kWh including guarantee of origin for systems up to 100 kW.
- Since 1 January 2026, a statutory minimum remuneration has applied nationwide for photovoltaic and hydropower systems up to 150 kW.
- This page is a geographic supplement to the big tariff comparison for the Zurich region, not a replacement for it.
What do IWB Basel and EWB Bern pay in 2026?
| Grid operator | Feed-in tariff 2026 | Distinctive feature |
|---|---|---|
| IWB (Basel) | 14 Rp./kWh, constant year-round | communicated as a contribution to investment security rather than a fluctuating market-price model |
| EWB (Bern) | at least 10.96 Rp./kWh (incl. GO) | applies to systems up to 100 kW |
As of September 2026. Source: press releases from IWB and EWB, as well as industry reporting (energate messenger Schweiz). For comparison: in the Zurich region, values in 2026 ranged from around 6.0 to 9.2 Rp./kWh depending on the grid operator.
Why do some utilities use a fixed price instead of the reference market price?
Since 2026, the federal quarterly fluctuating reference market price has applied nationwide as the statutory standard, backed by a minimum remuneration for smaller systems. Utilities such as IWB and EWB can voluntarily offer a constant tariff independent of this – which creates more planning security, but depending on how the market price develops, can turn out higher or lower than the statutory model in individual cases.
Enquiries from Basel or Bern reach us rather rarely, because our core area is the region of Zurich, Aargau, Zug, Schwyz, Thurgau and Schaffhausen. The first pointer is usually the same: your own grid operator determines the tariff, not the postcode alone.
Frequently asked questions
Why is the IWB tariff higher than many utilities in the Zurich region?
For 2026, IWB deliberately chose a constant tariff independent of the fluctuating reference market price – a business decision by the utility, not a statutory requirement.
Does the statutory minimum remuneration also apply to IWB and EWB?
Yes, the statutory minimum remuneration in force since 1 Jan 2026 for systems up to 150 kW applies nationwide.
Does this page cover all Swiss grid operators?
No. It specifically adds two large urban grid operators outside the Zurich region.
How often do these tariffs change?
That depends on the respective grid operator. The current publication of the responsible utility always applies.
Questions about your feed-in tariff?
Even outside our core area, we advise on questions around feed-in and self-consumption.
Sources: IWB (Industrielle Werke Basel), EWB (Energie Wasser Bern), energate messenger Schweiz.
Last updated: 18 September 2026 · Contact for questions on methodology: ecoEn editorial team
