In Thurgau there is no uniform feed-in tariff – the local utility in your municipality is always responsible. The largest supplier, Thurplus (Frauenfeld), switched from a fixed tariff (previously 13.7 Rp./kWh) to the quarterly SFOE reference market price as of 2026, with the statutory minimum remuneration of 6.0 Rp./kWh for systems under 30 kW. Other municipal utilities run their own models. (As of: July 2026)
Key points in brief
- Thurgau is a patchwork of utilities: Frauenfeld, Kreuzlingen, Arbon, Weinfelden & co. each have their own utilities and their own tariffs.
- Thurplus, the largest utility, switched to the market price model in 2026 – the comfortable fixed tariff of 13.7 Rp. (2025) is history.
- Floor at Thurplus: 6.0 Rp./kWh for systems under 30 kW, 6.2 Rp. for 30–150 kW without self-consumption.
- At Thurplus, the guarantee of origin is not included in the remuneration – it is sold separately via the customer portal.
- The first duty before any profitability calculation: read your own municipal utility's tariff sheet.
Who is actually responsible in Thurgau?
Unlike the Canton of Zurich, where ewz and EKZ dominate as two big players, the Thurgau supply landscape is fragmented: EKT AG supplies many municipalities as an upstream supplier, but the grid to the end customer is operated by local utilities – Thurplus in Frauenfeld, the Technische Betriebe in Kreuzlingen, Arbon, Amriswil, Weinfelden and numerous other municipalities. For your feed-in tariff, only the utility whose grid your house is connected to matters.
This has a practical consequence: two neighbouring municipalities can pay noticeably different remuneration. Anyone calculating a system in Thurgau cannot avoid looking at the local tariff sheet – or having this clarified as part of the quote.
Thurplus: from fixed tariff to the market price model
Thurplus, the utility of the cantonal capital Frauenfeld, exemplifies where things are heading. Until the end of 2025, a fixed rate of 13.7 Rp./kWh applied – a comfortable value by Swiss standards. Since 1 January 2026, the market model applies:
| Component (Thurplus, from 1.1.2026) | Rate |
|---|---|
| Base energy remuneration | SFOE reference market price, published quarterly |
| Minimum remuneration PV < 30 kW | 6.0 Rp./kWh |
| Minimum remuneration PV 30–150 kW with self-consumption | calculated pro rata by capacity |
| Minimum remuneration PV 30–150 kW without self-consumption | 6.2 Rp./kWh |
| PV from 150 kW | pure reference market price, no floor |
| Guarantee of origin (GO) | not included – sold separately via the customer portal |
As of: July 2026, according to Thurplus's publication. Tariffs are adjusted periodically – your utility's current tariff sheet is decisive.
This system change is not a Thurplus solo effort but the implementation of the new energy law, which we observe in exactly the same way at EKZ, Glattwerk and many other utilities: reference market price as the base, statutory minimums as the floor. For producers this means the same thing nationwide – remuneration fluctuates with the market, and the calculation is based on the annual average and, when in doubt, the low-price scenario.
What does the change mean for existing and new systems?
Anyone who calculated their system with 13.7 Rp. needs to adjust their expectations: in weak market quarters remuneration can fall as low as the 6.0 Rp. floor; in strong quarters it lies above it. There's no need to dramatise this – but the consequence is clear: self-consumption becomes more important. Every kilowatt-hour you consume yourself replaces the full purchase price and is therefore worth several times as much as feed-in. The most effective levers for this: optimise self-consumption, from boiler control to a battery.
For new plans in Thurgau, we recommend the same discipline as everywhere in the market price model: draw up the calculation with conservative feed-in remuneration – if it still adds up, every better quarter is a bonus. How this calculation basically works is shown in Is a solar system worth it?.
The guarantee of origin: a separate matter at Thurplus
One detail with real monetary value: Thurplus does not include the GO in the remuneration. The ecological added value can instead be sold separately via the customer portal. That is neither better nor worse than including it – but it requires an active step from the producer. Anyone who skips it gives the added value away for nothing.
As everywhere, the prerequisite is registration and certification of the system with Pronovo – part of the standard registration on ecoEn projects. What GOs basically are and what they earn: Guarantees of origin explained.
And the other Thurgau utilities?
Experience shows the models of the remaining municipal utilities range from simply passing through the reference market price to their own fixed or mixed tariffs; the handling of the GO also differs. A serious complete overview of dozens of utilities would go out of date faster than it could be published – so here is the method instead of false precision:
1. Find the tariff sheet: your utility's website, keyword "feed-in", "Einspeisung" or "Energierücklieferung". 2. Clarify three questions: fixed or market model? GO included or separate? Which floor applies to your system size? 3. Calculate with the annual average, not the best quarter.
Or in short: with an ecoEn quote, clarifying the local tariff is standard – including the question of what this specifically means for battery and self-consumption planning at your location.
The Thurgau patchwork has an underestimated side effect: clients compare their remuneration with that of acquaintances in the neighbouring municipality – and draw the wrong conclusions about their own system from it. But the neighbouring utility's tariff simply says nothing about your own profitability. What counts is the calculation using your own utility's numbers – and thanks to self-consumption, that often turns out better than the bare feed-in tariff would suggest.
Frequently asked questions
What is the feed-in tariff in Thurgau?
There is no uniform cantonal tariff – each municipal utility sets its own model. Thurplus (Frauenfeld) has, since 2026, remunerated the SFOE reference market price with a floor of 6.0 Rp./kWh for systems under 30 kW (as of: July 2026). Your own utility's tariff sheet is decisive.
Why did Thurplus abolish the 13.7 Rp. fixed tariff?
Because of the switch to the market price model under the new energy law – a step many Swiss utilities are currently taking. Remuneration therefore follows the electricity market instead of a politically set rate.
Do I get paid for the guarantee of origin at Thurplus?
Yes, but not automatically: the GO is not included in the remuneration and is sold separately via the customer portal. Without an active step, this added value is forfeited.
Does the 6-centime floor apply everywhere in Thurgau?
The minimum remuneration for systems up to 150 kW is federal law and applies at every grid operator. What is paid beyond that – fixed tariffs, GO surcharges – is decided by each utility itself.
Is a solar system worth it in Thurgau despite the market model?
In many cases, yes – the main lever is self-consumption anyway, not feed-in. What matters is an honest calculation with a conservative remuneration assumption; that is exactly how we calculate in our consultations.
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Sources: Thurplus (electricity feed-in, tariff publication), SFOE (reference market prices under Art. 15 EnFV), Energy Ordinance EnV Art. 12.
Last updated: 9 July 2026 · Author: ecoEn editorial team
