Background
#In 2026, the PV feed-in tariff in Thurgau follows the Swiss Federal Office of Energy (SFOE) quarterly reference market price in the Thurplus grid area.
Thurplus states a minimum remuneration of 6 Rp./kWh for systems below 30 kW; for systems from 30 to below 150 kW with self-consumption, the minimum is degressive and calculated as 180 divided by the system output in kW. This is the standard case for a small system connected to the low-voltage grid. A system on the medium-voltage grid, outside the Thurplus area or above the limits named by Thurplus requires a separate assessment and, where applicable, an individual agreement.
For the economics, feed-in revenue, self-consumption, guarantees of origin and the Pronovo one-time incentive must be calculated separately. The first decisive point is therefore the responsible distribution-grid operator, not just the Canton of Thurgau.
What drives the economics
#Grid area rather than cantonal boundary: the Thurplus rule applies to the Thurplus grid area in Frauenfeld. If the property is served by another distribution-grid operator, its registration, metering and contractual conditions may differ; record the responsible operator before making any tariff assumption.
Price logic from 1 January 2026: the SFOE describes the quarterly reference market price as the harmonised Swiss price under Art. 15 para. 1 EnG when the grid operator and producer do not agree on remuneration. An annual figure from an old Thurplus tariff table is therefore not a reliable 2026 assumption.
Output class: Thurplus states 6 Rp./kWh for systems below 30 kW. For systems from 30 to below 150 kW with self-consumption, the minimum is degressive: 180 divided by the installed output in kW, for example 3 Rp./kWh at 60 kW. Compare the threshold with total installed output, not with expected exported energy.
Voltage level and size: under its published rules, Thurplus remunerates systems in the low-voltage grid; medium-voltage systems require individual agreements. Thurplus also names 3.0 MWp or 5,000 MWh as the limit of the described feed-in route.
Self-consumption before feed-in: Thurplus itself points out that high self-consumption, storage or dynamic load management changes how solar power is allocated. The load profile, heat pump, wallbox and battery must therefore be modelled before comparing the result with the SFOE price.
Keep revenue streams separate: feed-in remuneration is settled per exported kilowatt-hour, while the Pronovo EIV is a separate federal instrument supporting the investment. Thurplus also mentions payment for guarantees of origin as an additional remuneration; these three items must not be merged into one flat solar-yield figure in the quote.
Worked example with assumptions: a hypothetical 12 kWp system producing 11,000 kWh per year uses 35% on site, or 3,850 kWh, and exports 7,150 kWh. Using the 6 Rp./kWh minimum assumption for systems below 30 kW, this gives 7,150 × CHF 0.06 = CHF 429 of feed-in remuneration per year. The value of self-consumption, guarantees of origin, Pronovo EIV, taxes and costs are excluded; the applicable quarterly reference price may be higher.
The process in six steps
#Tick off for your project
Confirm the grid area
before the quote, use the address and grid connection point to establish whether Thurplus or another distribution-grid operator is responsible. For Frauenfeld, Thurplus’s solar feed-in page is the concrete starting point; the canton alone does not answer this question.
Classify the system
record installed output, expected annual production and voltage level. The 30 kW and 150 kW thresholds, together with the 3.0 MWp or 5,000 MWh limits named by Thurplus, determine whether the published standard logic is sufficient or another contractual route is needed.
Prepare metering and registration
register the PV system with the responsible grid operator and clarify the technical connection. Thurplus requires a registered, technically correct system for remuneration and installs suitable metering where necessary.
Calculate self-consumption
compare the load profile, heat pump, wallbox and battery with feed-in. Use the current SFOE reference market price for the exported share; the SFOE publishes it by the 10th working day after the quarter ends, not as a fixed annual figure.
Register funding separately
keep the Pronovo EIV as an investment contribution separate from feed-in remuneration and any guarantees-of-origin payment. The current SFOE funding page refers to Pronovo for registration; show the three cash-flow elements as separate lines in the economic calculation.
Document commissioning
keep the grid registration, metering concept, technical data and actual installed output consistent. For medium voltage or a system outside Thurplus’s standard limits, an individual agreement or written clarification must be in place before execution.
Checked for your roof, not just read up on
Once the framing is clear, a property-specific check with roof, grid and documentation is worthwhile.
Frequently asked questions
#Sources
#The responsible authorities are decisive. Always verify binding details – amounts, deadlines and conditions – for your specific property against the current status of the respective authority.