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COMPLETE PV SYSTEMS · OPTIONAL STORAGE

Solar panels Thurgau: cost, incentives and installation

Since 1 November 2026, you notify a sufficiently adapted solar system in Thurgau to the municipality at least 30 days before work starts; if no objection comes within 30 days, you may build. Pronovo pays a one-time CHF 360 per kW for a typical home system. The canton adds a bonus if the system comes with subsidised insulation or a new ground-source heat pump.

New since 1 November 2026: notify the municipality, build after 30 days without objection

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Solar in Thurgau

Four checks before your quote.

Roof, municipality, grid and funding: the key decisions at a glance.

Explore details & sources

  1. Notification & permits

    New notification procedure in the building act; up to 35 m² in the building zone no procedure at all, heritage buildings always need a permit.

  2. Funding

    Cantonal bonus on insulation with PV; 2026 battery grant used up, waiting list.

  3. Grid & tariff

    Remuneration depends on the local utility; Thurplus in Frauenfeld pays at least 6 cents in 2026.

  4. New builds & taxes

    New buildings generate at least 30 W per m² themselves; deduction only on existing buildings, not within five years of a new build.

Explore as needed

Planning details & sources.

01Notification & permits

Notification since 1 November 2026: 30 days to the start of work

Since 1 November 2026, the notification procedure is part of the Thurgau planning and building act (§ 107a PBG). Sufficiently adapted solar systems on roofs and facades must be notified (§ 55a PBV): the notification goes to the municipality with the necessary documents at least 30 days before work starts, and the system may be built if the authority does not request a permit procedure in writing within 30 days. Older forms still state 20 days; the law now applies. Small systems up to 35 m² in the building zone need neither a permit nor a notification (§ 99 PBG). On cultural and natural monuments of cantonal or national importance, every solar system needs a building permit.

02Funding

Funding: Pronovo for the system, the canton for insulation and batteries

For the solar system itself, the Thurgau funding programme refers to the federal one-time payment: Pronovo pays a one-time CHF 360 per kW for a mounted system under 30 kW and CHF 400 for an integrated one. The canton funds roof and facade insulation with CHF 40 per m² and adds CHF 20 per m² of insulation if a solar system with at least 30 W per m² of energy reference area is installed on the subsidised area, up to CHF 50,000. If you replace an oil, gas or electric heating system in a single or two-family home with a ground-source or groundwater heat pump and install at least 30 W per m² at the same time, CHF 3,000 is added; the two bonuses cannot be combined. For batteries from 10 kWh, the canton pays CHF 1,000, at most 25 percent of the investment; the application must be filed before installation. The quota of 700 applications for 2026 has been reached; new applications go on a waiting list and would be approved in 2027 if the programme continues.

03Grid & tariff

Grid operator and feed-in tariff

How much your exported power is worth is set by the local utility, and Thurgau has many of them. In Frauenfeld, Thurplus pays at least 6.0 cents per kWh in 2026 for systems under 30 kW; from 30 to under 150 kW with self-consumption, the minimum falls with size (180 divided by the capacity in kW). If you want to market the surplus differently, the cantonal funding programme lists contacts such as the Solarstrom-Pool Thurgau. Because self-consumed power saves the full purchase price, we calculate the system with the electricity price at your address.

04New builds & taxes

New buildings and taxes

New buildings in Thurgau need a system delivering at least 30 W per m² of energy reference area (§ 42e ENV), three times what the cantons’ model regulations provide. A 180 m² single-family home therefore needs 5.4 kW. Installing less requires a further reduction in energy demand for heating and hot water (§ 42f ENV). For tax purposes, a solar system on an existing building is deductible as an energy-saving measure, reduced by subsidies. If it is built with the new building or within five years after it, it counts as construction cost with no deduction. Income from exported power is taxable; for systems with self-consumption only the amount exceeding the cost of purchased power.

For the initial roof check

What to have ready.

  • Check area and protection status: up to 35 m² in the building zone without a procedure, heritage buildings always need a permit.
  • File the notification with documents at the municipality at least 30 days before work starts.
  • If you plan roof or facade insulation, apply to the canton together with the solar system so the CHF 20 per m² bonus applies.
  • For a battery, file the application before installation, even if it goes on the 2026 waiting list.

Quick answers

Solar questions in Thurgau.

How much does a solar system cost in Thurgau?

In the Swiss market comparison, a 5–10 kWp rooftop system costs around CHF 14,500–23,300 including VAT, before incentives and without a battery (SFOE price survey 2025). Pronovo pays a one-time CHF 360 per kW for a mounted system under 30 kW. The canton pays nothing for the system alone; a bonus comes with subsidised insulation or a new ground-source heat pump. The actual price depends on an assessment of the roof, access and electrical installation.

Do I need a building permit for solar in Thurgau?

Usually not. Since 1 November 2026, you notify sufficiently adapted systems on the roof or facade to the municipality at least 30 days before work starts; if it does not request a permit procedure within 30 days, you may build. Systems up to 35 m² in the building zone are fully exempt; heritage buildings always need a permit.

Is there funding for a battery in Thurgau?

Yes, CHF 1,000 per battery from 10 kWh usable capacity, at most 25 percent of the investment, with an application before installation. The 700 places for 2026 are taken; new applications go on a waiting list and would be approved in 2027 if the canton continues the programme. You may install beforehand; the filing date remains decisive.

How large must the solar system be on a new build in Thurgau?

At least 30 W per m² of energy reference area, so 5.4 kW for 180 m². Anyone who generates less or no power must further reduce the energy demand for heating, hot water, cooling and ventilation: by 5 kWh per m² and year at 15 to under 30 W, by 10 kWh below 15 W.

Can I deduct the solar system from taxes in Thurgau?

On an existing building, yes, as an energy-saving measure minus subsidies. For a new building and up to five years after its completion, the tax administration treats the system as non-deductible construction cost.

Official figures · Canton of Thurgau

Solar in the Canton of Thurgau: installed base, potential and electricity price 2027

Totals across all 80 municipalities from federal datasets — with source and date below. Figures for your municipality are on its own page.

Solar systems in the federal register
17,137
512.6 MW capacity, 2,226 since January 2025
Solar capacity per resident
1,712 W
across all 80 municipalities of the canton
Roof potential per year
2,819 GWh
3,666 GWh including façades
Grid operators in the canton
81
2027 price without fixed fees: 18.8 to 33.1 ct/kWh

  1. Self-consumption

    What a self-consumed kWh is worth in the Canton of Thurgau

    Excluding fixed and metering fees, a purchased kWh on the standard tariff costs between 18.80 ct in Horn and 33.10 ct in Bischofszell in 2027 (cheapest provider in each municipality). That is roughly what every kWh of solar power saves when it is used in the house instead of being exported.

    Exported power is paid at the quarterly reference market price; since 2026, systems below 30 kW receive a minimum of 6 ct/kWh. How well a system pays off therefore depends on the grid operator at your address, not on a cantonal average. The largest grid operators in the Canton of Thurgau:

    2027 electricity prices of the largest grid operators
    Grid operatorMunicipalitiesct/kWh 2027
    Thurplus120.9
    Energie Kreuzlingen, Stadt Kreuzlingen122.6
    Arbon Energie AG122.4
    Genossenschaft EW Romanshorn319.8–20.2
    Regio Energie Amriswil (REA)223.4–23.6
    Technische Betriebe Weinfelden AG124.1
    Technische Gemeindebetriebe Bischofszell433.1
    EW Sirnach AG123.5

  2. Winter power

    How much solar power in the Canton of Thurgau comes in winter

    Suitable roofs in the Canton of Thurgau could produce 2,819 GWh of solar power per year; weighted by potential, 27% of it comes between October and March. The winter share is highest in Berg (TG) (29%) and lowest in Berlingen (25%).

    For a house with a heat pump, this winter share is what matters: demand is highest in winter and self-consumption is most valuable. Whether a flatter or steeper layout pays off only becomes clear when your roof is assessed.

  3. Growth

    How fast Thurgau is adding solar

    Since January 2025, 2,226 systems with 69.9 MW have been added to the federal register. Per resident, the canton stands at 1,712 watts; among municipalities with at least 1,000 residents, the figure is highest in Amlikon-Bissegg (5,485 W), Affeltrangen (3,920 W) and Hefenhofen (3,481 W).

    The register covers all systems above 30 kVA, subsidised systems and voluntarily registered small systems (as of 2026-09-14); new systems often appear with a delay.

Electricity prices: ElCom, category H4 (household, 4,500 kWh per year), standard product, 2027, energy prices without fixed and metering fees. Sources: SFOE, electricity production plants (as of 2026-09-14) · SFOE, solar potential of municipalities · ElCom, electricity prices 2027 · Energy Ordinance, Art. 12

Figures with sources

What does a solar system cost in Thurgau?

Here is the guide price, with its source. What a system on your roof earns, we calculate for you in about 2 minutes.

Guide price, single-family home

5–10 kWp rooftop · incl. 8.1% VAT

CHF 14,500–23,300

Federal one-off paymentCHF 360 per kW of module capacityEnFV
−CHF 1,800–3,600
After incentive
CHF 12,700–19,700

Reference curve of the SFOE price survey 2025. A market comparison, not a quote; without battery, roof renovation and meter cabinet. BFE 2025

Your detailed report

What your system earns, we calculate for your roof.

From your address, roof and consumption, with the incentives of your canton. We send the report by email straight away.

  • Benefit per yearin the report
  • Amortisationin the report
  • Total incentivesin the reportPronovo · canton · tax
  • CO₂ per yearin the report

Free and non-binding · no sharing with third parties · no unsolicited calls

Calculation, size and storage in detail

  1. Costs

    What a system costs

    Example: 5–10 kWp rooftop PV: CHF 14,500–23,300. Incl. 8.1% VAT, before incentives and tax deductions, without a battery. Calculated with the reference curve of the SFOE price survey (CHF 1,628 per kW plus CHF 5,278): the range reflects different system sizes. A market comparison, not a quote.

    Roof renovation, structural reinforcement and replacement of the meter cabinet are not included. Roof access, electrical work and planning can change the price. Your specific quote follows the property assessment.

    Costs with calculation and sources

  2. Sizing

    Single-family home: the realistic size

    A typical household using around 4,000 kWh per year needs roughly 25 m² of module area (Swissolar, February 2024). As a starting figure, global irradiation in Canton Thurgau is 1,184 kWh/m² per year (MeteoSwiss, Aadorf/Tänikon station, 1991 to 2020 average). Whether that works on your roof in Thurgau depends on orientation, pitch and shading — not on the floor plan.

    Two federal bonuses explicitly do not apply to a single-family home: the winter electricity bonus requires at least 100 kW, and the tilt bonus at least 75 degrees of pitch. Neither applies to an ordinary pitched roof. Counting on them makes the business case look better than it is.

    Clarify notification and permission before installation

  3. Storage

    Battery storage and self-consumption

    Battery storage earns its money through self-consumption. Electricity you use yourself saves not only the energy price but also grid fees and levies — which is why it is worth more than exported electricity. That is what decides whether a battery pays off.

    Since 1 January 2025, an association for self-consumption (ZEV) may also use the existing connection lines. This makes apartment buildings and neighbourhood setups considerably cheaper, as no dedicated line is required. The grid operator depends on the municipality; in the Canton of Thurgau they include Thurplus.

    When battery storage makes sense

Sources: SFOE price survey 2025 · 03 Aug 2026 · FTA: VAT rates · Swiss Federal Office of Energy, factsheet on PV promotion (PDF) · Pronovo, one-time payment for PV · Swissolar, photovoltaics factsheet (February 2024)

Services

What we offer.

PV system, heat pump, storage, wallbox and monitoring from one team. Every service is planned as part of a working energy system.

Illustration of a home with a solar roof, heat pump and charging station.

01 · Roof & facade

Plan and install PV systems cleanly.

We review roof, structure, shading, cable routing, inverter and grid connection. Then we create a technically reliable quote.

Roof review · Coordination of electrical work · Handover

01 / 05

Components by

  • Fronius
  • LONGi Solar
  • BYD
  • SolarEdge
  • Ernst Schweizer
  • SMA
  • Stäubli
  • Huawei
  • KOSTAL

Process

Understand first, then promise.

We clarify roof, electrical work, incentives and expansion path before you receive a quote. No site chaos, no wishful math.

  1. 01
    About 2 minutes

    Initial estimate

    Your key details are enough for a first, honest orientation. No appointment, no obligation.

  2. 02
    Response within 24 h on business days

    3D survey & technical review

    We measure the roof by drone and clarify electrical work, regulations and the grid operator.

  3. 03
    A few days after the survey

    Transparent quote

    You see every line item individually, realistic ranges and sensible options such as storage or a wallbox.

  4. 04
    After permit and grid-operator approval

    Planning, installation & handover

    Planning and installation by Vigorek. Electrical connection, grid registration and commissioning are handled by an electrical contractor licensed under the NIV. We coordinate schedules and documents.

From installation practice

What no one sees once the modules are on.

Hooks and rails disappear under the modules. That is exactly where it is decided whether a system holds and the roof stays watertight. Marc Hammerschmidt has installed roofs like these himself and recorded the work on his phone.

Original footage, day 1trimmed, no sound

Site diary · one tiled roof

  1. Hooks come first. They sit under the tiles and later carry rails, modules, wind and snow.

    • Every hook in line, so the rails sit without stress.
    • The tile above each hook lies flat again, so rain runs off as before.
    • The scaffold at the eaves is up before anyone steps onto the roof.

  2. Aluminium rails go onto the hooks. Where they end is decided in the plan, not on the roof.

    • Roof windows, vent pipe and chimney stay clear.
    • Rail rows run parallel, so the module field gets a straight edge.

  3. By day four, the field is in place. When hooks and rails are right, the joints run straight by themselves.

    • Even joints, clamps on one line.
    • The field ends above the eaves; the bottom row of tiles stays clear.

More roofs

  • Black modules on a red tiled roof on installation day, eaves and scaffold railing below
    Same roof · day 4The modules are in place. The joints run through every row.
  • Hip roof with black tiles: the module rows get shorter towards the hip
    Hip roof · black tilesThe upper rows get shorter and follow the hip line.
  • Black modules on a grey concrete tile roof, next to an uncovered roof window
    Concrete tile roofBlack modules with black frames; the roof window stays clear.

Where this footage comes from. Installations Marc Hammerschmidt worked on himself. To protect the owners, we do not name the location or the client.

Your installation. We document it the same way: every step with date and image, as part of your system records.

The Founders

Engineering depth. Financial structure.

You know before signing who calculates your project and who builds it: two founders, one for engineering, one for finance. A solar system only works long-term when both fit together from the start.

Christian Freiberger

CFA · former KPMG Senior Manager

Co-Founder · Strategy & Finance

Independent management consultant since 2015, previously Senior Manager at KPMG. Most recently Interim Treasury Manager at an energy storage manufacturer. Christian brings the financial structure: liquidity planning, transparent calculations and no project whose numbers don’t add up.

CFATreasuryBusiness case

Marc Hammerschmidt

B.Eng. Mechanical Engineering

Co-Founder · Engineering & Planning

Marc handles the technical side: planning, structural analysis and system integration. He has helped install systems on roofs himself and plans so that nothing has to be improvised on the roof.

Mechanical Eng.System planningStructural analysis

All municipalities

Solar in the 80 municipalities of the Canton of Thurgau

Registered systems, solar capacity per resident, energy price 2027 and winter share of roofs per municipality, from federal data. 34 municipalities have their own page (in German) with yield, build-out and listed buildings.

80 municipalities, alphabetical

Municipalities in the Canton of Thurgau with federal figures
MunicipalitySystemsW per residentct/kWh 2027
Aadorf6981,62823.54
Affeltrangen2373,92024.94
Altnau1891,73218.91
Amlikon-Bissegg1835,48526.20
Amriswil6371,46423.60
Arbon42181622.40
Basadingen-Schlattingen1662,91224.52
Berg3172,49129.41
Berlingen5191325.79
Bettwiesen1071,59727.00
Bichelsee-Balterswil2171,67023.10
Birwinken1132,01423.40
Bischofszell3061,81533.10
Bottighofen1501,26326.80
Braunau1002,690–
Bürglen1861,39124.38
Bussnang1792,43024.75
Diessenhofen16488422.35
Dozwil662,16021.10
Egnach4002,78423.57
Erlen3022,74829.70
Ermatingen2601,66627.30
Eschenz1341,68926.10
Eschlikon3231,90122.73
Felben-Wellhausen1641,75822.81
Fischingen2482,24721.50
Frauenfeld9881,34120.93
Gachnang3351,70022.80
Gottlieben1360128.10
Güttingen1573,08726.67
Hauptwil-Gottshaus1712,89028.10
Hefenhofen1503,48123.45
Herdern1292,27127.00
Hohentannen723,64026.52
Homburg1573,21323.90
Horn1101,70618.80
Hüttlingen862,61032.46
Hüttwilen1332,89026.00
Kemmental3093,03627.60
Kesswil692,02824.40
Kradolf-Schönenberg2361,90927.80
Kreuzlingen71484722.59
Langrickenbach1412,79327.20
Lengwil2313,33031.27
Lommis1021,68423.95
Mammern331,06323.89
Märstetten2092,14432.18
Matzingen1351,12722.10
Müllheim2581,92730.05
Münchwilen2691,18622.87
Münsterlingen1871,09624.05
Neunforn781,58428.09
Pfyn1331,01623.50
Raperswilen382,12228.25
Rickenbach5571526.25
Roggwil2832,43828.75
Romanshorn3971,09520.02
Salenstein1011,07326.20
Salmsach1061,54619.82
Schlatt1882,50427.10
Schönholzerswilen812,66922.60
Sirnach4401,54923.51
Sommeri472,38525.54
Steckborn1931,13922.88
Stettfurt1012,07423.80
Sulgen2442,54123.54
Tägerwilen3942,02225.70
Thundorf1312,15523.80
Tobel-Tägerschen1222,62227.98
Uesslingen-Buch972,10030.40
Uttwil9484320.17
Wagenhausen1261,62824.40
Wäldi1103,09228.30
Wängi3561,86523.09
Warth-Weiningen1251,43327.60
Weinfelden5832,03024.06
Wigoltingen2422,39027.80
Wilen1991,44530.60
Wuppenau1412,75425.91
Zihlschlacht-Sitterdorf2202,54427.30

Systems: SFOE register (as of 2026-09-14). Energy price: cheapest grid operator in the municipality excluding fixed and metering fees, ElCom, profile H4. Winter roof: October–March share of the roof solar potential, SFOE (sonnendach.ch).

Your next step: an initial estimate in about 2 minutes.

Your key details produce a first orientation on price range, incentives and payback. That is the basis on which we talk about your project.

Free and non-binding.Response within 24 h on business days.Your data stays with us.

Direct contact

If the project is already more concrete.

Roof plans, photos or an existing quote are easiest to send us by email or WhatsApp.

Email

info@vigorek.ch

Phone

+41 78 615 90 58

Location

Kirchweg 32, 8102 Oberengstringen, Zürich, CH

Coverage

Planning and installation of photovoltaics in the Zurich region, Limmat Valley and eastern Aargau. Electrical work by a partner with an installation licence.

WhatsApp

Open chat

Core services

Services with a real focus on Thurgau

The key services, tailored directly to Thurgau and the local requirements in your region.

Regional service

PV installation Thurgau: solar mounting company

In Thurgau the canton-owned EKT AG operates the medium-voltage distribution grid, while the end-customer connection sits with local utilities such as Thurplus in Frauenfeld or Arbon Energie depending on the municipality. What matters here: the correct registration with the responsible grid operator and a look at the cantonal solar map, which shows per roof whether a building permit is required or a notification to the municipality suffices. For the canton's energy subsidy programme we coordinate the performance and base contributions plus the federal one-time payment.

Further reading

Helpful answers on solar in Thurgau

These guides answer the questions that come up most often before deciding on a solar installation.

PV notification Thurgau

Understand whether a PV system in Thurgau can be notified or whether heritage status, facade installation, design, size or grid connection triggers additional checks.

PV with roof renovation Thurgau

Understand when a roof renovation in Thurgau becomes a PV planning question: check cantonal energy requirements, roof condition, notification route, grid connection and installation before quoting.

Large PV roof areas in Thurgau

Understand how large PV systems on barns, halls, commercial and infrastructure roofs in Thurgau should be prepared: roof assessment, grid connection, incentive path, self-consumption and project organisation.

PV grid connection Thurgau

Grid connection and commissioning for a PV system in Thurgau: connection request, metering concept, meter, safety certificate, Pronovo data and handover in the right order.

PV incentives Thurgau

How property owners in Thurgau distinguish the Pronovo EIV, the cantonal funding portal and possible municipal programmes before implementation.

PV feed-in tariff Thurgau

How PV feed-in remuneration works in Thurgau in 2026: the SFOE reference market price, the 6 Rp./kWh minimum below 30 kW, the degressive minimum up to 150 kW, the Thurplus grid area, and the separation of self-consumption, guarantees of origin and Pronovo EIV.

PV tax deduction Thurgau

Which PV costs can be deducted in Thurgau, how incentives and feed-in income are treated, and why new builds require a different classification.

Battery storage funding Thurgau

Thurgau's 2026 battery-storage incentive pays CHF 1,000 per system, requires at least 10 kWh of usable capacity and is full after 700 applications. New applications go on a waiting list.

All locations by canton and municipality

The locations directory gives you an overview of all cantons and municipalities and takes you straight to the information for your region.

Open locations