Photovoltaics for businesses in the Canton of Thurgau
Commercial solar in the Canton of ThurgauFor businesses and farms.
In the Canton of Thurgau, the solar map shows whether your roof only needs to be notified. We check it, visit you free of charge and send your quote within 72 hours.
- Site visit: free and with no obligation
- Binding quote within 72 hours
- Calculated with the business tariff in the Canton of Thurgau: 26.8 ct./kWh
Prefer to talk?044 980 08 80
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- documented reference systems
- 29
- output of these systems
- 718.1kWp
- to a binding quote
- 72h
- is what the site visit costs
- 0CHF
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Data in the Canton of Thurgau
Solar power for businesses in the Canton of Thurgau
- Electricity price 2026 for small businesses
- 26.8ct./kWh
- Category C2 (30,000 kWh a year), excluding VAT. 1.7 ct. above the Swiss median (25.1 ct.).
- Household electricity price 2026
- 29.4ct./kWh
- Median of the grid operators, excluding VAT. 1.7 ct. above the Swiss median (27.7 ct.).
- Solar potential of the roofs per year
- 2,818GWh
- Used so far: 17.1% (Switzerland 12.8%).
- Solar potential of the façades per year
- 848GWh
- Façades yield less than roofs, but more in winter.
- Solar power per person per year
- 1,511kWh
- Switzerland: 866 kWh.
- hailstones are to be expected about every 50 years
- 3.5cm
- Typical value of the communes according to MeteoSwiss. Important for choosing modules and for insurance.
Example: 100 kWp system on a commercial roof in the Canton of Thurgau
- Yield per yeararound 100,000 kWh
- Used in the business (50%)50,000 kWh
- Grid power saved per yeararound CHF 13,400
- Federal one-off paymentaround CHF 31,800
Guide value, not a quote. Assumptions: 1,000 kWh per kWp, a business that uses power during the day, electricity price 26.8 ct./kWh excluding VAT (category C2). Large businesses often have their own tariffs. We calculate with your load profile. More in our guide How much does a solar system cost?
Calculate it for my businessSources: ElCom (electricity prices 2026), Swiss Federal Office of Energy (solar potential), Energie Reporter by geoimpact on behalf of SwissEnergy (solar power, electric cars; CC BY 4.0), Federal Statistical Office (Register of Buildings and Dwellings), MeteoSwiss (hail climate), Energy Promotion Ordinance (one-off payment).
Commercial solar in the Canton of Thurgau
What applies to businesses with a solar system in the Canton of Thurgau
Rules for businesses in the Canton of Thurgau
For new buildings, the cantons’ model provisions provide for own power generation. In the Canton of Thurgau, builders have a choice (§ 8 para. 1bis Energienutzungsgesetz): they generate at least 30 W per m² of energy reference area with photovoltaics, or they meet a limit value for weighted energy demand that is 10 kWh per m² a year lower. The upper limit of 30 kW from the earlier rule no longer applies. New buildings with less than 50 m² of energy reference area are exempt. The canton has no replacement levies.
For businesses, the own-power option often pays off, because the solar power is used in the workshop, stable or cold store anyway. We run through both routes with your building project.
Notification instead of permit
Since September 2025, around 60 percent fewer buildings in the Canton of Thurgau have needed a permit. In the building zone, systems that are sufficiently well integrated and cover 35 m² or more must be notified to the commune. A building permit is needed in ISOS areas with conservation objective A and for individually protected objects. The solar map in ThurGIS shows which case applies to your building.
Subsidies and one-off payment
The federal government pays the one-off payment (Einmalvergütung) through Pronovo, graded by system size. We submit the application and, on request, pre-finance the subsidies. The canton’s 2026 energy subsidy programme does not support photovoltaic systems directly. It has a contribution for battery storage, whose quota for 2026 was used up according to the programme. For depreciation in business assets, your tax adviser can advise you.
Self-consumption in farming and commerce
Thurgau has many large roofs on farms and in commercial zones. If you need power during the day for a milking system, cooling or machinery, you use a large share directly. We read out your load profile data and size the system accordingly. A battery storage unit lowers load peaks, and an EV charger supplies company vehicles with your own power.
Grid operators
Electricity prices 2026 in the Canton of Thurgau
What power from the grid costs is set by your grid operator. The more expensive grid power is, the more every kilowatt hour you use from your own roof is worth.Swiss median: 27.7 ct./kWh.
| Commune | Grid operator | ct./kWh |
|---|---|---|
| Frauenfeld | Thurplus | 29.5 |
| Kreuzlingen | Energie Kreuzlingen, Stadt Kreuzlingen | 28.9 |
| Arbon | Arbon Energie AG | 29.3 |
| Amriswil | Regio Energie Amriswil (REA) | 29.4 |
| Weinfelden | Technische Betriebe Weinfelden AG | 31.9 |
| Romanshorn | Genossenschaft EW Romanshorn | 24.9 |
| Aadorf | Elektra Häuslenen | 29.3 |
| Sirnach | EW Sirnach AG | 29.4 |
Source: ElCom, Federal Electricity Commission, tariffs 2026.
The free site visit
One appointment at your home. Then you know everything.
A project manager from our team visits you and checks three things. No sales show, no obligation. Afterwards you receive a binding quote with yield, subsidies and payback.
01Roof
Area, orientation, pitch, condition of the roof covering and shading.
02Electrical system
Grid connection, distribution board and space for inverter and battery.
03Your consumption
Electricity bill, car, heating, plans. From this we calculate yield and subsidies.
How your project runs
Request
Tell us briefly about your building and your goal. Online or by phone.
Site visit
We check your roof, electrical system and consumption at your home. Free of charge.
Quote in 72 hours
Binding and transparent, with yield, subsidies and payback.
Permit and subsidies
We handle the notification procedure, the grid operator and Pronovo.
Installation and commissioning
Our own installers, a fixed date, final inspection with you on the roof.
Step 1 takes one minute. We take care of the rest.
Google reviews
What our customers say about us.
5.0
Unabridged and unedited, straight from our Google profile. The reviews are in German.
All reviews on GoogleWir sind sehr zufrieden mit unserer Wallbox für unser E-Auto.
Cemil B. · October 2026
Wir können Solarinnovation.ch und insbesondere Jordan für seine kompetente Beratung und perfekte Umsetzung als zuverlässigen Partner für nachhaltige Energielösungen aus einer Hand von Herzen weiterempfehlen. Er hat uns mit seinem umfangreichen Fachwissen von der ersten Beratung bis und mit der Umsetzung kompetent begleitet. Er hat alle Fragen immer verständlich erklärt. Wir sind mit der Indach-Solaranlage, kombiniert mit einem Speicher sehr zufrieden.
Daniel · August 2026
Die SolarInnovation GmbH hat mich durch ihre sehr flexible und kompetente Beratung und Arbeitsausführung sehr überzeugt!
Frederic L. · September 2025
Eine sehr seriöses Firma. Danke Aulson, Danke Jorden.
Alex I. · August 2025
Top Service und super Beratung! Unsere Solaranlage am linken Zürichseeufer läuft perfekt, produziert mehr Strom als erwartet und sieht auch noch toll aus. Absolut empfehlenswert!
Marc W. · August 2025
Built near you.
29 projects, 718.1 kWp in total. From Zumikon and Lachen we work all over German-speaking Switzerland, most often in the cantons of Zurich, St. Gallen, Schwyz and Aargau.
Canton of Zurich
- Rüti41.1 kWp
- Zürich26.6 kWp
- Zürich6.8 kWp
- Zürich10.9 kWp
- Gossau ZH7.7 kWp
- Zollikerberg17.7 kWp
- Ebmatingen16.9 kWp
- Ebmatingen17 kWp
- Zürich7.5 kWp
- Maur6.9 kWp
- Herrliberg14.8 kWp
- Herrliberg12 kWp
- Meilen17.2 kWp
- Bachs10.2 kWp
Canton of St. Gallen
Canton of Schwyz
Canton of Aargau
- Staffelbach16 kWp
- Reinach AG20.7 kWp
- Berikon19.8 kWp
- Oberkulm20.7 kWp
Canton of Lucerne
Canton of Zug
Frequently asked questions
Before you get in touch.
Is the site visit really free?
Yes. The visit and the quote cost you nothing and commit you to nothing. You only decide once you hold the binding quote in your hands.
Must a new commercial building in the Canton of Thurgau have a solar system?
Builders choose: either own power generation of 30 W per m² of energy reference area, or they come in 10 kWh/m² a year below the limit value for energy demand. New buildings under 50 m² of energy reference area are exempt.
How do I check in the Canton of Thurgau whether my hall can be notified?
The solar map in ThurGIS shows building by building whether a permit is needed. That now affects only around 10 percent of buildings. For your address, we check the map at the site visit.
Does the Canton of Thurgau subsidise commercial systems?
The canton does not subsidise photovoltaic systems directly. You receive the federal one-off payment (Einmalvergütung), graded by system size. We submit the application and check whether your commune offers anything on top.
How large a roof does a commercial system need?
A rule of thumb: each kWp needs around 5 to 6 m² of module area. Commercial systems often start at 30 kWp and go well beyond. We measure what fits on your roof at the site visit.
How high is self-consumption in a business?
That depends on the business. If you work during the day, you often use a large share of the solar power directly. Businesses with cooling, machinery or ventilation in the daytime usually do better than offices. We read out your load profile data for this.
Can a solar system reduce peak loads?
In part. Solar power peaks at midday, but demand peaks can also occur in the morning or evening. A commercial battery with controls can cut peaks. We calculate beforehand whether that brings anything under your tariff.
Which regions do you cover?
All of German-speaking Switzerland. We build most often in the cantons of Zurich, St. Gallen, Schwyz and Aargau. Our locations are in Zumikon ZH and Lachen SZ.
From one company
Goes well with
The first step
We come to you. Free of charge.
We check your roof, electrical system and consumption. Afterwards you know what is possible on your roof, what it costs and which subsidies you receive. The binding quote follows within 72 hours.
- Free and with no obligation
- Quote within 72 hours
- Subsidies pre-financed on request
