Solar calculator Canton of Graubünden

What a solar system brings in the Canton of Graubünden

Worked out with the median 2026 household tariff in the Canton of Graubünden: 30.6 ct./kWh incl. VAT, 0.7 ct. above the median for Switzerland. For your municipality the calculator uses its own tariff.

Single-family house, existing building, south roof, without battery
Household	Consumption per year	System	Price after subsidy and tax deduction	Saving in year 1	Payback
4 persons	4,500 kWh	6.8 kWp	CHF 11,400–15,500	CHF 770–800	15–21 years
4 persons with heat pump	9,500 kWh	14.3 kWp	CHF 19,900–26,300	CHF 1,760–1,810	11–15 years
4 persons with heat pump and electric car	12,000 kWh	15.8 kWp	CHF 21,400–28,500	CHF 2,210–2,260	10–13 years

Assumptions: roof with room for about 16 kWp, 1,000 kWh per kWp and year, feed-in at 8 ct./kWh, one-off payment from Pronovo (CHF 360/kWp), tax deduction at a marginal rate of 25 %. Prices including installation and VAT. Heat pump +5,000 kWh, electric car +2,500 kWh a year.

Work it out for your address

Solar power in the Canton of Graubünden in figures

Electricity price 202630.6 ct./kWhHousehold (H4) incl. VAT, median of 100 municipalities
Range across municipalities11.3–39.4 ct./kWh0.7 ct. above the median for Switzerland
Solar potential of the roofs2,630 GWha year on the suitable roofs (SFOE)
Used today8.7 %222.8 MWp of solar installed

Sources: ElCom, tariffs 2026; Swiss Federal Office of Energy SFOE, solar potential of Swiss municipalities; Energie Reporter (SwissEnergy, CC BY 4.0).

Electricity price and saving by municipality in the Canton of Graubünden

The more expensive grid power is, the more the solar system saves. The table works out the example of 4 persons with the tariff of each municipality, most expensive power first.

Find municipality

Household H4 incl. VAT, ElCom 2026; saving in CHF in year 1, payback in years
Municipality	Grid operator	ct./kWh	Saving per year	Payback
Bergün Filisur	Elektrizitätswerk der Gemeinde Bergün Filisur	39.4	900–930	13–18
Vaz/Obervaz	Politische Gemeinde Vaz/Obervaz, Elektrizitätswerk / -Versorgung	34.4	830–850	14–20
La Punt Chamues-ch	Repower AG	33.4	810–840	14–20
Madulain	Repower AG	33.4	810–840	14–20
Trimmis	Trimmiser Industrielle Betriebe (TIB)	33.4	810–840	14–20
Sils im Engadin/Segl	Repower AG	33.3	810–840	14–20
Silvaplana	Repower AG	33.3	810–840	14–20
Bever	Repower AG	33.2	810–840	14–20
Falera	Repower AG	33.2	810–840	14–20
Fideris	Repower AG	33.2	810–840	14–20
Fläsch	Repower AG	33.2	810–840	14–20
Furna	Repower AG	33.2	810–840	14–20
Grüsch	Repower AG	33.2	810–840	14–20
Jenaz	Repower AG	33.2	810–840	14–20
Malans	Repower AG	33.2	810–840	14–20
Schiers	Repower AG	33.2	810–840	14–20
Seewis im Prättigau	Repower AG	33.2	810–840	14–20
Zizers	Repower AG	33.2	810–840	14–20
Zuoz	Repower AG	33.2	810–840	14–20
Calanca	Consorzio Energia Elettrica Calanca	33.1	810–830	14–20
Landquart	Repower AG	33.1	810–830	14–20
Rossa	Consorzio Energia Elettrica Calanca	33.1	810–830	14–20
Breil/Brigels	Repower AG	32.6	800–830	14–20
Disentis/Mustér	Repower AG	32.6	800–830	14–20
Ilanz/Glion	Repower AG	32.6	800–830	14–20
Laax	Repower AG	32.6	800–830	14–20
Lumnezia	Repower AG	32.6	800–830	14–20
Obersaxen Mundaun	Repower AG	32.6	800–830	14–20
Sagogn	Repower AG	32.6	800–830	14–20
Schluein	Repower AG	32.6	800–830	14–20
Sumvitg	Repower AG	32.6	800–830	14–20
Trun	Repower AG	32.6	800–830	14–20
Buseno	Comune di Buseno, Azienda Elettrica	32.5	800–830	14–20
Chur	IBC Energie Wasser Chur (IBC)	32.3	790–820	14–21
Scharans	Gemeinde Scharans, Elektrizitätswerk	32.1	790–820	14–21
Cama	Comune di Cama, Azienda Elettrica Comunale	32.0	790–820	14–21
Castaneda	Società Elettrica Sopracenerina SA (Mesolcina)	31.6	780–810	15–21
Conters im Prättigau	Repower AG	31.6	780–810	15–21
Klosters	Repower AG	31.6	780–810	15–21
Küblis	Repower AG	31.6	780–810	15–21
Luzein	Repower AG	31.6	780–810	15–21
Pontresina	Repower AG	31.6	780–810	15–21
San Vittore	Società Semplice Tra I Comuni, Concedenti Elin, Prestazioni di Servizio	31.6	780–810	15–21
Jenins	Politische Gemeinde Jenins, Energieversorgung	31.4	780–810	15–21
Albula/Alvra	Gemeinde Albula/Alvra	31.3	780–810	15–21
Churwalden	Rabiosa Energie	31.2	780–810	15–21
Samedan	Energia Samedan	31.1	780–800	15–21
Lantsch/Lenz	Gemeinde Lantsch/Lenz, Elektrizitätsversorgung	30.8	770–800	15–21
Untervaz	Gemeinde Untervaz, Elektroversorgung	30.7	770–800	15–21
Roveredo (GR)	Società Elettrica Sopracenerina SA (Mesolcina)	30.6	770–800	15–21
Santa Maria in Calanca	Società Elettrica Sopracenerina SA (Mesolcina)	30.6	770–800	15–21
Val Müstair	Provedimaint electric Val Müstair (PEM)	30.6	770–800	15–21
Medel (Lucmagn)	Ovra Electrica Medel, Elektrizitätswerk	30.2	760–790	15–21
Celerina/Schlarigna	St. Moritz Energie	29.8	760–780	15–22
Maienfeld	AG Elektrizitätswerk Maienfeld	29.6	750–780	15–22
Schmitten (GR)	Gemeinde Schmitten, Stromversorgung	29.5	750–780	15–22
St. Moritz	St. Moritz Energie	29.2	750–770	15–22
Grono	Media Mesolcina Energia	28.8	740–770	15–22
Lostallo	Media Mesolcina Energia	28.8	740–770	15–22
Soazza	Media Mesolcina Energia	28.8	740–770	15–22
Tujetsch	energia alpina	28.4	740–760	16–22
Mesocco	Comune Politico di Mesocco, Azienda Elettrica	28.2	730–760	16–22
Bonaduz	Rhiienergie AG (rhiienergie)	27.7	720–750	16–23
Domat/Ems	Rhiienergie AG (rhiienergie)	27.7	720–750	16–23
Felsberg	Rhiienergie AG (rhiienergie)	27.7	720–750	16–23
Rhäzüns	Rhiienergie AG (rhiienergie)	27.7	720–750	16–23
Tamins	Rhiienergie AG (rhiienergie)	27.7	720–750	16–23
Arosa	Arosa Energie	27.6	720–750	16–23
Safiental	Gemeinde Safiental, Stromversorgung	27.5	720–750	16–23
Flims	Flims Trin Energie AG	27.1	720–740	16–23
Trin	Flims Trin Energie AG	27.1	720–740	16–23
Cazis	Elektrizitätswerk der Stadt Zürich	26.3	700–730	16–23
Domleschg	Elektrizitätswerk der Stadt Zürich	26.3	700–730	16–23
Flerden	Elektrizitätswerk der Stadt Zürich	26.3	700–730	16–23
Fürstenau	Elektrizitätswerk der Stadt Zürich	26.3	700–730	16–23
Masein	Elektrizitätswerk der Stadt Zürich	26.3	700–730	16–23
Rothenbrunnen	Elektrizitätswerk der Stadt Zürich	26.3	700–730	16–23
Tschappina	Elektrizitätswerk der Stadt Zürich	26.3	700–730	16–23
Urmein	Elektrizitätswerk der Stadt Zürich	26.3	700–730	16–23
Davos	EWD Elektrizitätswerk Davos AG	25.6	690–720	17–24
S-chanf	Gemeinde S-chanf Energia S-chanf	25.3	690–720	17–24
Surses	Impianti elettrici Bivio società cooperativa	25.2	690–710	17–24
Scuol	EE Energia Engiadina	22.8	650–680	18–25
Poschiavo	Comune di Poschiavo, Azienda elettrica	22.4	640–670	18–26
Zernez	Gemeinde Zernez	22.2	640–670	18–26
Valsot	EE Energia Engiadina	21.7	630–660	18–26
Vals	Elektrizitätswerk Vals (EW Vals)	20.8	620–650	18–27
Samnaun	EW - Samnaun	20.4	610–640	19–27
Rheinwald	Gemeinde Rheinwald, Elektrizitätsversorgung	20.1	610–640	19–27
Bregaglia	Comune di Bregaglia, Azienda Elettrica	19.9	610–630	19–27
Thusis	Gemeinde Thusis, Energieversorgung	17.5	570–600	20–29
Avers	Gemeinde Andeer, Elektrizitätswesen	15.1	530–560	21–31
Andeer	Gemeinde Andeer, Elektrizitätswesen	14.6	520–550	22–32
Ferrera	Gemeinde Andeer, Elektrizitätswesen	14.6	520–550	22–32
Brusio	Comune di Brusio, Erogazione d'Energia Elettrica	14.2	520–550	22–32
Sufers	Gemeinde Sufers, Stromverkauf	13.5	510–540	23–33
Sils im Domleschg	Gemeinde Sils im Domleschg, Elektrizitätswerk	13.3	510–530	23–33
Zillis-Reischen	Gemeinde Andeer, Elektrizitätswesen	12.4	490–520	23–34
Muntogna da Schons	Gemeinde Andeer, Elektrizitätswesen	11.9	480–510	24–35
Rongellen	Gemeinde Andeer, Elektrizitätswesen	11.3	470–500	24–36

Solar calculator for places in the Canton of Graubünden

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Frequently asked questions

Questions about the solar calculator

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044 980 08 80 info@solarinnovation.ch

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.

What does a solar system cost in the Canton of Graubünden?

For a single-family house of 4 persons the calculator proposes about 6.8 kWp. That costs CHF 17,700–23,200 including installation and VAT. After the one-off payment and the tax deduction, CHF 11,400–15,500 remain. For your roof, the solar calculator above works it out with your address.

Is a solar system worth it in the Canton of Graubünden?

With the median electricity price in the Canton of Graubünden (30.6 ct./kWh incl. VAT) this system saves CHF 770–800 in the first year and has paid for itself after 15–21 years. With a heat pump and an electric car it is CHF 2,210–2,260 and 10–13 years, because you use more of the solar power yourself.

In which municipality in the Canton of Graubünden does solar pay most?

Where grid power is most expensive: Bergün Filisur (39.4 ct.), Vaz/Obervaz (34.4 ct.), La Punt Chamues-ch (33.4 ct.). It is cheapest in Rongellen (11.3 ct.). The more expensive grid power is, the more every kilowatt hour you use yourself saves.

Does the Canton of Graubünden subsidise photovoltaics?

The canton can subsidise photovoltaic systems designed for winter power (Art. 23a BEG). According to the guide, you need at least 3 kWp, a tilt of 60 to 90 degrees and an application before building work starts. We clarify the current contribution with the Office for Energy and Transport when preparing the quote.

Can I deduct a solar system from my taxes in Graubünden?

Yes, for existing buildings in private ownership. The tax office lists the installation of a photovoltaic system among investments in energy saving and environmental protection, and it also allows battery storage.

How accurate is the solar calculator?

It gives guide values, not a quote. It uses the federal roof data (sonnendach.ch), the electricity price of your municipality (ElCom 2026) and the one-off payment from Pronovo. What it cannot see: roof condition, shade from trees, electrical system, access. That is why we check these during a free site visit and send you a binding quote within 72 hours.

Where does the roof data come from?

From the Swiss Federal Office of Energy (sonnendach.ch). It records area, pitch, orientation and solar irradiation of every roof face of every building in Switzerland. The aerial image is from swisstopo. We count about 70 % of the area as panel area; the rest is needed for edges, gaps and roof windows.

Which subsidies are included?

The federal one-off payment (Pronovo): CHF 360 per kWp for systems below 30 kWp, proportionally less above. Plus the tax deduction for existing private buildings, calculated with a marginal tax rate of 25 %. Cantonal and municipal grants are not included; we check them during the site visit.

Is a battery worth it?

A battery raises self-consumption but costs more. Whether it pays depends on the feed-in tariff and your consumption. That is why the calculator shows both options side by side.

Why do you need my contact details?

We send you the results by e-mail, and a project manager looks at the figures. We do not pass on your details. We are not a referral portal; we plan and build the systems ourselves.

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.

Solar calculator Canton of Graubünden: What can your roof do?

Have the figures checked on site, free of charge.