COMPLETE PV SYSTEMS · OPTIONAL STORAGE
A 5–10 kWp rooftop system costs around CHF 14,500–23,300 before incentives in the Swiss market comparison. Pronovo pays a one-time CHF 360 per kW for a typical home system, and the canton adds CHF 150 or 300 per kWp if conditions are met. Roof systems usually need only a notification to the municipality.
Cantonal grant only if you apply on energie.gr.ch before construction
Solar in Graubünden
Roof, municipality, grid and funding: the key decisions at a glance.
CHF 150 per kWp for large systems on homes or CHF 300 for steep winter-power systems.
Submit one form per building at least 15 days before installation.
Identify the grid operator, file the connection early and model exports separately.
Ask for itemised positions and a month-by-month yield estimate.
Explore as needed
Graubünden funds photovoltaics through two programmes that cannot be combined. Residential buildings receive CHF 150 per kWp if the system exceeds the reference demand of 20 watts per m² of energy reference area by at least 50 percent and by at least 3 kWp; the capacity above 30 watts per m² is funded. Example: with 200 m² of energy reference area, a system qualifies from 7 kWp, and at 10 kWp, 4 kWp are funded, i.e. CHF 600. Steep winter-power systems with a 60 to 90 degree tilt receive CHF 300 per kWp. Both programmes require global radiation above 1,250 kWh per m² and year on the cantonal potential map and an application on energie.gr.ch before any construction or order. Together with Pronovo, public contributions may cover at most 50 percent of the costs.
In Graubünden, roof-mounted solar systems are subject to notification, not the building application procedure (Art. 40b KRVO). The cantonal form is completed per building and submitted to the municipal building authority at least 15 days before installation. The municipality checks under federal law whether the system is sufficiently adapted and has 15 working days to state that a building permit is required after all; if it does not respond within that period, work may begin. For protected buildings, townscape protection zones and larger facade systems, clarify the procedure before awarding the contract.
More than 40 grid operators work in Graubünden, from Repower to IBC in Chur, EWD in Davos and small municipal utilities. The grid operator at your address determines the connection, metering concept and the value of a self-consumed kWh. The electrician files the technical connection request early, in parallel with the notification. Exported power is paid at the SFOE quarterly reference market price, with at least 6 ct/kWh for systems up to 30 kWp; in 2026 Repower adds 0.5 ct/kWh for guarantees of origin in the first and fourth quarters and 0.2 ct/kWh in the second and third.
For rooftop systems of 2 to 10 kW, the Swiss median in 2025 was CHF 2,497 per kW excluding VAT, and CHF 1,911 per kW for 10 to 30 kW. Roof renovation, structural reinforcement, a new meter cabinet and a battery come on top. Ask for separate items for mounting, electrical work, grid connection and battery, and for a monthly yield estimate: the winter share differs considerably between municipalities in Graubünden, and a steep design for the winter-power grant is a separate calculation, not an obligation.
For the initial roof check
Quick answers
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. If the building and system meet the conditions, the canton adds CHF 150 or 300 per kWp. The actual price depends on an assessment of the roof, access and electrical installation.
In addition to the Pronovo one-time payment, the canton pays either CHF 150 per kWp for systems on residential buildings that produce clearly more than the reference demand, or CHF 300 per kWp for winter-power systems with a 60 to 90 degree tilt. The two programmes cannot be combined, and the application must be filed before construction.
For roof systems usually not: they are notified to the municipality with the cantonal form at least 15 days before installation. The municipality has 15 working days to state that a permit is required. Protected buildings and townscape protection zones may need a building application.
Steeply mounted modules deliver more power in the winter half-year, when demand is highest, for example with a heat pump; the canton pays CHF 300 per kWp for a 60 to 90 degree tilt. Whether it pays off depends on your winter consumption, your grid operator’s tariff and the mounting. We calculate both the steep and the standard design with monthly yields.
It depends on the municipality. Repower serves around a third of the municipalities in Graubünden, IBC serves Chur and EWD serves Davos, alongside many municipal and regional utilities. Your grid operator is shown on your electricity bill; your municipality’s page lists it with the 2027 electricity price.
Official figures · Canton of Graubünden
Totals across all 100 municipalities from federal datasets — with source and date below. Figures for your municipality are on its own page.
Self-consumption
Excluding fixed and metering fees, a purchased kWh on the standard tariff costs between 7.88 ct in Ferrera and 28.80 ct in Scharans 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 Graubünden:
| Grid operator | Municipalities | ct/kWh 2027 |
|---|---|---|
| Repower AG | 33 | 23.6–25.3 |
| IBC Energie Wasser Chur (IBC) | 1 | 24.9 |
| Rhiienergie AG (rhiienergie) | 5 | 26.8 |
| EWD Elektrizitätswerk Davos AG | 1 | 21.0 |
| Elektrizitätswerk der Stadt Zürich | 8 | 22.1 |
| St. Moritz Energie | 2 | 25.4–25.9 |
| EE Energia Engiadina | 3 | 15.5–17.0 |
| Flims Trin Energie AG | 2 | 21.3 |
Winter power
Suitable roofs in the Canton of Graubünden could produce 2,630 GWh of solar power per year; weighted by potential, 29% of it comes between October and March. The winter share is highest in Samedan (32%) and lowest in Rongellen (23%).
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.
Growth
Since January 2025, 1,339 systems with 34.4 MW have been added to the federal register. Per resident, the canton stands at 1,057 watts; among municipalities with at least 1,000 residents, the figure is highest in Maienfeld (2,530 W), Grüsch (2,166 W) and Trun (2,124 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
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
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
From your address, roof and consumption, with the incentives of your canton. We send the report by email straight away.
Free and non-binding · no sharing with third parties · no unsolicited calls
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 sourcesSizing
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 Graubünden is 1,379 kWh/m² per year (MeteoSwiss, Davos station, 1991 to 2020 average). Whether that works on your roof in Graubünden 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 installationStorage
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 Graubünden they include Repower.
When battery storage makes senseServices
PV system, heat pump, storage, wallbox and monitoring from one team. Every service is planned as part of a working energy system.
01 · Roof & facade
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
Process
We clarify roof, electrical work, incentives and expansion path before you receive a quote. No site chaos, no wishful math.
Your key details are enough for a first, honest orientation. No appointment, no obligation.
We measure the roof by drone and clarify electrical work, regulations and the grid operator.
You see every line item individually, realistic ranges and sensible options such as storage or a wallbox.
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
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.
Site diary · one tiled roof
Hooks come first. They sit under the tiles and later carry rails, modules, wind and snow.
Aluminium rails go onto the hooks. Where they end is decided in the plan, not on the roof.
By day four, the field is in place. When hooks and rails are right, the joints run straight by themselves.
More roofs
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
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.
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.
All municipalities
Registered systems, solar capacity per resident, energy price 2027 and winter share of roofs per municipality, from federal data. 21 municipalities have their own page (in German) with yield, build-out and listed buildings.
100 municipalities, alphabetical
| Municipality | Systems | W per resident | ct/kWh 2027 | Winter roof |
|---|---|---|---|---|
| Albula/Alvra | 104 | 1,538 | 25.02 | 29 % |
| Andeer | 24 | 648 | 10.88 | 29 % |
| Arosa | 116 | 646 | 20.90 | 31 % |
| Avers | 7 | 869 | 11.38 | 31 % |
| Bergün Filisur | 53 | 1,154 | 27.88 | 29 % |
| Bever | 22 | 559 | 25.08 | 31 % |
| Bonaduz | 190 | 1,131 | 26.77 | 27 % |
| Bregaglia | 10 | 458 | 14.75 | 27 % |
| Breil/Brigels | 158 | 1,908 | 24.58 | 30 % |
| Brusio | 9 | 207 | 10.60 | 29 % |
| Buseno | 4 | 456 | 22.90 | 31 % |
| Calanca | 8 | 551 | 23.90 | 31 % |
| Cama | 35 | 770 | 21.99 | 27 % |
| Castaneda | 32 | 1,322 | 23.15 | 30 % |
| Cazis | 211 | 1,885 | 22.06 | 29 % |
| Celerina/Schlarigna | 15 | 156 | 25.90 | 32 % |
| Chur | 746 | 665 | 24.95 | 26 % |
| Churwalden | 155 | 1,341 | 24.81 | 29 % |
| Conters im Prättigau | 17 | 1,329 | 23.58 | 28 % |
| Davos | 240 | 562 | 21.03 | 31 % |
| Disentis/Mustér | 143 | 2,067 | 24.58 | 29 % |
| Domat/Ems | 409 | 1,017 | 26.77 | 26 % |
| Domleschg | 275 | 1,724 | 22.06 | 30 % |
| Falera | 50 | 1,474 | 24.58 | 30 % |
| Felsberg | 209 | 1,641 | 26.77 | 28 % |
| Ferrera | 1 | 97 | 7.88 | 30 % |
| Fideris | 42 | 1,205 | 25.08 | 27 % |
| Fläsch | 34 | 983 | 25.08 | 29 % |
| Flerden | 28 | 1,007 | 22.06 | 30 % |
| Flims | 116 | 873 | 21.29 | 30 % |
| Furna | 13 | 982 | 25.08 | 30 % |
| Fürstenau | 23 | 663 | 22.06 | 30 % |
| Grono | 81 | 1,014 | 21.30 | 26 % |
| Grüsch | 153 | 2,166 | 25.08 | 28 % |
| Ilanz/Glion | 304 | 1,354 | 24.58 | 28 % |
| Jenaz | 65 | 1,048 | 25.08 | 28 % |
| Jenins | 45 | 1,069 | 24.88 | 30 % |
| Klosters | 159 | 747 | 23.58 | 30 % |
| Küblis | 49 | 1,280 | 23.58 | 28 % |
| La Punt-Chamues-ch | 17 | 749 | 25.28 | 32 % |
| Laax | 103 | 1,043 | 24.58 | 30 % |
| Landquart | 404 | 1,895 | 24.98 | 28 % |
| Lantsch/Lenz | 30 | 872 | 24.15 | 31 % |
| Lostallo | 58 | 1,398 | 21.30 | 28 % |
| Lumnezia | 208 | 1,799 | 24.58 | 31 % |
| Luzein | 140 | 1,623 | 23.58 | 31 % |
| Madulain | 5 | 303 | 25.28 | 31 % |
| Maienfeld | 188 | 2,530 | 23.80 | 29 % |
| Malans | 117 | 1,099 | 25.08 | 29 % |
| Masein | 64 | 1,305 | 22.06 | 29 % |
| Medel (Lucmagn) | 30 | 1,623 | 20.80 | 29 % |
| Mesocco | 76 | 749 | 19.16 | 31 % |
| Muntogna da Schons | 37 | 2,067 | 8.38 | 31 % |
| Obersaxen Mundaun | 116 | 1,750 | 24.58 | 28 % |
| Pontresina | 50 | 626 | 23.58 | 32 % |
| Poschiavo | 174 | 1,146 | 17.50 | 30 % |
| Rhäzüns | 127 | 1,074 | 26.77 | 26 % |
| Rheinwald | 19 | 813 | 15.50 | 30 % |
| Rongellen | 0 | 0 | 7.88 | 23 % |
| Rossa | 6 | 399 | 23.90 | 32 % |
| Rothenbrunnen | 30 | 1,538 | 22.06 | 29 % |
| Roveredo | 114 | 659 | 22.15 | 25 % |
| S-chanf | 19 | 927 | 19.70 | 31 % |
| Safiental | 74 | 1,538 | 19.15 | 29 % |
| Sagogn | 57 | 974 | 24.58 | 29 % |
| Samedan | 37 | 409 | 23.95 | 32 % |
| Samnaun | 9 | 141 | 17.04 | 28 % |
| San Vittore | 47 | 2,603 | 20.30 | 25 % |
| Santa Maria in Calanca | 9 | 681 | 22.15 | 31 % |
| Scharans | 47 | 1,216 | 28.80 | 29 % |
| Schiers | 111 | 678 | 25.08 | 28 % |
| Schluein | 56 | 2,298 | 25.08 | 29 % |
| Schmitten | 13 | 1,077 | 22.55 | 32 % |
| Scuol | 113 | 518 | 16.52 | 31 % |
| Seewis im Prättigau | 94 | 1,085 | 25.08 | 30 % |
| Sils im Domleschg | 16 | 268 | 10.00 | 25 % |
| Sils im Engadin/Segl | 12 | 862 | 25.18 | 31 % |
| Silvaplana | 7 | 138 | 25.18 | 32 % |
| Soazza | 18 | 672 | 21.30 | 29 % |
| St. Moritz | 48 | 237 | 25.35 | 31 % |
| Sufers | 9 | 1,620 | 10.30 | 30 % |
| Sumvitg | 65 | 1,270 | 24.58 | 28 % |
| Surses | 124 | 1,175 | 19.30 | 31 % |
| Tamins | 99 | 1,120 | 26.77 | 29 % |
| Thusis | 48 | 579 | 14.50 | 27 % |
| Trimmis | 113 | 1,395 | 25.88 | 28 % |
| Trin | 96 | 957 | 21.29 | 30 % |
| Trun | 71 | 2,124 | 24.58 | 28 % |
| Tschappina | 32 | 6,753 | 22.06 | 31 % |
| Tujetsch | 92 | 1,582 | 20.65 | 30 % |
| Untervaz | 82 | 1,465 | 22.91 | 27 % |
| Urmein | 29 | 2,542 | 22.06 | 31 % |
| Val Müstair | 71 | 1,858 | 22.10 | 29 % |
| Vals | 12 | 439 | 15.05 | 30 % |
| Valsot | 35 | 2,741 | 15.52 | 30 % |
| Vaz/Obervaz | 195 | 1,622 | 25.92 | 30 % |
| Zernez | 32 | 401 | 15.98 | 30 % |
| Zillis-Reischen | 17 | 789 | 8.88 | 28 % |
| Zizers | 202 | 2,096 | 25.08 | 27 % |
| Zuoz | 24 | 421 | 25.08 | 32 % |
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 key details produce a first orientation on price range, incentives and payback. That is the basis on which we talk about your project.
Direct contact
Roof plans, photos or an existing quote are easiest to send us by email or WhatsApp.
Phone
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.
Core services
The key services, tailored directly to Graubünden and the local requirements in your region.
Regional service
A valley property and an exposed mountain building need different planning assumptions. Yield and mounting costs therefore depend on the roof and its surroundings. An alpine utility-scale plant is not a benchmark for every residential roof.
Regional service
In Canton Graubünden, flat roofs on commercial buildings and multi-family homes represent the largest untapped solar area. Graubünden considers the specific conditions of high altitude in its energy law. New buildings have self-generation requirements, taking into account the extreme climatic conditions in mountain municipalities.
Further reading
These guides answer the questions that come up most often before deciding on a solar installation.
Graubünden funds photovoltaics through two mutually exclusive programmes: CHF 300 per kWp for steep winter-power systems and, since the end of 2025, CHF 150 per kWp for using the area potential on residential buildings.
Why roof-mounted systems in Graubünden fall under a notification duty rather than a building application, what the 15-working-day deadline triggers and why the municipality has the final say.
How Repower calculates PV feed-in payment in its grid area in 2026 using the SFOE reference market price, minimum rates, guarantees of origin and quarters.
The locations directory gives you an overview of all cantons and municipalities and takes you straight to the information for your region.
