COMPLETE PV SYSTEMS · OPTIONAL STORAGE
In Canton Uri, orientation, pitch and horizon determine the yield of your solar system. Cool temperatures increase module efficiency. Combined with full tax deduction and the Pronovo one-time payment, a solar system in Uri can be worthwhile.
In the Uri valley floor, horizon, orientation and pitch determine the yield. At around 2,500 m, ZHAW measures a yield 70 to 85 percent above an average Swiss system at its Davos Totalp test site (measurement period 2018 to 2024). That does not apply to a roof in the valley. We calculate the yield of your roof individually.
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 Uri is 1,154 kWh/m² per year (MeteoSwiss, Altdorf station, 1991 to 2020 average). Whether that works on your roof in Uri 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 Uri they include energieUri.
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.
Clarity before commitment
Canton check
Many projects start with a rough roof idea. We translate it into a verifiable concept with layout plan, cable routes, safety logic and documented handover.
Canton Uri has its own rules for subsidies, permits and grid connection. We check them before quoting and record them in the project documentation.
Global irradiation in Canton Uri: 1,154 kWh/m² per year (MeteoSwiss, Altdorf station, 1991 to 2020 average).
Relevant grid operators in the canton: energieUri. Metering concept and registration are clarified before execution.
Uri enables flexible solutions for alpine buildings. Standard notification procedure for normal roof systems. For large alpine systems: Solarexpress procedure (accelerated since 2022). Sidenplangg project received building permit for large alpine system.
Uri Energy Funding Programme 2026 (budget ~CHF 2.1m): winter-electricity PV bonus CHF 1,000 flat + CHF 250/kW for steeply tilted systems (60–90 degrees), max. CHF 50,000/project, on top of the Pronovo one-time payment. New in 2026: bidirectional charging stations CHF 2,000 flat. Apply before implementation via portal.dasgebaeudeprogramm.ch/ur. Plus the full tax deduction.
All municipalities
Registered systems, solar capacity per resident, energy price 2027 and winter share of roofs per municipality, from federal data. 6 municipalities have their own page (in German) with yield, build-out and listed buildings.
19 municipalities, alphabetical
| Municipality | Systems | W per resident | ct/kWh 2027 | Winter roof |
|---|---|---|---|---|
| Altdorf | 287 | 772 | 18.87 | 27 % |
| Andermatt | 9 | 93 | 18.12 | 28 % |
| Attinghausen | 65 | 590 | 18.87 | 27 % |
| Bürglen | 149 | 595 | 18.87 | 28 % |
| Erstfeld | 167 | 1,002 | 22.68 | 27 % |
| Flüelen | 51 | 486 | 18.87 | 25 % |
| Göschenen | 3 | 147 | 14.05 | 23 % |
| Gurtnellen | 12 | 357 | 18.87 | 26 % |
| Hospental | 2 | 931 | 18.12 | 27 % |
| Isenthal | 3 | 80 | 18.87 | 27 % |
| Realp | 8 | 770 | 18.12 | 29 % |
| Schattdorf | 187 | 1,245 | 18.87 | 26 % |
| Seedorf | 99 | 1,030 | 18.87 | 25 % |
| Seelisberg | 35 | 996 | 18.87 | 26 % |
| Silenen | 71 | 635 | 18.87 | 27 % |
| Sisikon | 13 | 543 | 18.87 | 24 % |
| Spiringen | 25 | 457 | 18.87 | 29 % |
| Unterschächen | 8 | 191 | 18.87 | 29 % |
| Wassen | 5 | 146 | 18.87 | 26 % |
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 Uri and the local requirements in your region.
Regional service
Whether the building is on the valley floor or at a higher elevation, fixing design requires its precise address, roof records and structural information. Elevation, exposure and delivery access need a property-specific assessment. Uri’s notification form also helps establish the procedure for the proposed configuration and location.
Regional service
In Canton Uri, flat roofs on commercial buildings and multi-family homes represent the largest untapped solar area. Uri has adapted its cantonal energy law to MuKEn 2014. New buildings must meet self-generation requirements. The canton considers the specific conditions of alpine buildings and enables flexible solutions.
Further reading
These guides answer the questions that come up most often before deciding on a solar installation.
Uri's 2026 energy programme supports winter-optimised PV systems on existing buildings with a flat CHF 1,000 plus CHF 250 per kWp from 2 kWp when the tilt and application timing meet the rules.
In Canton Uri, notification is usually sufficient for suitably adapted roof systems. Art. 32a RPV, protected objects, protected zones and the Uri notification form determine whether a building application is required.
How a LEG works in the energieUri grid area: a 5% generation ratio, the same political municipality, smart meters and three months’ lead time before registration.
PV feed-in payment in the energieUri grid area follows the BFE reference market price in 2026; systems below 30 kW receive at least 6.00 Rp./kWh, while larger systems are classified by self-consumption and capacity.
The locations directory gives you an overview of all cantons and municipalities and takes you straight to the information for your region.
