The roof leads, not the sales graphic.
Mounting, waterproofing, shading and electrical work are clarified on the actual building — not on a model.

COMPLETE PV SYSTEMS · OPTIONAL STORAGE
From roof assessment to commissioning: we plan your PV system, check incentives and grid connection, and compare costs with and without a battery. Start with a no-obligation assessment of your roof.
Assess roof, protection status and grid connection together.
Your PV project in Ausserrhoden
Example: 5–10 kWp rooftop PV · Market benchmark
Incl. 8.1% VAT, before incentives and tax deductions, without a battery. Calculated from the SFOE median of CHF 2,497/kWp: 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.
SFOE price survey 2025 · 03 Aug 2026 (PDF)Up to 50% cantonal top-up on the federal one-off payment. Check eligibility and mandatory capacity first; apply after commissioning and the legally binding Pronovo decision.
Incentives for my projectSource: Canton AR · kM-21The municipality determines whether notification is sufficient or a permit is needed. For traditional buildings and protected areas, clarify this before finalising the panel layout.
Check the local procedureSource: AR guide · June 2024 (PDF)Grid operator and connection conditions depend on your property. For PV below 30 kW in 2026, SAK pays at least 6 Rp./kWh or the higher quarterly reference price; guarantees of origin are considered separately.
Prepare the grid connectionSource: SAK · 2026 tariffsInformation checked: 5 September 2026
Services
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 · Electrical coordination · Commissioning
01 / 05
Process
From first contact to commissioning, every system follows a clear process. We clarify roof, electrical work, incentives and expansion path completely. Only then do you receive a reliable 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.
We coordinate execution, registration, acceptance and documentation until your system is reliably connected to the grid.
Swiss facts
Applies to residential and commercial properties.
Economics
We map self-consumption, feed-in tariff and payback for your property — so you see early what the system realistically returns.
Proof
Our quotes are not built from flat packages, but from checked data, technical pre-assessment and clearly itemized positions.
Planning basis
Roof potential, irradiation and addresses are checked against GeoAdmin and BFE Sonnendach: the same datasets used by federal and cantonal bodies.

Property review
The initial estimate gives realistic orientation. For the final quote, we capture roof areas, access and technical conditions through a 3D survey (drone) and on-site review — precise, not based on satellite assumptions.

Electrical
From electrical planning through protection equipment to grid registration: all safety-critical steps are carried out by licensed electrical professionals, in-house or through vetted partners.

Quote
Every line item is shown individually instead of hidden in a flat package — so variants and ranges stay traceable from the start.

Execution standard
Regional clarification
In Switzerland, permits, grid operator, metering concept and incentive path always depend on the property, municipality and canton. These are exactly the points clarified early before a quote becomes binding.
That avoids a generic promise and creates a well-founded assessment that fits the region and the building.
Components by
The Founders
You know before signing who calculates your project and who builds it. Behind that are two founders with two areas of expertise — engineering and finance — and the conviction that 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, system integration and execution that remains traceable a decade later. An engineering mindset means no improvisation, only well-reasoned solutions for every roof.
Next step
Questions about your roof? We’ll go through them with you personally — the initial estimate is the easiest way in.
Building in focus
Full-black, in-roof or flat-roof: in Appenzell Ausserrhoden we plan not for a datasheet, but for a building that has to stand up architecturally and within its local context.

Architecture first
In Appenzell Ausserrhoden, materiality, visual lines and technical details are aligned so the system fits the design language and performs cleanly over time.
Mounting, waterproofing, shading and electrical work are clarified on the actual building — not on a model.
The system grows precisely into the building: tight penetrations, protected facade, modules sliding into the rails, and an aesthetic that fits the architecture instead of disturbing it.
The inverter, registration and documentation are done, cable routes and labels stay traceable, and the roof becomes a calm, reliable energy source for everyday use.
Mounting, waterproofing, shading and electrical work are clarified on the actual building — not on a model.
The system grows precisely into the building: tight penetrations, protected facade, modules sliding into the rails, and an aesthetic that fits the architecture instead of disturbing it.
The inverter, registration and documentation are done, cable routes and labels stay traceable, and the roof becomes a calm, reliable energy source for everyday use.
Clarity before commitment
The key points are explained clearly, factually and without artificial urgency. For details, we assess your property in its project context.
Canton check
Single-family homes, agricultural buildings and smaller commercial roofs need different mounting systems. Before quoting, we review roof membrane, cable routing, inverter location and possible scaffolding logic.
Canton Appenzell Ausserrhoden has its own rules for subsidies, permits and grid connection. We check them before quoting and record them in the project documentation.
For Canton Appenzell Ausserrhoden, we review orientation, pitch, shading and available module area for the specific building.
Relevant grid operators in the canton: SAK (Netzbetreiber am Objekt prüfen). Metering concept and registration are clarified before execution.
The cantonal June 2024 guide distinguishes suitably adapted rooftop systems requiring notification from projects requiring a permit. Check listed-building and protected-area status before planning. The municipality determines the procedure.
For commissioning from September 2025, the cantonal contribution can reach 50% of the federal one-off payment, capped at CHF 100,000 per project. Apply after commissioning and the legally binding final Pronovo decision. Mandatory minimum generation capacity and systems receiving the high one-off payment are excluded.
In the region
Your key details produce a first orientation on price range, incentives and payback — a solid basis to talk through your project.
A realistic span for your roof — not a rounded sales promise.
Electrical scope, metering and grid connection belong to the calculation from the start, not to a surprise afterwards.
If it fits, a traceable quote follows. If it doesn’t, we’ll tell you that openly.
Start here
Quick to complete, concrete as a starting point for your building — and no obligation.
Direct contact
If you prefer to speak directly or already have documents and project context at hand, you can reach us through the usual channels.
Works well for
Roof plans, photos, existing quotes, questions around electrical coordination or already defined project timelines.
Phone
Location
Kirchweg 32, 8102 Oberengstringen, Zürich, CH
Coverage
Complete PV systems with planning, installation, electrical coordination and commissioning across all German-speaking cantons.
Core services
The key services, tailored directly to Appenzell Ausserrhoden and the local requirements in your region.
Regional service
For PV installation in Appenzell Ausserrhoden, we assess roof condition, fixings, cable routes and protection status. Grid operator and connection requirements are checked for the property. A clear quote separates mounting, electrical work and optional components.
Regional service
We align PV, self-consumption, battery options and grid connection with your building. For commissioning from September 2025, the cantonal top-up is up to 50% of the federal one-off payment. Eligibility, mandatory capacity and application timing are checked before the final quote.
Regional service
For flat roofs in Appenzell Ausserrhoden, load capacity, waterproofing, wind and snow loads determine the layout. We assess mounting, maintenance access and grid connection together with the permission procedure.
Further reading
These guides answer the questions that come up most often before deciding on a solar installation.
What support a PV system in Appenzell Ausserrhoden can receive in 2026, when the application is admissible and which Pronovo exceptions apply.
When notification is sufficient for a solar system in Appenzell Ausserrhoden, when a building application is needed, and which plans the municipality expects.
When a virtual self-consumption community is possible in the SAK grid area and how metering, agreement and internal billing fit together.
Register PV and storage in the SAK grid area: prepare the connection request, inspection, test protocol and safety certificates for handover.
The locations directory gives you an overview of all cantons and municipalities and takes you straight to the information for your region.