Substance
The roof leads, not the sales graphic.
Mounting, waterproofing, shading and electrical work are clarified on the actual building — not on a model.
SOLAR · STORAGE · HEAT PUMPS
Photovoltaics Diessenhofen: From planning to handover
For Diessenhofen, we plan photovoltaics with a focus on roof work, electrical coordination and a clean path to commissioning.
Region: Diessenhofen, ThurgauBuilt to Swiss standards (NIN/ESTI)Free & non-bindingData stays confidential
Services
What we offer.
PV system, heat pump, storage, wallbox and monitoring from one team. Every service is planned as part of a working energy system.
01 / 05
01 · Roof & facade
Plan and install PV systems cleanly.
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
Understand first, then promise.
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.
- 01About 2 minutes
Initial estimate
Your key details are enough for a first, honest orientation — no appointment, no obligation.
- 02Response within 24–48 h
3D survey & technical review
We measure the roof by drone and clarify electrical work, regulations and the grid operator.
- 03A few days after the survey
Transparent quote
You see every line item individually, realistic ranges and sensible options such as storage or a wallbox.
- 04After permit and grid-operator approval
Planning, installation & commissioning
We coordinate execution, registration, acceptance and documentation until your system is reliably connected to the grid.
Swiss facts
Applies to residential and commercial properties.
- One-time remuneration
- Federal support depends on system type and size band. Vigorek clarifies which remuneration rate applies to your property and how it interacts with canton and grid operator.
- Storage as a system decision
- A battery only pays off when it fits your consumption and home technology. We assess it as part of the overall plan — not as a late upsell.
- Realistic payback
- We calculate with ranges instead of wishful numbers: self-consumption, remuneration and tariff logic together give a realistic picture of your economic return.
Economics
What does your solar system save?
We map self-consumption, feed-in tariff and payback for your property — so you see early what the system realistically returns.
Proof
How sound planning becomes visible.
Our quotes are not built from flat packages, but from checked data, technical pre-assessment and clearly itemized positions.
Planning basis
Official data as the first cross-check
Roof potential, irradiation and addresses are checked against GeoAdmin and BFE Sonnendach: the same datasets used by federal and cantonal bodies.
Property review
Final quote based on verified data
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
Coordination by licensed professionals
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
Itemized instead of a flat package
Every line item is shown individually instead of hidden in a flat package — so variants and ranges stay traceable from the start.
Execution standard
- Fall protection
- Waterproofing
- Electrical installation to standard
- Documentation
Regional clarification
Not every system follows the same logic in Diessenhofen.
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
Engineering depth. Financial structure.
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.
CFATreasuryBusiness case
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.
Mechanical Eng.System planningStructural analysis
Questions about your roof? We’ll go through them with you personally — the initial estimate is the easiest way in.
Building in focus
From roof surface to energy surface.
Full-black, in-roof or flat-roof: in Diessenhofen we plan not for a datasheet, but for a building that has to stand up architecturally and within its local context.
Transformation
Architecture first
Architecture, use and yield planned together.
In Diessenhofen, materiality, visual lines and technical details are aligned so the system fits the design language and performs cleanly over time.
Full-BlackIndachFlachdach
Precision
Installation becomes visible before it has to be explained.
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.
Calm
Technology that stays calm after handover.
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.
Substance01
The roof leads, not the sales graphic.
Mounting, waterproofing, shading and electrical work are clarified on the actual building — not on a model.
Precision02
Installation becomes visible before it has to be explained.
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.
Calm03
Technology that stays calm after handover.
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
Answers before you decide.
The key points are explained clearly, factually and without artificial urgency. For details, we assess your property in its project context.
Costs, storage, single-family home
Solar in Diessenhofen: the figures people ask about most
Three questions decide almost every project before a roof is ever measured. Here they are with source and date, so it stays clear what each figure rests on.
Costs
What a system costs
The federal one-time payment covers at most 30 % of the investment cost of a reference system. For roof-integrated systems it is roughly 10 % higher, because the roof skin is part of the investment. The application is filed after commissioning via the Pronovo portal.
Swissolar puts a roof-integrated 50 m² system at roughly CHF 20,000 — after the one-time payment and tax deductions (Photovoltaics factsheet, February 2024). The exact figure depends on roof build-up, access and electrical work, not on module area alone.
Sizing
Single-family home: the realistic size
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 Thurgau is around 1120 kWh/m² per year. Whether that works on your roof in Diessenhofen 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.
Storage
Battery storage and self-consumption
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. Relevant grid operators in Canton Thurgau: Thurplus.
Sources: Swiss Federal Office of Energy, factsheet on PV promotion (PDF) · Pronovo, one-time payment for PV · Swissolar, photovoltaics factsheet (February 2024)
Municipality check
Solar system in Diessenhofen: what matters locally
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.
Diessenhofen belongs to Canton Thurgau. We therefore combine the local roof assessment with cantonal requirements for subsidies, permits, grid connection and documentation.
Roof potential
Canton Thurgau guideline: approx. 1120 kWh/m² global irradiation per year.
Grid & utility
Relevant grid operators in the canton: Thurplus. Metering concept and registration are clarified before execution.
Permit
Interactive solar map: for every building the map shows whether notification or building permit is needed (Green = notification, Orange = permit, Red ISOS = strict review). Facade systems: own rules. Roof systems: standard notification procedure.
Subsidies & taxes
Facade-exclusive from April 2025: CHF 200/kWp subsidy ONLY for facade systems pitched ≥75° (max CHF 10,000 per system, annual budget CHF 100,000). Pure roof systems: no cantonal subsidy since 1 Apr 2025. Swiss first! New for 2026: cantonal battery storage subsidy of CHF 1,000 flat from 10 kWh usable capacity (max. 25%, application before installation). Solar power pool: 25 years of history, 800+ systems, 16 MW capacity.
In the region
Solar installations in more municipalities in Canton Thurgau
Your next step: an initial estimate in about 2 minutes.
Your key details produce a first orientation on price range, incentives and payback — a solid basis to talk through your project.
01
You know where you stand
A realistic span for your roof — not a rounded sales promise.
02
The technical side is built in
Electrical scope, metering and grid connection belong to the calculation from the start, not to a surprise afterwards.
03
You decide calmly
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.
Free and non-binding.Response within 24–48 h.Your data stays with us.
Direct contact
If the project is already more concrete.
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
Planning, PV installation, electrical coordination and commissioning across German-speaking Switzerland.
Further reading
Helpful answers on solar in Diessenhofen
These guides answer the questions that come up most often before deciding on a solar installation.
PV notification Thurgau
Understand whether a PV system in Thurgau can be notified or whether heritage status, facade installation, design, size or grid connection triggers additional checks.
PV with roof renovation Thurgau
Understand when a roof renovation in Thurgau becomes a PV planning question: check cantonal energy requirements, roof condition, notification route, grid connection and installation before quoting.
Large PV roof areas in Thurgau
Understand how large PV systems on barns, halls, commercial and infrastructure roofs in Thurgau should be prepared: roof assessment, grid connection, incentive path, self-consumption and project organisation.
PV grid connection Thurgau
Grid connection and commissioning for a PV system in Thurgau: connection request, metering concept, meter, safety certificate, Pronovo data and handover in the right order.
All locations by canton and municipality
The locations directory gives you an overview of all cantons and municipalities and takes you straight to the information for your region.