Regional service

Flat-Roof Photovoltaics Thurgau – Loads, Roof Protection and Mounting

Local system fit

Flat-roof photovoltaics in Thurgau requires technically coordinated planning: wind load verification per SIA 261, roof membrane protection and SUVA-compliant fall protection are fixed components of every Vigorek project. The choice between east-west and south orientation is calculated individually based on available roof area, self-consumption profile and ballast requirements.

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Project profile

Location

Thurgau

Service focus

Flat-Roof Photovoltaics

Regional fit

Thurgau

Context

How this service works in Thurgau in practice.

Thurgau comes with its own framework conditions – from incentives and tax treatment to technical requirements. From those, a cleanly managed project flow for your property takes shape.

01Service focus

What matters most for flat roofs

Flat roofs in Canton Thurgau offer large PV potential – provided mounting angles, wind loads and maintenance access are aligned before installation. Exactly this planning step decides yield, roof protection and later maintenance. Flat-roof PV demands more than module rows on paper: wind load verification per SIA 261, roof membrane protection and SUVA-compliant fall protection are part of every Vigorek project scope. For multi-family buildings, commercial properties and industrial halls in Switzerland.

Mounting concept based on wind zone, snow load and roof-edge clearance – ballasted or penetrating, with a traceable wind load verification per SIA 261.
East-west or south layout matched to available roof area, self-consumption profile and ballast requirements – with realistic yield ranges rather than averages.
Protection concept for the roof membrane (separation fleece), maintenance walkways (min. 20 cm foot clearance) and SUVA-compliant fall protection with guardrails from 1 m height.
Structurally coordinated planning: PV dead loads, snow and wind loads per SIA 261, and existing roof structures – verified as a requirement, not an option.

02Regional framework

Why this canton shifts the priorities

In Canton Thurgau, flat roofs on commercial buildings and multi-family homes represent the largest untapped solar area. Thurgau implements energy regulations pragmatically and has adopted parts of MuKEn 2014 into its cantonal energy law. New buildings have self-generation requirements – PV systems are the preferred solution. Thurgau: Swiss paradigm shift — first canton to subsidize ONLY facade systems (from April 2025). This signals the shift from roof to facade in the PV industry. Solar map immediately shows every owner their status. Solar power pool: 25 years of experience.

In Canton Thurgau, load distribution, wind uplift and roof-skin protection must be resolved before ordering materials.
Flat roofs require a different mounting concept than pitched roofs – standard solutions often lead to change orders.
Maintenance paths and accessibility determine the long-term operating costs of the system.

03Project logic

How structure and roof membrane are planned together

The Canton of Thurgau allows full tax deduction for PV investments as property maintenance. Deductions can be spread over two consecutive tax periods if needed. Roof inspection assessing statics, roof skin and existing installations.

Roof inspection assessing statics, roof skin and existing installations.
Mounting geometry aligned with wind zone, tilt angle and usage concept.
Protection concept for roof skin, walkways and future maintenance access.

Regional context

Flat-Roof Photovoltaics in Thurgau: what matters here

In Canton Thurgau, cantonal rules, the responsible grid operator and local permit procedures shape how a project is planned and delivered. The points below show what really matters before quoting, installation and handover.

Regional starting point

In Canton Thurgau, incentives, grid operators and permit procedures change the priorities for this service.

Service core

Flat-roof PV is not a standard grid: wind load, ballast, roof membrane protection, walkways and later access define the design.

Grid & registration

For Canton Thurgau, grid operators such as Thurplus, metering concept and commissioning are aligned early.

Decision reason

In Canton Thurgau, load distribution, wind uplift and roof-skin protection must be resolved before ordering materials.

Execution

Roof inspection assessing statics, roof skin and existing installations.

Economic frame

Feed-in tariff and self-consumption are matched to the property; in the canton, Marktpreis BFE (quartalsweise) + 6 Rp./kWh Min. bis 30 kW + 2 Rp. HKN (Thurplus, ab 2026) is one relevant reference point.

Cantonal framework

Which cantonal framework shapes the project in Thurgau.

The technical service stays the same, but the project frame changes with the canton. That is exactly where incentives, tax treatment and MuKEn requirements become strategically relevant.

Local context

Thurgau sets the economic pace for this service.

The "Mostindien" canton offers plenty of roof space on agricultural buildings and fruit storage halls – ideal for large PV systems. The Lake Constance region also benefits from a mild climate and above-average sunshine hours.

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Tax and subsidy logic

The Canton of Thurgau allows full tax deduction for PV investments as property maintenance. Deductions can be spread over two consecutive tax periods if needed. 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.

Permits and energy law

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. Thurgau implements energy regulations pragmatically and has adopted parts of MuKEn 2014 into its cantonal energy law. New buildings have self-generation requirements – PV systems are the preferred solution.

Market signal and location

Thurgau: Swiss paradigm shift — first canton to subsidize ONLY facade systems (from April 2025). This signals the shift from roof to facade in the PV industry. Solar map immediately shows every owner their status. Solar power pool: 25 years of experience. Since April 2025 the canton (Solarstrom-Pool) subsidises exclusively facade systems pitched ≥75° with CHF 200/kWp, max. CHF 10,000 per system and an annual budget of CHF 100,000. Pure roof systems no longer receive a cantonal subsidy – here the federal Pronovo one-time payment remains the key direct support. New stationary battery storage with at least 10 kWh of usable capacity receives a one-time cantonal investment grant of CHF 1,000 in 2026 (max. 25% of total investment, application before installation, capped at 700 applications). Thurplus pays for exported solar power from 2026 on a market basis (quarterly BFE reference market price) plus 2 Rp./kWh for guarantees of origin, with a statutory minimum of 6 Rp./kWh up to 30 kW.

Facade bonus

CHF 200/kWp NUR Fassade (ab April 2025)

What genuinely helps you from here.

Whether you want to go deeper into the service, explore the location context or compare projects in nearby regions – here is where you continue.

Service

Flat-roof PV – service overview

Mounting, roof protection and project logic for flat roofs at a glance.

Location

Canton Thurgau – overview

Regional incentives, grid operators and framework conditions in Canton Thurgau.

Service

PV installation

The right entry point for general mounting questions.

Hub

Location overview

More regions and locations at a glance.

Guide

PV notification procedure in Thurgau

When notification is enough and which documents the municipality expects in Thurgau.

Guide

Grid connection & commissioning in Thurgau

Sequencing connection request, metering and commissioning cleanly in Thurgau.

Guide

PV with roof renovation in Thurgau

Why roof renovation and the solar obligation belong together and how to combine them.

Nearby regions

The same service in other regions

Vigorek delivers this service in neighbouring cantons and municipalities too. Depending on location, subsidies and conditions can vary – a comparison is worthwhile.

Primary

Flat-Roof Photovoltaics St. Gallen – Loads, Roof Protection and Mounting

Canton St. Gallen: St. Gallen is a center for energy research – OST (Eastern Switzerland University of Applied Sciences) and the SPF Institute for Solar Technology in Rapperswil are among the leading solar research institutions in Switzerland. Here owners can find the services that matter most for planning, installation and commissioning in this region.

Primary

Flat-Roof Photovoltaics Schaffhausen – Loads, Roof Protection and Mounting

Canton Schaffhausen: The Schaffhausen region benefits from above-average sunshine hours – around 1,700 hours per year – thanks to the climate influence of the Rhine valley. The compact canton enables particularly short approval processes. Here owners can find the services that matter most for planning, installation and commissioning in this region.

Primary

Flat-Roof Photovoltaics Zürich – Loads, Roof Protection and Mounting

Canton Zürich: Zurich is a pioneer in ZEV projects (self-consumption associations) in multi-family houses and has the most registered ZEV communities nationwide. ETH Zurich actively researches building-integrated solar technology. Here owners can find the services that matter most for planning, installation and commissioning in this region.