Regional service

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

Local system fit

Flat-roof photovoltaics in Aargau 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

Aargau

Service focus

Flat-Roof Photovoltaics

Regional fit

Aargau

Context

How this service works in Aargau in practice.

Aargau 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 Aargau 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 Aargau, industrial and logistics buildings along major transport routes offer large-area flat roofs optimally suited for PV. From 2026 AEW pays around 8.2 Rp./kWh including HKN or the BFE reference market price without HKN; at cantonal level only facade PV is funded (integrated facade CHF 400/kWp, mounted facade CHF 200/kWp, from 75 degrees), not battery storage. With over 520 MW of installed PV capacity, Aargau is among the leading solar cantons. PSI and PARK INNOVAARE create an environment that drives technological innovation in flat-roof planning. Aargau: the one-time payment (Pronovo, roof-integrated CHF 380/kWp) combined with the full tax deduction pays off. At cantonal level Aargau funds facade PV specifically (integrated facade CHF 400/kWp). Even so only 7.6% potential utilized — huge growth opportunities! Aargau solar offensive active.

In Canton Aargau, 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

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 Aargau: what matters here

In Canton Aargau, 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 Aargau, 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 Aargau, grid operators such as AEW Energie AG, metering concept and commissioning are aligned early.

Decision reason

In Canton Aargau, 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, 8.2 Rp./kWh (AEW) is one relevant reference point.

Cantonal framework

Which cantonal framework shapes the project in Aargau.

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

Aargau sets the economic pace for this service.

Aargau is known as the "energy canton" – with PSI (Paul Scherrer Institute) in Villigen, which also researches solar technologies. The high density of industrial and commercial buildings offers enormous potential for large rooftop systems.

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Tax and subsidy logic

In Aargau, PV systems can be fully deducted from taxes as value-maintaining and energy-saving investments. The canton allows distribution over several tax periods when taxable income is exceeded. Aargau grants no general cantonal PV top-up per kWp for standard roof systems. The CHF 360–400/kWp (roof-integrated CHF 380/kWp) and the CHF 250/kWp parking-area bonus come from the national Pronovo one-time payment, not from the canton. At cantonal level, Aargau funds building-integrated and facade PV (integrated facade CHF 400/kWp, mounted facade CHF 200/kWp, from 75 degrees tilt, since 2025) and individually assessed large systems from ~100 kWp. In addition there is the full tax deduction (from 2026 with the net principle for the feed-in tariff). Exact rates: Energy Funding Programme 2025–2026, energieberatungAARGAU.

Permits and energy law

Notification via EVEN portal. Standard roof systems require no building permit. Parking lot solar: simplified approval. Aargau solar offensive supports quick action. Aargau relies on individual responsibility, flanked by MuKEn 2014 requirements for new buildings. The revised Energy Act (EnergieG AG) requires self-generation for new buildings and restricts fossil heating upon replacement.

Market signal and location

Aargau: the one-time payment (Pronovo, roof-integrated CHF 380/kWp) combined with the full tax deduction pays off. At cantonal level Aargau funds facade PV specifically (integrated facade CHF 400/kWp). Even so only 7.6% potential utilized — huge growth opportunities! Aargau solar offensive active. Aargau grants no general cantonal PV top-up for roof systems; cantonal funding targets facade PV (integrated facade CHF 400/kWp, mounted facade CHF 200/kWp, from 75 degrees tilt). AEW Energie AG offers attractive feed-in tariffs as regional provider. Additionally, Aargau subsidizes consulting through the cantonal energy advisory service.

One-time payment

CHF 380/kWp Pronovo, dachintegriert

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 Aargau – overview

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

Service

PV installation

The right entry point for general mounting questions.

Hub

Location overview

More regions and locations at a glance.

Guide

PV permitting in Aargau

Notification under §49a BauV, design rules and exceptions for protected objects.

Guide

Pronovo one-time incentive in Aargau

Applying for the one-time incentive alongside self-consumption and tax deduction.

Guide

Self-consumption & ZEV in Aargau

How a self-consumption community raises the economics of the system.

Guide

PV grid connection in Aargau

Classify TAG, installation notice, SiNa and commissioning in the AEW area and with other grid operators.

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 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.

Primary

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

Canton Zug: Zug has a high density of smart energy solutions and ZEV models, driven by its innovative tech scene. Many companies in the region use solar systems as part of their sustainability strategy – including in Crypto Valley. Here owners can find the services that matter most for planning, installation and commissioning in this region.

Primary

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

Canton Solothurn: The Canton of Solothurn was one of the first cantons to fully implement MuKEn 2014. The southern Jura slopes around Solothurn and Grenchen benefit from above-average sunshine hours and ideal southern exposure. Here owners can find the services that matter most for planning, installation and commissioning in this region.