Substance
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
Photovoltaics in Aargau – Mittelland with full solar yield
Aargau is known as the "energy canton" and is driving solar expansion with strong infrastructure. Thanks to its location in the midlands, the canton offers good irradiation values, and the combination of Pronovo and the full tax deduction makes the investment particularly profitable.
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.
Built to Swiss standards (NIN/ESTI)Free & non-bindingData stays confidential
Figures with sources
Solar in Aargau: cost, size, storage.
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
Example: 5–10 kWp rooftop PV: CHF 13,500–27,000. 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.
Costs with calculation and sourcesSizing
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 Aargau is around 1160 kWh/m² per year. Whether that works on your roof in Aargau 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 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 Aargau: AEW Energie AG.
When battery storage makes sense
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 · 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 Aargau.
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
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
From roof surface to energy surface.
Full-black, in-roof or flat-roof: in Aargau 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 Aargau, 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.
Canton check
Solar system in Canton Aargau: what matters regionally
For local PV projects, the municipal boundary is not the only factor: roof access, snow load, shading, meter cabinet and grid connection determine the project flow.
Canton Aargau has its own rules for subsidies, permits and grid connection. We check them before quoting and record them in the project documentation.
Roof potential
Canton Aargau guideline: approx. 1160 kWh/m² global irradiation per year.
Grid & utility
Relevant grid operators in the canton: AEW Energie AG. Metering concept and registration are clarified before execution.
Permit
Notification via EVEN portal. Standard roof systems require no building permit. Parking lot solar: simplified approval. Aargau solar offensive supports quick action.
Subsidies & taxes
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.
In the region
Solar installations in the municipalities of Canton Aargau
- Aarau
- Aarburg
- Abtwil
- Ammerswil
- Aristau
- Arni
- Auenstein
- Auw
- Baden
- Beinwil (Freiamt)
- Beinwil am See
- Bellikon
- Bergdietikon
- Berikon
- Besenbüren
- Bettwil
- Biberstein
- Birmenstorf
- Birr
- Birrhard
- Birrwil
- Boniswil
- Boswil
- Bottenwil
- Böttstein
- Bözberg
- Böztal
- Bremgarten
- Brittnau
- Brugg
- Brunegg
- Buchs
- Bünzen
- Büttikon
- Buttwil
- Densbüren
- Dietwil
- Dintikon
- Dottikon
- Döttingen
- Dürrenäsch
- Eggenwil
- Egliswil
- Ehrendingen
- Eiken
- Endingen
- Ennetbaden
- Erlinsbach
- Fahrwangen
- Fischbach-Göslikon
- Fisibach
- Fislisbach
- Freienwil
- Frick
- Full-Reuenthal
- Gansingen
- Gebenstorf
- Geltwil
- Gipf-Oberfrick
- Gontenschwil
- Gränichen
- Habsburg
- Hägglingen
- Hallwil
- Hausen
- Hellikon
- Hendschiken
- Herznach-Ueken
- Hirschthal
- Holderbank
- Holziken
- Hunzenschwil
- Islisberg
- Jonen
- Kaiseraugst
- Kaisten
- Kallern
- Killwangen
- Kirchleerau
- Klingnau
- Koblenz
- Kölliken
- Künten
- Küttigen
- Laufenburg
- Leibstadt
- Leimbach
- Lengnau
- Lenzburg
- Leuggern
- Leutwil
- Lupfig
- Magden
- Mägenwil
- Mandach
- Meisterschwanden
- Mellikon
- Mellingen
- Menziken
- Merenschwand
- Mettauertal
- Möhlin
- Mönthal
- Moosleerau
- Möriken-Wildegg
- Muhen
- Mühlau
- Mülligen
- Mumpf
- Münchwilen
- Murgenthal
- Muri
- Neuenhof
- Niederlenz
- Niederrohrdorf
- Niederwil
- Oberentfelden
- Oberhof
- Oberkulm
- Oberlunkhofen
- Obermumpf
- Oberrohrdorf
- Oberrüti
- Obersiggenthal
- Oberwil-Lieli
- Oeschgen
- Oftringen
- Olsberg
- Othmarsingen
- Reinach
- Reitnau
- Remetschwil
- Remigen
- Rheinfelden
- Riniken
- Rothrist
- Rottenschwil
- Rudolfstetten-Friedlisberg
- Rüfenach
- Rupperswil
- Safenwil
- Sarmenstorf
- Schafisheim
- Schinznach
- Schlossrued
- Schmiedrued
- Schneisingen
- Schöftland
- Schupfart
- Schwaderloch
- Seengen
- Seon
- Siglistorf
- Sins
- Sisseln
- Spreitenbach
- Staffelbach
- Staufen
- Stein
- Stetten
- Strengelbach
- Suhr
- Tägerig
- Tegerfelden
- Teufenthal
- Thalheim
- Uerkheim
- Uezwil
- Unterentfelden
- Unterkulm
- Unterlunkhofen
- Untersiggenthal
- Veltheim
- Villigen
- Villmergen
- Vordemwald
- Wallbach
- Waltenschwil
- Wegenstetten
- Wettingen
- Widen
- Wiliberg
- Windisch
- Wittnau
- Wohlen
- Wohlenschwil
- Wölflinswil
- Würenlingen
- Würenlos
- Zeihen
- Zeiningen
- Zetzwil
- Zofingen
- Zufikon
- Zurzach
- Zuzgen
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
Complete PV systems with planning, installation, electrical coordination and commissioning across all German-speaking cantons.
Core services
Services with a real focus on Aargau
The key services, tailored directly to Aargau and the local requirements in your region.
Regional service
PV Installation Aargau – Roof & Electrical
Aargau is known as the "energy canton" – with PSI (Paul Scherrer Institute) in Villigen researching solar technologies and PARK INNOVAARE as an innovation cluster. From 2026 AEW Energie AG pays a fixed tariff of around 8.2 Rp./kWh including HKN or the BFE reference market price without HKN (statutory minimum 6 Rp./kWh up to 30 kW). The high density of industrial and commercial buildings offers enormous potential for large rooftop systems. At cantonal level, Aargau funds facade PV (integrated facade CHF 400/kWp, mounted facade CHF 200/kWp, from 75 degrees tilt); there is no cantonal battery storage subsidy.
Regional service
Solar Installation Aargau – Planning to Commissioning
Aargau is among the few cantons that did not proactively implement MuKEn 2014 – but since 2025, the federal solar obligation applies for new buildings over 300 m². From 2026 AEW Energie AG pays a fixed tariff of around 8.2 Rp./kWh including HKN or the BFE reference market price without HKN. The canton pioneers agri-PV: four pilot projects generate up to 2.2 GWh/year. Spatial planning adjustments (July 2022) enable agri-PV on agricultural land – a regulatory framework unique in Switzerland.
Regional service
Flat-Roof Photovoltaics Aargau – Loads, Roof Protection and Mounting
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.
Further reading
Helpful answers on solar in Aargau
These guides answer the questions that come up most often before deciding on a solar installation.
PV permitting Canton Aargau
Roof or facade: when notification via EVEN is enough in Aargau, which protected areas require a permit and what to submit before installation.
Solar obligation in Canton Aargau: what builders must clarify before PV planning
Clarify when Aargau's solar obligation applies to new buildings, how the minimum area is calculated, and which exceptions must be evidenced before building submission.
Pronovo, AEW & tax rules Aargau
Explains how the Pronovo funding category, AEW feed-in model and the new Aargau tax rules from 2026 interact, and which project data needs to be consistently prepared.
PV battery storage Aargau
Assess when a battery storage system fits a PV system in Aargau: prepare self-consumption, AEW metering, grid connection, wallbox, heat pump and incentive logic cleanly.
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.