Self-consumption community in the Canton of Basel-City
ZEV and vZEV in the Canton of Basel-CityShare solar power at home.
In Basel-City, IWB supplies all three communes. We work out how solar power can be shared in your building through a ZEV and send the quote within 72 hours.
- Site visit: free and with no obligation
- Binding quote within 72 hours
- Calculated with the electricity price in the Canton of Basel-City: 33.2 ct./kWh
Prefer to talk?044 980 08 80
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- documented reference systems
- 29
- output of these systems
- 718.1kWp
- to a binding quote
- 72h
- is what the site visit costs
- 0CHF
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Partner 2025
Data in the Canton of Basel-City
Apartment buildings and solar power in the Canton of Basel-City
- Household electricity price 2026
- 33.2ct./kWh
- Median of the grid operators, excluding VAT. 5.5 ct. above the Swiss median (27.7 ct.).
- apartment buildings
- 12,121
- 50.7% of residential buildings (Switzerland 22.7%).
- Solar potential of the roofs per year
- 634GWh
- Used so far: 9.4% (Switzerland 12.8%).
- Solar power per person per year
- 264kWh
- Switzerland: 866 kWh.
- of passenger cars are electric
- 5.1%
- Switzerland: 5.5%. An EV charger turns solar power into driving power.
- of residential buildings already use a heat pump
- 9.9%
- Switzerland: 26.2%.
Example: apartment building with a 30 kWp system in the Canton of Basel-City
- Yield per yeararound 30,000 kWh
- Used in the building (50%)15,000 kWh
- Value at the grid pricearound CHF 4,980 a year
- Federal one-off paymentCHF 10,800
Guide value, not a quote. Assumptions: 1,000 kWh per kWp, several flats with heat pump or electric car, electricity price 33.2 ct./kWh excluding VAT. How the value is shared between owners and residents depends on the internal electricity price, which we set with you. More in our guide Solar power from your own roof
Calculate it for our buildingSources: ElCom (electricity prices 2026), Swiss Federal Office of Energy (solar potential), Energie Reporter by geoimpact on behalf of SwissEnergy (solar power, electric cars; CC BY 4.0), Federal Statistical Office (Register of Buildings and Dwellings), MeteoSwiss (hail climate), Energy Promotion Ordinance (one-off payment).
ZEV and vZEV in the Canton of Basel-City
What applies in Basel-City for ZEV, vZEV and LEG
ZEV, vZEV and LEG in brief
In a ZEV (self-consumption community), several parties behind one shared grid connection share the solar power from their own roof. In a vZEV (virtual ZEV), every flat keeps its own connection, and the grid operator allocates the power through its metering. The LEG (local electricity community) has been possible since 1 January 2026 and allows solar power to be exchanged within a grid area. The basis is the federal Energy Act (Art. 17 and 18). Tenants take part voluntarily.
What applies in Basel-City
In 2025, the cantonal government referred a revised solar offensive to the Grand Council. It provides for a solar duty for existing buildings with more than 100 m² of suitable roof area, taking effect after a transition period of 15 years. Owners who do not comply would pay a replacement levy of CHF 150 per kW. Exceptions include cultural monuments of cantonal or national importance. This is a proposal and not yet law. For new buildings we have not found a separate rule, and we clarify it for your project with the authorities.
For owners and property managers, this means: a solar system with a ZEV can be built voluntarily today and fits this development.
Grid operator and metering
The grid operator across the whole canton is IWB Industrielle Werke Basel. Among other things, it offers a solar pool in which solar power is used and shared together. We have not found a public information sheet on ZEV, vZEV and LEG with deadlines and meter requirements. So before the quote, we ask IWB directly about registration, metering and billing. In a ZEV, we meter each party separately behind the shared connection, so that tenant changes stay simple.
We plan the solar system and metering from a single source and coordinate both with your utility.
Grid operators
Electricity prices 2026 in the Canton of Basel-City
What power from the grid costs is set by your grid operator. The more expensive grid power is, the more every kilowatt hour you use from your own roof is worth.Swiss median: 27.7 ct./kWh.
| Grid operator | Communes | ct./kWh |
|---|---|---|
| IWB Industrielle Werke Basel | 3 | 33.2 |
Source: ElCom, Federal Electricity Commission, tariffs 2026.
The free site visit
One appointment at your home. Then you know everything.
A project manager from our team visits you and checks three things. No sales show, no obligation. Afterwards you receive a binding quote with yield, subsidies and payback.
01Roof
Area, orientation, pitch, condition of the roof covering and shading.
02Electrical system
Grid connection, distribution board and space for inverter and battery.
03Your consumption
Electricity bill, car, heating, plans. From this we calculate yield and subsidies.
How your project runs
Request
Tell us briefly about your building and your goal. Online or by phone.
Site visit
We check your roof, electrical system and consumption at your home. Free of charge.
Quote in 72 hours
Binding and transparent, with yield, subsidies and payback.
Permit and subsidies
We handle the notification procedure, the grid operator and Pronovo.
Installation and commissioning
Our own installers, a fixed date, final inspection with you on the roof.
Step 1 takes one minute. We take care of the rest.
Google reviews
What our customers say about us.
5.0
Unabridged and unedited, straight from our Google profile. The reviews are in German.
All reviews on GoogleWir sind sehr zufrieden mit unserer Wallbox für unser E-Auto.
Cemil B. · October 2026
Wir können Solarinnovation.ch und insbesondere Jordan für seine kompetente Beratung und perfekte Umsetzung als zuverlässigen Partner für nachhaltige Energielösungen aus einer Hand von Herzen weiterempfehlen. Er hat uns mit seinem umfangreichen Fachwissen von der ersten Beratung bis und mit der Umsetzung kompetent begleitet. Er hat alle Fragen immer verständlich erklärt. Wir sind mit der Indach-Solaranlage, kombiniert mit einem Speicher sehr zufrieden.
Daniel · August 2026
Die SolarInnovation GmbH hat mich durch ihre sehr flexible und kompetente Beratung und Arbeitsausführung sehr überzeugt!
Frederic L. · September 2025
Eine sehr seriöses Firma. Danke Aulson, Danke Jorden.
Alex I. · August 2025
Top Service und super Beratung! Unsere Solaranlage am linken Zürichseeufer läuft perfekt, produziert mehr Strom als erwartet und sieht auch noch toll aus. Absolut empfehlenswert!
Marc W. · August 2025
Built near you.
29 projects, 718.1 kWp in total. From Zumikon and Lachen we work all over German-speaking Switzerland, most often in the cantons of Zurich, St. Gallen, Schwyz and Aargau.
Canton of Zurich
- Rüti41.1 kWp
- Zürich26.6 kWp
- Zürich6.8 kWp
- Zürich10.9 kWp
- Gossau ZH7.7 kWp
- Zollikerberg17.7 kWp
- Ebmatingen16.9 kWp
- Ebmatingen17 kWp
- Zürich7.5 kWp
- Maur6.9 kWp
- Herrliberg14.8 kWp
- Herrliberg12 kWp
- Meilen17.2 kWp
- Bachs10.2 kWp
Canton of St. Gallen
Canton of Schwyz
Canton of Aargau
- Staffelbach16 kWp
- Reinach AG20.7 kWp
- Berikon19.8 kWp
- Oberkulm20.7 kWp
Canton of Lucerne
Canton of Zug
Frequently asked questions
Before you get in touch.
Is the site visit really free?
Yes. The visit and the quote cost you nothing and commit you to nothing. You only decide once you hold the binding quote in your hands.
Is there a solar duty for existing buildings in Basel-City?
The revised solar offensive provides for a duty for buildings with more than 100 m² of suitable roof area, with a transition period of 15 years. It was referred to the Grand Council in 2025. We check the current status for your building.
Who is the grid operator for a ZEV in Basel-City?
IWB, which supplies all three communes of the canton. We clarify registration and metering with IWB before the quote, because we have not found a public information sheet on this.
Is a ZEV worthwhile in Basel-City with little roof area?
That depends on roof area, consumption and metering costs. In dense developments the area is often tight, so we calculate with your figures and tell you openly if a ZEV does not suit your building.
Do all tenants have to take part in a ZEV?
No. Anyone who does not want to take part stays with the electricity utility. Participation must be voluntary, and the solar power must not cost more than grid electricity. We set out how this is handled in your building in the concept.
What can the solar power cost in a ZEV?
The internal tariff must be below the grid operator's price for comparable customers. As an industry guide value, a discount of about 20 per cent applies. The rules can change. We check the current status during planning.
Do I need a new solar system for a ZEV?
Usually yes, or at least an extension. Existing systems can often be integrated if the metering and distribution are adapted. We check this during the site visit.
Which regions do you cover?
All of German-speaking Switzerland. We build most often in the cantons of Zurich, St. Gallen, Schwyz and Aargau. Our locations are in Zumikon ZH and Lachen SZ.
From one company
Goes well with
The first step
We come to you. Free of charge.
We check your roof, electrical system and consumption. Afterwards you know what is possible on your roof, what it costs and which subsidies you receive. The binding quote follows within 72 hours.
- Free and with no obligation
- Quote within 72 hours
- Subsidies pre-financed on request
