Heat pump in the Canton of Solothurn
Heat pump in the Canton of SolothurnHeating system, Solothurn.
The Canton of Solothurn pays CHF 3,550 for replacing an oil, gas or electric heating system with an air-to-water unit up to 15 kW. We check your house free of charge and prepare 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 Solothurn: 30.4 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
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Data in the Canton of Solothurn
Heating in the Canton of Solothurn in figures
- Household electricity price 2026
- 30.4ct./kWh
- Median of the grid operators, excluding VAT. 2.7 ct. above the Swiss median (27.7 ct.).
- of residential buildings heat with oil or gas
- 57.9%
- Switzerland: 49.8%. Oil 38.6%, gas 19.3%.
- of residential buildings already use a heat pump
- 28.6%
- Switzerland: 26.2%.
- of residential buildings were built before 1981
- 58.0%
- Switzerland: 59.5%. Older houses often still run oil or gas boilers.
- Solar power per person per year
- 973kWh
- Switzerland: 866 kWh.
- Solar potential of the roofs per year
- 2,358GWh
- Used so far: 13.1% (Switzerland 12.8%).
Example: replacing an oil heating system in a single-family home in the Canton of Solothurn
- Heat demand per yeararound 20,000 kWh
- Heating oil no longer neededaround 2,000 litres
- Power needed by the heat pumparound 5,700 kWh
- Cost with grid poweraround CHF 1,730
Guide value, not a quote. Assumptions: air-to-water heat pump with a seasonal performance factor of 3.5, around 10 kWh of heat per litre of heating oil, electricity price 30.4 ct./kWh excluding VAT. Power from your own roof lowers the cost, and a ground-source heat pump needs less power. More in our guide How much does a heat pump cost?
Calculate it for my houseSources: 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).
Heat pump in the Canton of Solothurn
What applies to your heat pump in the Canton of Solothurn
Permit: air-to-water and borehole
For an air-to-water heat pump with an outdoor unit, noise protection is the main concern. The Environment Office recommends assessing the sound early. The basis is the enforcement guide of the Cercle Bruit (Swiss noise abatement association) with the noise protection assessment of the Swiss heat pump association (Fachvereinigung Wärmepumpen Schweiz). We prepare this assessment and clarify with your commune which procedure applies to your plot.
In the Canton of Solothurn, a borehole (ground probe) always needs a permit from the Environment Office. Whether drilling is possible is shown by the online query for ground-source heat boreholes on the canton’s geoportal. During drilling, the canton inspects the work.
Replacing your heating system: what the Energy Act requires
The completely revised Energy Act of the Canton of Solothurn was rejected on 9 February 2025, with about 57.5 percent voting no. A new cantonal obligation to heat with renewables when an oil or gas heating system is replaced has therefore not been introduced. Anyone who has to replace their system anyway can still switch straight away and use the subsidy. We clarify in advance which requirements your commune sets when a heating system is replaced.
Subsidies in the Canton of Solothurn
The canton subsidises replacing oil, gas and electric heating with electrically powered heat pumps. For air-to-water units up to 15 kW, it is CHF 3,550. Between 15 and 70 kW, the canton pays CHF 1,100 plus CHF 150 per kW. Boreholes and water-to-water units up to 70 kW receive CHF 6,000 plus CHF 450 per kW. The subsidy is calculated with at most 50 watts of rated output per square metre of energy reference area.
The application must be submitted before work starts. Up to 15 kW, the canton requires the heat pump system module, and above that the performance guarantee. We submit permit and subsidy applications.
Grid operator and electricity price
In the Canton of Solothurn, several utilities supply the communes, mainly BKW, Primeo Netz, AVAG and Regio Energie Solothurn. At 30.4 ct. per kWh, the cantonal median is above the Swiss median of 27.7 ct. (excluding VAT, household category H4, ElCom 2026). We register the heat pump with the grid operator. Blocking times and tariffs differ by utility, and we clarify them in advance.
Grid operators
Electricity prices 2026 in the Canton of Solothurn
What power from the grid costs is set by your grid operator. It sets the running costs of your heat pump. Power from your own roof lowers them, and the more expensive grid power is, the more it saves.Swiss median: 27.7 ct./kWh.
| Commune | Grid operator | ct./kWh |
|---|---|---|
| Olten | Städtische Betriebe Olten (SBO) | 30.4 |
| Grenchen | SWG | 27.5 |
| Solothurn | Regio Energie Solothurn | 30.7 |
| Zuchwil | BKW Energie AG | 26.8 |
| Biberist | BKW Energie AG | 27.2 |
| Derendingen | Regio Energie Solothurn | 30.0 |
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.
How high is the subsidy for a heat pump in the Canton of Solothurn?
For air-to-water heat pumps up to 15 kW, the canton pays CHF 3,550. Ground-source heat pumps up to 70 kW receive CHF 6,000 plus CHF 450 per kW. The application must be submitted before work starts, and we submit it for you.
May I drill a borehole in the Canton of Solothurn?
In every case, drilling needs a permit from the canton. The online query for ground-source heat boreholes shows whether your plot qualifies. The application goes to the Environment Office (Amt für Umwelt), and we handle the submission.
Do I have to replace an old oil heating system in the Canton of Solothurn?
There is no fixed deadline for replacement. The completely revised Energy Act was rejected at the ballot box on 9 February 2025. During a site visit, we check whether switching is worthwhile for your house.
Which heating systems does the Canton of Solothurn subsidise?
It subsidises replacing oil, gas and electric heating with electrically powered heat pumps. Up to 15 kW, the heat pump system module (Wärmepumpen-System-Modul) is required, and above that the performance guarantee from EnergieSchweiz (SwissEnergy).
How long does replacing the heating take, from enquiry to commissioning?
The site visit usually takes place within a week, and the quote follows within 72 hours. Depending on permits and delivery times, a few weeks to a few months then pass. Installing an air-to-water heat pump often takes only a few days. With a ground-source heat pump, the drilling comes on top.
When should I replace my old heating system?
Ideally before it fails. Then there is time for planning, permits and the subsidy application. If you only enquire after a breakdown, you have to decide under time pressure. For oil and gas heating from about 20 years old, it is worth asking now.
Do I have to insulate the house first?
Not in every case. What matters is the flow temperature your heating needs. We measure it during the site visit and check whether your existing radiators are sufficient or whether some should be replaced.
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.
Locations
Heat pump in your commune
Communes in the Canton of Solothurn
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
