Canton
Solar thermal — Geneva
Depending on system sizing.
Geneva support for solar hot water production.
www.ge.chSolar water heating · Bernex
Solar water heating in Bernex
Indicative price, tips, grants and companies for your project in Bernex (Geneva).
At a glance
- Typical budget
- CHF 13'000 – CHF 30'200
- Midpoint
- CHF 20'900
- Grants found
- 1
- Nearby companies
- 4
Worked examples in Bernex
Small project
CHF 10'100 – CHF 23'600
Typical project
CHF 13'000 – CHF 30'200
Large project
CHF 17'800 – CHF 41'000
| Project | Quantity | Low | High | Per unit |
|---|---|---|---|---|
| Small project | 3 m² | CHF 10'100 | CHF 23'600 | CHF 5'500 |
| Typical project | 6 m² | CHF 13'000 | CHF 30'200 | CHF 3'500 |
| Large project | 11 m² | CHF 17'800 | CHF 41'000 | CHF 2'600 |
Computed with our estimator for Bernex (regional factor included), standard finish. Only the project size changes.
Cost split (typical project)
- Labour : CHF 8'400 (40 %)
- Materials : CHF 10'500 (50 %)
- Other costs : CHF 2'100 (10 %)
What the price covers
Included
- Supply and installation
- VAT
- Collectors, controls, standard connection and tank according to answers
Not included
- Permits and architect fees
- Unexpected structural issues
- Possible subsidies
- Roof refurbishment and replacement of main heating
Tips before you start
- Solar thermal collectors usually cover much of summer hot water.
- Combining collectors with a heat pump needs a sizing study.
- Several cantons subsidise collectors per m² or per installation.
Your project in 5 steps
1. Estimate
Set a budget range with the estimator.
2. Grants
Apply before work starts.
3. Quotes
Compare at least 3 quotes.
4. Permit
Check with the municipality whether a permit is needed.
5. Works
Follow the site and do a written handover.
Grants and subsidies
Check amounts and conditions with the provider before signing: apply before work starts in most cases.
Bernex's housing stock in figures
The federal building register lists 1'611 residential buildings with 4'686 dwellings in Bernex. 55% were built before 1980, before serious insulation standards, and 63% are still heated with oil or gas.
Only 12.2% of residential buildings in Bernex report a solar thermal system in the register, so most roofs are still free. Photovoltaics are not recorded there; check the solar cadastre for your roof.
Age of residential buildings
- Before 191910 %
- 1919–19454 %
- 1946–19605 %
- 1961–197013 %
- 1971–198023 %
- 1981–199015 %
- 1991–200010 %
- 2001–20109 %
- Since 201112 %
Main heating energy
- Heating oil39 %
- Gas24 %
- Heat pump22 %
- District heating7 %
- Electricity4 %
- Wood4 %
Heating and hot water: which energies?
| Energy | Heating | Hot water |
|---|---|---|
| Gas | 24 % | 22.6 % |
| Heating oil | 39 % | 36.6 % |
| District heating | 7 % | 6 % |
| Heat pump | 22 % | 3.1 % |
| Electricity | 4 % | 7.6 % |
| Wood | 4 % | 2.1 % |
| Solar thermal | 0 % | 11.6 % |
Each line gives the share of buildings using that energy, separately for heating and for hot water. The two columns do not always reach 100%: some buildings combine two systems, or reported none.
Type of heating system
- Boiler (unspecified)55 %
- Heat pump22 %
- Heat exchanger (district)6.6 %
- Standard boiler5.5 %
- Condensing boiler5.4 %
- Central electric heating3.2 %
- Direct electric heaters1.3 %
- Stove0.6 %
A standard non-condensing boiler is usually older and less efficient.
Houses or apartment buildings?
- Single-family houses64.9 %
- Two-dwelling houses6.7 %
- Apartment buildings (3+)28.4 %
7.9 % of buildings mix housing with shops or offices.
The typical building
- storeys (median)
- 2
- median footprint
- 117 m²
- median dwelling area
- 92 m²
Renovations, heritage and volumes
For your renovation projects in Bernex, the federal building registry data shows partial coverage. Although the register lists 1611 buildings, specific details regarding renovation years, heritage protection status, and building volumes based on the SIA 416 standard are not currently recorded or available in our system. Due to this lack of specific RegBL figures, property owners should communicate directly with the local municipal authorities to obtain precise information about their property before starting any major work. Early coordination with the municipality ensures that you address all relevant planning requirements and local building regulations for your renovation project.
0
buildings flagged as protected
status known for 35 of 1'611 buildings; check with the municipality
Source : OFS — RegBL (export communal complet). Existing residential buildings; percentages of recorded values.
Companies in the area
SERVICES PLUS ENERGIES SA
1233 Bernex · about 0 km
Geneva-based company specializing in heating, ventilation, and air conditioning, active in energy renovation, solar thermal, and 24/7 maintenance.
spenergies.chAlliance Energie Sàrl
1258 Perly · about 2.8 km
Alliance Energie Sàrl, based in Perly, specializes in the installation, renovation, and repair of sanitary, heating, and ventilation systems.
alliance-energie-sarl.chDEM technologies SA
1213 Petit-Lancy · about 3.5 km
DEM Technologies SA in Petit-Lancy installs and maintains plumbing, electrical, heating, ventilation and air-conditioning systems, as well as heat pumps, solar photovoltaic and solar thermal systems.
dem-technologies.chThermoptimum SA
1212 Grand-Lancy · about 3.9 km
Thermoptimum SA specializes in the installation, maintenance, and repair of heat pumps, solar thermal systems, and heating installations.
thermoptimum.chSuggestions from the commercial register by distance and activity. Not an endorsement or partnership.
Useful local data
Rules of the canton of Geneva
These rules apply across the whole canton, not only in this town.
Permits
- Competent authority : Office de l'urbanisme
- Solar panels : Soumise à autorisation de construire, mais avec une procédure simplifiée si certaines conditions sont remplies (conformité au droit des zones, intégration paysagère et patrimoniale satisfaisante, puissance totale inférieure à 100 kVA). Procédure simplifiée possible par le biais d'une déclaration préalable, si les installations sont sur des toits en pente conformes ou sur des toits plats non visibles, ou dans certains périmètres d'aménagement (zone 4B, 5, 5A, 5B, 6).
- Heat pump : Les pompes à chaleur air-eau ou air-air nécessitent une autorisation de construire si leur puissance dépasse 10 kW. Si elles sont installées à l'intérieur, elles sont soumises à la LCI (Loi sur les constructions et les installations) et non à la LALPT (Loi sur l'aménagement du territoire et les constructions). Pour les pompes à chaleur de puissance inférieure ou égale à 10 kW, une déclaration préalable est nécessaire, accompagnée d'une attestation de conformité acoustique. Des exigences en matière de bruit sont mentionnées pour les installations extérieures, avec des valeurs limites d'immissions fixées par l'Ordonnance sur la protection contre le bruit (OPB) et des règles spécifiques du règlement d'application de la LCI (rLCI). Un bureau spécialisé en acoustique est souvent requis pour les projets complexes.
- Procedure : l'autorisation de construire
Source : Guide Installations Solaires et Thermopompes - Canton de Genève
Other works in Bernex
Kitchen renovationBathroom renovationNew flooringInterior paintingWindow replacementRoof renovationFacade insulationHeat pump installationSolar panelsHome solar batteryTerrace constructionFence installationStairwell renovationElevator installation or upgrade