Canton
Solar thermal — Buildings Programme (VD)
Flat contribution or per m² of collectors.
Grants for solar thermal systems (hot water, heating support).
www.leprogrammebatiments.chSolar water heating · Saint-Sulpice
Solar water heating in Saint-Sulpice
Indicative price, tips, grants and companies for your project in Saint-Sulpice (Vaud).
At a glance
- Typical budget
- CHF 13'000 – CHF 30'200
- Midpoint
- CHF 20'900
- Grants found
- 1
- Nearby companies
- 4
Worked examples in Saint-Sulpice
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 Saint-Sulpice (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.
Saint-Sulpice's housing stock in figures
The federal building register lists 664 residential buildings with 2'639 dwellings in Saint-Sulpice. 55% were built before 1980, before serious insulation standards, and 66% are still heated with oil or gas.
Only 19.9% of residential buildings in Saint-Sulpice 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 19196 %
- 1919–194513 %
- 1946–196012 %
- 1961–197012 %
- 1971–198012 %
- 1981–199010 %
- 1991–20005 %
- 2001–20106 %
- Since 201124 %
Main heating energy
- Gas44 %
- Heat pump27 %
- Heating oil22 %
- Electricity4 %
- Wood2 %
- District heating1 %
Heating and hot water: which energies?
| Energy | Heating | Hot water |
|---|---|---|
| Gas | 44 % | 40 % |
| Heating oil | 22 % | 23.7 % |
| District heating | 1 % | 0.2 % |
| Heat pump | 27 % | 10.3 % |
| Electricity | 4 % | 8 % |
| Wood | 2 % | 1 % |
| Solar thermal | 0 % | 16.4 % |
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)48.4 %
- Heat pump27.4 %
- Condensing boiler12.6 %
- Standard boiler6.1 %
- Central electric heating3.6 %
- Heat exchanger (district)0.6 %
- Stove0.6 %
A standard non-condensing boiler is usually older and less efficient.
Houses or apartment buildings?
- Single-family houses51.4 %
- Two-dwelling houses14.6 %
- Apartment buildings (3+)33.9 %
- Other0.2 %
10.5 % of buildings mix housing with shops or offices.
The typical building
- storeys (median)
- 3
- median footprint
- 146 m²
- median dwelling area
- 87 m²
Renovations, heritage and volumes
For renovation planning in Saint-Sulpice, official building register figures provide essential insights. With one building formally listed under heritage protection, property owners must contact the municipality early to understand specific permit requirements. Regarding building volume, data is partial, covering only 113 out of 341 houses measured according to the SIA 416 standard. For these properties, the median volume is 1068 cubic meters, which serves as a key indicator for scaling insulation improvements or heating system upgrades. Please note that these figures represent a limited portion of the total housing stock currently recorded in the register.
1
buildings flagged as protected
status known for 61 of 664 buildings; check with the municipality
1'068 m³
median house volume (SIA 416)
measured for 113 of 341 houses
Source : OFS — RegBL (export communal complet). Existing residential buildings; percentages of recorded values.
Companies in the area
IPSA Isolations SA
1024 Ecublens VD · about 4.8 km
Specialist in technical insulation for heating, plumbing, and ventilation systems, providing thermal, acoustic, and fire protection solutions.
ipsa-isolations.chB.C.S Energie Sàrl
1131 Tolochenaz · about 5.4 km
A group of companies specializing in sanitary installations, heating systems (heat pumps, gas, solar), tinsmithing, and waterproofing.
csenergie.chID GO Management SA
1110 Morges · about 5.6 km
ID GO Management is a global energy renovation company specializing in decarbonization, planning, and the execution of sustainable building projects.
afco-management.chDOLEFAR SA
1026 Denges · about 5.7 km
DOLEFAR SA, based in Denges, installs and maintains heating, solar PV, solar thermal and plumbing systems in French-speaking Switzerland, with tiling also listed in its registered business purpose.
dolefar.comSuggestions from the commercial register by distance and activity. Not an endorsement or partnership.
Useful local data
Rules of the canton of Vaud
These rules apply across the whole canton, not only in this town.
Permits
- Legal basis : LATC et RLATC (BLV 700.11 et 700.11.1)
- Competent authority : Commune concernée, avec consultation des services cantonaux selon le projet
- Heat pump : Pour certaines pompes à chaleur desservant un bâtiment existant, une procédure d’annonce est prévue par l’article 68c RLATC, sous conditions. Si les conditions ne sont pas remplies, une procédure de permis de construire est nécessaire. Vérifiez votre cas auprès de la commune.
- Procedure : La procédure dépend de la nature des travaux et de la situation du bâtiment ; la commune confirme la procédure applicable.
Tax deductions
- Note : Le contribuable peut choisir, lors de chaque période fiscale et pour chaque immeuble, entre la déduction des frais effectifs et la déduction forfaitaire. La déduction forfaitaire couvre les frais d'entretien, de remise en état d'immeubles acquis récemment, d'administration par des tiers, d'investissements énergétiques, de démolition et de primes d'assurances.
- Carry-forward : Si les coûts d'investissement destinés à économiser l'énergie et à ménager l'environnement ou les frais de démolition en vue d'une construction de remplacement ne peuvent pas être entièrement pris en considération fiscalement durant l'année où ils ont été engagés, le solde peut être reporté sur les deux périodes fiscales suivantes. Les dépenses peuvent être reportées si le revenu net est négatif. Si des frais sont reportés, il n'est pas possible de faire valoir une déduction forfaitaire pendant cette période fiscale. En cas de déménagement en Suisse ou de transfert de la propriété de l'immeuble, le contribuable conserve le droit de déduire le solde des frais pouvant être reportés.
- Maintenance costs : Le contribuable qui possède des immeubles privés peut déduire les frais nécessaires à leur entretien, les primes d'assurances relatives à ces immeubles et les frais d'administration par des tiers.
- Energy investments : Sont réputés investissements destinés à économiser l'énergie et à ménager l'environnement les frais encourus en vue de rationaliser la consommation d'énergie ou de recourir aux énergies renouvelables. Ces investissements concernent le remplacement d'éléments de construction ou d'installations vétustes et l'adjonction d'éléments de construction ou d'installations dans des bâtiments existants. Si les mesures sont subventionnées par la collectivité publique, le contribuable ne peut déduire que les frais qu'il assume lui-même. Le taux de déduction est de 100%.
Source : Règlement sur la déduction des frais relatifs aux immeubles privés (RDFIP)
Other works in Saint-Sulpice
Kitchen renovationBathroom renovationNew flooringInterior paintingWindow replacementRoof renovationFacade insulationHeat pump installationSolar panelsHome solar batteryTerrace constructionFence installationStairwell renovationElevator installation or upgrade