Solar PV — one-off payment (Neuchâtel)
Based on installed capacity.
Federal one-off payment for PV, applicable in the canton of Neuchâtel.
www.pronovo.chSolar panels · La Chaux-de-Fonds

At a glance
Small project
CHF 8'900 – CHF 16'900
Typical project
CHF 16'500 – CHF 29'900
Large project
CHF 28'500 – CHF 50'700
| Project | Quantity | Low | High | Per unit |
|---|---|---|---|---|
| Small project | 5 kWc | CHF 8'900 | CHF 16'900 | CHF 2'500 |
| Typical project | 10 kWc | CHF 16'500 | CHF 29'900 | CHF 2'300 |
| Large project | 18 kWc | CHF 28'500 | CHF 50'700 | CHF 2'100 |
Computed with our estimator for La Chaux-de-Fonds (regional factor included), standard finish. Only the project size changes.
Included
Not included
In La Chaux-de-Fonds, the federal building register lists 4'535 residential buildings and 22'323 dwellings. These municipal benchmarks help put your home in context, but do not replace an individual assessment.
78 % built before 1980
Construction year does not reveal past renovations: check the current insulation condition.
39 % · Heating oil
This distribution describes recorded buildings, not your system's consumption or efficiency.
| Energy | Heating | Hot water |
|---|---|---|
| Gas | 24 % | 19.3 % |
| Heating oil | 39 % | 30.1 % |
| District heating | 17 % | 15.7 % |
| Heat pump | 9 % | 7.5 % |
| Electricity | 4 % | 16.1 % |
| Wood | 6 % | 2.6 % |
| Solar thermal | 1 % | 7.7 % |
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.
A standard non-condensing boiler is usually older and less efficient.
23 % of buildings mix housing with shops or offices.
When planning renovations in La Chaux-de-Fonds, referencing official RegBL data is vital for accurate budgeting. The median house volume is 835 m3, though this figure covers only 29 of 1731 houses, indicating partial data coverage. Regarding heritage protection, 20 out of 138 known buildings are officially protected. If your property is classified, you must contact municipal authorities early to secure necessary permits before starting construction. Carefully evaluating these specific figures allows you to better understand the scope of your project, helping you anticipate costs and streamline the renovation process for your home in this municipality.
Source : Registre fédéral des bâtiments et des logements (RegBL), OFS, 2026. Existing residential buildings; percentages of recorded values.
3 °C. In this context, optimizing the local building stock to reduce energy needs is crucial. With 3824 heating degree days, the thermal demand remains high.
Undertaking the installation of photovoltaic solar panels is a consistent approach to participate in the energy transition.
The ideal time to install solar panels is often correlated with the repair of your roof or a comprehensive energy renovation. By taking advantage of a project already planned, you reduce scaffolding costs and optimize the overall lifespan of your installation.
Solar production, with a global irradiation estimated at 1304 kWh/m²/year, allows for an interesting valorization of your roof surface, while increasing your household's energy autonomy.
The choice of photovoltaic equipment depends on the orientation and inclination of your roof. With an estimated yield of approximately 1148 kWh/kWp/year for a roof facing south at 30 degrees, your panels' performance is optimal.
You will have to choose between roof-integrated or overlay solutions, each having aesthetic and financial implications. Different ranges of modules exist, from standard versions to high performance for smaller surfaces.
The installation also includes the inverter, a central component that converts direct current into alternating current. Its quality influences the system's durability.
It is advisable to analyze your consumption habits, as profitability strongly depends on the share of electricity consumed on-site.
Storage systems, although optional, can increase this self-consumption by keeping the surplus produced during the day for use at night or during less sunny periods.
La Chaux-de-Fonds possesses a varied architectural heritage requiring special attention.
For older buildings, it is essential to check the condition of the roof structure before any installation, as the weight of solar panels must be supported without structural risk.
Constructions dating from before 1990 may contain asbestos in insulation, making any intervention on the roof more complex and requiring strict precautionary measures during energy renovation work.
The electrical networks of older buildings may also require upgrading to accommodate the inverter and the connection to the meter. Prior expertise helps to identify if your electrical panel is compatible or needs to be adapted.
For recent buildings, thermal insulation is generally efficient, but care must be taken to ensure that the installation of panels does not compromise the air and water tightness of the roof, thus ensuring the longevity of your investment against our region's harsh climate.
For 'sufficiently adapted' installations placed on a roof, within the building zone and outside protected zones or objects, a simple notification to the competent authority is sufficient. This procedure replaces the classic building permit.
In general, about twenty days before the start of work are required for this notification.
It is, however, essential to check if your property is located in a protected area or if it is a listed object, as particular constraints may apply, especially in ISOS perimeters with protection goal A.
Before incurring any expenses, contact the town's urban planning services.
They will confirm if your project falls into the category of installations subject to simple notification or if it requires a more formal permit application due to the heritage value of your building.
Compliance with these formalities guarantees the conformity of your project and avoids any administrative blockage during the project.
This is a direct aid accessible throughout the canton of Neuchâtel. Remember to check the eligibility of your project before starting any work, as the application must imperatively precede the start of the project.
Furthermore, the municipal energy fund can provide financial support under certain conditions, particularly for the renovation of energy-intensive buildings.
Regarding taxation, investments aimed at saving energy are deductible from your income. If these expenses cannot be deducted in full in the year they are invoiced, they can be carried forward to the two following tax years.
Note, however, that this deduction cannot be combined with the flat-rate deduction for maintenance costs. The tax authority will determine the carry-forward amounts.
This intelligent management of your taxation can significantly improve the return on investment of your photovoltaic installation.
The unfolding of a photovoltaic project follows a structured logic. The first step consists of the technical analysis and the application for financial aid, which must imperatively precede any start of work.
Once the authorizations are received and the material ordered, the project can begin. It is preferable to favor frost-free periods to carry out the roofing work in complete safety.
Although installers are accustomed to the local climate, the harsh winter conditions in La Chaux-de-Fonds can influence the teams' schedule.
Once the structure is installed, the modules are fixed and the electrical connection is carried out. The final step is the commissioning of the system after inspection of the installations by a certified body.
This process ensures that your installation complies with the safety standards in force.
By anticipating administrative and logistical deadlines, you ensure a smooth transition to your new energy source, while quickly benefiting from your first kilowatt-hours produced locally on your roof.
Before requesting quotes, check that your roof is in good condition. It is useless to install panels on a structure that needs to be changed soon. Do not neglect the analysis of your actual consumption to properly dimension the installation.
Avoid signing an order before having received confirmation of eligibility for financial aid. Systematically check the heritage perimeter of your building. Ask for several comparable quotes including all connection and commissioning costs.
Ensure that the selected company is certified for this type of work.
The basic checklist includes : check roof orientation and shading, solicit a global energy diagnosis, compare inverter and panel warranties, and ensure compliance with municipal notification rules.
An installation on a sufficiently adapted roof is often subject to simple notification, do not forget it. Profitability depends above all on the share of electricity consumed on-site, so optimize your habits.
Finally, provide simple and secure access for the future maintenance of your solar equipment.
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.
Based on installed capacity.
Federal one-off payment for PV, applicable in the canton of Neuchâtel.
www.pronovo.chCheck amounts and conditions with the provider before signing: apply before work starts in most cases.
2300 La Chaux-de-Fonds · about 0 km
Schneider Electricité S.A., based in La Chaux-de-Fonds, installs and maintains electrical systems and provides telematics, home automation and photovoltaic services.
schneider-electricitesa.ch2300 La Chaux-de-Fonds · about 0 km
Minerba SA is a family business in La Chaux-de-Fonds providing roofing, sheet metal work and waterproofing, as well as solar tile roofs.
minerba.ch2300 La Chaux-de-Fonds · about 0 km
Electricité des Hêtres SA, based in La Chaux-de-Fonds, installs and repairs electrical systems and offers photovoltaic installations, home automation and security systems.
ehetres.ch2300 La Chaux-de-Fonds · about 0 km
The company mgiorgio Sàrl specializes in electrical installations, home automation, and photovoltaic solutions for private and industrial clients.
giorgio-electricite.chSuggestions from the commercial register by distance and activity. Not an endorsement or partnership.
For 'sufficiently adapted' solar installations on roofs, a simple notification to the competent authority is generally sufficient. This replaces the classic building permit if your building is not protected.
Modern photovoltaic panels have an average lifespan of 25 to 30 years. They continue to produce electricity beyond that, although their efficiency may decrease slightly.
No, aid applications such as the single remuneration must be submitted before work begins. No aid is paid for installations that are already completed.
It is technically possible, but the yield will be significantly lower than that of a south-facing roof. A profitability study is highly recommended before any decision.
Yes, investments aimed at saving energy are tax-deductible. If you cannot deduct everything in one year, the balance is carry-forwardable for two years.
The harsh climate requires robust installations, but the panels produce electricity even in cold weather. Snow generally slides well off inclined glass surfaces.
Profitability mainly depends on your self-consumption rate. Use your energy-intensive appliances during hours of maximum sunshine.
Estimated solar yield
1'148 kWh/kWc/an
toit ~30° sud, PR 0.8, estimation
Altitude
990 m
Heating degree days
3'824 Kj/an
20/12 °C
Frost days
100 jours/an
Solar irradiation
1'304 kWh/m²/an
horizontal
Winter design temperature
-10.3 °C
1er percentile des minimales
Mean temperature
8.3 °C
Source : Open-Meteo Historical Weather API (réanalyse ERA5, moyenne 2015-2024) · swisstopo – service d'altitude (MNT)
Source : Ville de La Chaux-de-Fonds
Source : Ville de La Chaux-de-Fonds
These rules apply across the whole canton, not only in this town.
Permits
Source : azprojet.ch
Tax deductions
Source : SCCO_I772_Notice4_PP.pdf