Solar panels · La Chaux-de-Fonds

Photovoltaic Solar Panels in La Chaux-de-Fonds

The energy transition is becoming a concrete reality for homeowners in La Chaux-de-Fonds. This guide accompanies you through the key steps of your solar project, taking into account the climatic and regulatory specificities of our region.
Solar panels – La Chaux-de-Fonds

Worked examples in La Chaux-de-Fonds

Small project

CHF 8'900 – CHF 16'900

Typical project

CHF 16'500 – CHF 29'900

Large project

CHF 28'500 – CHF 50'700

Computed with our estimator for La Chaux-de-Fonds (regional factor included), standard finish. Only the project size changes.

Cost split (typical project)

  • Labour : CHF 7'900 (35 %)
  • Materials : CHF 12'400 (55 %)
  • Other costs : CHF 2'300 (10 %)

Why and when to undertake these works in La Chaux-de-Fonds

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.

Technical choices that vary the project

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.

Specifics of the local building stock according to the construction era

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.

Authorizations, rules and heritage in La Chaux-de-Fonds

In the canton of Neuchâtel, the procedure for installing solar panels is simplified. 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.

Financial aid and taxation

The financing strategy for your solar project relies on several levers. The federal single remuneration, managed by Pronovo, helps reduce the initial investment according to the power of your installation. 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.

Calendar: typical project schedule

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.

Frequent errors to avoid and checklist before requesting quotes

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.

Grants and subsidies

Canton

Solar PV — one-off payment (Neuchâtel)

Based on installed capacity.

Federal one-off payment for PV, applicable in the canton of Neuchâtel.

www.pronovo.ch

Check amounts and conditions with the provider before signing: apply before work starts in most cases.

Companies in the area

Minerba S.A.

2300 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.ch

Electricité des Hêtres S.A.

2300 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.ch

Schneider Electricité S.A.

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.ch

mgiorgio Sàrl

2300 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.ch

Suggestions from the commercial register by distance and activity. Not an endorsement or partnership.

Frequently asked questions

Do I need a full building permit?

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.

What is the lifespan of solar panels?

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.

Is financial aid retroactive?

No, aid applications such as the single remuneration must be submitted before work begins. No aid is paid for installations that are already completed.

Can panels be installed on a north-facing roof?

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.

Are installation costs tax deductible?

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.

Is the climate in La Chaux-de-Fonds an obstacle?

The harsh climate requires robust installations, but the panels produce electricity even in cold weather. Snow generally slides well off inclined glass surfaces.

How can I increase my profitability?

Profitability mainly depends on your self-consumption rate. Use your energy-intensive appliances during hours of maximum sunshine.

Useful local data

Estimated solar yield — 1'148 kWh/kWc/an (toit ~30° sud, PR 0.8, estimation)

Source : Open-Meteo Historical Weather API (réanalyse ERA5, moyenne 2015-2024) · estimate

Altitude — 990 m

Source : swisstopo – service d'altitude (MNT)

Heating degree days — 3'824 Kj/an (20/12 °C)

Source : Open-Meteo Historical Weather API (réanalyse ERA5, moyenne 2015-2024)

Frost days — 100 jours/an

Source : Open-Meteo Historical Weather API (réanalyse ERA5, moyenne 2015-2024)

Solar irradiation — 1'304 kWh/m²/an (horizontal)

Source : Open-Meteo Historical Weather API (réanalyse ERA5, moyenne 2015-2024)

Winter design temperature — -10.3 °C (1er percentile des minimales)

Source : Open-Meteo Historical Weather API (réanalyse ERA5, moyenne 2015-2024)

Mean temperature — 8.3 °C

Source : Open-Meteo Historical Weather API (réanalyse ERA5, moyenne 2015-2024)

Energy policy

  • Note : L’arrêté affecte au moins 60% du produit net de la redevance et au minimum CHF 400 000 par an aux mesures prévues. Il décrit notamment un soutien sous conditions à la rénovation de bâtiments énergivores ; vérifier l’éligibilité et la disponibilité, ce n’est pas un montant par propriétaire.
  • Programme : Fonds communal de l’énergie
  • Minimum amount : 400000

Source : Ville de La Chaux-de-Fonds

Heritage

  • Solar / facade constraints : La commune distingue les installations soumises à permis, notamment pour des biens culturels protégés et certains périmètres ISOS avec objectif de sauvegarde A. Vérifier l’objet et le périmètre avant travaux.

Source : Ville de La Chaux-de-Fonds

PermitsCanton

  • Competent authority : autorité communale ou cantonale compétente (pour l'annonce solaire)
  • Typical delay : environ 20 jours (pour les installations solaires soumises à annonce)
  • Solar panels : La procédure d'annonce remplace déjà le permis de construire classique pour les installations solaires 'suffisamment adaptées' posées sur un toit, dans la zone à bâtir et hors des zones ou objets protégés définis par le droit cantonal. Une simple annonce à l'autorité communale ou cantonale compétente suffit, en général une vingtaine de jours avant le début des travaux.

Source : azprojet.ch

Tax deductionsCanton

  • Carry-forward : Seule la part des frais d'investissement destinés à économiser l'énergie et à ménager l'environnement ainsi que les frais de démolition en vue d'une construction de remplacement, qui n'a pas pu être déduite l'année de facturation (année N) car elle aurait engendré un revenu net négatif, peut être reportée sur les deux années fiscales suivantes (N+1 et N+2). Ces frais doivent avoir été intégralement déclarés l'année de leur facturation. Si des frais sont reportés, la déduction forfaitaire n'est pas possible pour l'immeuble concerné pour la période fiscale correspondante. Le droit de reporter est réservé au propriétaire ayant supporté les frais. L'Intendance des impôts détermine d'office les frais reportables.
  • Flat rate deduction : 10% du rendement brut des loyers ou de la valeur locative (max. 7 200 CHF) si l'âge du bâtiment est inférieur ou égal à dix ans; 20% du rendement brut des loyers ou de la valeur locative (max. 12 000 CHF) si l'âge du bâtiment est supérieur à dix ans. Aucune autre déduction supplémentaire n'est possible avec le forfait. Les propriétaires d'immeubles commerciaux affectés à leur activité indépendante ne peuvent pas opter pour la déduction forfaitaire pour ces immeubles, mais c'est possible pour d'autres immeubles de leur fortune privée.
  • Maintenance costs : Le/la contribuable peut choisir, lors de chaque période fiscale et pour chaque immeuble, entre la déduction des frais effectifs et la déduction forfaitaire. Les frais effectifs déductibles sont ceux visant à maintenir la valeur de l'immeuble, facturés durant l'année de calcul. Si les dépenses comportent des dépenses d’entretien, d’amélioration et/ou d’économies d’énergie, une répartition par nature est nécessaire selon un catalogue de répartition.
  • Energy investments : Les investissements destinés à économiser l’énergie et à ménager l’environnement (remplacement d'éléments vétustes ou adjonction d'éléments/installations dans les bâtiments existants) sont déductibles. Ces frais peuvent être reportés sur les deux années fiscales suivantes s'ils n'ont pas pu être déduits intégralement l'année de facturation (N, N+1, N+2).

Source : SCCO_I772_Notice4_PP.pdf

Other works in La Chaux-de-Fonds

Solar panels in nearby towns