Cantonal information · Last updated September 2026
Solar panels in Nidwalden: on-site electricity requirement and 2026 grants
Nidwalden has a clearly calculable on-site electricity requirement and, subject to certain conditions, links energy-efficient building renovations to additional support involving solar PV.
The on-site electricity rule is based on newly created energy reference area (ERA). Renovation funding is separate: CHF 120/m² applies to a funded thermally insulated building component combined with full-surface PV, not to the PV area itself.
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The 10 W/m² rule in three steps
The starting point for the on-site electricity requirement is the newly created energy reference area (ERA). The calculation can be set out in three clear steps.
The 10 W/m² rule in three steps
New ERA × 10 W/m² → resulting output → 30 kW cap.
- Step 1New ERA × 10 W/m²
1. Newly created ERA
The project’s newly created energy reference area is decisive.
The statutory requirement is at least 10 W of output per m² of newly created ERA.
Sources: 1 - Step 2ERA × 10 W/m²
2. Resulting output
The area determines the minimum output that must be provided under the on-site electricity requirement.
The calculation combines the newly created ERA with the minimum figure of 10 W/m².
Sources: 1 - Step 3No more than 30 kW
3. Apply the cap
No more than 30 kW must be provided under this requirement.
The cap is part of the on-site electricity requirement.
Sources: 1
Compare quotes on the same basis
The most useful comparison: several quotes for the same project.
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Treat the building envelope and PV separately
The building-envelope contribution applies to the funded thermally insulated building component, not the PV area. Combining it with full-surface PV can increase the rate under the programme.
CHF 60/m² or CHF 120/m²?
The decisive point is whether the PV meets the programme’s definition of “full-surface”.
CHF 60/m² for the funded thermally insulated component
CHF 120/m² for the funded thermally insulated component combined with PVSources: 2
Building-envelope contribution without the higher combined rate
PV covering 20% of the façade or 50% of the flat or pitched roofSources: 2
Contribution for the insulated component, not the PV area
Not a general PV grant; standard PV installations are generally supported by the Swiss federal government.Sources: 2
Notification form for solar installations
The Canton of Nidwalden provides an updated BK solar-installation notification form. Use the cantonal template for project-specific details and clarify any special questions with the competent authority before implementation.
Sources: 3Cost factors for your project
Costs depend on project size and construction conditions. Compare quotes only if they show the same work and the same required output.
- required output based on the newly created ERA
- roof area and geometry
- installation, scaffolding and accessibility
- electrical work and distribution
- battery storage
- coordination with roof or façade insulation
When solar is combined with insulation work, a clear breakdown is worthwhile: which item relates to the building envelope, which to the solar installation and which to both trades? In particular, ensure scaffolding and ancillary work are allocated transparently. The higher building-envelope contribution is no reason to compare every cost on the shared site as a PV cost.
Ask providers to state the energy reference area used and the output derived from it in their quote. A separate price item helps if a battery is added. You can then compare an option without storage using the same PV installation and see whether price differences arise from sizing or additional work.
With PvPro.ch, owners can compare up to three no-obligation solar quotes on a consistent project basis.
Solar project in Nidwalden
Map and guidance for your solar project in Nidwalden.
Frequently asked questions
- How is the on-site electricity requirement calculated in Nidwalden?
- At least 10 W of output per m² of newly created energy reference area is required. Sources: 1
- Is the requirement capped?
- Yes. No more than 30 kW must be provided under this requirement. Sources: 1
- What happens if the required output is not installed?
- Cantonal law provides for a replacement levy of CHF 1’000 per kW of required output that is not installed. Sources: 1
- Does Nidwalden pay CHF 120/m² for every PV installation?
- No. CHF 120/m² applies to a funded thermally insulated building component combined with a PV installation that meets the programme’s definition of full-surface; standard PV installations are generally supported by the Swiss federal government. Sources: 2
- When must an application for building-renovation funding be submitted?
- The application must generally be submitted before construction starts; cantonal contributions are also subject to the programme’s conditions and available funding. Sources: 2
Plan your solar project in concrete terms
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Sources and last update
Last updated: 15 September 2026
- Canton of NidwaldenNG 641.1 – Act on the economical use of energyOfficial source
- Canton of Nidwalden2026 energy funding programmeOfficial source
- Canton of NidwaldenBK notification form for solar installations | Canton of Nidwalden onlineOfficial source