Free simulator · 2 minutes

What your car park could generate, and what doing nothing costs you.

APER obligation, installable power, savings, investment and a comparison of four financing models. Instant orders of magnitude, to be refined with our engineering team.

Installable power—

Annual generation—

Savings + revenue / yr—

Estimated investment—

Payback—

Net cumulative gain over 20 years—

Cumulative cash flow over 20 years

Compare financing models

Model	Upfront	Net flow year 1	Net gain 20 yrs	Best for

And with SUUN?Principle estimate

Conventional steel carport—columns and foundations (≈ 1 per 120 m² covered)

SUUN, 30 m between supports—supports and foundations (≈ 1 per 500 m² covered)

Fewer supports mean fewer foundations, fewer site risks and more free spaces. The actual number of supports depends on your parking layout.

Get your detailed study.

Precise yield, layout, costing and financing plan for your site.

Start a project White paper (FR)

French regulatory framework, checked on 29 September 2026 (have it confirmed by your adviser): article 40 of law no. 2023-175 (APER), decree no. 2024-1023, law of 26 November 2025 and decree no. 2026-842. Existing outdoor car parks above 1,500 m²: at least 50% of the area shaded, by 1 July 2026 above 10,000 m² and by 1 July 2028 between 1,500 and 10,000 m²; mixed solution allowed (at least 35% of that half in PV); exemptions and conditional extensions; fines up to €20,000 or €40,000 per year. Economic assumptions are indicative and editable; module degradation 0.4%/yr, 20-year horizon. This simulator does not replace a feasibility study or a quote.