With a solar carport, you pay for two things: the solar system and – considerably more significant – the structure underneath it. The supporting structure is the biggest cost block, because a carport is a foundation plus a construction that has to bear wind and snow loads. Purely as a roof area for modules, the solar carport is expensive; as a combination of shelter, solar system and EV charging station, on the other hand, it delivers real multiple benefits – and that's when the calculation gets interesting. (As of July 2026)
Key points in brief
- The biggest cost block is the supporting structure, not the solar system – a carport is a structure.
- As a pure area for modules, the solar carport is more expensive than the same output on the house roof.
- The added value comes from the combination: shelter plus solar power plus charging station.
- Foundation, structural engineering (wind/snow) and a building permit are part of the project.
- Anyone who wants to shelter and charge the car anyway gets several benefits from the carport at once.
What does a solar carport's cost consist of?
From two parts that should be cleanly separated: the solar system and the structure. The solar system – modules, inverter, cabling – works like on any roof, and its price per kilowatt peak follows the same rules as a home system, covered under Cost per kWp.
The more significant and often underestimated part is the supporting structure. A carport isn't a rack, but a structure: it needs foundations, a construction of wood or steel, and this has to safely bear wind and snow loads – the same structural questions as with any shelter roof. This is exactly where the main cost block lies, and it's the reason a solar carport turns out more expensive per kilowatt peak than the same system on an existing roof: with a house roof, the supporting structure is already there; with a carport, you build it from scratch.
So why is a solar carport worth it at all?
Because you rarely buy just a module area, but several benefits at once: a covered parking space, solar power and – often the real trigger – an EV charging station right where the vehicle is parked. The combination of carport, PV and charging point is the setup in which the calculation works out; the article Solar carport with charging station describes this interplay in detail.
The mistake would be to see the carport only as an expensive roof area. For anyone who wanted to build the shelter anyway, the solar system on top of it is a logical addition rather than a surcharge – you're then paying for the supporting structure for the parking space, and the modules turn the roof into a power source. In this logic, the solar carport doesn't compete with the house roof, but complements it: sensible above all where the house roof is full, poorly oriented or unavailable. The same calculation applies to the solar pergola over the terrace, where the construction is likewise decisive.
| Situation | Assessment |
|---|---|
| Just looking for module area, house roof available | House roof cheaper – carport rarely necessary |
| Parking space is being covered anyway | The carport structure is needed anyway – PV is worth it |
| Charging the EV at the parking space | strong combination: shelter + power + charging point |
| House roof full or unsuitable | Carport as additional area makes sense |
Simplified overview, as of July 2026. Costs depend heavily on size, material and foundation – the individual quote is decisive.
What else belongs to the project?
Three things to factor in from the start. First, the building permit: a carport is a structure and usually requires a permit – unlike a pure roof system under the notification procedure. Zone, boundary clearances and design need to be clarified before the foundation goes in.
Second, structural engineering: wind and snow loads aren't a side issue for a free-standing shelter roof, but central – the construction and the mounting or support system have to be designed for it. Third, the electrics: the route from the carport to the service connection and integrating the charging station are skilled work and a real cost item, especially if the parking space is some distance from the house.
Anyone who clarifies these three points early avoids the typical surprise that the carport ends up needing more planning than the solar system itself – which is because it's exactly both: a structure and a power plant.
With a solar carport, in the initial consultation we always separate the two calculations first: what does the structure cost, what does the system cost? Because otherwise the disappointment arises at the same point every time – someone compares the solar carport with a house-roof system of the same output and is surprised by the price. The difference is the shelter, which they already have with the house roof and build from scratch with the carport. But as soon as the EV comes into play and the parking space is being covered anyway, the assessment flips: then the solar system is the cheap part of the project, and the carport pays off triply – protection, power and a charging point in the same place.
Frequently asked questions
Is a solar carport more expensive than a system on the house roof?
Per kilowatt peak, yes, because with a carport the supporting structure is built from scratch, whereas with a house roof it's already there. But the comparison is unfair if you factor in the covered parking space: for anyone who wanted that anyway, the solar system on top of it is a cheap addition rather than a surcharge.
What's the biggest cost block for a solar carport?
The supporting structure – foundation and construction. A carport has to bear wind and snow loads and is therefore a structure, not just a rack for modules. The solar system itself follows the same pricing rules as on a roof; the difference in the total price comes almost entirely from the structure underneath.
Do I need a building permit for a solar carport?
As a rule, yes. A carport is a structure and usually requires a permit – unlike a pure roof system, which often runs under the notification procedure. Boundary clearances, zone and design need to be clarified before construction. That's one reason why the carport often needs more planning than the system on top of it.
Is a solar carport with a charging station worth it?
That's the strongest setup. The parking space gets covered, the modules deliver power, and the EV charges right on the spot – ideally with your own solar power. Anyone who wanted all three benefits together gets multiple value out of one structure. The article on the solar carport with charging station goes into this interplay.
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Sources: Empirical values from ecoEn GmbH's carport and charging projects (Zurich region), Swissolar expert information, cantonal building regulations, mounting system manufacturer specifications.
Last updated: 9 July 2026 · Author: ecoEn editorial team
