Electric cars continue to gain ground, but autonomy remains a critical issue. DartSolar, an American start-up, has developed a curious solution: a system of retractable solar panels to be mounted on the roof of vehicles. The idea? Add up to 32km of range per day using clean energy, without needing to stop at a charging station.
The photovoltaic roof rack
Anyone who drives an electric car knows: finding a charging station can turn into a treasure hunt, especially outside the city. DartSolar has thought of a simple but effective solution: a portable system, a real photovoltaic package rack that adapts to any electric vehicle, not just the famous Tesla ones. The idea isn’t exactly new, but the founder, Omid Sadeghpour, has refined it into a commercial product.
The six light and resistant fiberglass panels can be easily assembled, resist atmospheric agents thanks to the ETFE coating and, even when folded, continue to produce energy. The result? Up to 360 watts of power on the go and 960 watts at full capacity, enough to cover small daily distances without resorting to the electricity grid. The whole thing weighs just 41 kg and can even withstand a small additional load, for example when camping.
How much energy can you really save?
The system does not replace the charging network, but offers concrete help. With its 32 km per day of additional autonomy, it allows you to reduce the frequency of stops at charging stations, lightening not only your wallet, but also your environmental footprint. Of course, it is a product designed for those who live in sunny areas or travel short journeys: more of a support than a permanent solution.
The system has a price of around 2,800 euros, an investment that DartSolar promises will pay off over time. Maintenance is simplified by the use of 3D printable parts, making it repairable without great expense. The company estimates a product life of around ten years, but it remains to be seen how the market will react. Ultimately, a question arises spontaneously: is it really worth relying on a solar roof? Or is it just a temporary solution while waiting for better performing batteries?
