Swedish e-boat maker Candela, in partnership with Northvolt and Plug, successfully completed a long-distance challenge to showcase the viability of electric boating in the marine transport sector. The latest C-8 Polestar Powered prototype traveled 420 nautical miles over a 24-hour period. According to Candela founder and CEO Gustav Hasselskog, this achievement proves that fast, electric waterborne transport over long distances is feasible in the present, rather than being a distant future aspiration.
The C-8 boasts hydrofoiling technology, allowing it to ride above the water and provide a smooth and energy-efficient journey. The boat, launched in 2021, features a 69-kWh battery bank and DC fast-charging capabilities, similar to those found in the Polestar 2 electric car, thanks to the collaboration between Candela and luxury EV brand Polestar.
Candela
Candela collaborated with battery manufacturer Northvolt and charging station supplier Plug for the endurance challenge. The circuit covered a distance of 20 nautical miles between Frihamnen and the island of Tynningö in the Stockholm archipelago. The C-8 prototype achieved a top speed of 27 knots but traveled at an average speed of 17 knots throughout the challenge due to charging breaks.
The electric boat made 17 stops at the Plug DC charger situated outside Candela’s office, which was connected to Northvolt’s Voltpack modular battery system. Each 18-minute top-up, provided at an average power of 118 kW, increased the battery capacity from around 13% to 66%. Candela stated that utilizing battery systems like Voltpack for fast charging could be a cost-effective and efficient solution for islands instead of investing heavily in grid infrastructure upgrades.
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