Tidal’s Hybrid-Electric Polaris Seaplane Consumes 85% Less Fuel

Hybrid cars are already taking over the automotive industry, and it’s easy to see why. They consume less fuel, without sacrificing performance, and crucially produce less greenhouse gases. Now, hybrid-electric powertrains are also becoming more prominent in the aviation industry, particularly for seaplanes. They are seen as a stopgap to fully electric and hydrogen-electric aircraft but also have an immediate effect on lowering CO2 emissions; the international aviation industry, for example, was responsible for 492 million metric tons of CO2 emissions in 2023.

The Tidal Polaris will soon add to the growing number of hybrid-electric seaplanes while promising some staggering fuel-efficiency gains. It’s a seaplane that can carry between 9 to 12 passengers and their cargo. However, the Polaris is a true amphibian aircraft, meaning it can also land on traditional runways. Its fuselage is made from composite materials and has a wingspan of 18m (59 ft).

The seaplane was introduced by Tidal Flight and Tropic Ocean Airways, which formed an agreement to introduce hybrid-electric seaplanes to Florida and the Bahamas. The partnership, revealed at the Future Opportunities for Seaplanes and Amphibious Aviation 2025 (FOSAA25) Conference, includes a Letter of Intent (LOI) for 20 Polaris Amphibian aircraft valued at over $100 million.

The big upside of the Polaris hybrid seaplane is its fuel economy; designed by aerospace engineers from Georgia Tech and BETA Technologies, Polaris is set to revolutionize seaplane travel by consuming 85% less fuel than a regular aircraft. The hybrid engine is a combination of a fuel-burning engine, generator, and battery system, powering two low-tip propellers.

 Tidal says the Polaris has a cruising speed of 186 mph (300 km/h) at an altitude of 7,000 ft (2130 m), and a range of 1,034 nautical miles with 2,200 pounds (1,000 kg) of payload. Speaking of which, the Polaris has a maximum take-off weight of 12,500 pounds (5,670 kg). Tidal also promises up to 20dB quieter take-off and landing, without any penalty on payload or performance. Crucially for operators, the Polaris has lower maintenance costs by reducing corrosion-related wear.

“Tidal’s quiet, comfortable, hybrid-electric aircraft helps us deliver on our sustainability goals while offering a superior product to our customers without compromising on range, payload, or cruise speed. Polaris brings a legitimate improvement to our revenue generation capability and reduction in operating costs, rather than compromising on the business case to accommodate electrification”, said Rob Ceravolo, Tropic Ocean Airways and its Founder & CEO.

Image source by Tidal Flight