If you've seen someone gliding silently across the water, hovering a foot or two above the surface with no waves and no boat in sight, you've seen an eFoil in action. We invented the original eFoil here at Lift Foils back in 2015 and launched the first commercial model in 2018. eFoiling looks like something that shouldn't be possible. Once you understand how it works, it makes complete sense.
This guide covers exactly what an eFoil is, how the technology works, and what conditions are best for riding one.
Foil vs. eFoil
Before we get into how an eFoil works, it helps to understand the difference between a foil and an eFoil. A foil, short for hydrofoil, is an underwater wing system that generates lift as it moves through water. Traditionally, foils have no motor; they rely on the rider generating speed through waves, wind, or being towed.
An eFoil takes that same foil system and adds a lithium-ion battery and a motorized propulsion system integrated directly into the foil mast. That's the key distinction: self-contained electric power, no external conditions required.
Key Takeaways
- An eFoil is an electric hydrofoil board powered by a rechargeable lithium-ion battery and a motorized propulsion system integrated into the foil mast.
- Unlike a traditional foil that relies on waves or wind for speed, an eFoil generates thrust through electric propulsion. That thrust creates the velocity needed for the foil to generate lift and raise the board above the surface.
- The rider controls speed using a wireless handheld remote, which controls the motor and in turn how much lift the foil generates.
- eFoils work across a wide range of water conditions. Flat water is the easiest place to learn, but once the foil is engaged you can also use the power of waves and current.
- The learning curve is shorter than most people expect, and the experience is unlike anything else in water sports.
What Is an eFoil?
An eFoil, short for electric foil board, is an electric hydrofoil board that uses a motorized underwater propulsion system to generate the speed needed for the foil to actuate. The foil, which acts like an underwater plane, creates lift as it reaches speed, raising the board above the surface. It's not the motor doing the lifting; it's the thrust and velocity produced by the propulsion unit that allows the foil to do its job, the same principle of Bernoulli's Law that allows a plane's wings to generate lift.
Unlike traditional water sports that rely on waves, wind, or being towed, an eFoil is completely self-powered. The electric power comes from a rechargeable battery built into the board. The speed is managed through a wireless handheld remote that the rider holds while standing. There's no noise, no fuel, no dependency on conditions.
It's one of the most genuinely new sensations in water sports, and it's far more accessible than it looks.
How Does an eFoil Work?
The system has five main components working together: the board, the mast, the foil, the propulsion unit, and the wireless remote.
The board sits on the surface at rest. It's buoyant enough to support the rider while stationary and during takeoff, but once you're flying, it's above the surface.
The mast connects the board to the foil below. It's typically a carbon fiber or aluminum strut around 24 to 32 inches long, providing the structural link between the board above and the foil working underwater.
The foil is the key component and consists of two parts: the front wing and the back wing. The front wing is larger and generates the lift. The back wing, or stabilizer, controls pitch and stability during flight. Together, front wing and back wing make up the foil. Shaped like an underwater plane, the foil sits horizontally beneath the mast. As the board gains speed, water flows over and under the foil in a way that creates lift, the same aerodynamic principle described by Bernoulli that lifts a plane off a runway. When enough speed is reached, that lift exceeds the weight of the board and rider, and the board rises above the surface. The foil stays submerged the whole time, reducing drag to almost nothing while keeping you stable above the water. Interestingly, it was the hydrofoil that originally helped inspire the concept of human flight through this same principle.
The propulsion unit contains an electric motor that drives a propeller, generating thrust without any noise or exhaust. Think of it like the engines on a plane: the engines don't make the plane fly, they create the velocity that allows the wings to do their job. In the same way, the propulsion unit doesn't lift the board; it creates the speed needed for the foil to generate lift. The motor is powered by the rechargeable battery in the board, which typically gives between one and two hours of ride time at moderate speeds.
The wireless remote controller allows the rider to increase or reduce power, which directly controls speed and in turn how high the board sits above the water. What makes eFoiling so accessible is how intuitive that control becomes quickly. Small adjustments translate into smooth, flowing movement above the water.
What Does Riding an eFoil Actually Feel Like?
The closest comparison is flying just above the surface of the water. You feel almost none of the chop from below, the ride is near silent, and the sensation is one of pure, effortless glide. Once the board rises above the surface, water resistance drops away almost entirely. Most riders describe it as unlike anything else in water sports. That's because it is.
What Water Conditions Are Best for Riding an eFoil?
This is one of the most common questions from people new to the sport. One of the biggest advantages of eFoiling over traditional foiling disciplines or surfing is that you don't need ideal conditions for a great session. You're not waiting on swell, wind, or a boat. The electric propulsion system is entirely self-contained, which means wherever there's water, there's a session.
Flat water is the ideal learning environment. Lakes, bays, harbors, and calm ocean inlets all provide smooth conditions that make it easiest to build your fundamentals. Without chop to manage, you can focus entirely on throttle control, body position, and getting comfortable with the feeling of lift.
Light chop is manageable once you've had a few sessions. The foil sits below the surface and is largely unaffected by small surface waves, which means your ride stays smooth even when conditions aren't perfectly flat.
Waves and open water open up once your skills develop. Once the foil is engaged and you're comfortable in the air, you can also harness the power of waves and current, catching swells and riding them much like a surf foil. Some riders use the electric motor to get into position and then cut the power to surf the wave on foil.
Frequently Asked Questions
What is an electric hydrofoil board?
An electric hydrofoil board is a board with an underwater foil and electric motor that generates lift as it gains speed, raising the board above the water's surface. The rider stands on the board and controls speed with a handheld remote. It requires no waves, wind, or towing to operate.
How fast do eFoils go?
Most eFoils reach speeds between 20 and 35 miles per hour depending on the model, wing setup, and rider weight. Beginners typically ride well below top speed while learning, and most of the enjoyment in eFoiling happens at moderate speeds where control and carving feel most satisfying.
How long does the battery last?
Rechargeable battery life varies by model and riding intensity. At moderate speeds, most Lift eFoils offer between one and two hours of ride time per charge. It's worth noting that beginners typically drain the battery faster than experienced riders, since learning to plane and get out of the water puts more load on the motor. As your technique improves and you spend less time plowing and more time flying, ride times extend noticeably. Aggressive, high-speed riding also draws more power regardless of skill level.
Do I need experience in other water sports to learn?
No. While experience in surfing, wakeboarding, or skateboarding can help with balance and body awareness, eFoiling has its own learning curve and many riders with no board sport background learn quickly. The electric motor handles propulsion, which removes one of the biggest challenges in other foil disciplines.
Is an eFoil the same as a jet ski or motorboat?
No. An eFoil is a personal board sport, not a motorized watercraft in the traditional sense. There's no loud engine, no fuel, and no wake. It operates silently and is far more maneuverable than a jet ski. Where a jet ski is about speed and power, eFoiling is about precision, glide, and the sensation of flight.
Final Thoughts
An eFoil is one of those things that's hard to fully understand until you've tried it. Electric power, an underwater foil, and a wireless handheld remote create an experience that doesn't exist anywhere else in water sports.
Lift Foils invented the original eFoil and has spent over a decade refining every part of the experience, from the quietest motor on the market to a fully modular LCS system built to grow with you as a rider. Whether you're new to foiling or already exploring what's possible on the water, explore the full range and find the setup that fits where you're starting from.