# This Kite Turbine Increases Tidal Energy by 500%!

Source: https://www.youtube.com/watch?v=U_KCkxdRhvA
Recap page: https://rapidrecap.app/video/U_KCkxdRhvA
Generated: 2025-07-09T18:06:43.072+00:00

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## Quick Overview

Minesto's innovative kite turbines generate clean energy 24/7 by flying in a figure-8 pattern underwater, producing 3 to 10 times more power than static systems and effectively doubling the world's exploitable tidal energy resources by operating efficiently in slower currents. This technology offers predictable, consistent power, addressing key challenges faced by traditional tidal energy solutions.

## Summary

**Key Points:**
- Minesto's kite turbines fly in a figure-8 pattern underwater, generating 3 to 10 times more power than static tidal systems.
- The technology operates effectively in slow ocean currents (as low as 1.2 m/s), significantly expanding the world's exploitable tidal energy resources.
- Minesto's systems are already powering communities in the Faroe Islands, delivering electricity directly to the national grid.
- Tidal energy is highly predictable, allowing for precise forecasting of power generation decades in advance, unlike solar and wind.
- The modular design of Minesto's kites allows for easier assembly and transport, fitting into standard shipping containers.
- The technology is environmentally friendly, with low lifecycle carbon emissions and the potential to create artificial reefs that benefit marine life.
- Despite promising advancements, cost competitiveness with other renewables and navigating complex permitting processes remain key challenges for widespread adoption.

**Context:** Tidal energy, a form of hydropower that converts the energy of tides into electricity, has long been considered a promising renewable resource due to its predictability. However, traditional tidal turbines require strong currents and face significant challenges related to high installation costs, complex maintenance, and limited suitable deployment locations. The global installed capacity for tidal energy remains relatively low compared to other renewables.

## Detailed Analysis

Minesto, a Swedish company, has developed a unique tidal energy solution using underwater kite turbines that fly autonomously in a figure-8 pattern, generating significantly more power than traditional static systems. This dynamic movement allows their kites to produce 3 to 10 times more energy from the same current speeds and operate effectively in currents as low as 1.2 meters per second, which is below the threshold for conventional turbines. This expanded operational range effectively doubles the world's exploitable tidal resources, opening up vast ocean areas previously unsuitable for energy generation. Unlike intermittent solar and wind power, tidal energy is highly predictable, driven by lunar forces, allowing for precise forecasting decades in advance. While traditional tidal installations are costly (€3-5 Million/MW) and complex to maintain, Minesto's modular system is easier to assemble and deploy, fitting into standard shipping containers. Despite these advantages, the technology faces hurdles including high initial costs (currently 11-45 cents/kWh, aiming for 10 cents/kWh by 2030), supply chain immaturity, and complex permitting processes. Environmentally, the kites are ocean-friendly, with low lifecycle greenhouse gas emissions and the potential to create artificial reefs that enhance marine ecosystems. Minesto's Dragon 4 and Dragon 12 systems are already powering communities in the Faroe Islands, demonstrating their real-world viability and contributing to a stable, clean energy supply.

### Minesto's Unique Technology

- Minesto's system uses an integrated nacelle and wing that generates lift from underwater currents, with a turbine at the rear powered by ocean currents and connected to a gearbox for optimal speed
- An integrated circuit control system actuates dual rudders and elevators, allowing the kite to dive, climb, and turn left and right in a figure-8 pattern
- This autonomous flight pattern constantly accelerates the kite through the water, enabling it to produce 3 to 10 times more power than static systems from the same current speeds.

### Advantages Over Traditional Tidal Energy

- Minesto's kites work effectively in current speeds as low as 1.2 meters per second, significantly lower than the 2.5 meters per second required by traditional turbines, thereby doubling the world's exploitable tidal resource
- Ocean water is 850 times denser than air, meaning a tidal turbine can produce 850 times more energy than a wind turbine in similar speeds
- Tidal energy is highly predictable, driven by the moon's gravitational forces, allowing for energy generation forecasts decades in advance, which reduces the need for costly backup systems and grid balancing hardware.

### Current Status and Future Potential

- Minesto's Dragon 4 and Dragon 12 systems are currently operating in the Faroe Islands, delivering electricity directly to the national grid with a total contracted capacity of 2.2 MW
- The flagship Dragon 12 system delivers 1.75 MW from a 12-meter wingspan, while the compact Dragon 4 produces 100 kW from a 4.9-meter wing that fits in a standard shipping container
- First commercial arrays are expected by 2025-2027, with a planned 10 MW expansion in the Faroe Islands, aiming for cost competitiveness with wind and solar by 2030-2035.

### Challenges and Environmental Impact

- The biggest challenge remains cost, with current Levelized Cost of Energy (LCOE) ranging from 11 to 45 cents per kilowatt-hour, which is 2 to 4 times more expensive than onshore wind
- Other hurdles include installation complexity in harsh marine environments, an immature supply chain lacking specialized production capacity, and a brutal permitting maze requiring numerous approvals
- Despite challenges, the systems are ocean-friendly, with low lifecycle greenhouse gas emissions (15-100g CO2/kWh) and zero emissions during operation, and can even improve marine ecosystems by acting as artificial reefs, increasing fish populations and creating marine protected areas.

### Societal and Economic Benefits

- Minesto's technology offers a solution for island nations and coastal regions that often rely on expensive imported fossil fuels or face unreliable power grids
- By unlocking 90-98% of ocean areas previously useless for energy generation, this technology provides access to predictable, clean electricity from local waters, reducing energy costs and increasing energy independence for remote communities.

![Screenshot at 00:08: Yellow kite turbine flying underwater](https://ss.rapidrecap.app/screens/U_KCkxdRhvA/00-00-08.png)
![Screenshot at 00:29: Host introducing the video's topic](https://ss.rapidrecap.app/screens/U_KCkxdRhvA/00-00-29.png)
![Screenshot at 00:55: Yellow kite turbine being lifted by crane](https://ss.rapidrecap.app/screens/U_KCkxdRhvA/00-00-55.png)
![Screenshot at 01:03: Workers assembling the turbine components](https://ss.rapidrecap.app/screens/U_KCkxdRhvA/00-01-03.png)
![Screenshot at 01:37: Underwater kite turbine in operation](https://ss.rapidrecap.app/screens/U_KCkxdRhvA/00-01-37.png)
![Screenshot at 02:25: Large traditional tidal turbine being deployed](https://ss.rapidrecap.app/screens/U_KCkxdRhvA/00-02-25.png)
![Screenshot at 03:09: Animation showing power equation for fluid energy](https://ss.rapidrecap.app/screens/U_KCkxdRhvA/00-03-09.png)
![Screenshot at 04:11: Animated view of kite flying in figure-8 pattern](https://ss.rapidrecap.app/screens/U_KCkxdRhvA/00-04-11.png)
![Screenshot at 06:02: Comparison of Minesto's kite vs traditional turbine](https://ss.rapidrecap.app/screens/U_KCkxdRhvA/00-06-02.png)
![Screenshot at 08:06: Graphic showing Minesto's systems in operation](https://ss.rapidrecap.app/screens/U_KCkxdRhvA/00-08-06.png)