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Vertical Axis Wind Turbines Are About to Suck: Here’s Why

Posted on May 21, 2025 By Dante No Comments on Vertical Axis Wind Turbines Are About to Suck: Here’s Why

For years, the wind industry has been touting vertical axis wind turbines (VAWTs) as the next big thing. These sleek, eggbeater-style turbines were supposed to revolutionize the way we generate wind power, offering higher efficiency, reduced noise, and increased safety. But the reality is far from revolutionary.

Learn more: Harnessing the Power of the Wind: How Optimization is Revolutionizing Renewable Energy

In fact, VAWTs are often a hindrance to the very cause they claim to support. The technology has been around for decades, yet despite its supposed benefits, VAWTs have failed to gain significant traction in the market. And for good reason.

One of the main issues with VAWTs is their notoriously poor efficiency. While traditional horizontal axis wind turbines (HAWTs) can achieve efficiencies of up to 50%, VAWTs typically max out at around 30%. This is because VAWTs rely on a slower, more turbulent flow of air, which reduces their ability to extract energy from the wind.

Learn more: Why Hydrogen Fuel Cells Might Just Be the Unsung Heroes of Clean Energy

But it’s not just efficiency that’s the problem. VAWTs also have a reputation for being incredibly noisy, with some models producing sound levels of over 100 decibels. That’s louder than a lawnmower or a chainsaw! This noise pollution can be a major issue for communities near wind farms, and it’s a significant drawback for a technology that’s supposed to be a cleaner, more sustainable alternative to fossil fuels.

And then there’s the issue of safety. VAWTs often have a higher center of gravity than HAWTs, which makes them more susceptible to damage from extreme weather events like hurricanes or tornadoes. This can lead to costly repairs and even complete turbine failure – not exactly what you want when you’re relying on your wind farm for renewable energy.

So, why are VAWTs still being pushed as a viable alternative to HAWTs? One reason is that they’re often cheaper to manufacture upfront, thanks to their simpler design. But this cost savings comes at a significant long-term cost, as VAWTs require more frequent maintenance and have a shorter lifespan than HAWTs.

Despite these drawbacks, there are still some innovators out there working on improving VAWT technology. Companies like Openeko, for example, are developing new designs that use advanced materials and aerodynamics to boost efficiency and reduce noise. And some researchers are even exploring the use of VAWTs in urban areas, where traditional wind turbines might not be feasible.

But for now, it seems that VAWTs are more of a niche player in the wind industry, rather than a game-changer. And that’s okay – after all, sometimes it’s better to focus on what works, rather than chasing the next big thing.

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