A novel energy storage solution featuring pipes and anchors


Image credit: buoyant-energy.com

That’s the headline, but is ‘novel’ its only merit? Buoyant Energy is described as promising but then, aren’t they all? Energy storage on a meaningful scale seems as far away as ever, having rejected the obvious ones: coal, oil, gas and sometimes even nuclear.
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What do pipes and anchors have to do with storing energy? More than you might think, suggests TechXplore.

A new IIASA-led study explored the potential of a lesser known, but promising sustainable energy storage system called Buoyancy Energy Storage.

There is general consensus that renewable energy sources will play an important role in ensuring a healthier and more sustainable future for the planet and its people, and many countries are indeed already seeing such technologies displacing “dirty” fossil fuels in the power sector in an effort to lower emissions. [Talkshop comment – CO2 emissions have absolutely nothing to do with dirt].

The biggest problem with renewable energy sources, however, is that power supply is intermittent, meaning that the energy output at any given time does not necessarily meet the demand at that time.

With solar power generation for instance, electricity generation peaks during the day when electricity demand is low, resulting in times of energy excess alternating with times of energy shortage.

The balance between energy supply and demand is a prerequisite for any stable energy system. In the case of intermittent renewable energy supply, reliable and efficient ways to store energy will be crucial to ensure the successful adoption of these technologies.

In their latest paper published in the journal Energy Storage, IIASA researcher Julian Hunt and colleagues explored one of the lesser known, but promising sustainable energy storage systems, namely Buoyancy Energy Storage Technology.

Continued here.

University of Innsbruck: Buoyant Energy at a glance [pdf]

via Tallbloke’s Talkshop


June 23, 2021 at 02:12PM

One thought on “A novel energy storage solution featuring pipes and anchors”

  1. While writing the paper, I had in mind that the BEST system will not be competitive with batteries for energy storage. But as a component of a deep underwater hydropower pipeline, it showed several benefits when comparing with liquid hydrogen tankers. Mainly efficiency (90% efficient isothermal compression) and costs (the pressure inside and outside of the pipeline are the same. A thin HDPE pipeline will do). The sand in the pipeline is required to reduce the buoyancy of the pipeline and allow if to partially float underwater.


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