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Pumped storage hydropower: Turkeys that can fly
Electricity system operators and investors could use pumped hydro energy storage to complement the growing deployment of renewable energy. The current grid struggles to push power through when it is being generated in large quantities, and to meet demand when generation is low. Storing energy from wind using pumped hydro means the electricity wouldn't have to be sold as it is being made, but could be saved for later.
A pumped hydro facility consists of two water reservoirs at different elevations. To store energy, water is pumped from the lower reservoir to the higher one. To generate electricity, water is returned to the lower reservoir through a turbine. This gigantic battery can be used to overcome the wind-related grid constraints AEMO identified. In our research we have found that, for Australia, the best technology may be pumping seawater up to coastal cliff tops. Pumped hydro is by far the most significant form of large-scale energy storage used globally. It makes up 99% of all large-scale energy storage. The most-likely form of pumped hydro for South Australia are coastal cliff-top seawater facilities. A "turkey-nest dam" read article
Disclaimer: The author of this post, may or may not be a shareholder of any of the companies mentioned in this column. No company mentioned has sponsored or paid for this content. Comments on this forum should never be taken as investment advice. |
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