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<p>conventional hydroelectric plants that have significant storage capacity may be able to play a similar role in the <a href="page.php?w=Electric_power_transmission">electrical grid</a> as pumped storage if appropriately equipped.</p>

<p><big>Economic efficiency</big></p>
<p>Taking into account conversion losses and evaporation losses from the exposed water surface, <a href="page.php?w=energy_recovery">energy recovery</a> of 70-80% or more can be achieved. This technique is currently the most cost-effective means of storing large amounts of electrical</p><p>
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