A study was recently undertaken to determine the role and value of advanced pumped-storage hydropower (PSH) in the U.S.1 Work involved developing detailed simulation models of advanced PSH technologies (adjustable speed, or AS, and ternary units) in order to analyze their technical capabilities to provide grid services and to assess the value of these services under different market structures and for different levels of renewable generation resources integrated in the power system.

Compared with fixed-speed (FS) PSH units, AS and ternary units provide greater operating flexibility and efficiency but are more expensive to build due to additional equipment and space requirements. An especially important characteristic of AS and ternary technology is their ability to provide regulation service in the pumping mode of operation…

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Areas of Focus: Energy Markets
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Energy Markets
Well-functioning markets are essential for providing access to reliable, affordable energy. EPIC research is uncovering the policies, prices and information needed to help energy markets work efficiently.
Renewable Energy
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Renewable Energy
Lower technology costs and supportive public policies are driving an increase in renewable energy in markets around the world. EPIC research is assessing the costs, benefits, and efficiency of policies...