tag:blogger.com,1999:blog-4150893479354475570.post8059134382333697471..comments2023-12-09T00:57:28.188-08:00Comments on Energy Storage Trends Blog: Energy Storage Industry Grows To Integrate Wind, SolarDavid Pozeryckihttp://www.blogger.com/profile/11187054252947939829noreply@blogger.comBlogger1125tag:blogger.com,1999:blog-4150893479354475570.post-73466859743970660102011-11-19T20:15:52.772-08:002011-11-19T20:15:52.772-08:00"Pumped-hydro, which accounts for 20 GW of th..."Pumped-hydro, which accounts for 20 GW of the country's energy storage, can provide 1,000-MW storage systems for $100 per kilowatt-hour, according to The New York Times. It requires massive reservoirs that cost more than $1 billion and take years to construct with ideal geography and abundant water resources. That pretty much rules out the arid Southwest,"<br /><br />How true is this statement? If we're talking backup for wind/solar how many hours of hydro storage/generation would we really need? <br /><br />We're not talking weeks of storage, only hours.<br /><br />Furthermore, we've got something like 80,000 existing dams in the US. We use only 2,500 for power generation. Many others are going to have the head needed for pump-up and be reasonably close to transmission lines. All that would be needed is a pump/turbine and a lower reservoir.Bob Wallacehttps://www.blogger.com/profile/09823785572625960890noreply@blogger.com