“The project is aimed at the design, development, construction commissioning of a hydro-wind system able to cover the electrical demand of the island of El Hierro, making this island a territory that is self-supplied in terms of electricity, strictly through renewable energies.”
Glenn Herbert wrote:Assuming your calculations are correct, what could have caused the developers to so massively underestimate the necessary amount of wind power?
Glenn Herbert wrote:Are you calculating as if all of the power is supplied to users from pumped storage, or do you account for some percentage to be directly supplied from the wind turbines?
Steve Farmer wrote:The diesel power plant provides the power for pumping the water uphill and then the hydro turbines supply the consumers with their grid power. I'm struggling to see how this benefits anybody except the people who got paid to do it?
Glenn Herbert wrote:Where does the diesel power plant come in? The idea was to use the surplus electricity produced by the wind turbines to pump water uphill.
Islands Trying To Use 100% Green Energy Failed, Went Back To Diesel
El Hierro, one of the Canary Islands off North Africa’s coast, replaced its diesel power plant with a hybrid wind power and pumped hydro storage system worth $94 million.
El Hierro was supposed to be the poster child for 100 percent green energy. The island, located in the Spanish Canary Islands, replaced its diesel power plant with a hybrid wind power and pumped hydro storage system worth $94 million in 2014. The system has only been active since June of 2015.
The expensive system, however, provided an unpredictable amount of power and couldn’t even electrify the entire island. For example, during the high-wind period in the summer of 2015 the island got 51.7 percent of its power from the system, but a low-wind period in December saw the system generate a mere 18.5 percent of the island’s electricity. The sheer unpredictability of the system damages the island’s electrical grid and forces the island to rely on the diesel power it was supposed to replace.
The IER analysis estimates that it would take 84 years for El Hierro’s wind and hydropower system to simply payback its capital costs.