In its second repowering project, Spanish utility Endesa, now owned between Acciona and Enel, is replacing over 200, 15-year-old turbines in the 100-180 kW range with 37 modern 2 MW machines from Germany's Enercon. Dismantling began in January at the 30.6 MW Pesur-E3 wind complex, operating since 1992 at the very southern tip of Spain in Andalucia's district of Tarifa -- a Mecca for wind surfers and wind power developers alike. Endesa heads the plant's developer-operator consortium, Sociedad Eólica de Andalucía SA. "The old Ecotècnia, MADE and AWP machines did their job well," says Endesa's Miguel Angel Garcia, explaining payback was reached in 2006. The AWP turbines came from US Windpower (American Wind Power), which operated as a publicly listed company under the name Kenetech before falling into bankruptcy. The repowering will not only provide higher returns as a result of the upgrade in plant capacity and efficiency, but also from a repowering incentive introduced last year. The incentive, payable to 2017, ranges from nothing to EUR 7/MWh, dependent on overall generation efficiency and environmental gains. The size of the incentive and whether or not a project qualifies for one is to be decided by a joint central and regional government committee. Endesa's first repowering last year was of the 5.28 MW Los Valles plant in the Canary Islands where it replaced 42 AWP 100 kW machines with nine Gamesa 850 kW turbines and six 180 kW MADE machines. Endesa is also the first company to land repowering permits in Galicia. These are for its 32 MW Barbanza and 24 MW Bustelo wind plants, replacing 330 kW MADE machines with 2 MW turbines, yet to be contracted. MADE was the turbine making wing of Endesa.
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Senior Renewable Energy Analyst (WindGEMINI Product Lead) DNV GL Bristol (City Centre), City of Bristol