Because of generally low wind strengths the Gorona del Viento (GdV) plant achieved only 28.2% renewables generation in November and December 2016. Percent total renewables generation since full operations began in June 2015 stands at 37.7% at the end of 2016, down slightly from 38.7% at the end of October 2016. Renewables generation for the calendar year 2016 was 41.1%. Minor improvements are apparently being made in wind turbine performance but hydro generation remains negligible overall. Data on GdV plant layout, operation and capacities are given in theSeptember 2015 review. Previous posts on GdV are accessible through theEl Hierro portal.
Figure 1 shows daily mean percent renewables generation since June 27, 2015 (data from Red Eléctrica de España (REE). The 100% renewables target remains as elusive as ever:
Figure 1: Daily average percentages of diesel & renewables (wind plus hydro) sent to the El Hierro grid. The month scale is not exact
The Table below updates the monthly grid statistics since startup on June 27, 2015 through December 31, 2016, a total of 18 months of operation. The “percent of El Hierro total energy demand” numbers are again based on El Hierro obtaining 23% of its total energy needs from electricity and are italicized to signify uncertainty because the 23% estimate is not verified.