Cold and dense air blowing in from the north pushed Spanish wind production to an all time record over the weekend of April 8-10 with wind operational wind power capacity peaking at of 6400 MW according to wind association Plataforma Eólica Empresarial (PEE). At the time, 21% of the national demand of 30.5 GW was being met by wind production. The highest wind penetration came on Sunday evening, when wind contributed 24% of the demand for 27.1 GW. The new record comes on the heels of strong performance during four successive peak demand records in February. PEE is using the figures to call the mass media to order. It has repeatedly reported that wind fails to produce when most needed, including during the high-demand winter cold spells. Furthermore, grid operator Red Eléctrica de España (REE) curtailed large amounts of wind power during slack demand last year, claiming that if wind production exceeded 12% of demand, it would destabilise the system. But when it has needed the wind power this year, REE has ignored its own limits.