Among other obligations related to the maintenance of these facilities, is to maintain the generator sets owned by GIAHSA, present in essential facilities where the continuity of the electricity supply is required, in a state that ensures their correct operation in the event of power cuts. Similarly, it requires a rental service of generator sets to electrically feed other facilities in which there is no own generator set, due to the lack of supply due to breakdown of the distribution network. That is why GIAHSA requires contracting the maintenance and rental service of generator sets with companies specialized in such activity.

Lot 1 - Maintenance, rental of generator sets and fuel tanks in facilities included in the GIAHSA work areas called Costa, Huelva and Condado (hereinafter southern zone).

Lot 2 - Maintenance, rental of generator sets and fuel tanks in facilities included in GIAHSA's work areas called Andévalo, Cuenca Minera and Sierra (hereinafter northern zone)