An engineer is pictured at the control room of the al-Haswa power station which is being rehabilitated in Aden, Yemen April 24, 2018.

A view of the al-Haswa power station which is being rehabilitated in Aden, Yemen April 24, 2018.

Engineers work on rehabilitating the al-Haswa power station in Aden, Yemen April 24, 2018. Picture taken April 24, 2018.

Engineers work at the al-Haswa power station which is being rehabilitated in Aden, Yemen April 24, 2018.

An engineer works on rehabilitating the al-Haswa power station in Aden, Yemen April 24, 2018.

An engineer is pictured at the yard of the al-Haswa power station which is being rehabilitated in Aden, Yemen April 24, 2018. REUTERS/Fawaz Salman

A view of the al-Haswa power station which is being rehabilitated in Aden, Yemen April 24, 2018.

An engineer looks on during work on rehabilitating the al-Haswa power station in Aden, Yemen April 24, 2018.