Answer:
(Fatwa: 1151/1151=M/1430)
You can perform salah in the mosque, the salah will be valid. But, you should tell the trustees and custodian of the mosque that electricity theft is unlawful and haram. The entire bill of electricity used illegally should be paid and in future the electricity should be used in lawful way, otherwise they will be responsible for the sins.
Allah (Subhana Wa Ta’ala) knows Best
Darul Ifta,
Darul Uloom Deoband
