Islamabad Electric Supply Company
IESCO's history stretches back further than most other DISCOs: it began life as the Rawalpindi Electric Power Company (REPCO) in 1923, during British colonial rule, decades before Pakistan's power sector was corporatised. It was reorganised into Islamabad Electric Supply Company in 1998.
IESCO now bills roughly 2.8 million consumers across Islamabad, Rawalpindi, Attock, Chakwal and Jhelum, running 108 grid stations and 951 feeders, and also extends supply into parts of Azad Kashmir beyond its five core districts.