This tender invites bids for the rehabilitation of electrical and civil infrastructure of a sub-station near Tank No. 17 at JIAP Karachi. The scope includes electrical works such as laying HT cables, installation of vacuum circuit breakers, and civil works including excavation, concreting, and RCC works. The project duration is 180 days from the date of written order. Bidders must be registered with the Pakistan Engineering Council in at least C-4 category with relevant codes. Submission of bids is electronic through the PPRA E-PAD system, with bid security and other required documents as per tender conditions.