This tender invites bids for procurement of spares for 90 KVA and 180 KVA GPUs in Islamabad under the Power, Electrical & Solar Equipment category. The procurement is managed by Pakistan Airports Authority (PAA) and includes supply of required spare parts. Bidders must be registered with Income Tax and Sales Tax Departments and comply with FBR Active Taxpayer List requirements. The scope covers supply of spares installed at IIAP Islamabad with a contract period lasting until satisfactory completion and warranty. Bids must be submitted electronically via PPRA E-PAD system and in sealed hard copy format by the specified deadline. Original bid security is required with technical proposals. Prospective bidders should ensure timely submission to avoid technical issues and must provide proof of NTN, GST, and Active Taxpayer List compliance. Contact details for assistance and registration are provided by PAA's Director MIS. The tender is subject to acceptance or rejection by PAA as per rules.