December 15, 2011. Reliance Infrastructure will auction its power transmission company - Reliance Power Transmission - to raise money and limit its risks in a volatile sector. The company has given the mandate to UBS to look for bidders. Reliance Transmission invited bids last month after which the short-listed bidders were given access to the company's books. The short-listed bidders will have to submit their final bids by mid-December. Reliance Transmission, a subsidiary of Reliance Infra, builds power transmission lines that carry electricity from generating stations to consumers. The company builds, maintains and operates transmission lines for a given period, normally 25 years. The company has bagged four projects that include a project in the western region, expanding over 9 lines of 3,285 circuit km, the transmission lines for the Prabati Koldam hydel power projects of 457 circuit km and transmission lines for Mumbai city, among others. The transmission business is going through a rough patch, following the downturn in the power industry and the escalations in prices of raw materials like aluminum.