The probe agency, in its over 50-page charge sheet, has accused Kalmadi as the key person with all the powers to take decisions regaring award of contracts.
"Kalmadi is the main accused as he was the person with all supreme powers. He had the supreme over riding powers in the Organising Committee of the CWG, 2010," the charge sheet said.
Special CBI Judge Talwant Singh took the charge sheet into record and fixed it for taking up the issue of congisance on it on May 23.
Besides Kalmadi, the agency has named two companies and eight persons including OC former Secretary General Lalit Bhanot and former Director General V K Verma as accused and sought their prosecution under various provisions of the IPC, dealing with criminal conspiracy, forging documents and using fake documents as genuine.
According to the charge sheet, the accused allegedly awarded the lucrative contract to the Swiss firm to install a Timing-Scoring-Result (TSR) system for the Commonwealth Games at an exorbitant cost, causing a loss of over Rs 90 crore to the exchequer.