Energy Secretary Alfonso Cusi wants Manila Electric Co. to subject its controversial power supply agreements (PSAs) to a Swiss challenge. These PSAs, which cover 3,551 megawatts or about 90 percent of Meralco's power requirements in the next 20-25 years, have come under fire from lawmakers for allegedly skirting the mandatory competitive selection process (CSP). The seven controversial PSAs entered into with Meralco-affiliated generation companies are pending the approval of the Energy Regulatory Commission. ?