(New York Post) Con Edison is still baffled over what caused the weekends major blackout and warned on Monday that more outages could be coming with a heat wave on the way. We expect that there could be service outages those things happen during heat waves" the power companys chief spokesman Mike Clendenin said during a morning appearance on PIX11. Insisting that the company invests $2 billion every year to prepare for soaring electricity demands when the mercury rises Clendenin claimed Con Ed will be prepared."