BEIJING--July 17, 2012--Researched by Industrial Info Resources China (Beijing, China)-- Northwest Electric Power Design Institute (NWEPDI) (Xi'an), a regional subsidiary of China Power Engineering Consulting Corporation (CPECC) (Beijing), signed the survey and engineering contract for China Power Investment Corporation 's (CPIC) 1,320-megawatt (MW) Xining Power Plant in Xi'an on June 25, 2012, according to a recent announcement from the CPECC.