The shutdown of the 220 KV lines reduced by 500 megawatts ( MW ) the amount of power which the area received from SoCal Edison 's 1,200 MW Sierra hydroelectric facility , he said .
<response> The shutdown of the 220 KV lines reduced by 500 megawatts ( MW ) the amount of power which the area received from <organization>SoCal Edison</organization> 's 1,200 MW <location>Sierra</location> hydroelectric facility , he said . </response>