On any given day last week, it would’ve taken less than 10 seconds going out the door to be reminded why the media were on Friday in several transmission zones in the Mid-Atlantic region. PJM used load management to deal with local transmission/generation issues and to ensure sufficient reserves over the peak hour. Under the load management program, PJM members sign up their own customers that, in return for payment, voluntarily agree to reduce electricity use when needed.
As a result of those efforts, the grid held up well.
PJM issues its daily load forecast for peak power use through Twitter at http://Twitter.com/pjminterconnect.