load-shedding

from WordNet (r) 3.0 (2006)

load-shedding
    n 1: cutting off the electric current on certain lines when the
         demand becomes greater than the supply

from The Collaborative International Dictionary of English v.0.48

load-shedding \load-shedding\ n.
   The act or process of disconnecting the electric current on
   certain lines when the demand becomes greater than the
   supply.
   [WordNet 1.5] Loadsman