(S (S (BASENP (PRP They)) (VP (VBP urge) (S (BASENP (NNS customers)) (VP (TO to) (VP (VP (VB lighten) (NP (BASENP (DT the) (NN load)) (PP (IN on) (BASENP (NN power) (NN usage))))) (S (VP (TO to) (VP (VB help) (S (VP (VB avoid) (BASENP (JJ further) (NN service) (NN interruption)))))))))))) (PERIOD .))