( ( With ( deregulation ( of ( the ( electricity industry ) ) ) ) ) ( , ( ( for ( the ( first time ) ) ) ( consumers ( ( can ( choose ( ( not only ) ( ( ( their ( power company ) ) but ) ( ( sources ( of electricity ) ) ( that ( are ( ( cleaner and ) renewable ) ) ) ) ) ) ) ) . ) ) ) ) )
(ROOT (S (PP (IN With) (NP (NP (NN deregulation)) (PP (IN of) (NP (DT the) (NN electricity) (NN industry))))) (, ,) (PP (IN for) (NP (DT the) (JJ first) (NN time))) (NP (NNS consumers)) (VP (MD can) (VP (VB choose) (NP (CONJP (RB not) (JJ only)) (NP (PRP$ their) (NN power) (NN company)) (CC but) (NP (NP (NNS sources)) (PP (IN of) (NP (NN electricity))) (SBAR (WHNP (WDT that)) (S (VP (VBP are) (ADJP (ADJP (JJR cleaner)) (CC and) (ADJP (JJ renewable)))))))))) (. .)))
With deregulation of the electricity industry, for the first time consumers can choose not only their power company but sources of electricity that  are cleaner and renewable.
(ROOT (S (NP (NP (JJ Electrical) (NN energy)) (VP (VBN consumed))) (VP (MD can) (VP (VB be) (VP (VBN expressed) (PP (IN as) (NP (NP (DT the) (NN product)) (PP (IN of) (NP (NP (NN power)) (VP (VBN multiplied) (PP (IN by) (NP (NN time))))))))))) (. .)))