Total electricity expenditures increase by about 15% to 30% depending on the year and the scenario (see Table 3, below, and the tables in Appendix 5.2 for more detail on the changing pattern of expenditures).
( ( Total ( electricity expenditures ) ) ( ( ( increase ( by ( about ( 15 ( ( ( % to ) 30 ) % ) ) ) ) ) ( depending ( on ( ( ( ( the year ) and ) ( the scenario ) ) ( -LRB- ( ( ( see ( ( ( ( ( ( Table 3 ) , ) below ) , ) and ) ( ( the tables ) ( in ( Appendix 5.2 ) ) ) ) ) ( for ( ( more detail ) ( on ( ( the ( changing pattern ) ) ( of expenditures ) ) ) ) ) ) -RRB- ) ) ) ) ) ) . ) )
(ROOT (S (NP (JJ Total) (NN electricity) (NNS expenditures)) (VP (VBP increase) (PP (IN by) (NP (QP (RB about) (CD 15) (NN %) (TO to) (CD 30) (NN %)))) (PP (VBG depending) (PP (IN on) (NP (NP (NP (DT the) (NN year)) (CC and) (NP (DT the) (NN scenario))) (PRN (-LRB- -LRB-) (S (VP (VB see) (NP (NP (NP (NNP Table) (CD 3)) (, ,) (ADVP (IN below))) (, ,) (CC and) (NP (NP (DT the) (NNS tables)) (PP (IN in) (NP (NNP Appendix) (CD 5.2))))) (PP (IN for) (NP (NP (JJR more) (NN detail)) (PP (IN on) (NP (NP (DT the) (VBG changing) (NN pattern)) (PP (IN of) (NP (NNS expenditures))))))))) (-RRB- -RRB-)))))) (. .)))
They wanted to make a case for how to save on electricity. 
( They ( ( wanted ( to ( make ( ( a case ) ( for ( how ( to ( save ( on electricity ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (PRP They)) (VP (VBD wanted) (S (VP (TO to) (VP (VB make) (NP (NP (DT a) (NN case)) (PP (IN for) (SBAR (WHADVP (WRB how)) (S (VP (TO to) (VP (VB save) (PP (IN on) (NP (NN electricity))))))))))))) (. .)))