<prompt> Translate the following text to EnglishMatokeo ya pamoja ya mpango na matumizi ya RD, pamoja na sera nyingine zilizoelezwa katika ripoti ya CEF ikiwa ni pamoja na malipo ya kaboni ya 50 iliyotumika katika hali ya juu ya CEF, ilisababisha kupunguzwa kwa mahitaji ya nishati ikilinganishwa na kesi ya kumbukumbu ya CEF.  <response>: The combined effect of the program and RD expenditures, together with other policies described in the CEF report including a 50 carbon charge applied in the CEF Advanced Scenario, drove a steady reduction in the need for energy compared to the CEF reference case. 