<prompt> Translate the following text to EnglishBadala ya kupunguza kwa asilimia 16 kutoka kiwango cha uzalishaji wa 4.200 bilioni kWh katika kesi ya CEF ya 1999, hali ya D sawa katika uchambuzi huu ilipata kupunguzwa kwa asilimia 12 tu kutoka uzalishaji wa 4.48 bilioni kWh.  <response>: Rather than a roughly 16 reduction from a generation level of 4,200 billion kWh in the 1999 CEF Advanced Case, the scenario D equivalent in this analysis achieved only a 12 reduction from a generation of 4,580 billion kWh. 