<prompt> Translate the following text to SwahiliA large quantity of new generating capacity, consisting mostly of gas combined cycle units, has been built within the last several years.  <response>: Idadi kubwa ya uwezo mpya wa kuzalisha, inayojumuisha zaidi ya vitengo vya mzunguko wa mchanganyiko wa gesi, imejengwa ndani ya miaka kadhaa iliyopita. 