<prompt> Translate the following text to SwahiliIn that same year, coal-fired U.S. plants produced about 51 percent of 3,691 billion kWh, or  <response>: Katika mwaka huo huo, mitambo ya makaa ya mawe nchini Marekani ilitoa asilimia 51 ya kilowatt-saa bilioni 3,691 za umeme. 