<prompt> Translate the following text to SwahiliWe have not seen anything that demonstrates that every coal-fired power plant would be able to achieve 90 percent source-specific controls for mercury by 2007, without considerable fuel switching, which would be very disruptive to our economy and undermine energy security.  <response>: Hatujaona kitu chochote kinachoonyesha kwamba kila kiwanda cha umeme cha makaa ya mawe kitaweza kufikia udhibiti wa 90 wa chanzo maalum cha zebaki ifikapo mwaka 2007 bila kubadilisha mafuta mengi, ambayo ingekuwa na usumbufu mkubwa kwa uchumi wetu na kudhoofisha usalama wa nishati. 