<prompt> unaweza kugeuza matini haya ya swahilikwa kiingereza?ni wakati mwingine ni muhimu kutoa stima nyuma-up katika tukio la kukatika gridi ili kulinda baadhi taratibu hasa ngumu, au wakati usumbufu wowote itakuwa hasa kuharibu katika masuala ya usalama au gharama.  <response>: it is sometimes necessary to provide a back-up electricity supply in the event of a grid outage in order to protect certain especially complex processes, or when any interruption would be particularly damaging in terms of safety or cost 