A consortium made up of Indonesia's state energy firm PT Pertamina and Japan's Marubeni Corp has signed a deal with General Electric The consortium intends to bid to build and operate the 1,600-megawatt plant, which would be the biggest gas and steam power station in Indonesia, in a tender held by state utility firm PT Perusahaan Listrik Negara in May, Pertamina said in a statement on Sunday. The consortium has also asked South Korea's Samsung C&T Corp to provide engineering, procurement and construction for the power plant, Pertamina said.