March 19 (Reuters) - Alcoa (NYSE:AA) Corp AA.N said on Friday it had signed new agreements with Australia's AGL Energy AGL.AX , Origin Energy ORG.AX and Alinta Energy to supply electricity to its Portland aluminium smelter in the Australian state of Victoria.
The five-year agreements will commence on Aug. 1, after its existing agreement with AGL expires, Alcoa said.