Oct 22 (Reuters) - TransAlta Renewables Inc RNW.TO :
* TRANSALTA RENEWABLES EXECUTES 15-YEAR CONTRACT EXTENSION IN WESTERN AUSTRALIA WITH BHP NICKEL WEST
* AMENDMENT TO PPA REPLACES PREVIOUS CONTRACT THAT WAS SCHEDULED TO EXPIRE DECEMBER 31, 2023
* PPA AMENDMENT EXTENDS TERM TO DECEMBER 31, 2038