July 5 (Reuters) - Two of the largest trade unions at South Africa's state power utility Eskom, NUM and NUMSA, have accepted a 7% salary increase offer from Eskom, South African TV channel eNCA and website Fin24 reported on Tuesday.

Last week Eskom started implementing the worst power cuts the country had seen in more than two years, which it has blamed on striking workers hampering efforts to bring malfunctioning power units back online. (Writing by Bhargav Acharya; Writing by Nellie Peyton; Editing by Alexander Winning)