UPDATE 1-Brazil's Cemig ups planned Light stake sale -source
March 23, 2017 at 12:15 PM EDT
SAO PAULO, March 23 (Reuters) - Cia Energética de Minas Gerais SA plans to sell a bigger stake than initially planned in subsidiary Light Energia SA, which wants to speed up the process to help reduce its debt, a person with direct knowledge of the plan said on Thursday.