SAO PAULO/RIO DE JANEIRO, May 29 (Reuters) - Creditors of Brazilian electric utility Light on Wednesday approved the firm's restructuring plan, which includes a capital injection of up to 1.5 billion reais , the company said.

Reuters reported the approval of the restructuring plan earlier on Wednesday, citing sources.

Light, which operates Rio de Janeiro's power service, filed for bankruptcy last year, with its debt totaling 11 billion reais.

As part of the proposed restructuring, Light would receive up to 1.5 billion reais in capital, including 1 billion reais from its reference shareholders, the trio of businessmen Nelson Tanure, Ronaldo Cezar Coelho and Carlos Alberto Sicupira.

The plan, which needs to be approved by a judge, also includes up to 2.2 billion reais in a debt for equity swap.

Light CEO Alexandre Nogueira told Reuters the plan would give the firm a "very sustainable" debt level in terms of size, rates and maturities.

Shares in Light ended up 5.3% on Wednesday, having hit a session high after the approval. Brazil's benchmark equity index Bovespa fell 0.9%. ($1 = 5.2023 reais) (Reporting by Leticia Fucuchima in Sao Paulo and Rodrigo Viga Gaier in Rio de Janeiro; Writing by Andre Romani Editing by Jonathan Oatis, Kylie Madry and Matthew lewis)