SOFIA (Bulgaria), July 16 (SeeNews) - Bulgaria's AES Maritza East 1, which operates coal-fired power plant AES Galabovo, said that its net profit fell to 94.2 million levs ($54.2 million/48.2 million euro) in 2018 from 111.6 million levs the year before, due to an increase in expenses for greenhouse gas emission allowances.