Power companies asked to use more renewable sources from October Posted : 2021-04-19 11:33 Agro-photovoltaic panels set up on grassy fields / gettyimagesbank South Korea said Monday it has revised the renewable portfolio standards (RPS) system to have power companies utilize more sustainable resources, in line with the country's green energy drive. Under the new rules, power companies are requested to produce up to 25 percent of all their power output from renewable sources, up from the previous 10 percent, according to the Ministry of Trade, Industry and Energy. The policy will be implemented in October. It marked the first time for the ceiling to be revised since its implementation in 2012. South Korea initially set the mandatory quota at 2 percent, which has been gradually raised to 9 percent this year.