Core Insights - Portugal's electricity market regulator ERSE has proposed a 1% increase in regulated tariffs for 820,000 households and small businesses, which will also have an indirect impact on market prices charged by utilities [1] Group 1 - The proposed tariff increase will affect 820,000 households and small businesses in Portugal [1] - The 1% rise in regulated tariffs is expected to influence market prices charged by utilities indirectly [1]