In addition to the 12.7% tariff increase, residents of the City of Johannesburg who use prepaid meters will face a recurring monthly fee of R200 for network and service charges.The tariff hike and service fee came into effect on July 1, applying to middle and high-income earners. Indigent customers, however, will be exempted and have been allocated a slightly lower tariff increase.The new charges were announced last week by City Power after the National Energy Regulator of South Africa (Nersa) approved its tariff increase application.Speaking to Eyewitness News (EWN), City Power’s…