To subscribe in MTN Power Tariff, call 555 then press 4 and follow the instructions. 50 YR is deducted at once when changing the Tariff Plan. 200 YR   is the subscription fee of Power tariff Prepaid  Power Monthly Fees  200 Calls – Onnet Rate – Peak  (7:00AM-11:00PM)  9 Calls – Onnet Rate –  Off Peak … Continue reading MTN Power