Yes, however, tariff changes will only take place on activation and where technical support is available. You will have to pay for the following: If you have received any benefit or subsidy in the cost of service connection at the time of connection in the current tariff. The cost of materials required to make tariff changes effective. Security difference according to current rates. You have already changed the method of electricity usage as compared to the approved tariff and the assessment bill is applicable for the assessment of unauthorized use of electricity for other tariffs.