1. kilo Watt hours (kWh) is the consumption of 1 (100 Watt) lamp for 10 hours
   Consumption = 100 Watt * 10 hours = 1000 Watt = 1 kWh

2. Tariff:The unit price for sale of electrical energy (kWh) and electrical power (kW) to a consumer for various uses.

3. Electricity Utility:A licensed electrical power company either owned by the government or the private sector.

4. Safe Distance:The distance -specified by law- on both sides of the electrical line within which no buildings or facilities shall be established.

1. Firstly is generated at the electricity generation station.
2. Then is transmitted through the transmission system.
3. Finally is distributed to different classes of customers through the electrical distribution network.

1. Contracts with demand up to 500kW: applied charges are only based on the monthly consumption of the electrical energy (kWh)
2. Contracts with demand more than 500kW: applied charges are based on both yearly maximum connected load (kW max.), and the monthly consumption of electrical energy in (kWh).

For these users, level of consumption and peak load should be critically considerd.