Why annual label consumption?
It gives a more comparable basis than marketing terms alone. Capacity, annual energy use, seasonal efficiency and purchase price all matter.
Which electricity tier should I use?
Use 18 halala/kWh if the relevant incremental use remains within the first 6,000 kWh per month, or 30 halala/kWh for incremental use above that threshold. Real households that cross the threshold only in some months may land between the two simple scenarios.