Tariff group B [1] is available to customers supplied by medium or low voltage, with subscribed demand not less than 69 kVA and monthly consumption not less than 10,000 kWh.
| Standard Voltages |
|---|
Low voltage 230/400 V
Medium voltage 11,000 V
| Tariff Classes |
|---|
B1 – MV supply and metering
B2 – MV supply and LV metering
B3 – LV supply and metering
| Charges |
|---|
Consumption charge under tariff group B are based on:
Demand – Demand in kW calculated by
0.2Pc + 0.8Pu
Pu – Highest Measured demand in kW in a given billing period.
- For tariff class B2, 1% of the highest measured demand is charged to recover the transformer winding loss.
- For tariff class B3, 2% of the highest measured demand is charged to recover the transformer winding and low-voltage network losses.
Pc – Subscribed demand in kW.
- Pc is updated automatically by Pu whenever Pu exceeds Pc. It is reduced to the highest Pu, whenever Pu is lower than Pc throughout a period of 12 months.
Active Energy –Energy measured in kWh.
- For tariff class B2, 1% of the measured active energy is charged to recover the transformer winding loss.
- For tariff class B3, 2% of the measured active energy is charged to recover the transformer winding and low-voltage network losses.
Reactive Energy –Energy measured in kvarh.
- Only the portion of reactive energy that exceeds 60% of active energy in the same tariff period is charged.
- For tariff classes B2 and B3, 10% of active energy in the same tariff period is charged to recover the transformer reactive energy loss.
Tariff Clause Adjustment [2] – Adjustment in tariff to reflect fluctuation in energy production cost, that is fixed quarterly.
Government Tax – Monthly tax payable for the usage of electrical installation.
| Tariff Periods |
|---|
| Full-load hours | 09:00 – 20:00 |
| Low-load hours | 00:00 – 09:00 ; 20:00 – 24:00 |
| Prices [3] |
|---|
| Tariff B1 | Tariff B2 | Tariff B3 | ||
| Demand | 19.797(MOP/kW) | 21.484(MOP/kW) | 21.484(MOP/kW) | |
| Active Energy | ||||
| Full-load hours | 0.874(MOP/kWh) | 0.874(MOP/kWh) | 0.874(MOP/kWh) | |
| Low-load hours | 0. 767 (MOP/kWh) | 0.767 (MOP/kWh) | 0.767 (MOP/kWh) | |
| Reactive Energy | ||||
| Full-load hours | 0. 348 (MOP/kvarh) | 0. 348 (MOP/kvarh) | 0. 348 (MOP/kvarh) | |
| Low-load hours | 0. 116 (MOP/kvarh) | 0. 116 (MOP/kvarh) | 0. 116 (MOP/kvarh) |
| Wise Management of Electricity Cost |
|---|
- Arrange to consume energy during low-load hours, as much as possible.
- Reduce reactive energy consumption by installing compensation equipment like capacitor bank.
- Reduce the simultaneous usage of electrical equipment to decrease demand charges.
Remarks:
[1] Decree-Law n.º35/86M of August 30.
[2] Administrative Regulation n.º5/2007 of March 19.
[3] Executive Order n.º23/2004 of August 9.