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Tariff for Electric Means of Transport - Public Charging Tariff
Tariff for Electric Means of Transport [1] is applicable to electricity supplied by medium or low voltage and used for charging of electric means of transport.
According to the power consumption characteristics of electric means of transport, the tariff is classified into Public Charging Tariff and General Charging Tariff.
Public Charging Tariff is applicable to the charging facilities set up by CEM in public car parks, public parking areas or parking areas not located on public roads. Charges are based on the rated output power of the charging facilities and time-of-use.
- Slow Charge: Charges are based on full-load hours and low-load hours
- Medium / Quick Charge: Whole day flat rate
Public Charging Tariff is charged per each charging transaction and is calculated based on the following items:
Demand (in unit of kVA)
Calculated based on the rated maximum output power of the charging facilities selected by user. Such charge is waived.
Energy Charged
Total amount of electricity charged per each charging transaction.
Consumption (in unit of kWh)
Calculated based on energy charged.
Tariff Clause Adjustment
Adjustment in tariff to reflect fluctuation in energy production cost that is fixed quarterly.
Consumption [2]
Rated Output Power | Tariff Period | Time | Demand | Consumption |
Slow Charge | Full-load hours | 09:00 - 20:00 | 0.00 | 2.150 |
Low-load hours | 20:00 - 09:00 | 0.00 | 1.420 | |
Medium Charge | 24 hours a day | 00:00 - 24:00 | 0.00 | 2.980 |
Quick Charge | 24 hours a day | 00:00 - 24:00 | 0.00 | 3.440 |
Calculation method:
Charging fee = Demand + (Energy Charged x (Consumption + Tariff Clause Adjustment))
Example:
Generally, the battery capacity of electric vehicles (EVs) on the market is about 80 kWh. If it is charged from a remaining power level of 20% to 80%, 48 kWh is required to be charged. The following are the costs at different charging speeds and time periods. No matter which one is selected, it is cheaper than fuel.
Charging Speed | Charging period | Time required | Charging fee |
|---|---|---|---|
Slow Charge | Full-load hours | Approx.7 hours | 48 kWh x ($2.150+$0.400) = $122.40 |
Low-load hours | 48 kWh x ($1.420+$0.400) = $87.36 | ||
Medium Charge | 24 hours a day | Approx. 2.5 hours | 48 kWh x ($2.980+$0.400) = $162.24 |
Quick Charge | 24 hours a day | Approx. 1.5 hours | 48 kWh x ($3.440+$0.400) = $184.32 |
- TCA in Q2 of 2024 is MOP 0.400.
- Slow charge is calculated at complete full-load hours and complete low-load hours.
- Considering the differences in model, battery status, charging rate and charging mode of EVs, the calculation results are for reference only. The actual cost is subject to the actual charging conditions.
Remarks:
[1] Administrative Regulation No. 25/2022 of 15 June 2022.
[2] Chief Executive’s Dispatch No. 105/2022, as revised by the Chief Executive’s Dispatch No. 66/2024 of 15 April 2024.