Availability-based tariff (ABT) is a system used in the power sector, particularly in India, to promote efficient generation and consumption of electricity. The components of the availability-based tariff include:
1. **Fixed Charge**: A charge that is levied irrespective of the amount of energy consumed, covering the costs associated with maintaining the power supply infrastructure.
2. **Energy Charge**: A charge based on the actual amount of energy consumed (usually measured in kilowatt-hours). This varies with the cost of generating electricity.
3. **Availability Charge**: A charge based on the availability of the generation facility. It incentivizes generators to ensure their units are available for operation.
4. **Reactive Power Charge**: This charge is applicable for reactive power (measured in VARs) and encourages consumers to maintain a power factor close to unity, which improves system efficiency.
5. **Penalty for Deviation**: Charges or penalties imposed on generators or consumers for deviations from the scheduled generation or consumption, promoting adherence to the agreed-upon schedules.
6. **Incentives for Excess Generation**: Incentives for generators that produce more than the scheduled amount, encouraging them to maximize output when possible.
These components work together to enhance the reliability of power supply and promote more balanced demand and supply in the electricity market.