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Reliability Charge
What is Reliability Charge?
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Firm Energy for the Reliability Charge
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This is an informative document and does not replace the regulation issued by the CREG.

Firm Energy for the Reliability Charge
Thermal Generation Plants



The ENFICC of a thermal plant is calculated based on the generation capacity of the plant, the fuel availability, the number of hours per year and an index that incorporates the restrictions imposed on the plant, which limits its maximum energy generation. These restrictions are the historical forced outage rate and the constraints on the supply and transport of natural gas, in case generators use natural gas for their energy generation.


> See Article 36 of the CREG Resolution 071 of 2006


Index of Historical Unavailability due to Forced Outages – IHF

To integrate in the calculation of the ENFICC the availability of generation plants and units both from thermal and hydraulic resources, the CREG defined the IHF, which considers the observed unavailability of each generation asset without including those events that are not under the control of the generator, such as:

Failures in the National Transmission System or in the Regional Transmission System;
Rationing of Natural Gas declared by the Ministry of Mines and Energy.


If the generator is interested in increasing its ENFICC through the improvement of this index, the generator can inform the CREG within the timetable specified by the CREG. The generator should submit the project schedule that supports the announced improvement and a guarantee that backs-up the energy difference due to the change in the index.

In the case of new plants, which do not have yet enough historical information for the calculation of this index, the CREG has established certain values applicable to the first two years of plant operation.


> See Numeral 3.4 of Anex 3 of CREG Resolution 079 of 2006