The Automatic Adjustment Mechanism Formula Or Ft Formula
31 July 2012
5000
The Automatic Adjustment Mechanism Formula Or Ft Formula
Ft is variable tariff or tariff derived from the Automatic Tariff Adjustment Mechanism formula . It had been several revised and now is particularly important to encourage efficient procurement of generation from EGAT’s own plant and EGAT’power purchasing from independent power producers (IPPs) , small power producers (SPPs) and neighbour countries (Laos and Malaysia) as generation costs are the largest component of electricity costs. Ft is also included the expense occurred from Government Policies.
The present Ft formula comprises the fuel cost and power purchasing price that differ from the assumptions initially used for determining the base tariff. The fuel cost and power purchasing price include the following :
The present Ft formula comprises the fuel cost and power purchasing price that differ from the assumptions initially used for determining the base tariff. The fuel cost and power purchasing price include the following :
-
1
The fuel costs of power plants of EGAT (fuel oil, diesel, natural gas, lignite, imported coal, etc.) -
2
The cost of power purchase from Independent Power Producers (IPPs) and Small Power Producers (SPPs), covering both the availability payments and the energy payment -
3
The cost of power purchase from neighboring countries (Lao PDR, Malaysia and others) -
Ft
= (EFC – BFC) + AF -
EFC
= Σ (Pi x Qi)t
Ui -
EFC
= Estimated Fuel Costs and Energy Payments for current 4-month period -
BFC
= Base Fuel Costs and Energy Payments as of May – August 2011 (2.1028 Baht/kWh) -
AF
= Accumulated Energy Adjustment Charge for previous 4-month period -
t
= 1st, 2nd, 3rd and 4th month -
i
= fuel or purchase number i
