1. Proposal Framework
The Study on Electricity Use
Behavior and Cost Allocation
due to the Use Pattern
Presented by…
Chulalongkorn University
23 July 2012

2. Framework
Government Policies
c0 p0
+
Supply Demand
Q0
• Demand behavior (given Q0)
• Residential (d1)
• Small general service (d2)
• Medium general service (d3)
• Large general service (d4)
• Specified business service (d5)
• Non-profit organization (d6)
• Water pumping (d7)

3. Cost allocation concept
C1,d1 p1,d1
C1,d2 p1,d2
C1,d3 p1,d3
C1 C1,d4 p1,d4
Mix +
C1,d5 p1,d5
Supply Demand
C1,d6 p1,d6
C1,d7 p1,d7
Given Q0,P0
Allocation based on peak pattern of demands (users behavior)

4. Cn,d1 pn,d1
Cn,d2 pn,d2
Mix 1
Mix 1 Cn,d3 pn,d3
Mix 1
Mix 1
Mix 1
Supply Cn,d4 pn,d4
+
Objective function: Cn,d5 pn,d5
Min Offered Cost
Decision variable: x=power plant
Subject to: Cn,d6 pn,d6
all technology constraints
Cn,d7 pn,d7
Pn, ∑Qn

5. Power Plant Information
Player EGAT, IPP, SPP, VSPP, Import
Technology Thermal, Combine-cycle, Co-generation, Gas
turbine, Hydro, Solar, Wind, Geothermal,
Peak Plant Nuclear, etc.
Fuel Natural gas, Lignite, Coal, Diesel, Fuel oil,
Biomass, Biogas, etc.
Plant Capacity xx MW
Supply Availability 70%
Intermediate Plant Plant age 25 yr
Lifetime 30 years
Investment cost xx baht/MW
Operating and xx baht/kWh
maintenance
cost
Base Plant Heat rate
Fuel cost

6. “Generation”
Peak allocation
Supply
Total cost = Wholesale Power Purchas Mechanism
= capacity payment + energy payment + ancillary service
payment (unit: Baht/kWh)
Allocation rates is allocated investment cost according to the
demand behavior. (“Demand Response Rate”)

7. “Transmission Charge and Distribution Charge”
Supply
Total cost = use of system capacity charge + use of system energy
charge + connection charge (unit: Baht/kWh)
= allowed return + depreciation + O&M/ admin cost +
cost of network loss + connection cost

8. “Other cost components”
• System Operation and Single Buyer
• Retail cost
• PSO, USO, Adder/ FIT, PDF 97(3)
• Tariff adjustment (∆EP, ∆PDF 97)
Supply
Baht/ kWh

9. Government Policies
Supply load management
Supply
Demand load pattern
(by customer type)
“Electricity Tariff Structure”