Page 78 - SD RATCH EN

78
Sustainability Report 2020
RATCH Group PCL.
Guidelines on the management of key contractual specifications
Availability Payment
Reliability
Heat Rate
• Target availability is set on an annual basis, aligned with the Contracted Availability Hour (CAH).
• Inability to maintain contractual availability payment will result in penalties.
• Crucial to secure customer satisfaction.
• Reliabilityreferstothenumberof operating hours against unplanned outage hours.
• Inpurchaseagreements,unplanned outage hour is set at 3-5 percent of contracted availability hour.
• Unplannedoutagehourisakeyfactor to determine availability payment.
• Heat rate is specified in PPAs, covering the amount of energy used to generate one kilowatt-hour (kWh) of electricity.
• Heat rate reflects customers’ cost of electricity.
• Power plants’ maximum generating efficiency must be maintained, to minimize fuels as much as possible.
• Heat rate is aligned with each power plant’s efficiency. Low heat rate indicates high efficiency.
Availability and Reliability of RATCH-controlled power plants
Power plant
Equivalent Availability Factor (EAF)
Reliability Factor (RF)
Target
Performance
Target
Performance
Ratchaburi Thermal Power Plant Unit 1
95.47
97.18
Ratchaburi Thermal Power Plant Unit 2
Ratchaburi Combined Cycle Power Plant Block 1
95.47
89.16
97.18
95.30
95.47
95.47
92.97
97.18
97.18
97.94
Ratchaburi Combined Cycle Power Plant Block 2
89.16
95.77
92.97
98.18
Ratchaburi Combined Cycle Power Plant Block 3
79.74
83.67
92.95
97.53
Nava Nakorn Cogeneration
97.77
98.49
Berkprai Cogeneration Power Plant
RATCH Cogeneration
97.03
98.75
91.99
96.60
Unspecified
Heat Rate: (Unit: BTU/kWh)
Power plant
Natural gas
Diesel oil
Target
Performance
Target
Performance
Ratchaburi Thermal Power Plant Unit 1
Under “reserved shutdown” ordered by National Control Center
Not used
Ratchaburi Thermal Power Plant Unit 2
Ratchaburi Combined Cycle Power Plant Block 1
7,184
7,139
Unspecified
Ratchaburi Combined Cycle Power Plant Block 2
7,166
7,143
Ratchaburi Combined Cycle Power Plant Block 3
7,204
7,149
Nava Nakorn Cogeneration
7,873
7,978
Not used
Berkprai Cogeneration Power Plant
7,383
7,380
RATCH Cogeneration
7,800
7,907
Noted : Tri Energy Power Plant was not ordered for generation in January-June (PPA expired on 30 June 2020)