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Major Operating Performance Indicators in the Past 10 Years

04/28/22

Major Operating Performance Indicators in the Past 10 Years
Year　 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021
Line Loss Rate                    
Line Loss Rate
％		 4.42 4.25 4.09 3.72 3.85 3.82 3.94 3.86 3.97 3.53
Power Supply Reliability                    
System Average Interruption Duration Index
min/household‧year		 19.050 18.086 17.496 16.268 16.274 16.898 16.187 16.488 15.931 16.376
(43.516)*
System Average Interruption Frequency Index 
times/household‧year		 0.298 0.264 0.264 0.220 0.208 0.212 0.227 0.209 0.230 0.233
(0.864)*
Employee Productivity                    
Sales per employee
MWh/person		 8,755 8,852 9,086 8,879 9,110 9,245 9,270 9,147 9,257 9,738
Households served per employee
household/person		 567 586 600 589 589 599 601 594 598 610
Nuclear Power Plant Operating Efficiency                    
Energy Generation
GWh		 38,887 40,079 40,801 35,143 30,461 21,560 26,656 31,147 30,342 26,818
Number of Automatic Emergency Shutdowns 
times/unit		 0.33 0.67 0 0.33 0.17 0.50 0.17 0 0.25 0.25
Thermal Power Plant Operating Efficiency                    
LHV gross
％		 42.98 43.27 43.35 43.58 43.70 43.96 44.81 45.64 46.00 46.10
Number of electromechanical accidents
times/unit		 0.49 0.37 0.29 0.36 0.53 0.18 0.15 0.12 0.11 0.11
Environmental Improvement                    
Particulate matter (PM)
Kg/GWh		 28 27 27 30 28 25 21 14 7 6
SOx
Kg/GWh		 328 301 305 315 298 278 181 125 102 97
NOx
Kg/GWh		 338 332 312 309 301 280 221 158 137 127
Note：
  1. System Average Interruption Duration Index (SAIDI) result from 513 & 517 incident are 39.558 & 3.958 (minutes) respectively, 43.516 in total.
  2. System Average Interruption Frequency Index (SAIFI) result from 513 & 517 incident are 0.799及0.065 (times) respectively, 0.864 in total.

 

Line Loss Rate

Power Supply Reliability

 

Employee Productivity

 

Nuclear Power Plant Operating Efficiency

Thermal Power Plant Operating Efficiency

 

Environmental Improvement