Area Control Error (ACE) Equation Calculator

Calculator developed to calculate the Area Control Error (ACE) within a balancing authority. Although results are believed to be accurate, this tool is for training purposes only. Not to be used to calculate ACE in real time conditions. Can be used to compare your answers when solving the ACE equation by hand. The application is ad free and requires no special permissions.

ACE = (NIA- NIS) - 10B (FA - FS) - IME

NIA is Net Interchange, Actual

NIS is Net Interchange, Scheduled

B is Balancing Authority Bias

FA is Frequency, Actual

FS is Frequency, Scheduled

IME is Interchange (tie line) Metering Error