With a frequency of 59.94 Hz, what should Balancing Authority A do if its frequency bias setting is -100 MW/0.1 Hz and it needs to respond to its Net Actual Interchange?

When the frequency is at 59.94 Hz and Balancing Authority A's frequency bias setting is -100 MW/0.1 Hz, this indicates that the Balancing Authority has a negative frequency bias. The frequency bias setting tells the Balancing Authority how much additional power it needs to generate or decrease when the frequency deviates from the nominal level of 60 Hz.

In this situation, the frequency of 59.94 Hz is slightly below the nominal frequency. Given the negative bias setting, Balancing Authority A is required to respond by increasing its output (MW output) to correct for the frequency drop. Specifically, the frequency drop indicates a need for additional generating capacity to stabilize the system and keep the frequency closer to 60 Hz.

Thus, when the frequency is lower than the nominal value and given the negative bias, the appropriate action is to increase the MW output, aligning with energy balancing needs and stability requirements in the power system.