Enter the total time the line is out of operation (hrs) and the total time the line is in operation (hrs) into the Forced Outage Rate Calculator. The calculator will evaluate the Forced Outage Rate.

Forced Outage Rate Formula

The following two example problems outline the steps and information needed to calculate the Forced Outage Rate.

FOR = OUT / (OUT+IN) * 100

Variables:

• FOR is the Forced Outage Rate (%)
• OUT is the total time the line is out of operation (hrs)
• IN is the total time the line is in operation (hrs)

How to Calculate Forced Outage Rate?

The following steps outline how to calculate the Forced Outage Rate.

1. First, determine the total time the line is out of operation (hrs).
2. Next, determine the total time the line is in operation (hrs).
3. Next, gather the formula from above = FOR = OUT / (OUT+IN) * 100.
4. Finally, calculate the Forced Outage Rate.
5. After inserting the variables and calculating the result, check your answer with the calculator above.

Example Problem :

Use the following variables as an example problem to test your knowledge.

total time the line is out of operation (hrs) = 50

total time the line is in operation (hrs) = 200

FOR = OUT / (OUT+IN) * 100 = ?