However, a capacity utilization rate that is nearing 100% is ... because ...

A capacity utilization rate that is nearing 100% is ideal because it means that company's actual output is almost the same as its maximum possible output.

Explanation:

Capital utilization rate is used to calculate the rate at which levels of output are met. It is defined by the given formula:

Capacity utilization = (Actual level of output / Maximum level of output) · 100

If the Capacity utilization rate is near 100%, it means that actual level of output is almost same as the maximum level of output, which is considered as the Ideal rate.

Ideal rate is usually not possible because there are a lot of hurdles in the processes. A rate of 85% is considered the optimal rate for most companies.