What is the hourly salary range of Plant Engineer?
As of May 01, 2026, the average hourly pay of Plant Engineer in the United States is $44. While Salary.com is seeing that Plant Engineer salary in the US can go up to $50 or down to $37, but most earn between $40 and $47. Salary.com shows the average base salary (core compensation), as well as the average total cash compensation for the job of Plant Engineer in the United States.