The number of PDH credits needed for PE license renewal varies by state. For states that mandate annual license renewal, the requirement is typically 15 PDH. In states that have biennial license renewal, it is typically 30 PDH.

But, there are exceptions in the biennial renewal states, including Alaska, Delaware, District of Columbia, Florida, Maryland, Minnesota, New Jersey, Pennsylvania, Tennessee, and Virginia, which all require less than 30 PDH.

New York is the only state with a triennial renewal cycle. Professional engineers registered in New York must earn 36 PDH every 3 years.