U.S. Army Prime Power School

As a Prime Power Production Specialist, you'll be part of the Army Corps of Engineers working to install, operate, and maintain electrical power plants consisting of prime power generator sets of 500 KW and higher, and associated auxiliary systems and equipment anywhere the Army needs power. As the Army's only medium voltage specialist, you'll preform electrical assessments, facilities maintenance, QA/QC operations, LNO and technical advisor to military commanders, FEMA, and other federal organizations.

The US Army Prime Power School is open to Initial entry and reclassifying Soldiers through the rank of Sergeant. The minimum qualifications are a GT score of 110, TECH and ELEC scores of 107, High school graduate or equivalent and a score of 65% or higher on the Basic Math and Science Test (BMST).

The Prime Power MOS 12P is an accessions MOS as well as a voluntary reclassification. Service members do not need to be in their re-enlistment window in order to apply an application

Army Reserve Soldiers are also encouraged to apply. 

All reclassification applications must be submitted through your local chain-of-command and retention channels. Your Career Counselor/Retention Personnel will submit your application directly to Human Resource Center (HRC) using RETAIN.  If there are any difficulties concerning the application process, please call the U.S. Army Prime Power School at COM: (573) 596-0303 or DSN: 581-0303. 

All initial entry applicants should see their local recruiter to join the Prime Power team.

The Prime Power School is a very challenging and demanding school. Due to the in-depth instruction and large volume of material covered, students are required and expected to devote at least 30 hours of study and homework during the week, as well as, on the weekend.


The current Prime Power Production Specialist training program evolved from the Nuclear Power training program that was established in 1958 to train and qualify members of the Army, Navy, and Air Force as nuclear reactor operators and technicians. As military power requirements changed, so did the training program. In 1977, the Nuclear Power program was phased out and replaced by the Non-tactical Generator program. In 1985, the name was changed to the Prime Power Production Specialist Course.

The Prime Power Production Specialist Course, with Additional Skill Identifier (ASI), is a year-long program of instruction designed to train selected applicants to deploy, install, operate, and maintain the Army's Prime Power Program (P3) power generation and distribution assets in support of theater commanders under the provisions of AR 700-128. Students must successfully complete a demanding two-phase training course to qualify in the MOS 12P, Prime Power Production Specialist. Upon satisfactory completion of the MOS 12P course, each student is assigned to one of the three Additional Skill Identifier courses of instruction that qualifies the graduate as a Prime Power Production Instrumentation Specialist (ASI-E5); Prime Power Production Mechanical Specialist (ASI-S2); or as a Prime Power Production Electrical Specialist (ASI-S3).

Prime Power graduates work in many challenging and rewarding assignments worldwide. In wartime, Army personnel are responsible for supporting Prime Power program missions. In peacetime, skills are maintained through training exercises, emergency deployments for disaster relief efforts, and special purpose deployments for electrical power requirements in operations other than war. We also provide technical assistance missions in support of the Directors of Public Works (DPW) throughout the United States and overseas.

The Prime Power soldiers have established a long tradition of excellence and have earned a well-deserved reputation of upholding the highest standards of the Corps of Engineers. "Essayons" truly describes, both past and present, the spirit and actions of Prime Power Soldiers.

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