Power Plant Operator: The Job, Pay and Route In

Power plant operators control the equipment that generates electricity, and it is one of the better-paid jobs in the US that does not require a degree: the May 2025 median wage was $102,040, with the top tenth above $131,900. It is also one of the few utility occupations that is shrinking — BLS projects power plant operator employment to fall 5.1% through 2035, with about 2,300 openings a year, nearly all of them replacing people who leave.

If a utility is considering you for one of these roles, the test you will sit is almost certainly POSS, the Plant Operator Selection System.

The pay, in detail

Occupation	Employment	Median	Projected change to 2035	Openings a year
Power plant operators	29,320	$102,040	-5.1%	2,300
Power distributors and dispatchers	8,520	$106,730	+1.2%	700
Nuclear power reactor operators	5,150	$122,890	-5.9%	400
Stationary engineers and boiler operators	28,250	$78,620	+3.1%	3,200

Two things stand out. Nuclear reactor operators are the best paid of the group, with a tenth percentile of $98,640 — the bottom of that occupation pays more than the median of most jobs. And distributors and dispatchers, the control-center roles, have the widest spread of all, from $72,440 at the tenth percentile to $154,270 at the ninetieth.

What the job is

Operators monitor and control generating equipment: boilers, turbines, generators, auxiliary systems. In practice that means watching instrumentation, making adjustments, responding to alarms, running switching and isolation procedures, and documenting everything. Much of it is shift work, including nights, weekends and holidays, because the plant does not stop.

BLS lists the typical entry-level education as a high school diploma or equivalent, with long-term on-the-job training. Nuclear reactor operators are the exception: they complete formal technical training, pass a medical examination and hold a licence from the Nuclear Regulatory Commission, with periodic re-examination to keep it.

What the job actually asks of you cognitively is worth understanding, because it explains the test. You are reading dense procedural documents and applying them exactly, doing arithmetic reliably without a calculator to hand, understanding mechanical systems well enough to know what an abnormal reading implies, and spotting that a pattern of readings has changed. Those are the four things POSS measures.

Where POSS fits

POSS is the EEI battery for operator jobs in fossil, nuclear and hydroelectric plants. It runs to either 118 questions in 67 minutes or 146 in 77, depending on which version of the math test your employer's form uses, and it is made up of Reading Comprehension, Mechanical Concepts, Mathematical Usage and Figural Reasoning. Results are reported as an aptitude index from zero to 15.

The section that catches most candidates is Figural Reasoning: 20 pattern questions in 10 minutes, in an item type most people have never attempted, and the one with the least free material available anywhere. It is also the shortest test in the battery, which means familiarization pays back faster there than anywhere else. Try the Figural Reasoning demo before you do anything else.

If you are being considered for maintenance as well as operations, expect to sit MASS too. EEI's brochure says the two together take about three hours. POSS practice and MASS practice run each battery in its documented order.

A shrinking occupation, and what that means

The projected decline is real and worth planning around rather than ignoring. Generation is consolidating onto fewer, larger, more automated plants, and BLS expects fewer operator jobs in 2035 than today across the fossil and nuclear operator categories.

That does not make the career a bad idea — 2,300 openings a year is still 2,300 openings a year, the pay is high, and replacement demand from retirement is the dominant source of hiring. But it does mean the roles are competitive, that geography matters more than in a growing trade, and that the adjacent occupations are worth keeping in view. Stationary engineers and boiler operators is the one growing category in the table, at 3.1% and 3,200 openings a year, and plant maintenance trades are screened with MASS rather than POSS.

How the hiring runs

The typical sequence at a large utility is application, aptitude battery, interview, background and medical screening, then an offer, with the battery early enough to be a genuine filter. Duke Energy is among the utilities that publish which EEI batteries they use for which job families, and it publishes a 90-day interval before retesting.

Prepare on the assumption that the test comes before anyone reads your experience closely, because it usually does. Full access covers both plant batteries.

Frequently asked questions

How much do power plant operators make?

The May 2025 national median was $102,040, with the tenth percentile at $61,790 and the ninetieth at $131,940. Nuclear reactor operators earn more, at a median of $122,890.

Do I need a degree?

BLS lists a high school diploma or equivalent as the typical entry-level education for power plant operators, with long-term on-the-job training. Nuclear reactor operators additionally need formal technical training and a Nuclear Regulatory Commission license.

Which test do power plant operators take?

POSS, the EEI Plant Operator Selection System. If you are also being considered for maintenance roles you may sit MASS as well.

Is it a good career if the occupation is shrinking?

It pays well and hires steadily from retirements, but employment is projected to fall 5.1% through 2035, so expect competition and be prepared to move for a role. The adjacent maintenance and dispatch occupations are worth considering alongside it.