EEI practice tests for utility jobs.

The Edison Electric Institute runs an employment testing consortium for US electric utilities, and its batteries are aptitude tests used by many investor-owned utilities for craft, plant and technical hiring. The five we cover are CAST and its revised version CAST-R (construction and skilled trades, including line workers), POSS (power plant operators), MASS (plant maintenance trades) and TECH (technician roles such as lab, relay, telecom, drafting and estimating).

Your employer decides, and the invitation letter usually says. As a rough guide: line worker, substation and meter service roles sit CAST or CAST-R; power plant operator roles sit POSS; plant mechanic, machinist, electrician, welder and pipe fitter roles sit MASS; technician roles that usually need an associate degree sit TECH. Some utilities administer POSS and MASS together in one longer session.

Nobody publishes one. EEI's CAST brochure says cutoff scores can be tailored to local company employment needs, and no US utility publishes its number. Any specific figure you see online is a guess, so we do not print one.

No. Utility Tests is independent and is not affiliated with, endorsed by or connected to EEI or any utility. Every question, drawing, passage and statement here is original and was written from publicly published descriptions of the sections, so the look, timing and scoring will not be identical to a real test.

It depends on the employer. The only EEI statement permitting one covers Graphic Arithmetic in CAST-R. Most employers don't publish a rule, and at least one (Southern California Edison) bans personal electronic devices, calculators included, from the testing room. Practice both ways and assume you will not have your own unless your invitation says otherwise.

Yes, and you should use it first. EEI runs its own candidate practice site, and several utilities publish the access details on their public testing pages at no charge, including Entergy, LG&E and KU, Dominion Energy and Arkansas Electric Cooperative. Entergy and Dominion Energy note that the practice tests are shorter than the real tests and differ slightly from them. Our practice is independent and adds original items, explanations and full-length timed runs on top.

Standard ($29) unlocks unlimited practice and timed runs for the five CAST and CAST-R sections: Graphic Arithmetic, Mechanical Concepts, Reading for Comprehension, Mathematical Usage and the Work Preferences Inventory. Complete ($49) adds Figural Reasoning and Assembling Objects — the sections that make POSS and MASS different — plus full timed mock tests for CAST, CAST-R, POSS and MASS. Standard owners can upgrade for $20. TECH ($29) is a separate plan for the technician test: its four question types and a full practice mock.

No. It is a one-time payment with lifetime access and no recurring charge, which matters when retake waits at some utilities run to six months. If it is not right for you, contact us within 14 days for a full refund.

Yes, every section works on phones and tablets. The real test is taken on a computer or on paper at a test center, so a desktop or laptop gives the most realistic practice — particularly for Graphic Arithmetic, where you need to see a whole drawing at once.