Power Grid Operator Exam Prep

Power Grid Operator Exam Prep is an independent trainer for the four System Operator Certification examinations of the North American Electric Reliability Corporation (NERC): Reliability Coordinator (RC); Balancing, Interchange and Transmission (BT); Transmission Operator (TO); and Balancing and Interchange (BI). ONE BANK, FOUR CREDENTIALS All four examinations are drawn from the same six content domains and the same 31 knowledge areas. What changes between them is only how many scored questions each area carries — and that table is published. Pick your credential and the whole app re-weights: your readiness estimate, the order of your weak areas, and the way a mock paper is sampled. Every answer you give counts towards all four. SCORED THE WAY THE EXAMINATION IS NERC passes candidates on an absolute cut score, not a percentage: 92 of 120 for RC and BT, 76 of 100 for TO and BI. So the headline figure here is a projected score out of the paper, and the weak-areas list ranks knowledge areas by how many scored questions they are actually costing you — an area worth five questions that you are shaky on outranks one worth a single question you have never seen. MOCK PAPERS SAMPLED TO THE OUTLINE A mock paper draws exactly the number of questions the published content outline lists for each of the 31 knowledge areas — not an even split. Three hours, flag and return freely, no feedback until you submit, then a full review with an explanation and a reference on every question. A CONTROL ROOM THAT IS DIFFERENT EVERY TIME Two generated displays, rebuilt from scratch each time you open them: • a six-bus one-line with its flows, ratings and an N-1 contingency analysis report — read the percentage column, find the worst contingency, work out the post-contingency margin, decide what the exceedance obliges you to do; • a Balancing Authority AGC control board — frequency, interchange, bias, reserve and the units on AGC, with the ACE left for you to calculate. Plus twenty calculation drills with worked solutions: ACE, governor droop, frequency response, rate of change of frequency, three-phase power, the power triangle, per unit, capacitor output at depressed voltage, line losses, post-contingency margin and load relief. 1,224 ORIGINAL QUESTIONS Written from the freely published sources — the four content outlines, the NERC Glossary of Terms and 60 currently enforceable Reliability Standards — and every batch checked again by a separate pass against those same sources. Each question carries NERC's own cognitive level: recall, application or analysis. ALSO INSIDE • 31 Library reference cards — seven must-know numbers and a short essay each • Spaced repetition: a question you miss comes back, on a schedule • Works entirely offline. No account, no sign-in, no data collected. • iPhone, iPad and Mac, light and dark, with a manual override for a night shift. Progress stays on the device you study on. NOT AFFILIATED Power Grid Operator Exam Prep is an independent study aid. It is not affiliated with, endorsed by, or connected to the North American Electric Reliability Corporation, its Regional Entities, or Pearson VUE. NERC, the credential names and the examination codes are used only to identify the examinations this app prepares for. All content is original work. Reliability Standards are revised regularly. Verify any requirement against the currently enforceable standard at nerc.com, and against your own entity's operating procedures, before operational use.