This document discusses power quality and issues related to power quality. It provides details about various power quality problems like sags, swells, interruptions and their causes. It also discusses the industries that are highly affected by power quality issues like semiconductor plants, data centers etc. and estimated costs of power quality problems. The document further provides details about components of a power quality monitoring system including power meters, data storage and analysis software. It describes the microcontroller used in the proposed power analyzer and controller system and includes circuit diagrams and photos of projects developed by students.