This manual is an essential supplement to understanding the topics related to the Analysis of Electrical Energy Systems (EES).

The problem statements of the manual are also included in the corresponding chapters of the book with the same title, which develops the necessary theory for their solution. However, the manual, because it includes the problem statements and their solutions, can be used independently by all students of Electrical and Computer Engineering Departments, as well as by young and experienced electrical engineers.

The problems that are solved have been selected to clarify the important issues that arise in solving the difficult problems of EES.

The aim of the manual is to convey to the engineer the thinking methodology for solving problems with traditional and modern methods. Although similar editions to this manual are not common in the Greek and International market, I consider its contribution to the completeness of understanding theoretical knowledge to be extremely valuable.