This concise guide, written by a power electronics engineer, provides you with the practical information that you need to know in order to choose the right emergency power generator for your needs. The guide discusses standby and portable electric generators in minute detail. It also presents an overview of battery-based backup systems. For each type of electric generators this Home Generator Guide provides principles of operation, pros and cons, lesser known details, charts with comparative characteristics of the popular brands, cost estimation, step-by-step sizing procedure and transfer switch wiring options. The guide explains some common mistakes made in determining the required generator size. In conclusion the author offers his generator picks depending on your requirements and budget. This is 3nd Edition (2021).