This chapter does not contain many of the cautions and warnings about specific components and operations that other chapters do. Read the appropriate chapters for specific operations as well as this one.

• 2.1.1 Introduction
• 2.1.2 Impact of Load
• 2.1.3 DC Electricity
• 2.1.4 Current-Limited System
• 2.1.5 Low Voltage Does Not Mean Harmlessness
• 2.1.6 Voltage Drops
• 2.1.7 Connect/Disconnect Sequences

• 2.2.1 Direct (Direct Coupled) DC System
• 2.2.2 Power Point Tracking DC System
• 2.2.3 Self-Regulated DC System
• 2.2.4 Regulated DC System
• 2.2.5 Direct AC System
• 2.2.6 AC System with Storage
• 2.2.7 Mixed AC/DC System

• 2.3.1 Photovoltaic Cells
• 2.3.2 Photovoltaic Modules
• 2.3.3 Describing Photovoltaic Module Performance
• 2.3.4 Photovoltaic Arrays
• 2.3.5 Module Tilt and Orientation

• 2.4.1 DC Loads
• 2.4.2 AC Loads

• 2.5.1 Battery and Other Storage
• 2.5.2 Charge Controllers.