Completely updated design and installation textbook/guide to commercial and large residential solar PV systems! UPDATED August 2022! It is the advanced-level study guide that builds upon lessons learned in the introductory text, Understanding Photovoltaics . This study guide builds upon a foundation of knowledge in residential solar PV installation and expands into the field of commercial project installation and project management. This text is designed to help prepare students who wish to sit for industry-accepted certification programs such as the ETA Level 2 PV Certification or the NABCEP PV Installer or Designer Certification Program. Each chapter contains multiple choice review questions. This 600-page textbook includes the following chapters: Introduction to Photovoltaics How the Grid Works Ownership Options & Permitting System Options (Grid-tied, AC coupled, DC coupled) Conducting a Site Survey Selecting the Components Codes, Standards and Listings Selecting the Components Sizing the Array Wiring the System Energy Storage Systems PV Mounting Systems Managing the Project Project Safety Testing and Troubleshooting Commissioning the System Maintaining the System also included... Chapter Objectives 300+ Chapter Review Questions (with answer key) Hundreds of Illustrations and Tables Easy-to-Read narrative Summary of Formulas Listing of Acronyms Highlighted and Indexed Terms Updated with Changes from the 2020 NEC