This book helps you build, fast and easy, a solar power system for your off-grid home, cabin or RV, camper, and boat. It comprises a collection of two books, exceptionally well-received by the broad solar In the first part, the authors, who are qualified experts and engineers , take you by the hand and reveal you step by step the secrets of the building blocks of the off-grid and mobile solar power systems in a simple way that even a fifth grade student could understand. Finally, you will be able confidently to select the equipment of your dream solar power system to build it according to your unique needs. No more frustration and disappointment that your solar case turned out to be completely different from the book author's one, as usually happens with many other solar books. In the second part of the book, the authors build further on solar component secrets to introduce you simply and gradually to the solar system sizing and installation without using complicated math and technical language . You are shown step by step a thoroughgoing design of a 12V mobile solar power system for your camper or boat and a more powerful 24V solar system for your off-grid home, cabin, or lodge. As a result, you will be able to build various off-grid and mobile solar systems for any nominal solar system voltage and know what you are doing. Nothing is held back. The book series contains NO fluff or complicated technical jargon, language, and math…. just actionable information. G et started with your solar project today!