Book excerpt: The evidence suggests that many solar programs are being designed and implemented in isolation and without reliance on published guidelines or the experience gained by others. The conclusion is obvious: the likelihood of a program being successful would be greatly improved if program implementers were made more aware of best practice guidelines and of the lessons and experience learned by others in implementing previous programs. Furthermore, the best practice guidelines not only need to be readily available but need to describe the stages, issues and the stakeholders’ roles in designing and implementing a SHS program. This book showcases a detailed road map that has been developed for the implementation of rural electrification projects in developing countries using solar PV. Features of this book will be case studies derived from personal participatory observation of the authors on Solar Home Systems, their impact, their advantages and disadvantages and their operation.