At the outset of 2012 - the United Nations' International Year of Sustainable Energy for All - access to modern energy services remains low or non-existent for approximately 2.8 billion of the world's population. Energy practitioners worldwide are facing the challenge of delivering access to modern energy services where poverty and lack of infrastructure makes it most difficult. Rising awareness about both climatic change and the notion of energy security for future generations are also being channelled into the debate. This book provides an overview of existing energy delivery systems, as...