Leszek Kowalczyk & Jakub Piotrowski 
Energy Costs, International Developments and New Directions [PDF ebook] 

Energy is an essential factor in development, since it stimulates, and supports economic growth, and development. Any form of energy can be transformed into another form, but the total energy always remains the same. Several different kinds of energy exist to explain all known natural phenomena. These forms include (but are not limited to) kinetic, potential, thermal, gravitational, sound, light, elastic and electromagnetic energy. This book discusses new developments in this field, as well as the impact that renewable energy, and alternative energy might have in the future.