Materials and Technologies for Energy Efficiency is a compilation of research papers whose main aim is to provide an opportunity to gather knowledge about the latest developments and advances in materials and processes involving energy. This volume consists of a series of works which were presented at The Energy & Materials Research Conference (EMR2015), held in Madrid, Spain in February 2015. This compilation of more than 50 papers has been written by researchers from all over the world. Papers focus on topics including biomass and biofuels; solar energy; fuel cells; energy storage, etc. The book is recommended for researchers from a broad range of academic disciplines related to energy and materials. We hope that this set of papers would be useful to stimulate further discussion...

What can we do to preserve a future for the next generation to cherish? A potent answer is to exercise good stewardship in realizing more sustainable living and development. This volume brings together experts from around the world to disseminate the latest knowledge and research toward this end, i.e., engineering for more sustainable development and living. Let us learn from a living cell that utilizes inherited biological intelligence to organize its resources for current needs and future existence. We also have the responsibility to ensure universal access to electricity and increase the share of renewable energies. Cost effective hybrid renewable energy systems should also be considered and furthered. Advancing energy storage is a necessary striving for managing a future "toilet paper ...