Abstract
Provided that LED street lighting is guided by quality principles, outdoor illumination using light-emitting diodes will have a significant global impact helping to reduce carbon dioxide emissions, save relevant amounts of electricity and enhance the quality of life in cities as well as in remote areas. This study summarizes recent findings providing guidelines for further progress in this crucially important technology on the common pathway to sustainable development.
About the authors

Rosaria Ciriminna is a chemistry scholar in the top 1% of most cited chemists based at Palermo’s Institute of Nanostructured Materials of Italy’s Research Council. Her widely published research in the field of green, nano- and photochemistry is developed in cooperation with several research Groups worldwide. Her interest in solar energy is reflected in books, articles and educational activates besides the graduate and undergraduate students mentored every year.

Lorenzo Albanese is a researcher at National Research Council’s Institute of Biometeorology based in Florence, where he works along with Dr Meneguzzo at several research projects aimed to reduce the energy input, and improve the outcomes, of new food processing technology. His recent articles on the great solar boom detailing the progress and impact of solar PV technology has been widely covered by the press.

Francesco Meneguzzo is a physicist based at Florence’s Institute of Biometeorology of Italy’s CNR where he coordinates a research Group active in a vast field of research domains, including energy, propulsion, agri-food processes and geophysics. His recent achievements include the development of an entirely clean production and sanification process applicable to liquid foods based on the hydrodynamic cavitation technology. As weather forecaster he has established Tusacany’s Regional Met Service Tuscany (1996-2002), later to become the well-known LAMMA weather forecast center. Currently, he chairs the organization committee of SuNEC 2016 conference on solar energy.

Mario Pagliaro, co-founder of Sicily’s Solar Pole, is a chemistry and solar energy scholar based at Italy’s CNR. His research Group achievements include 150 research articles, 20 books, and numerous book chapters. A Fellow of the Royal Society of Chemistry, Mario’s research interests are in the broad areas of nanochemistry, solar energy, sustainability and management. Between 2011 and 2015, he has chaired the “SuNEC-Sun New Energy Energy Conference” and the “FineCat-Symposium on heterogeneous catalysis for fine chemicals” held every year in Sicily. Since late 2015 he is the president of Palermo’s municipality energy company AMG Energia.
Acknowledgments
This article is dedicated to Dr Ian Ashdown, eminent lighting scientist currently at Lighting Analysts, for all he has done to advance the practice of LED lighting. An anonymous reviewer is gratefully acknowledged for careful consideration and very valuable suggestions.
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