Energy environmental and climate policies are inextricably linked. All energy production and consumption has environmental and climate impacts. Whilst it is often tempting to overlook the environment during difficult economic times, the challenges of producing and using energy resources sustainably and protecting our natural environment equally represent an opportunity to pursue sustainable economic growth. Environment deterioration including climate change is one of the greatest challenges of our time and the top environmental priority. In order to cope with the challenges of climate change and promote sustainable development an ambitious and cohesive climate and energy policy is needed at international level. This special issue is to bring together professional opinions on the energy, environmental and climate policy.