The Little Book of ENERGY and The City
More people live in cities than ever before due to economic opportunities (cities represent 80% of global Gross Domestic Product) including employment, better services and amenities (UN-Habitat, 2016). Energy is essential for a city to function at all levels, especially if it is to contribute to the national and global economy. Switching to sustainable energy resources and reducing energy consumption are both urgently required as cities consume the majority of energy resources and generate the majority of carbon dioxide emissions. Low carbon technologies for electricity generation, efficient transportation of people and goods, smart distribution of energy and reductions in energy wasted along the way, are all key challenges. However, there is no ‘silver bullet’ for energy in cities – switching to renewable sources; managing demand; encouraging people to change their behaviour and improving the built environment will not, on their own, meet the carbon emissions reductions that will be needed.
source :
https://blog.soton.ac.uk/serg/files/2017/12/littlebookofenergyandthecity.pdf