Sustainable green energy strategies are definitely required to ensure the global stability by reducing ARTICLE IN PRESS
21st Century Sustainable green energy strategies YES future TRANSITION to green energy and technologies GREEN ERA 21st century and beyond green energy based life future High living standards Reduced global problems Advanced technologies Clean air and environment Reduced environmental impact No energy shortages Low-operating costs
No conflicts and wars Increased sustainability High global stability and peace Fuel cell technologies Nano technologies
Advanced IT Peace and freedom Technological innovations .............. 20th Century fossil- and partially green energybased life wrong
choice
Increase of energy demand
Fossil energy depletion
Global problems and poverty
High-operating cost
High global unrest
Low global stability and peace
International tension and conflicts
Industrial crises
Energy shortage and world wars
Ozone layer depletion
Global warming and disasters
Global pollution and aridity
Low living standards
R: Results
Ex: Expectation
right
choice
Ex.
R
Fig. 7. Chart of green energy strategies and technologies for sustainable development.
A. Midilli et al. / Energy Policy 34 (2006) 3623–3633 3631
the harmful effects of the fossil-based energy consumption.
So, it is suggested that the importance of green energy and technologies that probably reduce
the world problems and achieve a sustainable energy
system should be emphasized considering the sustainable
energy strategies. Moreover, a transition to the
green energy-based economy should be encouraged,
and developed countries, in particular, should increase
investments in green energy and technologies.