Artificial leaves can generate energy as plant do using the same approach as photosynthesis!
This could be a great approach for a sustainable way to produce energy.
Prof. David Nocera from Harvard University developed this approach and find out the way to turn the solar light into chemical fuels.
Read more about this topic and find out how artificial leaves work in this article: http://www.nature.com/news/solar-energy-springtime-for-the-artificial-leaf-1.15341
Noughty Science 