Problem-solving for today's energy issues requires an understanding of the interplay of technology, policy and economics. Both energy conservation and developing innovative energy conversion technologies will play a significant role in solving our energy problems. This blog is currently authored by an (Nari) and was previously co-authored also by (Pradeep). We believe that a mix of clean energy technologies is the key to a more sustainable world. Therefore, a variety of energy technologies, ranging from solar photovoltaics to clean coal technologies are discussed in this blog. Further, we also discuss many demand side solutions which look at issues from a whole system perspective!