Thankyou @sallykwitt... actually its not Politics... These renewable sources have potential but aren't sufficient enough to generate power that can be sufficient for entire country... In my Bachelors, I did project on Thermoelectric Materials... I was amazed to see that max conversion efficiency these materials have is just 12% untill then... so, we can't rely on these as power generators...
Moreover there are lot of issues as well... we need to research alot more in these specific fields...