Change in search methodology: Specific Paper
I found this paper by Veldhuis and Reinders, 2012 on review the potential of solar PV in Indonesia. It is beautifully written, it has clear methodology, data and explanation. So instead of previous strategy using keyword based, I will try to use search by context based. Well it should be a good news. The strategy by selecting the most interesting paper and track all the references might be effective. So hopefully on the next days I will start to focus by choosing the most effective paper.
I also found that global potential of renewable energy is interesting subject (check here and here). Solar potential also interesting, but maybe it is too broad for my focus. But let see, things getting better and better.