People like to assume that "developing nations" must do the SAME as they did..
ie: Fire -> Steam -> Coal -> Oil -> "natural sources" (i.e.: Solar/Wind/Hydro) and/or Nuclear.
Developing nations that have capital and resources (China and India) have the option of skipping "legacy" tech in favor of newer forms of power to leap frog into become giants.. (they don't have any legacy infrastructure or group that are fighting to keep "old tech" so they can go directly to newer/better forms.. If you are starting from scratch, technically speaking with the exception of nuclear (only because the materials used are expensive), they are all relatively the same cost. Solar/Wind/Hydro don't scale as fast/easy as some others.. but they can be cheaper to implement and you can build "micro grids" rather than larger grids.. (with many micro-grids its easy to tie a macro grid on top later).
A lot of economists are banking on China, India and other large developing nations will other tech simply because it doesn't help their long term goals and puts them into the SAME problem the US and others have with Coal/Oil/Gas.. namely legacy tech that now is in competition of newer tech.. (its like buying motorcycle because you are single, but knowing you are dating someone (and will eventually need car, then a larger car).. The Motor cycle is slightly cheaper than the larger car, but if you are smart (knowing the sort of person you are dating) will save a little longer and get the larger car (saving a lot of money in the long term for some short term pain)