By definition Renewable energy originates from non-depletable sources (can a source really be considered as such? Energy is neither created nor destroyed)
Renewable energy sources are considered as sustainable and environmentally efficient.
Renewable energy adoption, is on a minimal scale implemented in our African nations, from solar panels, to small scale windmills, and hydro power.
Have you thought of biogas as renewable Energy as well?
If you have, then you will notice Renewable energy is a well known practice in Africa.
The use of third world is pejorative and subjective, as the world can be classified using rankings. We rather have in Africa, lesser disciplined abilities towards the utilisation of resources, whether human, physical, social and economical.