All poverty is institutional and societal poverty. People are poor not because of lack of energy, but because the societies they live in lack the inclusive institutions that can create those patterns for energy use, education, healthcare and anything else.
When you put those institutions in place, the effect manifests itself as economic growth, energy use, increased education etc., which in turn strengthen those political institutions, which in turn beget more growth.
Sorry to nitpick an article that primarily talks about energy, not development, but we need to agree on the root problem. If aliens drop an unmovable fusion reactor in Rwanda tomorrow that can output enough free energy to reach western levels, that will probably not lift the country out of poverty but start a bloody civil war about who owns it and can sell the energy to everybody else.