By far the most populous country of Africa (with 177 million inhabitants in 2014), and consequently the first GDP of the continent, Nigeria is a member of the OPEP and has a large amount of oil resources, which represents the major part of its economy. The rest of the GDP is mainly divided between the agriculture sector and artisanal production. The electrification rate of the country is rather low: in 2012, only 55.6% of the population had access to electricity. The lack of infrastructure affects mainly the rural and poor populations. To overcome the inexistence and the low reliability of the electricity distribution in several areas of the country, the rural populations invest in diesel generators, which are expensive and polluting.