in 2021 to assist critical public spending. Energy and power , 50% of Africa was rural with no access to electricity. In 2021, Africa generated 889 TWh of electricity, amounting to 3.13% of the global market share. Many countries are affected by power shortages. The percentage of residences with access to electricity in sub-Saharan Africa is the lowest in the world. In some remote regions, fewer than one in every 20 households has electricity. Because of rising prices in commodities such as coal and oil, thermal sources of energy are proving to be too expensive for power generation. Sub-Saharan Africa is expected to build additional hydropower generation capacity of at least 20,165 MW by 2014. The region has the potential to generate 1,750 TWh of energy, of which only 7% has been explored. The failure to exploit its full energy potential is largely due to significant underinvestment, as at least four times as much (approximately $23 billion a year) and what is currently spent is invested in operating high cost power systems and not on expanding the infrastructure. African governments are taking advantage of the readily available water resources to broaden their energy mix. Hydro Turbine Markets in sub-Saharan Africa generated revenues of $120.0 million in 2007 and is estimated to reach $425.0 million. Asian countries, notably China, India, and Japan, are playing an active role in power projects across the African continent. The majority of these power projects are hydro-based because of China's vast experience in the construction of hydro-power projects and part of the Energy & Power Growth Partnership Services programme. With electrification numbers, sub-Saharan Africa with access to the Sahara and being in the tropical zones has massive potential for solar photovoltaic electrical potential. Six hundred million people could be served with electricity based on its photovoltaic potential. China is promising to train 10,000 technicians from Africa and other developing countries in the use of solar energy technologies over the next five years. Training African technicians to use solar power is part of the China-Africa science and technology cooperation agreement signed by Chinese science minister Xu Guanhua and African counterparts during premier Wen Jiabao's visit to Ethiopia in December 2003. The New Partnership for Africa's Development (NEPAD) is developing an integrated, continent-wide energy strategy. This has been funded by, amongst others, the African Development Bank (AfDB) and the EU-Africa Infrastructure Trust Fund. These projects must be sustainable,