 There is great interest in solar power in China.The world's market share of China's photovoltaic units manufacturers had grown from approximately 1% in 2003 to 18% in 2007, one of the largest Chinese manufacturers of these devices being the wholly Chinese solar company (Suntech).Although the overwhelming majority of the photovoltaic units are exported, plans are under to increase the installed capacity to at least 1,800 MW by 2020.