China is biggest investor in renewable energy. - In 2009, public and private Chinese investment in renewable energy in China is estimated by Pew Charitable Trust at US$34.6 billion, far greater than any other country or region of the world. Investment in renewable energy sources totalled only US$18.6 billion in the United States, US$11.2 billion in the United Kingdom, US$10.4 bn in Spain, US$7.4 bn in Brazil, US$4.3 bn in Germany, US$3.3 bn in Canada, US$2.6 bn in Italy, US$2.3 bn in India,...