Procurement

State think-tanks suggest government impose carbon tax scheme by 2013

Move comes as German lobby group mulls legal action to tackle alleged dumping of subsidised solar panels in European market

Government cuts duty by 50 per cent on components used in solar, wind and geothermal power plants

Oil group also signs pact for China production of coal gasification equipment

IFC to review environmental performance of investments in the sector

Move follows US and EU allegations that China's stockpiling of minerals creates unfair advantage

Overseas polysilicon suppliers say shipments to Chinese solar wafer makers have been impeded

Report praises office suppliers for avoiding paper from unsustainable sources, but slams retailers such as Walmart and Amazon.com

Row between green groups and farmers highlights cattle industry's links to rainforest palm oil plantations

Firms that sign up to Boris Johnson's Green Procurement Code to receive advice toolkit