But figures from Climate Change Capital, a specialist finance house, suggest that the new limits may not do much harm.
According to Tony White of Climate Change Capital, all the money for the first came from hedge funds, which like risk.
Ben Caldecott is Head of UK & EU policy at Climate Change Capital (CCC), an environmental investment manager and adviser.
If we are to meet the pressures of climate change, capital and maintenance investment will simply need to increase.
He focused on Russia's investment climate and capital flight, but at times alluded to political tensions and seemed to refer to his own predicament.
"If you are not in the market then it's rational to wait," says James Cameron, vice-chairman at Climate Change Capital, which manages CDM investments.
Climate Change Capital, a niche investment bank, raised $130m for its first carbon fund, launched in July 2005; its second, launched a year later, is now worth around $1 billion.
For Ben Caldecott, head of the British and European Union policy department at Climate Change Capital, a London-based environmental investment manager, the answer is clear.
Caldecott, who has a background in private sector green banking at Climate Change Capital, was formerly an advisor to the UK Green Investment Bank commission.
James is a main board member of Climate Change Capital and represents the firm at the highest levels of business and government.
