Prices for certified emissions reductions have sunk by more than 60 per cent since January 2011 and are expected to fall further. So is there still a market for UN-backed carbon permits?
In an emissions trading scheme driven largely by power sector demand, how do the buying habits of some of Europe's biggest utilities – and emitters – affect EU carbon prices?
Solar was a clear winner in clean energy investment in 2011, trouncing wind to rise by 36 per cent from 2010. But the other big success story was America's strong comeback.
After a pretty awful 2011, glimmers of clean technology opportunities are appearing among the green market wreckage. Troubles in emissions trading, however, may be more deeply rooted.
Commentary
CERs: Buy or sell?
Explainer: Carbon strategies of EU utilities
Green investment: Solar shines, US strikes back
Is the green market rout over?