Carbon Swings Hit Year High Amid Supply Concern

European Union emission permit prices are swinging in the widest range since January 2012, encouraging speculation that may be exacerbating losses amid a supply glut.

Thirty-day historical volatility for December carbon allowances rose to 78 percent yesterday on ICE Futures Europe in London, the highest in a year, according to data compiled by Bloomberg. The benchmark contract has fallen in 18 of the past 22 sessions and slid 20 percent last week, its biggest drop since the five days through June 24.