Reuters: Societe Generale cut its forecasts for European Union industrial emissions, saying an EU recession may depress EU carbon permit prices for years. Prices for carbon permits traded under the EU’s Emissions Trading Scheme in 2009 could average 17 euros a tonne, down a third from a previous forecast of 25.5 euros, it said. “Prospects on emission levels for 2008 and 2009 reduce every day, with an increasing number of industrial firms announcing temporary shutdown … and downward …