The European Union's executive body presented first ever plans to boost EU carbon prices, a controversial effort to fix the problem of low prices that has been crippling the EU market for years, raising questions about its own existence.

Wednesday, the European Commission released a proposal to slow down the pace at which permits to emit greenhouse gases--which are called allowances and give the owner the right to emit one metric ton of CO2-- are sold on the Emissions Trading System. Less allowances on the market should create a shortage that would in turn boost prices.

"The EU ETS has a growing surplus of allowances built up over the last few years," Connie Hedegaard, EU commissioner for Climate Action, said in a statement. "It is not wise to deliberately continue to flood a market that is already oversupplied," she added.

Low prices have been the main, underlying problem of the ETS and has been calling into question the effectiveness of what the EU considers its flagship program to cut greenhouse gas emissions. At the same time, any effort to boost prices is controversial because some industries only see higher CO2 prices as a cost increase and oppose any action.

On the ETS, companies exchange emissions permits, whose number is capped. The system aims to encourage companies to invest in clean technologies to reduce their emissions in the long term, rather than buying more permits to emit more CO2.

In theory, the higher the price, the higher the incentive to invest. Critics, however, have highlighted that the mechanism hasn't yet been able to push the carbon price high enough to be a trigger for large green investment.

Prices have hit record lows this year on a growing oversupply of allowances in the market and expectations that the situation will not change even after an overhaul of the ETS next year. Companies have in recent years needed less permits because the economic downturn has reduced industrial activity and therefore CO2 emissions, adding to a historical oversupply of emissions permits.

Starting next year, the allowances will be auctioned to companies according to a plan running to 2020. The commission proposed Wednesday to auction less permits in the first three years --an operation called backloading-- but hasn't put forward a precise number, leaving it to the European Parliament and the EU member countries to discuss how many allowances should be sold later.

A commission analysis however, also released Wednesday, presents three scenarios picturing a rejig of the auctioning timetable for 400 million, 900 million or 1.2 billion allowances.

The number is one of the most controversial issues, with environmentalists calling for a backloading of as many as 2 billion permits.

The commission also presented a proposal to legally clarify its powers in altering the auctioning timetable, which will have to get a green light from Parliament and EU governments.

CO2 emissions futures for Dec. 12 were trading slightly over EUR7 on Wednesday after the announcement, according to ICE data.
They have touched lows around EUR6 in the past.