Doha: fighting climate change best hope for UK economy The sector grew at 4.7 per cent in 2011 while most of the economy was struggling. Low carbon products and services could be adding £20 billion extra in annual GDP and knock £0.8bn off the trade gap by 2015, according to the CBI. Mr Barker insisted that the low carbon sector must "pull its weight" on ensuring subsidies provide value for money for the taxpayer. But insisted those subsidies would be worth it as the world shifts from fossil fuels to more low carbon options. "Those people who think that low carbon growth is about creaming subsidies fail to understand the massive potential of low carbon good and services abroad," he said. If like me you believe in the long term potential of the market for low carbon goods and services and green growth you should not be afraid of demanding as much rigour from that sector as any other sector of the economy. That means innovating on new technology, scaling up solutions faster, bringing down costs where possible and relying less on subsidies. His comments come as 12 Tory MPs confronted David Cameron about the perceived lack of support for the green agenda by the Tory party. The concern is that Coalition partners the Liberal Democrats are stealing all the glory on green issues, while the Tories look backward. Mr Barker said the UK would be pushing for an ambitious target global deal on climate change by 2015 that will commit the world to reducing carbon from 2020. But at the moment the talks are at deadlock. Poorer nations want $100bn (£60bn) per annum by 2020 to help them switch to green energy and adapt to climate change. They also want compensation for "loss and damage" written into the text, that could mean setting up insurance funds and cost billions. In addition, the rowing EU needs to resolve internal differences and sign up to second commitment period of the Kyoto Protocol. Scandinavian countries and some developing countries want the talks to discuss ending subsidies for fossil fuels, that are currently higher than the payouts for renewable energy. Mr Barker warned that if the stalemate continues the world is heading for another climate change summit like the one in Copenhagen in 2009, where world leaders failed to reach agreement. He said the UK, that has already spent £1.5bn on climate change finance, will be pushing for more investment from other countries and the private sector as well as more ambitious climate change targets. This is not going to be a break through meeting but that does not mean to say it is going to be a bad meeting what we have to do is follow through on the commitments made last year in Durban ie a second commitment period on the Kyoto Protocol through to 2020 and put the building blocks in place for a global treaty by 2015. If we wait to the last minute to do that we will have Copenhagen all over again so it is really important to get a sense of momentum coming out of Doha.