As negotiations continue at the UN’s Copenhagen Climate Change Conference, a new report by Exxon Mobil said energy demand will be about 35% higher in 2030 than it was in 2005.

Exxon Mobil said rising energy demand over the coming two decades will require investment in all potential sources. However, the UK’s Met Office warned that carbon emissions must begin to fall within the next ten years to limit the global temperature rise to the crucial 2°C level.

Scientists told the conference that even if this target was hit and emission levels peaked in 2020, there was still a 50% chance of the world’s temperature rising above the dangerous 2°C level.

Exxon Mobil’s New Outlook for Energy: A View to 2030 report said that demand would require trillions of dollars of investment and a commitment to innovation.

Leaders from more than 190 countries are at the Copenhagen talks, which are aimed at keeping temperature rise below 2°C.