Even if the most ambitious level of pledges and commitments were implemented by all countries under the strictest set of rules, the analysis shows that there would still be a gap of 8 Gt of CO 2 equivalent by 2020. This is 2 Gt higher than last year’s assessment with yet another year passing by.
Can the gap be bridged by 2020? From a technical standpoint the answer remains yes with an estimated potential to bring down emissions by 17 Gt by the 2020 timeline – the challenge is that current investments in buildings, transportation systems, factories, and other infrastructure are “locking in” high energy use patterns and associated emissions for decades, limiting future options for abating emissions.
The 2012 Report for the first time reviews a number of successful policy actions that have been effective in substantially reducing emissions at the national level. For example, appliance standards, performance standards for vehicles, and economic incentives to reduce deforestation to name but three.