At the conclusion of the recent COP20 in Lima, Peru, all countries agreed to make cuts to their fossil fuel emissions and submit their Intended Nationally Determined Contributions (INDCs) to UN in the spring of 2015. Additionally, the Lima deal will also compare emission reductions among countries and see how the collective contributions stack up against the global commitment to limit global warming to less than 2°C.

A recent report issued by the Deep Decarbonization Pathways Project (DDPP), Pathways to Deep Decarbonization in the United States, shows how the US can reduce greenhouse gas emissions by 80 percent by 2050, using existing or near-commercial technologies, in line with the 2°C limit on warming.

Do you have questions on how the US can reduce its emissions, the associated costs, policy implications, technological & energy transformations, etc.?

@UNSDSN is hosting a live Twitter Q&A on Friday, December 19, from 1-2PM EST with Dr. Jim Williams, chief scientist at E3 and lead author on the US DDPP Report. You can send in your questions before and during the live chat on Twitter or Facebook by using #USDDPP! Click here to find out what time the chat will be in your part of the world.


UPDATE: Due to a scheduling conflict, the Twitter chat responses will be provided by Ben Haley, E3 Consultant, who led the analysis to chart viable pathways for both California and the U.S. to reach their long-term 2050 climate policy goals.

The US DEPP report was authored by researchers at the U.S. Department of Energy’s Lawrence Berkeley National Laboratory (Berkeley Lab), Pacific Northwest National Laboratory (PNNL), and San Francisco-based consulting firm Energy and Environmental Economics, Inc. (E3). The report is one of 15 DDPP country studies that are part of the global DDPP, a joint initiative of the Sustainable Development Solutions Network (SDSN) and the Institute for Sustainable Development and International Relations (IDDRI).

Dr. Williams is chief scientist at E3, where he helps to maintain the high technical standards the company is known for. With more than 20 years experience in the energy industry, he has worked in many areas of electric power system technology, economics, and regulation. His practice areas include Energy and Climate Policy; Renewables and Emerging Technology; and Energy Efficiency and Demand Response. He also leads E3’s China energy practice. Dr. Williams was until recently an associate professor of international environmental policy at the Monterey Institute of International Studies. His research focused on the transition to a low-carbon economy at different temporal and geographic scales. He has also taught at U.C. Berkeley and Stanford.


COP20 full draft text (pdf)

Pathways to Deep Decarbonization in the United States (pdf)


Crossposted to State of the Planet