A new study concludes that the "carbon budget"--the total amount of carbon that can be emitted to keep global warming at 2 degrees Celsius--will likely be exhausted in 15 to 30 years. That means there can be no carbon emissions after that if the 2 degree goal is going to be met. This study included analysis of emissions of greenhouse gases other than carbon dioxide, such as methane, which increase the urgency of the problem.
Obviously, neither the Clean Power Plan goals nor even Minnesota's Next Generation Energy Act goals are on anything like that pace. The concept of a "carbon budget" is controversial, but It is becoming more certain every day that we will need to adapt to warming in excess of the 2-degree target that drove the Paris accords.