This article explains the challenges of achieving the Net Zero target by 2070 as India announced at the COP 26 summit. There are some serious challenges in this effort like how to manage the extra GHGs released in the past that will remain for many years; whether to consider the total magnitude or per capita figure; similar deadlines for both developed and other countries with resource constraints; strategies for intervening years; stranded capital due to shifting to fossil fuel; other problems with renewal energy sources, etc. It also provides possible remedial measures to overcome many of these challenges.