LyrArc Article Gist
It took Panasonic 6 years to get its Wuxi factory near Shanghai, China, to near net zero carbon dioxide emissions. It was tough say company executives. Panasonic has a job on its hands. It would take 37 such efforts to neutralize the 2.2 million metric tons of greenhouse gas emissions of the company's operations. When suppliers are included this is only 2% of the 110 million metric tons associated with Panasonic.

To get an idea of how much this is- it is the same as  half of Spain's annual emissions, and five times that of Apple Inc. Zeroing out emissions would take till 2030, or beyond, depending on how much pressure there is from customers, investors and government. It is this pressure from all sources that is making the 100 largest corporate emitters to take notice and take action on climate change. Solar panels are only part of the action, every part of company operations has to be examined and changes made including energy saving so that less energy is needed in the first place. 

For companies taking such action this report by WSJ on Panasonic Wuxi is a lesson on how it is done, step by step.