Moving from coal to green energy for Dong (nee Danish Oil and Natural Gas) started in 2008, leading to an CEO change in 2012, to a 2017 divestment of fossil-fuel bases businesses. Perseverance can pay off, but patience goes through trials.
"A tale of transformation: the Danish company that went from black to green energy" | Eric Reguly | April 16, 2019 | Corporate Knights at https://www.corporateknights.com/channels/climate-and-carbon/black-green-energy-15554049/