@killyourfm Here are some people and organizations you could check out if you want to learn more about energy efficient software
the software and sustainability research group https://s2group.cs.vu.nl/
https://www.thegreenwebfoundation.org/ which build the awesome CO2.js library
@fershad who works for the green web foundation and has a CO2 aware homepage
https://www.blauer-engel.de/en/productworld/resources-and-energy-efficient-software-products a German certificate. Super cool fact: the first software to get the certificate is #KDE #Okular