More and more IT companies try to become CO2 neutral by buying the CO2 credits that match the amount of power they use for the IT equipment. The argument is, that if they use 1 ton CO2 to run their servers, then they buy 1 ton CO2 credit from the market, removing 1 ton of CO2 emission elsewhere.
Nice thought but that's not how it works. Buying CO2 credits like that just means that you need 2 ton CO2 credits produce 1 ton CO2, basically increasing the price for emitting CO2. If everybody did this, CO2 emissions would be cut by 50%, but not 100%. The good thing is, that the increased price of emitting CO2 generates additional incentives for developing new energy technologies. However, the IT company still emits CO2.
What makes matters even worse, is that market economy ensures, that if you can spend your money on energy during operating equipment, or energy during manufacturing of equipment, you will spend your money where you get most value. And if the equipment is produced in one of the countries outside the CO2 market (like USA or China), you will basically just push the problem out of the market, but not away from planet Earth.
It is good that companies try to use the CO2 emissions topic for profiling themselves, but nobody gets CO2 neutral by burning coal.