AWS claims to be on track to power 100% of their datacenters with renewables by 2025[1]. GCP is carbon neutral right now (probably with renewable power credits or carbon credits) and is on track for similarly 100% renewable by 2030[2]. Microsoft, including Azure, plans 100% renewable energy by 2025[3].
1: https://sustainability.aboutamazon.com/environment/the-cloud
2: https://cloud.google.com/sustainability
3: https://azure.microsoft.com/en-us/explore/global-infrastruct...