For a host (server), energy is an intrinsic characteristic reflecting the extent of use by workloads of its compute resources, such as CPU, memory, and disk. Similar to improving the energy efficiency of our homes, making container and host energy visible enables benchmarking that we can act on. Adding that visibility informs strategies for management and optimization.

VMware Aria Operations has the ability to make energy visible:

https://blogs.vmware.com/management/2021/10/sustainability-dashboards-in-vrealize-operations-8-6.html