vSphere 8.0 U1 introduces a new power metric to estimate VM static power.

You can view this power metric in the Advanced pane of the vCenter Performance Monitor page in vCenter. This power metric is a semi-fixed value that is a function of the VM's configuration, specifically the number of vCPUs and memory size as well as the configuration of the host it is running on. VM static power estimates the minimal amount of required power based on the requirements of a physical machine with the same configuration, running on similar hardware as the ESXi host. A VM may report different values of static power on two different hosts, if one host is more power efficient than the other. This is useful for dynamic workload placement strategies to optimize for overall power and may help estimate energy savings due to virtualization of workloads.