Hardware Sentry, available as an integration on the Datadog marketplace, reports the energy usage of each system monitored in a data center. This solution is 100% software and does not require manually installing Smart PDUs or sensors. Check out how the IT energy usage is reported in Datadog.

Try Hardware Sentry: https://app.datadoghq.com/marketplace
Follow Sentry Software on Twitter:   / sentrysoftware  
Join Sentry Software’s LinkedIn group:   / sentry-software