In the Oracle ILOM web interface, you can view the average power consumption for each minute of the last hour or for each hour of the last 14 days. Historical power consumption data is not viewable from the Oracle ILOM command-line interface.
For instructions, see Accessing Oracle ILOM.
Analyzing Power Usage Statistics, Oracle ILOM Administrator's Guide for Configuration and Maintenance, Firmware Release 3.2.x at http://www.oracle.com/goto/ilom/docs