With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
cewLevelIndex
Cisco EnergyWise Level Index
1.3.6.1.4.1.9.9.683.1.7.1.1
This object indicates the level for which this entry describes the power usage.
Back to CISCO-ENERGYWISE-MIB MIB page.
IPHost Network monitor allows you to monitor cewLevelIndex on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco mobile switches right now.