With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
cewEntEnergyUsage
Cisco EnergyWise Ent Energy Usage
1.3.6.1.4.1.9.9.683.1.6.1.8
This object indicates the current usage for the Cisco EnergyWise entity. This should be less than or equal to the power that can be consumed at that specified level.
Back to CISCO-ENERGYWISE-MIB MIB page.
IPHost Network monitor allows you to monitor cewEntEnergyUsage on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco firewalls right now.
