Got a response from TAC. Hope this helps anyone else.
CSCto59387 Bug Details
http://tools.cisco.com/squish/e4453
NRGYZ:ERROR:Database uninitialized when walking CISCO-ENERGYWISE-MIB
Symptom:
Syslog message "NRGYZ:ERROR:Database uninitialized" is printed when performing a snmpwalk
Conditions:
snmpwalk is performed on the CISCO-ENERGYWISE-MIB
Workaround:
Create a view to exclude the CISCO-ENERGYWISE-MIB
snmp-server view EXCLUDE-ENERYGYWISE-MIB iso included
snmp-server view EXCLUDE-ENERYGYWISE-MIB ciscoEnergywiseMIB excluded
snmp-server community public view EXCLUDE-ENERYGYWISE-MIB ro