It works in the latest IC2 open beta with forge 355, but it spams the server console with:
2012-11-09 17:14:22 [iNFO] [sTDOUT] [iC2] WARNING: gcewing.lighting.ic2.TEFloodlightIC2@2f31b250 didn't implement demandsEnergy() properly, no energy from injectEnergy accepted although demandsEnergy() returned true.