For the past 6-months I have been involved in the implementation for Advanced Metering Infrastructure (AMI) Rollout for Victoria. The project is not without criticism from the Victorian Auditor-General.
What I got in return is being the first team in Asia Pacific (and possibly in the world) for implementing ebXML Message Service Specification v2.0 successfully. It is one of the most complex XML standard for enabling global use of electronic business information in an interoperable, secure, and consistent manner by all trading partners.
In short, successful implementation of ebXML version 2.0 you really have only two choices - (1) is an ebXML Module v7.1 from Software AG webMethods or (2) an adapter from iWay.
I did thought about creating my own ebXML adapter alternative for those who's seeking for cost effective solution. But for legal reason I can not make it commercial. You are welcome to contact me at scott [at] mrnguyen.com for further interests.