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Performance summary

Asset performance Dampier Bunbury Pipeline

United Energy

Duquesne Light

Multinet

WA Gas Networks

DUET Parent performance

Outlook

Questions

Appendices

^~

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1. As per DUET MIR2. Based on the comparison between actual H12010 and like-for-like (pro-forma) H12009 results3. As part of DUET Groups de-gearing initiatives, in December 2009 DUET closed out each of its US$300 million cross currency interest rate swap and $310 million Australian interest rate swap prior to their maturity

date of 29 August 2011 at a net total cost of $3.5 million. This action principally eliminated DUETs potential future cross-currency interest rate swap principal settlement obligations

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