Gas
On the day before the move, take a final reading of your natural gas meter,
and go on the site of AGL: www.agl.com.au/,
main supplier in Australia.
Don't forget to have your details ready together with your new address and
they will forward your final account to you. Alternatively, you may settle your
account by credit card over the phone. Fo morer information, you can
call AGL - 131 707
Electricity
Electricity is de-regulated in Australia so you have a choice between different
providers. Having said that it seems to work by area rather than being truly
competitive.
In Sydney you will have the choice between:
Water
Water is paid by owners so if you rent, you shouldn't
worry about a water bill. Just in case, here is the phone number for Sydney Water : 13 20 92