I don't Know of any in Tasmania Australia, However we do collect gas from some dump sites in Adelaide. So i would say maybe.

Will look into it for you.

Regards,

Chris

PS Do you think we should have a Bio-Gas forums ?
I am currently building a two units one 6 x 205 ltr drums, for Gas hot water and cooking, the other 3 x 205 ltr for power generation, we have 1kwh of solar and need to reduce fossil fuel use.