Hi. I have solar PV, but wanted to find a way to buy the rest of my grid power, fossil-fuel sourced electricity as certified GreenPower. For those unfamiliar with it, here is a description: http://www.greenpower.gov.au/
When I looked at what GreenPower options my electricity retailer offered, I found them to be lacking in flexibility (only a 25% GreenPower option) and transparency in the exact source of the renewable energy. While visiting the Alternative Technology Association website, I came across this alternative way to purchase certified GreenPower https://www.climatechest.org.au/host/ata/ It is much more flexible - I could choose exactly how many KwH of electricity to cover, and over what time period, and which wind farm would provide the extra electricity to the grid. On top of this, the GreenPower purchase helps support the ATA, and it was tax deductible as well.
Here is an image of the certificate provided: https://drive.google.com/file/d/0B-ioMEZoE8ytYzU3Tm1QN3hFb0k/edit?usp=sharing I'm pretty please to have been able to source certified GreenPower this way, rather than paying extra money to my electricity retailer.