Why not go renewable?

Green Energy?

The graph above shows the donations to the three main political party's in Australia by Coal Seam Gas (CSG) company's. 
The Lib/Nats (Liberal/National) are two radical far right wing party's that have formed a coalition. The Labor party is a mid-right ring party, and the Greens are a middle of the road (leftish) party.

I find this very shocking, especially when our power company's like to say they are concerned with the environment. The goveernment hs given handouts to the major polluters which was supposed to be for moving into renewable energy sources. I don't think any of those hand outs have been returned, despite some of it being compensation for polution policy that is no longer in effect.

So i had a look at my energy company, i was curious as to if they still claimed to be 'green'. The only thing i could find was an offer to pay and extra $3.85 per week for my homes energy to be sourced from renewable sources. I have no idea how they determine that only renewable energy can get to my house through the power grid. I didn't think the grid was so customisable.

Why on earth do i have to pay extra to do this, why isn't it that i pay extra not to do this. If everyone suddenly opted into this, would they be able to provide 100% renewable energy to all its customers? If so why are they not already providing this. I I just don't think this is real, it does not seem logical.It also grates when they have had many years to go renewable and have had many handout from the government.

Back to the political donations, why if these companys are concerned with the environment do they give the largest donations to the Liberal/ National party (Who are very anti environment), and  Labor who are more environmentally concerned. With no, not one donation going to the Greens, the one party that want to make Australias energy renewable and sustainable? Why?

We are customers of these company's, we pay them. So i suggest that we as customers contact our electrical company's and ask why they are not 100% renewable?, why do they not support the Greens with donations, the one party who would assist in making our power sustainable?