Found a good article relating to SA Wind which discusses some challenges and opportunities. Its from Oct 2013 and there is a good discussion at the bottom for anyone interested. Link: Making better use of Wind
Extract from above link: "AEMO’s work found South Australia and Victoria are the states where wind generation is most likely to be curtailed by 2020 by grid restrictions. These states don’t have large-scale pumped hydro, but they could benefit from it already.
For the South Australia electricity market, we investigated the benefits of buying wind power when it’s cheap, storing it briefly in hydro, then reselling it when power is more expensive. We found that pumping from the lower dam to the higher dam for six to ten hours, holding the power for a few hours more, then releasing the water to generate electricity provided optimum financial benefits."
