How large is the wind energy market?

The penetration of wind generation is especially strong in
South Australia, where it supplied 33 per cent of electricity
consumption from the grid in 2014–15.
In 1164 trading
intervals in 2014–15, wind farms supplied 75 per cent of
South Australian consumption from the grid.
However, wind generation tends to be lower at times
of maximum demand. In South Australia, wind typically
contributes 10 per cent of its registered capacity during
peaks in summer demand.