5 States Jan 17 electricity price hike, page-3

If you are talking about WA being left out raiderup -

that is only because I can not find daily price data for your great State.

AEMO do have a very neat page showing WA generation, demand and spinning reserve over a two day period - and in bottom right the current Fuel Mix.
http://wa.aemo.com.au/Electricity/Wholesale-Electricity-Market-WEM/Data-dashboard

A price is shown at the left but I have never found the "daily average price".  My impression is that WA price is much lower than Eastern States prices.  IMHO if the Govt sells off State owned electricity assets - it is likely prices will rise over time.