Solar energy now the same in cost as existing coal stations.

I came to via Frank Josko who was critiquing ALP policy.
Solar energy now is now the cheapest option. for bulk energy. In Australia  according to Origin Energy solar power id as cheap as EXISTING coal stations. wind energy is marginally more expensive.
The cost of existing coal power is $40 MWh  which solar power has now reached except solar power has NO negative externalities.Wind power is at $50 MWh.
If we add in NEW coal powered power  stations costs are about $80 MWh and the fact units in coal powered power stations break down regularly on very hot days the future is looking one-way.