Solid Energy lost $6.5 million in the six months to December, mainly due to a fall in coal prices.
Revenue fell by more than half to $257 million as prices fell from $US300 per tonne to $US128 per tonne, while production also declined due to industrial action.
Solid Energy proposes to pay the Goverment an additional dividend of $30 million at the end of March, taking the yearly total to $54 million.