very broadly
1 tonne of lng = 50 mmbtu
so 0.5m tonnes of lng = 25mmbtu @$6 = $150m
before the price rise they were buying this from themselves @ $2 mmbtu so direct cost were $50m.
electricity was $50 per mwh. 0.5tonne needs 15mw or 4000 mwh costing $6m.
this leaves about $20m of other costs.