My maths is...
@ 5000 Gj/day and $7 per Gj is roughly $12.75m per annum
@ 9000 Gj/day and $7 per Gj is roughly $23m per annum
@20000 Gj/day and $7 per Gj is roughly $51m... But we are still a way off from that and there is money to spend to get there