If the average truck burns 8 gallons per hour, say 10 hours per day, say 6 days per week it works out at approximately 1920 gallons per month. At $2.10 per gallon that's just over 4 grand a month, so if the Jetstar saves say 15% that's a saving of just over $600 per month. About the same as it costs to finance a Jetstar, or so I'm told. Granted, you also get the environmental benefits, but let's focus on $$$$s.

Mining generators use between 80 and 130 gallons per hour. 24 hours per day, 7 days a week, say 30 days per month (av). If you take a nominal 100 g.p.h. that's 72,000 gallons per month. But getting diesel out to these places costs a fortune, landed costs of $10 per gallon are not uncommon and it can be much higher, but let's use $10. That's $720,000 per month. See why mining overheads are so high? If you save 15% of that you get a $108,000 saving. This new "PG" array is much costlier than a single Jetstar, but apparently the ROI is between one and three months.

Now I can see why the Jetstar is a hard sell in the trucking world now that diesel has dropped in price somewhat, but if DYA can't sell this new PG unit based on the math above then it's time to start making candy at Brock Rd.

Plus, if some of my mining stocks could see this kind of cost reduction I might be able to get my money out of them too!