QS Energy Inc (QSEP)

[moorea9]

Of course if the 2,1 Megawatt savings is for 1 pump and not the whole station, then the ROI would not be 21% but 21% multiplied by number of pumps.
If you add up the diesel factor instead of the grid, you may well approach a 100% ROI just by energy savings.

To how much does the energy savings amount to, apart from the flow effect ?
The energy savings of 75% brings the power from 2,8 Megawatt to 0,7 Megawatt per station.
Ballpark cost of 0.05 $/KilowattHour in the US so 50$ per MegawattHour.
So a savings of 2,1 Megawatt per station leads to :
2,1 x 50$ x 24h/day x 365day/year = 919,800 $ /year per station. At 4,3 M$ per AOT pack, the ROI is "only" 21%.
I would believe then that the flow effect is mainly the one that is pursued by the customers as the ROI as calculated by Earth1 could be between 100 and 200%.