Advantages
Fuel Efficiency Comparison
The following comparison is based on a vessel equipped
with twin 29 hp diesel engines vs. the same vessel equipped
with twin ST37 electric motors and a 10kW diesel generator,
operating at 150 hours per year over a five-year period. This
conservative, hours-efficiency-cost equation illustrates the
fuel savings available when using our Solomon hybrid-electric
propulsion system and can be recalculated to cover longer
cruising hours per year and higher fuel costs. Areas where
diesel costs are higher than $1.25 per gallon will show even
more impressive savings for the hybrid electric system. (Note
that many twin diesel vessels will also have a fuel-consuming
onboard gen set that is not figured into this equation.)
|
|
|
Conventional twin 29 hp diesels |
Dual
hybrid- electric with 10 kw generator |
|
| Motoring hrs/yr |
Fuel cost/gal |
Motoring years |
Fuel
use gal/hour |
Total
fuel cost |
Fuel
use gal/hour |
Total
fuel cost |
Hybrid-electric
savings |
150 |
1.25 |
5 |
2.5 |
2,344 |
0.8 |
750 |
$1,594 |
300 |
1.25 |
5 |
2.5 |
4,688 |
0.8 |
1,500 |
$3,188 |
2,000 |
1.25 |
5 |
2.5 |
31,250 |
0.8 |
10,000 |
$21,250 |
As you can see, with minimal cruising hours
per year fuel costs alone are cut by two-thirds. When these
savings are added to the dramatic savings in maintenance and
repair costs between the two diesel engines and the single,
highly efficient, hybrid generator, a customer with our hybrid
electric system can enjoy substantial savings. And as the
cruising hours increase, the savings become even more dramatic.
When a vessel is used commercially, the savings provide an
impressive financial advantage. The largest number of motoring
hours per year is an example of commercial operation in a
water taxi, fishing vessel or work boat.
Contact us for more
info
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