Genset usage today and future

[carnej1]

 From what I've read there a number of cases where Gensets are being utilized in local freight service as well as in yard switching. "The Next Generation GP's" are a mix of genset and new build/repowered rebuild single engine units. It's interesting to me that while there are just the "BIG 2" locomotive builders offering AC and DC motored 4300-4400HP offerings there is such a wide number of builders offering a wide variety of intermediate to low HP power right now...

[CSSHEGEWISCH]

Gensets with their variable HP will prove especially useful in switching, transfers, local freights, etc.  The horsepower will adjust to fit the job requirement:  A genset may need a full 2000 HP for a local freight on one day and less on a day when traffic is lighter; since most transfer runs are loaded one way and return light, a genset would shine in this sort of service, 2000 HP under load and only 700 HP when returning light.  The fuel savings will be sizable.

[carknocker1]

From what I read They can , once the train is moving the amount of power needed is less , They should become the next locomotive however they are designed for yard work and local switching , in cities to cut down on pollution . I would think more invations will be needed to make them sucessful road power ,

[jpwhawaii]

I was just curious after reading the GP longevity post earlier, can gensets use 2000 hp to start a train and then shut down 2 power units to pull the train, lets say on relatively flat trackage? If they can't today, will they be able to in the future and will they then be able to become the next generation GP's?