If you have periods where your electrical load is very light, you could use the 200 kva generator because it should use less fuel at 200 kva than the 1000 kva generator running at less than 200 kva. And, of course, you would have to power down the larger generator to get the fuel savings and bring it back on when the load goes back up.

Use of the step up transformer would only make sense if the smaller generator were far away and you are just trying to minimize line losses, however, I expect that the losses due to the transformer efficiency will be larger than the savings you would get from the higher voltage, in any case you will not be able to get more than 200 kva.

There are number of energy sources that will drive your generator, wind, water, alternative fuels, etc, but not knowing your location, I can’t tell which one would be economical for you. Why don’t you ask a follow-up question on that topic?
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power engineer

u cant use 200kva instead of 1000kva.. eventhough u use stepup transfrmr, u couldnt meet the required load demand with that 200kva generator
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Wind power generator
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Just give it a lot of love and it’ll last a real long time. haha And when it dies, get another. Don’t worry about it.
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All engines have a measure of the amount of fuel they use. It is based on horsepower hours. That is so much fuel per horsepower-hour. Get that information for your generator and you can figure out the fuel consumption.
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ok so you a caring owner of the kubota gen. well a bit of smoke is ok w/ 1k hrs and you dont say how many times you use it ie you start it up just to ck it or your actualiy putting a load on it with power being draw on the gen. ?? also its important that the oil your using is combatible with the weather and area your using it in trust this 40 w in the rockies aint gonna work and in winter you need a heater in the sump too keep oil warm
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life