I have googled enough 
I would guess that getting your electricity from the local grid and best priced supplier will be cheaper for a 415v supply. Depending how large a supply you want you could be charged 1 or 2 pence a unit cheaper than domestic prices (or as much as half if its a really huge supply you need). Cheaper becasue of economy of scale for the generators – they can produce electricity lots cheaper than you.
Generators might be cheaper to run if you can find a cheap source of fuel for them and use the generator over many years, 20 or so.
Answerer above had a good point, why not get a kiln that is heated by the fuel directly rather than electricity? Could be cheaper depending on the fuel of course
Yes, and no, in that order.
You’d need one big generator. You don’t say what consumption the kiln has…
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Hello,
It would depend if it is Single or 3 Phase. Usually household supply is cheaper than running a single phase generator driven by a petrol or diesel motor. 3 Phase Alternators driven by diesel motors can be as efficient and cost effective as Household supplies. (Rent the Alternator). Good Luck
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415v AC is 3phase. 1st you have to obtain a genny, then you have to fuel it. It will probably be noisy. Just connect to the mains as long as you do have 3phase!
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Obviously if the generator supplied appropriate power, it could fire an electric kiln, but if it is operating at 415V it is likely a large kiln and would need a large generator.
As to being cheaper, that would depend on the cost of the fuel and amortized cost of the generator itself. It is very unlikely that is would be cheaper, most likely it would be significantly more expensive.
There could be rare instances where it might be cheaper, particularly if you have your own hydro power, coal mine or extensive woodlots.
What is the kiln used for? you might consider a fuel fired kiln to perhaps reduce operating costs.
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Where are u located?
what are the respective prices and availabilities of power, generator fuel?
What is the energy load involved?
Generator efficiency?
Nature of Load– continuous- variable- intermittent?
Temperatures?
You need to answer the above to get a tangible answer.
However, if I were you — unless it hurt the material to be heated, I would rather use fuel directly to heat the kiln rather than go for power generation.
Each step has its own efficiency levels less than 100% . More the number of steps in the energy chain, more is the loss– add to it the additional costs of buying, installing, running and maintaining the power generator and the depreciation involved.
Need more? contact me direct
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I would guess that getting your electricity from the local grid and best priced supplier will be cheaper for a 415v supply. Depending how large a supply you want you could be charged 1 or 2 pence a unit cheaper than domestic prices (or as much as half if its a really huge supply you need). Cheaper becasue of economy of scale for the generators – they can produce electricity lots cheaper than you.
Generators might be cheaper to run if you can find a cheap source of fuel for them and use the generator over many years, 20 or so.
Answerer above had a good point, why not get a kiln that is heated by the fuel directly rather than electricity? Could be cheaper depending on the fuel of course
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No
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Kilns usually require a lot of power and so you will need a large generator. It will be easier to connect it to the normal supply, that is if you have three phase.
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