electrcity connection charge

AJH · 2006-03-27T14:59:05+00:00

I've been offered a yard to house my timber kiln, it is adjacent to aroad with an electricity supply and I'm deciding whether to go with agenerator 11 hours a day or the grid supply. SEEboard deem it abusiness connection and are asking for details of welders, motors,cranes etc. as well as the total load (about 15kW(e)max) before theywill quote.Has anybody knowledge of costs of a recent 100A domestic installation?AJH

Mar 27, 2006 24 Replies

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Fred 20 years ago

4 x 230 = 960 agreed but where did the 1.5l come from. I've seen densities of diesel quoted as being between 0.82 to 0.95.

Taking 0.85, this means less than 1.1 ltrs/h. giving 2.66Kwh/l

It wasn't long ago when red diesel was 20p/ltr. Giving a price of 7.5p/Kwh.

As you say your generator may not be as efficient as others so in many cases the price may be cheaper.

If the waste heat can be recovered then I certainly agree it all becomes an win-win situation.

My original post was inspired by a village which was reluctant to have mains electricity because at the time it was cheaper to generate their own.

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Ian Stirling 20 years ago

A guess at density of petrol as being around .66. Using the right number, that's 1.24l/h, or 442ml/Kwh, or 44p, thanks for the catch. So, maybe twice the price - if using untaxed petrol.

It may be - if it's very expensive to install, as it may be. A moderately large generator is going to be maybe 20%-30% more efficient.

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Ian Stirling 20 years ago

Generator + largeish battery bank can be a nice sweet spot. Generator sized to charge the batteries in 5 hours or so, running near its rating. You can then attach other energy generation methods - solar, water, wind, or whatever.

The generator would normally be run an hour or two a day.

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Andrew Gabriel 20 years ago

Cars only need a design life of ~3000 hours (and that's with a service every 300-400 hours).

3000 hours is the figure that is used for designing the parts which expected not to fail in the lifetime of a car.

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Guy King 20 years ago

The message from snipped-for-privacy@cucumber.demon.co.uk (Andrew Gabriel) contains these words:

Given an average of 30mph, mine's managed over 8000 already. Even averaging 50mph, which is unlikely it's lasted 5000 hours.

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