Not_a_boffin,
I agree that all I listed is already within the project. The emals is an additional package to the main construction project. The sub contractor will have costed their risk, project management etc, but the main contractor certainly has not included meals in their project cost.
Much of the electrickery stuff is well past the design phase. Much hours work to be done, maybe, ooh, I don't know guv, back of a fag packet calc, how about £1 billion? Just for you. Cutting new access routes etc will cost you a lot, you know. We haven't tested the generators under this load, nor type of load before. They're only tested for one six volt light bulb. That's all you asked for, err, signed for in the contract. Talking of which, this is a contract change. Means the lawyers will get involved. There's another £500 million to the costs.
The above is tongue in cheek, but you know how it is.
I didn't notice any intemperate tone. In fact you should drink more often and then post. Nice humour.