Though I haven't had a chance to compare your numbers against my original notes (ah, those late nights of calculating the BTU energy produced by different types of fuel, power plant efficiencies, etc...
) your overall view seems pretty solid.
As noted above, uranium in the game is unprocessed, so that it doesn't directly compare to the volumes used by the reactors, which take processed/enriched uranium. As well, uranium is so darn cheap that it doesn't hurt to up the quantities to account for processing waste/terrorist theft/etc.
The petrol numbers are also a bit hard to mesh because, in the game, petroleum represents both oil and natural gas. I don't recll the cost to produce gas with petrol being quite so much more than the coal price, that's something I've made note to look at, but it may be correct anyways if you factor in the expected increases in natural gas prices over the coming years.
It should be noted that, in the real world, uranium prices have gone up considerably lately, so maybe for SR2020 we need to bump those a bit. Seems like the kind of thing that could command more of a premium price.
One thing to note about SR2010 is that, when you have excess capacity, the renewalable sources are used first (Fusion, Hydro, Other, and even Nulcear due to its low use of uranium). Only then are the Coal and Petrol plants used.
However, one thing that is not done automatically is adjusting coal and/or petrol production based on which material you are shortest of, or which material is most expensive - that would be something to look at.
I've made some notes on that in our wishlist file.