Nuclear energy... expensive?
Have you checked the price of some of the renewable energy sources? Solar power is just about the most expensive way you can possibly generate electricity. Yes, sunlight is free, but maintaining the hundreds of square miles you would need to be a major supply for the grid isn't. Wind power is better, but only by a bit.
The maintainence is probably not the major factor in determining the plant cost. For something like wind the capital cost is. As such the generation cost depends mostly on the pay back time and discount rate that you use. If you can stretch out the payback time then the costs come down.
With solar the huge costs arise because of the low conversion efficiencies. If you then factor in the intermittant nature of the energy source, costs rise further.
Figures I have in front of me for EUR/MWh tell me that wind onshore or offshore) can be comparable to Nuclear. Solar PV is off the scale where costs are concerned. I don't have direct references for them but the range of values I have are
Nuclear EUR 20/MWh - EUR 80/MWh
Onshore wind EUR 40/MWh - EUR 80/MWh
Offshore wind EUR 55/MWh - EUR 78/MWh
Solar PV EUR 316/MWh - EUR 865/MWh
The range of values for wind comes from selecting different discount rates. (from 5% to about 8%)
The nuclear range comes from the UK energy review with it's high end coming from an MIT study.
These two reports give some insight into costs/projected costs in the UK
http://www.cabinetoffice.gov.uk/strategy/downloads/files/PIUh.pdf - renewables
http://www.cabinetoffice.gov.uk/strategy/downloads/files/PIi.pdf - nuclear
They reckon that solar PV won't be competitive in the UK until 2020-2025.
I've heard that if you consider that solar panels are being made at factories powered by the grid, the amount of CO2 produced by solar energy (the amount produced by making the panel vrs the amount of energy it can produce in it's lifetime), it actually is MORE than nuclear energy.
I suppose if you could get enough made, you could power the solar cell factories on solar power...
Nuclear energy doesn't need to be expensive and in practice, it's competitive in price.
Then again.... coal is dirt cheap. Especially the high sulfur kind.
This paper does life-cycle analysis (or collects together life-cycle analysis data) for various power sources.
(Gagnon, L et al (2002) Life-cycle assesment of electricity generation options:the staus of research in year 2001. Energy Policy, 30, 1267-78)
You can find it on Science Direct if you have access.
Best practise PV is slightly better on a CO2 eq/TWh basis than best practise nuclear. Although at the other end of the range Solar PV is much much higher. Best practise wind is lower than either of them. All three produce insignificant amounts compared to something like coal or gas, due to the fact that all (well almost all) the emissions are produced during manufacture and the energy source comes carbon free.
And we are NOT going to run out of Uranium. The IAEA has said that we have supplies set for 20 years, using ONLY the current deposits being mined. That's assuming no new operations would be started. The US has produced more uranium than almost any other country, over the past 50 years. And yet, it is rated something like 15th in terms of reserves.
Uranium is not really "rare" as far as materials in the earth's crust go. Now, if you consider reprocessing and the fact that thorium can be used as fuel for reactors through neutron capture, with thorium being even more common, you'll find that the amount of fuel reserves are really quite sufficient for the foreseeable future. Take into account the idea that plutonium and heavy isotopes can be used and it means even more fuel.
No... I don't have the citations now. It's late, but I'll find them. Uranium is not a rare material by any stretch of the imagination.
We are not going to run out of oil, coal or gas either by that logic. It is finite. One day it will run out. I couldn't tell you when that will be though.