When could nuclear-electricity be cheaper than gas-electricity?

This is based on public data reported in DECC's Electricity Generation Costs 2013. It doesn't give exactly the same levelised costs as reported in that publication ¹

	Gas-electricity		Nuclear-electricity
Setting	Today	Annual change	Today	Annual change
Pre-development cost	£/kW		£/kW
Capital cost	£/kW		£/kW
Fixed operating cost	£/kW-yr		£/kW-yr
Variable operating cost	£/MWh		£/MWh
Connection and use of system	£/kW-yr		£/kW-yr
Insurance			£/MW-yr
Decomissioning			£/kW
Fuel	£/MWh		£/MWh
Carbon	£/tCO2
Pre-development time	yr		yr
Construction time	yr		yr
Plant life	years		years
Cost of capital
Load factor
Efficiency

Data table

Costs that change over time

Components of the levelised cost of gas

Parameter
Total

Components of the levelised cost of nuclear

Parameter
Total

Footnotes

Reason's this will give different answers to DECC's official levelised cost estimates:
- This model assumes a constant percentage growth in carbon and fuel costs. DECC probably assumes a more sophisticated shape.
- This model assumes pre-development costs are spread equally over the pre-development period and capital costs are spread equally over the construction period. DECC probably assumes a more sophisticated allocation.
The plant has the same operating cost for its entire life, but the operating cost varies depending on the year in which the plant is built
Finance rates must be the net post tax effective rate

The source code for this tangle is at https://github.com/tamc/tamc-tangles/blob/gh-pages/whenwillitbecheaperthangas.haml is © Tom Counsell and is licenced under the open-source MIT license. Please suggest fixes and report bugs at http://github.com/tamc/tamc-tangles