## Notes

GTMH reactor is probably a Gas Turbine Modular Helium Reactor^{[1]}

### Items that this cost includes

In particular, please explain how the following costs have been treated:

- Uranium extraction and processing
- Uranium storage
- Uranium disposal
- Connection costs to national grid

### Items that this cost excludes

### Detail on the conditions under which this cost is valid

### Explanations as to why this cost differs from others

### Limitations of this cost estimate

### Calculations

#### Operating cost

The fixed operating cost is given as £15/kW and the variable as £0.10/GJ. The availability factor is given as 83%. Therefore the variable component of the operating cost is 365.25 days x 24 hours x 83% availability x 0.0036 kWh/GJ x £0.10/GJ = £2.55/kW. Together the toal is £17.55/kWpeak.

### Markal Note

Kolb and Martinsen (2003)