Well since I keep generating statistical analyses I thought I would do one using that Data from that PKP pseudo Pendolino order. (As far as I can tell IEP style 26m carriages with no tilt equipment, presumably you could shrink down the bodyshell to the British loading gauge and eliminate the tilt profiling as you do so).
The concept of this analysis is to calculate what the effect on the cost of the GWML project would be caused by electrifying all those sites that are projected to receive IEP services in the Franchise Consultation, as well as Plymouth (as not electrifying a few miles between Newton Abbot and Plymouth would be stupid) and operating non tilting EMUs similar to downscaled versions of those ordered by PKP retaining the 26m coach length of the IEP. (The only extra gauge clearing is between Newton Abbot and Plymouth).
Note: This projection is based upon the premise that the state would be willing to use public money to purchase the sets directly and to carry out the outlined capital improvements without resorting to PFIs. Therefore Inflation Index linked Treasury gilts of appropriate durations have been used to obtain capital discount rates.
Currently 314 carriages are planned to be ordered as part of the IEP project for the Greater Western franchise area.
If we add five additional seven car sets to this order to account for the replacement of HSTs currently serving on Plymouth terminators, leaving only the Penzance trains under HST operation, we get to 349 carriages.
The PKP order was for 30 7-car sets, and as such for a proper comparison we should calculate an order that averages to 7 car sets, with vehicles being moved between sets to disproportionate them based on franchise requirements.
A nice round number of 50 sets seems appropriate. Although this is smaller than the combined planned HST and IEP fleet on GW, the fact is that doubling up bi-mode and electric sets will be unnecessary under this plan, reducing the total set count.
Assuming the new smaller bodyshell for the existing 26m equipment can be amortised into insignificance across the larger 50 set order, the cost per set should be similar to the PKP value, which is 22 million euros (665 / 30 sets) per set.
The total would be 1.1 billion euros, or roughly £865m at current exchange rates. These prices include the purchase of the sets and 17 years maintenance.
If we assume we wish to defray the entire cost of the sets over the first seventeen years to avoid having to untangle the maintenance costs, this gives us a value of £72,150/month for each seven car set. (Using a typical IL20 bond yield of -0.95%)
To allow an all electric pseudo-Pendolino fleet to be deployed on all IEP assigned duties on the Greater Western franchise area, I calculate the following routes will have to be electrified:
- Bristol to Plymouth Line
- Berks and Hants
- Cardiff to Swansea Line
- Cotswold Line
- Golden Valley Line
- Swansea to Camarthan line
- Paignton Branch Line
I calculate these routes to total roughly 422 double track miles, and using a Delta Rail Report on the low cost electrification of branch lines I calculate a figure of roughly £1m per double track mile electrification.
Holding the project to cost can be easily achieved in my opinion, especially such as proposals for the isolation of overhead wiring underneath troublesome bridges to avoid gauging works can be implemented.
Therefore I derive a value of roughly £452m for the electrification works on this project.
If the capital cost of the project is defrayed over 37 years (again using IL37 gilts, of roughly 0.05% yield) the repayment cost for this project comes to roughly £1m per month.
So, 50 7-car sets at roughly £72,150 per month each comes to £3.6m/month, combined with the capital spend on electrification that comes to £4.6m/month.
Assuming the DfT study on the leasing costs (I assume that includes maintenance and minor things, but the whole ECS in the morning thing seems like it would cause all sorts of headaches and not save much money anyway) is correct we would see £170,000/month for 5 car electrics and marginal more for bi-modes.
£4.6m/month spread over sets at £170,000/month comes to roughly 27 5-car sets.
So this plan is cheaper than the DfTs proposal on the face of it, I'm not sure if I've missed something critical but it appears this is a major indictment of the IEP itself and of PFIs in general.