COVID has reduced the peaks due to more remote working and remote meetings. The peaks were by definition when the most services were needed - that will surely be buying more time before capacity is reached for commuter-London service on WCML.
The post I was replying to we taking about HS2 in full within 50 years, I was suggesting it might be a bit quicker than that, and highlighting that we could fairly quickly be beyond the HS2 growth model. However I also did say that we may be up to 10 years out from surpassing pre COVID numbers.
"Certainly lower staff costs". As we'll have 200m units coupled requiring extra staff on board vs a single 9 or 11 car WCML service today - on-board will be same; more trips per day are possible but netted against a fixed turn-around time, it might not make so much difference.
A 9 coach 390 have 469 seats and make up about 2/5 of the fleet with the 11 coach units having 589 seats. Each need a driver and guard. For an average of 541 seats per service.
An 8 coach (200m) HS2 set is expected to have 550 seats and whilst running between "London" and Birmingham (or wherever they split) will likely run in pairs. Whilst this will mean that they'll need two guards, just one driver would be able to run the service.
On top of that there would be about 1 hour of time savings for the round trip to Manchester (London Euston, Manchester, London and ready to head back to Manchester) so instead of 5 hours of staff time per return trip it'll be 4 hours of staff time. (Running only to OOC isn't likely to change the numbers by very much).
If they don't split/join (which would give the biggest savings) there would still be a noticeable saving from the reduced journey times.
"Certainly lower rolling stock lease costs" - please explain. 54 sets, £2bn cost inc 12 yrs maintenance (HS2) (£4.5M per vehicle) - whereas the Avanti WCML Hitachi deal is £350m for 23 5-7 car sets (2.6M per vehicle)
You state that the HS2 stock includes maintenance for 12 years (which puts it at £385,000 per year per coach - just the maintenance of the 390's is currently costing £200,000 a year & whilst that includes an allowance for upgrades the lease will be on top of that) whilst the £350M is cited as including maintenance in some of the reports I've seen it doesn't say for how long. There are comments in the reports to the 390 maintenance which says the 390's and new trains until 2026, if that's the case how long is that £350M for? If only until 2026 and we assume 4 years then that's £460,000 (clearly that's unlikely), however at 8 years it's £380,000 so almost the same as the HS2 coaches. Without knowing how long those values are for you can't compare the two.
Anyway, again the time savings come into play, so even if the HS2 units did happen to be slightly more then the reduced journey time would reduce the cost per seat per trip value down to be close to the cheaper units (which depending on the values could even be slightly less).
"it's probable that HS2 could reduce the cost to the country of the railways." - because £50bn - £100bn extra debt, being serviced at 4% pa (£2-4bn pa) isn't real money, or something? That's between 10 and 20% of the _cost_ side of the _whole_ railway today - and for just 100 route miles.
The idea behind investment in infrastructure (roads included) is that extra economic growth reduces the costs of those loans by giving the government extra taxes to pay those loans.
For example that £50/hour in business travel savings which is often critsied it is generally not how much the individual is payed but rather how much their charged to a client. To put this in perspective engineering graduates may be charged out at slightly less than this, whist most engineers would be charged out at more than this.
Whilst the government doesn't always directly benefit for those efficiencies (for example it may do if it is the client on a project and a member of staff is having to travel), it would likely benefit from a larger tax take somewhere along the line from larger profits.
Also, whilst £4bn is a lot of money, if HS2 saw the predicted 100 million passengers a year that's £40 per passenger (again not all of that would have to be funded by ticket costs, in the same way that users of new roads don't have to pay a toll on every new road or improved road).
Of course the other factor to bear in mind is that there's the potential of other capacity enhancements for the existing network from the building of HS2, which could allow other services to be run where there would be little (or even maybe no) infrastructure costs to allow them to be operated.
Of course it's possible that some of the loan costs could be reduced by leasing HS2 (see HS1 as an example where a 30 year lease was sold for £2.1bn on a line which cost £5.8bn to build) to a third party. That could have allowed the government to repay about 1/3 of the cost, and therefore reduce the loan payments (even if there reality was that the government just didn't borrow as much in that year at our would have otherwise done so).
How much extra revenue the thing brings is unknown but there seems to be a lot of double think on that. "it's costing nothing to own/run", "there'll be loads more revenue", and "fares will be cheap".
I didn't say it would cost nothing, nor did I say that the revenue was going to be higher and whist a lower cost per seat could allow ticket prices to be reduced a little without impacting the profits, it should also be noted that there's also quite a few people who have said that ticket prices "have" to be higher as it's a High Speed service without justifying why the costs have to be higher.