Jordan Adam
Established Member
This has already been considered. In theory the savings from the cost of electricity vs diesel and the lower running costs of a EV bus overall make up for the cost of midlife battery replacement. When placing the order First did also consider going for buses with opportunity charging (Like the Volvo 7900Es in Kilmarnock with Stagecoach) however the argument against them was that when it comes to battery longevity it's better to have a vehicle with higher battery capacity/range and charge it once per day than it is to have a bus with a smaller battery/less range and be topping it up constantly throughout the day.It would be interesting to find out if a mid life battery replacement is planned for the EnviroEV's or not?. Personally, I think there will have to be at some point if First intend on the EV's having a similar lifespan to a standard diesel Enviro. If the range on them is already poor that isn't going to improve over time. However, if the plan is to replace the batteries in about 7-8 years time that should rectify most of the issues mentioned above due to advances in battery/charge point technology in that period of time. The most modern diesels will probably still be in service for the next 8-10 years so those should be able to cover the shortfall in the meantime where necessary.
I do think First were likely swayed towards ADL since their buses are UK built. It is important to supported British companies as much as possible, however to me it seems backwards to go with product purely on the fact it's UK built when there's other products on the market from other counties which are vastly superior.I agree with supporting Scottish firms but if they are seemingly unable to supply what was wanted maybe they do need to look elsewhere.
This won't be possible in the deckers due to weight limitations. The issue with range does affect deckers far more than it does single deckers. In the real world the double deck Enviro400EVs seem to be averaging a range of around 120-130 miles, in contrast a single deck Yutong E12 can do 250-300 miles which is more than enough to last a full day on a city network.Maybe ADL will be able to supply bigger or more powerful batteries in the future
First were already aware of the range issue which is why routes are not being converted to 100% EV operation, diesels will and are still be allocated to the longest duties for now.