Several Buses running peak morning and afternoon can be charged over night and in between making battery recharge times and range acceptable if the battery cost is low. The charging infrastructure for thousands of buses at the same time is possibly a big issue to resolve? May be the issue is the same as pointed out in peak times and charging points in some overseas locations.
Suspect Hydrogen to refuel quickly and to recharge/power while moving will be cheaper and reduce weight by more than halving the batteries required and especially if the lay off periods may not occur for many which run peak and non peak .
"Switching to electrified fleets seems like a no-brainer but why hasn’t that happened yet? In fact, Tesla unveiled its
Semi truck back in 2017… what happened to it? Why isn’t it on the road yet?
Turns out, current EV technologies have quite a few critical issues that keep the electrification of commercial flee
ts from being viable — from operational, infrastructural, and dollar-and-cents perspectives.
Even the almighty Elon Musk can’t defy the law of physics. A closer look at the Tesla Semi will show us how current EV battery technologies are limited in their application and what we can do to make electrification viable at a commercial scale.
For example, let’s say a truck without a battery pack weighs 7 tons. That leaves us 29 tons for battery weight and payload. To cover a longer range so the truck doesn’t have to stop halfway to charge for hours (which is expensive because any minute a truck isn’t on the road is costing the trucking company money,) it’ll need a bigger battery — which means a smaller payload.
So you can either cover a greater range but carry a smaller payload or have a lighter battery pack, which requires that you sacrifice range to carry more payload. .......
This trade-off doesn’t make business sense when compared to diesel trucks, which can carry over 20 tons with a range of 900 miles — more than the 300-mile and 500-mile range of the two Tesla Semi variants.
Furthermore, today’s EV batteries come in a “monolithic” block — you can’t adjust the weight and size of the battery based on how far a truck needs to go on a particular trip.
While Tesla Semi’s 0-60 acceleration is impressive (but no truck driver will ever need it unless they want to get fired,) it left out a crucial piece of information that anyone in the trucking industry would want to know — what’s the weight of the empty truck (including the battery pack?)"
Link to whole yarn
They are a fossil fuel based generator to extent the range and reduce the amount of batteries required for a Battery based truck which has several of the same issue as a Bus I think.
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