Not sure that weight would be less on all electric vans and it would certainly be much more expensive. These days a £5000 electrical setup is pretty basic if its being done for you.
Extra stuff I carry these days is Remoska, coffee machine, air fryer, induction hob, slow cooker, that adds up to a few kgs that I rarely use. My 2000W pure sine wave
inverter is a big heavy beast as well. Conversely my composite refillable (piped in) is very light.
Gas is still used a lot and will continue to be so long after we have all gone, they are building boats that run on LPG. There are already non fossil fuel gas produced and on sale that goes straight into standard log refillable and no changes needed t use it.
ok Nab let’s take my van
First I don’t need £5000 worth of extra electrical work.
My van came with an electrical system including lithium compatible chargers.
All I did was replace the two lead batteries and fit a
victron inverter.
Total cost including batteries currently around £840.
including my installation total costs £1100.
My diesel boiler upgrade cost me £60.
But most if not all of this would be offset by not requiring gas installation works and equipment.
I carry two 13kg gas cylinders when full they weigh 59kg
I have a large metal gas cabinet and all of the gas pipes and gas equipment let’s say 15kg so that’s 74kg.
I replaced two lead batteries with two lithiums saving a further 26kg.
I would no longer require a gas oven which weighs 9 kg
Total weight saving 109kg.
On the flip side my
victron inverter weighs 8kg
I would carry an air fryer to replace gas oven approx 5kg
I would install a third lithium
battery due to the compressor fridge 14kg
As for the induction hob, it would be replacing the gas hob.
A coffee machine, slow cooker are options which would be part of your payload regardless of how you power your van.
My net gain in payload if I went all electric would be 82kg
I would no longer need to pay for gas refills, nor ever run out of gas.
I would have more storage space in my van due to not having a large gas cupboard.
I would no longer require annual gas inspections at £95 a go.
No risk of gas induced carbon monoxide poising.
No risk of gas explosions.
When using campsites I don’t require EHU and take non EHU pitches were possible.
Rapido currently have three vans in their European spec were the only gas appliance is the hob. All they need to do is replace the gas hob with an induction hob, and job done.
With the advances in lithium technology, and the vast reduction in price, I reckon many more vans will be supplied without gas the near future. Currently manufacturers are ripping us off for lithium, but I suspect the market will soon take care of this, and lithium will become standard sooner than later, and with much greater usable capacity lithium offers all electric vans are sure to follow.