It's a long story but at one point I had 3. Currently down to one which I'll be returning in march. Unfortunately my first foray into electric vehicles hit the stumbling blocks. I was offered a deal that was too good to be true and it turned out that it was too good to be true. Suffice it to say - don't hire vans. Ever.
However, I've bought one which will be delivered next week, fingers crossed
If you want to go electric there's ground work you need to do and some things that are deal breakers.
1 - You need somewhere to charge it. At home. You can't be reliant on the current infrastructure.
2 - Buy a decent charger.
B - You need to get your electric tariff sorted to a day/night rate. There is a cap at the moment so most domestic rates are the same (around 30pkwh). That will work out around the same for fuel as diesel. My rate is 9.5ppkwh during the night and 31ppkwh during the day. It knocks around 2/3 off the fuel bill. Slightly more expensive during the day for electricity but the savings on fuel far outstrip the extra 1ppkwh during the day.
D - Take a look at the distances you normally cover. The vans on the market (and coming into the second hand market) claim to do 150 miles. In reality they do 130 in the summer and as low as 100 in the winter if you've got the heater running all day. I have a number of vans on the road, at present there's only 2 that I couldn't replace with electric due to range issues. I imagine that the range on the next gen will be much higher though. The new ford truck claims 600 miles.
F - Don't read the stories in the daily mail about EVs. They are lying to you for some reason and it's weird.
https://www.lse.ac.uk/granthaminstitute/news/daily-mail-misleads-its-readers-about-electric-vehicles/4 - Depreciation is an issue. As with all technology, when a new version comes out the price of the old one drops like a stone.
5 - If you use your van for other stuff; as your daily driver, fishing trips, that sort of thing - forget it. Wait until the range is longer. They are great for shopping though. There's always a parking space
G - Do your research properly. It's a big initial outlay but the savings are massive.
If you've got any spare cash knocking about I'd be looking at solar panels and battery storage too (you can charge your battery on night rate and run your house on 9.5ppkwh). If the last few years have taught us anything it's that we can't trust any of these
moddedTLDR; Electric vans are pretty much perfect for window cleaning.