My bets he's never had to get an EICR before but is trying to get you push your prices down.
I've a rented a few properties in my time and never seen an Eirc report.
Also look at RIIO 2 and how there funded, learn a bit about how greening of the grid and vehicle fleet will put pressure on the DNO. Dont need to know massive details but show an interest.
What area with Western Power? Without know what area can't really advise on practical stuff.
I work in subs for National Grid, so have awareness of DNO level stuff.
I would do a lot of reading up H&S stuff how to carry out risk assessments, ERICPD ect. There big on that stuff. A bit of...
For usb fast charger you need to look out for PD standard usually usb c onyl ones I can find https://www.amazon.co.uk/dp/B07K3LDWJT/ref=cm_sw_r_cp_apa_fabc_mzp7Fb2ZTSVFC
I suspect there insurance may have something to say as well.
Just use one of the 240v lighting rail system, like every one else. It'll be cheaper and much safer.
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