Would be nice to just get a Powerwall 
13.5 kWh capacity is probably what I need looking at averages.
https://www.tesla.com/en_gb/powerwall
I’ve just watched this on it
Based on the May date on the upload that was the 2016 model before the Nov facelift.
I think this is the only thing stopping me is that the UK prices are taking the ■■■■.
compared to
£2,673.60 incl. VAT
Granted thats not 13.5kWh but even with getting all the parts and labour it can’t be more than £4kish
Could it save almost grand a year 
Off-peak 15p cheaper than my current two year fixed, however in two years it’ll prob be 30p kWh
5000 * 0.05 = £250
5000 * 0.20 = £1000
£750 year saving based on 5000
5000 * 0.25 = £1250
5000 * 0.30 = £1500
5000/365 = 13.7
6000 * 0.05 = £300
6000 * 0.20 = £1200
= £900
6000/365 = 16.5 avg 
So yeah a potential break even at roughly 5 years on a non-tesla setup.
With the Powerwall it would mean a decade min break even
With potential battery life at 10 years I’m 