Out of curiosity - why? (The cost per kWh is the same, just that a wall box will deliver it faster and more safely).
Solar excess.
The first thing I'd say is that indeed, if we buy one of these 'bundles' say from the car dealer (unit + install) then of course we'll get wacked. Exacty as per the protection kits sold at the sale point - so much can be saved by going to a thrid party post purchase, and often much mich higher quality /warranty than those pre-sold by the car sales people.
Same with us. Like all new EV owners, we worried about range, charging etc. But then we realised that the car charges up quite nicely at 2kW via a (slightly reinforced) outdoor domestic socket, and that this level of recharging also means we can use our PV panels exclusively for recharging – no need to access the grid at all. A 7kW charger would suck much more power than our panels can supply (except occasionally). I'm regularly surprised at how little time is actually required to charge the car from a domestic socket, but for the amount we use it (taking it out for short to medium drives every 2-3 days), this approach works really well.Solar excess.
As for safety, the large box with lights on between the plugs takes care of the safety.
Does the Zappi just stop charging if the solar input is less than 1.4Kw? I too currently just use the granny, I'm happy to continue charging even if clouds reduce the solar to 1 Kw momentarily and accept that I'll pay something. So far I've spent less than £50 extra at home for 1800+ miles.
I know a few self employed tradesmen and their view is when it's busy prices go up, basic economics of supply and demand, labour is a commodity like anything else ( accepting all previously mentioned overheads and training - I am also electrician, tho not self employed and no longer contracting)
Domestic installations, typically 4kw (16 panels), the rate payable depends on when they were installed. Our 2015 installed PV has a generation payment rate of 18p per kWh generation and deemed (50% of generated amount) of 6.7p per kWh. Our recent 1600 Kwh Fit payment was £340 made up of £290 generation plus £55 deemed. Older installations attract much higher rates to reflect the much higher cost of installation.
Mine cost £1200 and that's in Derbyshire, but had a word with him cost was putting in 20m 6 mm TWE which was not to ekect regs as the zappi takes 7.5kw . Got him to put in 6mm armoured cable which is rated higher. It need to be armoured cable cos of length, load, and being installed outside.
I had the same dilemma so I bought a variable current granny charger and set it to syphon off the excess. A lot cheaper than a Zappi or the like.
I had the same dilemma so I bought a variable current granny charger and set it to syphon off the excess. A lot cheaper than a Zappi or the like.
