Had a good visit from Duncan @ Ceilba Renewables this morning, gained a lot of good info and got many questions answered. Key points noted.
- Is 13.5kWh of useable battery (not sure what actual size it is).
- It draws about 3.5kWH of battery.
- Option to draw 5kWh or a bit more if your 250V (depends if a 230V house, or more if a 250V house).
- To draw 5kWh or more it needs a G59 application which Duncan does.
- The G59 process tends to be slow in Scotland and takes up to 45 days
- There is currently a 6-8 week wait time for the PW2. A bit like the cars, they can't manufacture them quick enough to meet demand.
- The wall box cabinet comes out 15cm from wall.
- Saw the free smart phone app, and is very quick and efficient with good live data of PV generation and battery status.
- Battery does not get as hot as would think.
The whole cabinet is for 1 x 13.5kWh battery only. To add more array’s at a later date it means another same sized box. So they either (a) attach onto the existing wall mounted battery, so 15cm from wall becomes 30 cm from wall for a 2nd array, 45 cm from wall for 3 arrays and so on... or (b) the battery cabinet can be situated separately, above or at the side, ideally close by but in theory could be further away.
If I located the battery in the cupboard with my consumer unit, then the cost is £6200 inc. The G59, but with VAT to be added on.
Will cost a bit more to place in garage and do a cable run, which is what I think might be best for me from a long term point of view, for accommodating future array add ons.
The VAT is 20% unless installed with PV at same time then is 5%. Can not have 5% retrospectively applied to an existing PV system. Crazy! Anyway, when I asked about a small PV system installed at same time as would effectively be free, as mostly covered by the 15%.... Duncan was quite flexible and suggested I just get my own renewables installer to do it, as he would technically be outsourcing it to them, which is what he would do anyway with PV installs.
I think it represents good value. The battery on our Leaf is 20kWh approx. useable and it used to have an estimated industry value of £5000. They have probably come down in price these days, but for a 13.5kWh battery and all the other tech the PW2 does, I think it is a good investment.