Despite initial problems some 16 months' ago with the initial installation I have to say my Hybrid 7.5 KW system has worked flawlessly since. Big enough to charge my EV via its 6.6 KW charger, and with 8.4KWp on the roof, it can even charge the PV batteries at the same time when the sun shines! Today we had a planned 8 hour power outage, so via the BIG changeover switch fitted by my electrician, I isolated the house from the grid and ran the whole house via the EPS output. Despite it being overcast the PV batteries were still at 95% after over 8 hours... electricity bill down to around £150 a year, including charging the car, absolutely brilliant!