We found Replenishable Energy excellent. Their rep spoke to us in plain English and discussed other ways to reduce our use of grid power including led lighting, echo pool pump and roof colours to reduce heat . We only have east and west facing roof space so we increased the system to 7.8kw with panels optimised to a solar edge 6kw inverter and producing on average 30kw per day since install. Everything Replenishable Energy promised has happened on time.