Obviously PV doesn't do much in winter, it generated just about 200 kWh (my system is nominated for 7.5 kW peak output, I can get about 6 kW peak output in the summer) in December while the pump consumed about 850 kWh. It's a new house with highest insulation rating and even in the winter if there is any sun the house gets hot even without the pump.

Anyways I'm happy enough with my bills, even winter bills.