Running a pool is costly, of up to £1000 or more per year to heat. Have solar will reduce the cost by 50%.
If you do not use your pool in winter you can just turn off the solar as the expansion tank is capable of taking up the fluid expansion. As we always use a contactor if there is solar gain in the winter, the contactor will activate the swimming pool pump to switch on to releave the heat away from the swimming pool heat exchanger. Even during the summer this should always be operational, in conjunction with the solar pump, or otherwise the plastic pipe work could melt.
We would always install flat plate collectors to help reduce the cost, as these are cheaper than an evacuated tube, unless the customer requests otherwise. Installation costs for a 6 x 10 outdoor pool costs around £7000 installed.