The cost to operate my gas pool heater is too high now.
Solar heating is ideal for swimming pools.
In fact, more solar kits are used to heat pool water than for any other purpose. In colder climates, you will get an extra month or two of pool use. If the water gets uncomfortably warm in midsummer, run the solar unit at night to cool it. The new solar pool heating kits are easy to install yourself. They can be laid on the house or garage roof, the ground, a support rack, etc.