I've been trying to convince a neighbor that just installed an inground pool that a solar cover would save them money. I gave them a website that I saw here that showed the cost to heat with and without a solar cover. They told me that the table was correct, and their gas bill went up this year by exactly what the table showed. They also told me that they just got the final building inspection done and the town told them that it now requires a solar cover for all new pools that are heated - so they will be required to get one.