We have a 16x32 vinyl pool on Long Island, NY.

We run our pump (1 hp) 7 hours a day. It is a 11 amp pump, x 115 V = 1.2656kw x 7 h per day = 8.855 kwh per day. At $.195 per kwh (including fuel surcharges) that's $1.72 per day. For 5 months, it is $260 per year.

Most smaller ( up to 1HP pumps) are in the same range.

If you use a two speed pump you can pay for the difference in cost in about 2-3 years.

To heat the pool you can use gas heaters, heat pumps and solar panels ... I have neither but in May and early June I wish I had )

Chemicals - if you regularly maintain the right level - and the friendly folks in this forum will help you - you should be able to spend less than $150 a year.

We open and close ourselves - it is quite easy. We only buy the non-toxic antifreeze at the pool store. I use a shop vac to empty the lines and pour in anti-freeze.

However, your grocery and beverage cost might go up with the effect of more and more frequent visitors !

If I may recommend something - go for high quality components for everything - they will last longer and be more pleasant to use. There is a ton of good advice on pool contstruction in this forum ...