Looking for a house to buy in Any Property or Service For Sale or Wanted - Including rentals or other items Posted July 9 · Report reply I understand having the independence of your own solar installation. But in Costa Rica, that has little to do with "ecology and sustainability" since electricity is generated by "renewables." Depending on the area where you live, a solar installation may not be that effective. I used to live in a rainforest area where a solar installation would not be the thing. I now live in Guanacaste where using solar is more realistic. I'd get your property first and then figure out what would be the best way to generate your own electricity. Who knows, it might be wind or hydro or a combination of all three! Location would also be important in deciding whether you need a pool heater or not. And.... of course..... just how warm you want that water to be! Probably cheaper than a pool heater would be a cover that you could put on at night in order to retain some of the day's heat overnight.