Solar pool pump economics
On average a typical diesel genset consumes 1 gallon fuel = 12 kw.
12 kw will operate an AC pump for about 6 hours.
1 gallon diesel cost 90 pesos. Add 25% losses & maintenance to genset.
Final cost to run an AC pool pump at 112 pesos/day or 40,880 pesos/year.
Converted to $US at +/- 30 pesos = $US 1,362 per year x 4 years = $5,450
Solar pool pump systems sell for about $US 5,500. Lifetime of pump 10 years.
Lifetime of solar panels over 20 years.
Lifetime of a 18 kw diesel genset at 1800 RPM is 10,000 to 15,000 hrs.
When running at 6 hours daily the projected lifetime is 5.7 years.
Conclusion.
Solar pool pumping initial cost is "high" but on the long run (10 years)
will pay for it self twice. In addition, it operates clean & silent.
Georgios.