We went way over budget on our pool design. We also had no desire for multicolor LED so the appeal for an adder for White LED lighting didn't make sense considering I just couldn't spend any more money on the pool construction.
I've seen a few mentions on here that incandescent lighting just doesn't make sense anymore. I decided to not use the PB adder costs for my ROI calculation, but the price to purchase an equivalent Incandescent & LED light from an online supplier.
Pentair Incandescent 300W, 120V, 100FT of cable $219.95: Amazon.com : Pentair 78928500 Amerlite Underwater Incandescent Pool Light with Stainless Steel Face Ring, 120 Volt, 100 Foot Cord, 300 Watt : Swimming Pool Lighting Products : Patio, Lawn Garden
Pentair LED 300W Equivilant, 120V, 100FT of cable $413.89: Amazon.com : Pentair 601102 IntelliBrite 5G White Underwater LED Pool Light, 120 Volt, 100 Foot Cord, 300 Watt Equivalent : Swimming Pool Lighting Products : Patio, Lawn Garden
I currently pay $.06 kWh
The LED uses ~260 watts less than the Incandescent.
Assuming I run the lights for 4 Hours, twice a week, all year that comes down to (260W x 8 x 52) / 1000 = ~108 kWH x .06 = $6.48 annual savings
The cost delta is $193.94 / $6.48 = ~30 year payback.
Even if I double the usage all year long that's still 15 years. Now I don't anticipate either of these lights lasting 15 years, at least the experience I've had with residential LED lighting says that.
Are there other reasons to switch to LED in the future once these burn out? I imagine those in areas with much higher electricity costs would have a different opinion.