LED shop lights in the round

[Balesl]

I'm a big fan of l.e.d. lighting, and have seen dramatic energy savings at my son's school where I'm still in the process of experimenting. FTR, I asked if I could have the liberty of lighting experimentation if I donate all materials and labor, and they agreed.

I've gotta say, the dollar figures given in the OP sound a little hard to swallow. I can tell you a little of where I'm at with the school. Some results seem much better than others.....

Exterior: previously there were (2) 175w hps barn lights, (2) 300w halogen floods, (2) double 90w incandescent floods for a total of around 1,340w

Currently there are l.e.d. floods - (2) 100w, (2) 75w, (1) 50w, (1) 30w, (2) 20w for a total of around 470w

That's about 65% less usage outside. I've calculated savings of around $20 per mo.

Classrooms: each has (6) 4-lamp t8 tandem strips, so 24 lamps per room, around 840w. All changed to 18w l.e.d. bypass tubes totaling around 430w and saving 49%. I've calculated savings of around $4.00-7.00 per room depending on usage, which varies. There are 10 classrooms, so around $50 per mo savings.

Gymnasium had (12) 300w incandescent warehouse lights. I replaced with 68w cfl https://wheelstips.com/best-led-garage-lights That's around 77% savings, which I calculated at around $65 per mo. I am looking into switching to 35w l.e.d. floods to save another $12 per mo.

[garys]

I'm surprised that you have only 65% energy savings going from incandescent or halogen to LED.
Most LED lights consume only about 15% of an equivalent incandescent light so I would expect greater savings.