Comments on: LED Decorating Equals Huge Energy Savings

By: EverydayEarth

EverydayEarth — Sun, 29 Nov 2009 21:10:00 +0000

Hi Joe…. Many thanks for looking at the numbers, I revisited this entire post and made some drastic changes. You were totally right about my original post, the numbers were wayyyy off!

I have edited the post and updated all of my calcs using some more real world figures including data from HolidaLEDs.com for drop in replacement C7 bulbs.

By: joe

joe — Sun, 29 Nov 2009 12:06:08 +0000

Woah, 1 watt for LED lights and 8 for incandescent? I think you're dramatically overestimating the amount of power these things use. My 50-LED string takes 3.4 watts, or 0.068 watts per bulb. I found a minibulb string on Amazon – 100 lights at 48 watts, so 0.48 watts per bulb. Sure, C7s use around 5W, but I don't know anyone who decorates with 1000 of those. You would have to have them on at least four different circuits!

Also, your gallons gasoline calculation is way off. 210 kWh would be 5.4 gallons of gas, not 4300. The author made a typo – you will *not* save 210 kW over a month. I'll bet most homes doesn't have 1000 A service! That would be 3950 gallons, and is the only way I can think of for you to get that number.
My recent post Tahoe's Environmental Dilema: Build Green or Not at All?

By: Sharen

Sharen — Sat, 28 Nov 2009 21:11:14 +0000

I have considered LEDs for our house but didn't like the bright white of the LEDs, but then I think there are some new LED with softer whites available? My recent post The Art of Thanksgiving

By: Best Blidgets

Best Blidgets — Sat, 28 Nov 2009 12:53:11 +0000

I never realized LEDs could save so much energy, thanks for the guide