Maryland Green Power Co

LED Lighting is Finally Affordable!

LED T8’s Are Cheaper Than Fluorescent T8’s in the Long Run

LED Retrofit Analysis:

Replacement of (2) fluorescent T8 light bulbs with (2) LED T8’s (fixtures remain in place, ballast is removed):

LED Bulb Cost: $ 96.00 for (2) 48″ T8 Equivalent 120V, 15W, 300 LED, 150 lumen each)
less ballast cost: -$ 30.00 (Assume Qty(1) per Fixture)
less T8 bulb cost: -$ 8.00 for (2) bulbs

Cost differential for LED vs T8: $ 58.00 per fixture

Cost of LEDs over their 12 year lifespan (0 Replacements): $ 96.00
Replacement cost of T8 over 12 years: $ 130.00 not including installation labor
Assumptions: 3 ballast replacements and 5 T8 bulb replacements

Operating cost of 2 LEDs over 12 years: 30 watts x 40 hrs/wk x 52 wks x 12 yrs x $ 0.00011 = $ 82
Operating cost of 2 T8’s over 12 years: 68 watts x (above constants) = $ 187

Annual operating cost savings using LEDs: ($ 187 – $ 82) / 12 = $ 8.75

Payback is achieved in 5.48 years on electrical savings alone. With an expected life of 12 years, these bulbs will pay for themselves twice!

Total costs (replacement plus operating) of each technology over 12 years (comparing one-to-one):

Fluorescent: $ 158                          LED: $ 89

This does not even take into account other incentives such as commercial real estate credits for LEED certification, utility rebates, etc.

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