Replacing fluorescent lamps with LED T8 lights

Our office currently runs standard fluorescent strip lights (1500mm T8 tubes) throughout, with over 60 bulbs across 3 floors. We are considering upgrading all the lights to LED bulbs, in order to save power and to make them compatible with an office automation system (to turn them on and off automatically).

Energy savings

So, how much energy will they save? Well a standard fluorescent bulb consumes about 58w, whereas the new LED bulbs consume around 20W. Therefore over the course of a year I would anticipate the energy savings to be as follows:

  Standard Fluorescent Bulb LED Bulb
Power Consumption 58 Watts 20 Watts
Hours in use 10 hours per day, 5 days a week, 52 per year
Hours per year 2,600
Kilowatt hours per year (watts / 1000 * hours) 150.80 kWh 52 kWh
Cost per year (at 10p per kWh) £15.08 £5.20

Thus the saving is about £10 per year per bulb.

We are currently asking suppliers to quote us for 60 bulbs, and the prices we have received so far range between £25 to £60 per bulb.

The bulbs are rated for about 50,000 hours of constant usage, which should mean they would last nearly 20 years at the rate of usage we have forecast.

Standard bulbs last about 5,000 hours (2 years) and cost around £2 each.

It looks like the energy saving bulbs should pay for themselves after 3 – 5 years, and return a yield of around 20% thereafter.

Things I haven’t factored in:

  • Cost of installation / replacing bulbs (slighty more difficult to initially install, but they last 10 times as long and therefore need less labour to replace).
  • Reduced heat from operation – might require less air conditioning in summer months)

127 thoughts on “Replacing fluorescent lamps with LED T8 lights”

  1. Huayuan Lighting Co., Ltd is a high-tech company engaged in scientific researching, manufacturing, marketing, technical support and service of LED ceiling light,LED lights,LED bulbs, LED spotlight ,LED fluorescent tube,LED lighting. We have advanced and professional equipments are utilized to aid LED assemblies of LED strips, array and various luminaire. The equipments include SMT assembly, auto soldering lines, opto-electrical test devices, light and optical distribution analysis devices. We have experienced technicians and salespersons, and We offer customer integrated-service including pre-sale service,after-sale service,technical support and transportation service.

  2. Physical Parameters:
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    Luminous efficacy: 95lm/watt
    Electrical Parameters:
    Working voltage: 85-264Vac/dc
    Frequency: 50-60Hz
    Rated power: 11 watts
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  3. good T8 led tube lights article!!we are china led tube light manufacturers factory
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    Electrical Parameters:
    Working voltage: 85-264Vac/dc
    Frequency: 50-60Hz
    Rated power: 21watts
    Protection: Input over current protection, Output short circuit protection, Output over current protection
    Pass EMI & LVD testing
    Power factor: 0.9
    Constant current LED driver

    Optical Parameters:
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    Color temperature: Warm white(3000-3500K), Daylight white(3500-4500K), Cool white(5500-6500K) options
    Emitting angle: 120 degrees options
    Light source ( LED chips) brand: CREE, Bridgelux, Edison
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    Lens type: PMMA Lens
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  7. After nearly 4 years of selling LED lighting! Which at times has been hard I can now say the good times are here?
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  9. Dear Everyone,

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  12. Hello, Sir / Madam:

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  13. Our led tube can work with existing starter and inductive ballast.

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  14. http://gzcled.com is a good factory that producing led lighting,such as: led bulbs,led pannel light, led streets light.,led candel light and so on.you will got wholesale price and top quality,welcome inquiry and contact us:
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  17. Dear Sir or Madam:

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  18. Hi, this is Gillian from Shine Technology Limited. We supply high quality led lights(CE RoHS approved with three years warranty), such as led bulbs, led penal lights, led spot lights and together with waterproof led power supplies. If any interest, pricelist is available upon request^ _ ^!

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  19. Dear Sir,
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  20. Dear sir or madam,

    This is Steele Dong from Apollux who is manufacturing and exporting LED lights worldwide for 7 years. Main products are Panel Light, Downlight, Flood Light, tubes and bulbs etc. We have CE, Rohs, UL, SAA, SASO certified. The wide voltage transformer enable lamps to be used universal.

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