Energy Saving Bulbs


Save money with Energy Saving Bulbs

Halogen and Incandescent light bulbs are typically very wasteful of electricity; they produce a lot of heat as a by-product.
Whilst this isn’t necessarily a bad thing when the temperature outside are dipping below freezing; they will cause you problems in the summer.

Why not let your central heating keep your house warm, and you look at other types of lighting.

Bulb Type Typical Usage
Halogen 20W – 75W
Incandescent 15W – 100W
Energy Savers (CFL) 6W – 23W
LED 1.2W – 15W

The light from an LED for me feels a lot nicer than the energy savers, and they’ve come down in price a lot in recent years.

Halogen – cost for using 5 for a month
  1. 5 x 20W = 100W
  2. 100W / 1000 = 0.1kW
  3. Hours used in a month = 120
  4. Kilowatts x Hours = 12 kWh
  5. Cost per kWh = £0.14
  6. Cost to run for 1 month = £1.68
LED – cost for using 5 for a month
  1. 5 x 1.2W = 6W
  2. 6W / 1000 = 0.006kW
  3. Hours used in a month = 120
  4. Kilowatts x Hours = 0.72 kWh
  5. Cost per kWh = £0.14
  6. Cost to run for 1 month = £0.10

Savings will depend on how many light bulbs you would be replacing, and how long they would be on in a given month.
The above examples assume 4 hours everyday for 28 days.

Based the above example, you could easily pay for the LED bulbs from the cost savings within a year.

Also, LED light bulbs I have, last a lot longer than incandescent bulbs.
With 7 bulbs, I’ve only had 1 blow 5 years, whereas it felt like I was changing incandescent bulbs every other month.

Daniel

Whilst building web applications, Daniel also sets up web servers from scratch because he has yet to find the perfect hosting solution. His philosophy is “Why settle, when you can build it better yourself?”

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link to April 2017

April 2017

Welcome to the "Make Money, Save Money" Newsletter. This is the twelfth and final newsletter in this format. Keep in touch on our other channels. Most of the tips in this newsletter have...