Author: morrall

Product.	50watt / Conventional / halogen.	4 watt / Led bulb.
Power usage	50 watts/hr	4 watts/hr
Life expectancy	5-10 thousand hours	50 thousand + hours
Price of one bulb	£2	£10

Old fashioned Halogen Light bulbs v’s LED Light bulbs.

Cost of 5 halogen light bulbs / equals the life time of one led / light bulb	(5 bulb ) £2x5= £10	(1 bulb ) / £10 x 1= £10
Labour to change / Light bulbs	5 x £5= £25	1 x £5 =£5
Total power consumed 50,000 hours	2500 kw/hours	200 kw/hours
Total cost of electricity / @ 14pence per kw/hr	£385	£28
Total cost bulbs, including / the electricity used.	£385	£43
Savings for using each LED 4watt bulb compared to a 50watt halogen bulb over 50,000 hours of use £342.

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