Cost of running one LED bulb.

[Orchid1]

Bit of a strange question but here goes. Roughly how much would it cost to run a 9W LED bulb over 3 years if it was on 24 hours a day 7 days a week?

Asking on behalf of a neighbour so I don't know what they would be paying per unit of electricity hence asking for a "between these amounts" figure.

[buggalugs]

£35 ish?

[grahamr88]

About £30.

[Orchid1]

Ok cheers.

[SAS Tom]

Use this;

http://www.londonelectricdesign.com/led-savings.ph...

It reckons about £15 per year at 20p per kWh

Edited by SAS Tom on Saturday 4th February 19:08

[Orchid1]

SAS Tom said:

Use this;

http://www.londonelectricdesign.com/led-savings.ph...

It reckons about £15 per year at 20p per kWh

Edited by SAS Tom on Saturday 4th February 19:08

You must've read my mind i'd just spotted that haha. Cheers.

[TooMany2cvs]

Orchid1 said:

Bit of a strange question but here goes. Roughly how much would it cost to run a 9W LED bulb over 3 years if it was on 24 hours a day 7 days a week?

Asking on behalf of a neighbour so I don't know what they would be paying per unit of electricity hence asking for a "between these amounts" figure.

24hr x 9w = 216wh/day x 365 days = 78.8kwh/yr x 3 = 236.5kwh.

I dunno what tariff your neighbour's on, but I'm paying 11.2p/kwh = £26.50