Changing over to LED lighting

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Andrew
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Changing over to LED lighting

Nov 2017 29 07:56

Post by Andrew » Wed, 29th Nov 2017, 7:56am

Post by Andrew by Andrew Nov 2017 29 07:56

Our trust is going through the process of looking to change all the lighting to LED. The consultant has come back to us with a figure of saving equivalent to 50% of our electricity bill which both myself and the head think is over egging the cake a bit and we'd thought a saving of 10 to 15 % would be a good saving.
Has anyone changed over to LED and did it make much change to the environment in the school and what were the savings from it?
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NEITTech
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Re: Changing over to LED lighting

Nov 2017 29 08:29

Post by NEITTech » Wed, 29th Nov 2017, 8:29am

Post by NEITTech by NEITTech Nov 2017 29 08:29

I've been looking at the Green Capital DIY lighting audit to work out how many of what type of lights we currently have, and then I used the calculator to see how much electricity we can save. The thing it doesn't take into account is how often the light is used. For example, if you were to convert some fluorescent corridor lights to LED, you'd save a decent amount because they're in use most of the time. It would be worth doing. However, the fluorescent light in the PE store cupboard might only get used for 10 minutes a day. But when they say you can save 50% on your lighting electricity bill, they are treating both the same.

In fact, you probably wouldn't save enough over 5 years to justify converting the infrequently used lights around school.

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adonis
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Re: Changing over to LED lighting

Nov 2017 29 08:49

Post by adonis » Wed, 29th Nov 2017, 8:49am

Post by adonis by adonis Nov 2017 29 08:49

if you were to break down every light you may well be saving 50% . as an example if one light is on for 10minutes a day and cost £5 a year you will only save £2.50 but its still 50% if one light is on 24/7 and costs £500 a year you will save more @ £250 but still only 50% [Sleepy.png] [Sleepy.png]
Don't let the school tell you what your entitled to. Check it out and tell them.

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onlyme14
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Re: Changing over to LED lighting

Nov 2017 29 09:07

Post by onlyme14 » Wed, 29th Nov 2017, 9:07am

Post by onlyme14 by onlyme14 Nov 2017 29 09:07

We changed to LED and having a saving of 25% and the lighting difference in the school is outstanding [Like.png]

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Andrew
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Re: Changing over to LED lighting

Nov 2017 29 09:43

Post by Andrew » Wed, 29th Nov 2017, 9:43am

Post by Andrew by Andrew Nov 2017 29 09:43

Interesting opinions so far.
I know the benefits of changing over above the cost saving such as stopping headaches/eye strain but one thing were having to consider is that the money is a loan which will have to be paid back over, i think, 5 years.
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Nail
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Re: Changing over to LED lighting

Nov 2017 29 14:35

Post by Nail » Wed, 29th Nov 2017, 2:35pm

Post by Nail by Nail Nov 2017 29 14:35

Assuming it's a salix loan, I think the idea is that the savings you make on the power are what pays back the loan.

It's a slight pain to deal with from the finance side of things - yearly reporting as opposed to putting it in place.

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Nail
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Re: Changing over to LED lighting

Nov 2017 29 14:39

Post by Nail » Wed, 29th Nov 2017, 2:39pm

Post by Nail by Nail Nov 2017 29 14:39

NEITTech wrote:
Wed, 29th Nov 2017, 8:29am
I've been looking at the Green Capital DIY lighting audit to work out how many of what type of lights we currently have, and then I used the calculator to see how much electricity we can save. The thing it doesn't take into account is how often the light is used. For example, if you were to convert some fluorescent corridor lights to LED, you'd save a decent amount because they're in use most of the time. It would be worth doing. However, the fluorescent light in the PE store cupboard might only get used for 10 minutes a day. But when they say you can save 50% on your lighting electricity bill, they are treating both the same.

In fact, you probably wouldn't save enough over 5 years to justify converting the infrequently used lights around school.
You're absolutely right.

What I do now is only buy LED.

If it's a classroom then over if a flourescent bulb goes I change the whole room over and any that work are then used in other rooms until I run out and then I'll change another room to LED. If it's a store room and I've run out then I would move a bulb from a classroom and change the classroom over.

Bayonet bulbs have gone pretty cheap now so that one is fine.

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JohnE875
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Re: Changing over to LED lighting

Nov 2017 29 14:43

Post by JohnE875 » Wed, 29th Nov 2017, 2:43pm

Post by JohnE875 by JohnE875 Nov 2017 29 14:43

I am presenting a plan to our Governors next week for the whole school to be changed. Salix loan hopefully to do it in one hit. Looking at our quotes I would say a good 30% saving with a pay back in about 6 years.
On paper it is an absolute no brainer.
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chris123345
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Re: Changing over to LED lighting

Nov 2017 29 16:33

Post by chris123345 » Wed, 29th Nov 2017, 4:33pm

Post by chris123345 by chris123345 Nov 2017 29 16:33

had our school done last half term so as we are one month in will get a taste of the saving we will get ours was a loan which they have told us we can pay back out of the savings but what ever the savings our they will still get the payments set out in the loan

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Paul141
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Re: Changing over to LED lighting

Nov 2017 29 21:55

Post by Paul141 » Wed, 29th Nov 2017, 9:55pm

Post by Paul141 by Paul141 Nov 2017 29 21:55

Be very careful that you get a WRITTEN life expectancy of your LED bulbs from the supplier. I have had to replace a few and they are 3 to 4 times the cost to buy over normal tubes, so any savings you made on the unit is blown out of the water in replacing a defective tube. BTW their estimated life span is doubtful (to say the least) I worked out ours should have a 15 year lifespan, some lasted 1 year.......

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