Everyday, we turn on lights in our places of work and study and sometimes, we turn them off. In our homes we have direct ownership of the electricity bill which encourages us to save electricity. This means making sure the lights are turned off when not in use and switching the lighting to more efficient technology like LED lights.In our places of work and study we don’t pay for the electricity so does it matter turning off lighting or do we care what sort of lighting is used. You will be surprised!!!!
The School of Physics “Mechanical Workshop” reduced 0.65 metric tons of carbon dioxide per year by switching from fluorescent bulbs to LED Lighting. This lighting replacement saved an estimated €832 per annum on TCD’s Electricity costs. Overall lighting of the workshop was improved making the environment more comfortable and safer. Lamp life was doubled which reduces the amount of service calls to E&F for bulb replacements and reduces bulb waste.
Analysis of switching from Fluorescent bulbs to LED Lighting
Existing Bulb/Lamp
LED Replacement
Wattage (W)
58
57
Number of Lamps
36
18
Lamp Life (hrs)
15000
50000
Hours ON per Day
10
Electricity Cost per Day *1
€6.26
€3.07
Days used per Year (Normally)
261
Cost per Year *1
€1633
€801
Savings per Year *1
€832
Percent Saving
51%
Emissions reduction *2
654Kg of CO2 per Year
* *1 Estimated cost of unit of electricity = €0.30 / kWh *2 2020 Average All-Island CO2 emission for electricity 236 gCO2/kWh
The Museum Building Lobby has a potential to reduce 250 Kg’s of carbon emissions per year by switching from fluorescent bulbs to LED Lighting.
If this lighting was replaced, it would save an estimated €208 per annum on TCD’s Electricity costs The overall lighting would be improved making the environment more comfortable and safer. Lamp life could be improved by 50% which reduces the amount of service calls to E&F for bulb replacements and reduces bulb waste.
Facts: A typical airline flight from Dublin to New York emits approx. 650 Kg’s of carbon dioxide per trip
A typical passenger vehicle in Ireland emits approx. 4.6 metric tons of carbon dioxide per year
Analysis of switching from fluorescent bulbs to LED Lighting
20
12
14
20000
30000
24
Electricity Cost per Day
€2.01
€1.21
365
Cost per Year
€735.84
€441.50
Savings per Year
€294.34
40%
Emissions reduction *
233Kg of CO2 per Year
*3 2020 Average All-Island CO2 emission for electricity 236 gCO2/kWh
The School of Chemistry “SNIAM Teaching Lab” has a potential to reduce 3.2 metric tons of carbon emissions per year by switching from fluorescent bulbs to LED Lighting.
If this lighting was replaced, it would save an estimated €4033 per annum on TCD’s Electricity costs The overall lighting would be improved making the environment more comfortable and safer. Lamp life could be doubled reducing the amount of service calls to E&F for bulb replacements and reduces bulb waste.
Facts: A typical airline flight from Dublin to New York emits approx. 0.65 metric tons of carbon dioxide per trip
Analysis of the potentials of switching from fluorescent bulbs to LED Lighting
18.9
194
97
€20.95
€5.50
€5468
€1435
€4033
73%
3.1 tons of CO2 per Year
*1 Estimated cost of unit of electricity = €0.30 / kWh *2 2020 Average All-Island CO2 emission for electricity 236 gCO2/kWh
The School of Physics “SNIAM Building’s” has a potential to reduce 12.1 metric tons of carbon dioxide per year by switching from fluorescent bulbs to LED Lighting in the Lobby, Corridors & Halls.
If this lighting was replaced, it would save an estimated €16262 per annum on TCD’s Electricity costs The overall lighting would be improved making the environment more comfortable and safer.
Analysis of the potentials of switching from Fluorescent bulbs to LED Lighting
26
9
364
13000
€68
€23
€24871
€8609
€16262
65%
12.8 tons of CO2 per Year
*1 Estimated cost of unit of electricity = €0.30 / kWh
The School of Physics “UG Teaching Labs” has a potential to reduce 3.63 metric tons of carbon dioxide per year by switching from fluorescent bulbs to LED Lighting.
If this lighting was replaced, it would save an estimated €4616 per annum on TCD’s Electricity costs. Potentially, the overall lighting would be improved by 18% making the environment more comfortable and safer. Lamp life could be doubled reducing the amount of service calls to E&F for bulb replacements and reduces bulb waste.
222
111
€23.98
€6.29
€6258
€1642
€4616
3.63 tons of CO2 per Year
A School of Physics Standard Single occupancy Office has a potential to reduce 51 Kg’s of carbon dioxide per year by switching from fluorescent bulbs to LED Lighting.
If this lighting was replaced, it would save an estimated €64 per annum on TCD’s Electricity costs. The overall lighting would be improved making the environment more comfortable and safer. Lamp life could be doubled reducing the amount of service calls to E&F for bulb replacements and reduces bulb waste.
4
2
€0.43
€0.11
200
€86
€22
€64
74%
50 Kgs of CO2 per Year
