A typical project
Replace old 8ft T12 lighting with brand new T5 or T8 high-frequency technology
Option 1 – T8 lamps and electronic adapters
This option is to replace the existing T12 8ft tubes with the electronic high-frequency adapters and shorter T8 6ft triphosphor tubes.Option 2 – brand new T5 fittings
This option will be to fit brand new high-frequency T5 fittings into the existing lighting troughs.
A typical project
Savings and Payback - Payback is calculated based on the following assumptions and facts:
Option 1 – 8ft adapter uses actual 77W
Option 2 – T5 pair uses actual 62W
Existing T12 fitting uses estimated 130W
Operating hours - 12 hours per day, 5days per week = 3120 hours per year
Electricity cost - £0.08 per kWhSavings
Option 1 saves 181896 kWh per year, or £14,552 in energy costs and 78.2 tonnes CO2 per year
Option 2 saves 233376 kWh per year, or £18,670 in energy costs and 100.4 tonnes CO2 per yearPayback
Option 1 = payback in 3.16 years
Option 2 = payback in 3.17 years
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