TM65
What is TM65?
Developed by Chartered Institution of Building Services (CIBSE), TM65 is a carbon calculation framework which quantifies the environmental impact of a product's life cycle where an EPD is not available.
TM65 looks at the full life cycle of a product, including the analysis of the construction and disposal phases of a product's life cycle (as pictured, sections that apply to Energyline).
The TM65 methodology is broken into sections. In the case of Energyline, sections A, B and C are applicable and assessed to calculate the global warming potential (GWP), measured in kg CO2 eq. Where a GWP can not be calculated, TM65 uses the global or regional average to continue the section calculations - these are likely higher than what the value would be if it could have been provided.
Developed by Chartered Institution of Building Services (CIBSE), TM65 is a carbon calculation framework which quantifies the environmental impact of a product's life cycle where an EPD is not available.
TM65 looks at the full life cycle of a product, including the analysis of the construction and disposal phases of a product's life cycle.
The TM65 methodology is broken into sections. In the case of Energyline, sections A, B and C are applicable and assessed to calculate the global warming potential (GWP), measured in kg CO2 eq. Where a GWP can not be calculated, TM65 uses the global or regional average to continue the section calculations - these are likely higher than what the value would be if it could have been provided.
Defining a General Case
As Energyline systems are made to order, we have defined a general case for each Energyline system to calculate the GWP value.
Not only does this simplify the calculation, it enables us to provide a GWP value which can be extrapolated for a lineal per meter rate of the equivalent system. To do this we have assessed examples which are standard, commonly chosen and enable us to use accurate values.
Refer to the TM65 report sheets for specifications across each Energyline system. As Energyline systems are made to order, and could use different mounting methods, optics, electronic components, powder coat and more - we are able to provide the GWP values with adjustment factors.
Results
Here at Energyline we are committed to delivering great lighting and sustainable components wherever possible. Across our entire product suite, all aluminium used in Energyline profile bodies is extruded in New Zealand and smeltered at Tiwai Point, located in Southland NZ. The electricity comes from Manapouri, an underground hydropower plant. New Zealand Aluminium Smelters (NZAS) produce one of the lightest carbon footprints per tonne of aluminium, while being one of the purest and environmentally sustainable aluminium billet in the world.
In calculating the GWP in the TM65 methodology, the aluminium coefficients are as below:
New Zealand Aluminium: 6.95
Global Aluminium: 13.1
Majority of the aluminium used in Energyline is Tiwai Virgin where we use the 6.95 coefficient. In the case of sheet metal where we source from overseas, we use the higher global average at 13.1.
Below is the breakdown of materials in our general case for Energyline 75 Direct.
As pictured, while the electronic components in Energyline 75 contribute a small percentage to the overall weight, they have the largest impact to GWP contribution.
NZ Aluminium (sourced from Tiwai) makes up roughly half of the weight of our Energyline system but has far less global warming potential compared to the smaller amount of global aluminium used (where we apply the higher 13.1 coefficient).
By using NZ Aluminium, smeltered using renewable energy, Energyline has a much lower GWP than other linear lighting product where the aluminium is sourced globally, or in Australia where the energy used is less sustainable.
