cycLED - CIWM presentation
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This document discusses the complexity of procuring for a circular economy. It notes that while LED lights are more energy efficient than halogen alternatives, their manufacture requires many more materials that have complex supply chain issues. Procuring for sustainability requires considering not just the product itself but the entire value chain, life cycle impacts and design for repair/reuse to keep resources in use for as long as possible. True circular procurement demands partnerships across industries to address these systemic challenges.
cycLED - CIWM presentation
- 1. Procuring a circular economy? Towards zero waste CIWM conference 2013 Philip Harfield Senior Project Officer Ecodesign Centre
- 2. assess need
- 5. LED 25000 hours (25 years) Halogen 2000 hours (2 years) The procurement decision!
- 6. Halogen – 35 WaG LED -‐ 5 WaG procurement indicators!
- 7. LED -‐ £12.98 Halogen -‐ £1.45
- 8. Economic assessment of ligh0ng systems annual energy 126 kw/h 14 kw/h Years Service System running cost (£) Halogen System running cost (£) LED 3 96 60 10 250 72 25 481 91 (Swedish Energy Agency -‐ LCC tool)
- 10. LED closed loop opportuni3es complexity increases: technical & non-‐technical issues
- 11. WARNING contains valuable metals. cri0cal elements. Sapphire, Gallium, Aluminium, Gold, Silver, Tin, Indium, Chromium, Pla0num, Cerium, Europium, Terbium, YKrium, Silicon, Epoxy, Copper…
- 12. Indium -‐ 13 Tin -‐ 40 61 -‐ Copper Gold -‐ 45 Zinc -‐ 46 90 -‐ Nickel 116 -‐ Tanatalum geological availability? (years) (Source: Reller & Graedel, New Scien0st 2007)
- 13. impacts of supply geopolitical – volatile prices social – ethical sources conflict metals Image source: www.sustainaly3cs.com
- 14. green economy demands complexity! • 7 materials • Manufacturing energy 42MJ (per 20M lumen-‐ hours) • Use energy 60W • 30+ materials (17 materials in LED chip) • Manufacturing energy 343 MJ (per 20M lumen-‐hours) • Use energy 12.5W (DOE 2012, DEFRA 2009)
- 15. purchasing a supply chain Image : www.sourcemap.com
- 16. how will you design to reduce & recirculate resources? will collec3on rates deliver viable streams? what processing technologies are emerging? what guides or tools inform/assist decision making? is a shid to service based business models realis3c? complexity = ques3ons
- 17. take/make/use/break/ dispose the linear (sweep it under the rug) system is broken
- 18. why have you made it un-‐repairable? upgradable? Glued in baGeries Pentalobe screws Soldered in RAM Image source: www.ifixit.com is obsolescence part of your business model?
- 19. problem: the things we procure aren't green enough; the greenest things buy into systems! poten3al: need for partnerships across value chain – (waste management to design) GPP needs to ask ques3ons which reverberate through value chain
- 20. Philip Harfield (Senior Project Officer) Ecodesign Centre phil@edcw.org