1. Why kicking Colombia out of the world cup could help keep the lights on in Rio “Easy energy efficiency gains through super low loss amorphous technology” Erika Wilson, Managing Director, Wilson Power Solutions

2. 1.Brief intro Wilson Power Solutions 2.Why do transformer losses matter? 3.How can we mitigate losses? 4.Amorphous core technology 5.Additional savings through VO 6.The proof is in the pudding - Case studies 7.Q&A Agenda

3. A)I walked B)By train C)Took the car D)I flew in by helicopter E)Other How did you get to the venue today?

4. Wilson Power Solutions Leaders in energy efficient power distribution 67 years of power engineering, family run and managed in 3 rd generation Pioneers in super low loss amorphous technology

5. A)0.5% B)0.75% C)1% D)2% E)>2.5% How much energy is wasted through transformer losses worldwide?

6. Transformer losses worldwide “energy generated wasted through transformer losses” 3%

7. Transformer losses Europe 4.6 million distribution transformers (EU) Losses exceed 38 TWh /year = Annual energy consumption Columbia = 30 million tonnes CO 2

8. Transformer losses Two types of losses : No load losses = Core (iron) losses Load losses = Copper (winding) losses

9. Our solution- The Wilson e2 Creating UK’s first super low loss amorphous transformer – Amorphous metal core – Low current density conductors Reduced core losses by 75% Reduced combined losses by 50%

10. A)Flexible B)Shapeless C)Hollow D)Resilient E)Madly in love What does “amorphous” mean?

11. Amorphous core technology CRGO core Amorphous core ámorphos: origin Greek; shapeless Random atomic structure Lower hysteresis losses Lower eddy current losses Less friction when magnetic field applied Lower operating temperature Transformer technology since mid 70’s

12. Amorphous metal core manufacture CUTTING STACKING EDGE FINISHING ANNEALING V CORE FORMING CORE LACING

13. Amorphous metal core and coil assembly Core Coil Assembly HV tap leads In tank assembly Amorphous Core

14. A)3,000kWh - £270 B)13,000kWh - £1170 C)23,000kWh - £2070 D)33,000kWh - £2970 E)43,000kWh - £3870 How much will a 1MVA Wilson e2 typically save through reduced losses per year?

15. Transformer loss comparison SizeStandard loss (CRGO)Super low loss amorphous (AMT) –e2 Watts saved* kWh saved* £’s saved* Core Losses [W] Load losses [W] Total Watts Core losses [W] Load losses [W] Total Watts 1000kVA 1,35012,50013,8505006,5307,030 6,82033,072£2,976 *annual savings based on 70% load and electricity costs of £0,09/kWh

16. Savings through transformer losses Typically save 33,000kWh =£3000 /pa** Lifetime savings: £75,000 (25yrs) Mitigating ~ 17.5t CO2 /pa* *Carbon factor: 1kWh = 0.537 kg/CO2 ** Cost at terminals: 1kWh = £0.09

17. Guaranteed savings through reduced transformer losses – Core losses reduced up to 75% – Combined losses cut in half – Typical 1MVA saves £3000 pa Two areas for energy savings Potential savings through voltage management /VO – Extended tapping range – No additional costs – 2in1 solution – Typical electricity savings 5-8%

18. Savings through Voltage Management 2in1 solution Extended tapping range No additional system losses Available with OLTC 3 - 12% electricity savings

19. Allows constant output voltage –215 volts to 254 volts 17 positions in 1% steps Fully automatic AVR relay Maximising savings- improved savings up to 2% Safety & Security of supply Wilson e2 PLUS with OLTC – On Load Tap Changer

20. Do you think that Voltage Optimisation/Management actually saves energy? A)Yes- for some applications B)No C)Don’t know D)Maybe – I need more detail

21. Customer Installations Example installations – TX in series with VO equipment (ASDA) – TX retrofit (NHS) – TX new build (TESCO) Example customer energy savings

22. Wilson e2 in series with Voltage Optimisation (VO) equipment Wilson e2 in series with VO equipment VO set to reduce Voltage to ~223V Wilson e2 on nominal tap setting

23. Wilson e2 in series with VO equipment VO equipment removed from circuit Wilson e2 tapped down to deliver ~223V Load & power consumption measured RESULT: Further 3% reduction in kWh consumption Bypass

24. 5.8% voltage reduction Reduced transformer losses Overall 6.5% reduction in energy consumption Payback on capital investment = 18 months Wilson e2 transformer retrofit

25. Specify Wilson e2 (based on loss values) No dedicated VO equipment in new stores “The Wilson e2 saves Tesco 9 million kWh per year” TESCO Technical Standards Manager Wilson e2 transformer - New build

26. Over 400 client installations Leading hotel chain: 12% reduction in kWh Major retailer: 7.1% reduction in kWh Paper manufacturer: 3.5% reduction in kWh Food supplier: 11% reduction kWh /t product Major tourist attraction: 5.8% reduction in kWh Leading snacks producer: 9% reduction in kWh

27. A)Would never consider B)Might consider but need more info C)Will likely consider D)Will definitely consider Would you choose amorphous transformers for your sites?

28. Any Questions? Q&A