1. How are engineering companies addressing the issue of energy efficiency?

2. Ingenuity & insight – the Ausenco group | June 2012 2 Focussing Questions: When is 'energy efficiency' important? What is 'energy efficiency' to a project developer? What is the measure of 'energy efficiency'? How does this impact on technology selection?

3. Ingenuity & insight – the Ausenco group | June 2012 | 3 When is 'energy efficiency' important? Limited or very high cost energy (water) supply Good corporate citizenship Operating costs optimisation Optionality – unreliable and multiple supply systems

4. Ingenuity & insight – the Ausenco group June 2012 | 4 What is 'energy efficiency' in project development? Process selection - particularly comminution High efficiency drives High efficiency lighting Optimised materials handling (trucking, conveying and pumping) Optimised elevations Water recovery efficiency – (water can cost $4/m 3 )

5. Ingenuity & insight – the Ausenco group | June 2012 | 5 What is the measure of 'energy efficiency'? $ cashflow, NPV, ROV Energy cost and supply risks are factored in Corporate 'good citizen' policies are considered kWh/t ore processed? kWh/t metal produced? t CO 2 /t ore produced (including inherent energy)? t CO 2 /t metal produced (including inherent energy)?

6. Ingenuity & insight – the Ausenco group | July 2010 | 6 Ingenuity & insight – the Ausenco group

7. Ingenuity & insight – the Ausenco group | June 2012 | 7 A cycle Need Idea Innovation Cost reduction Paradigm shift (only when cost effective)

8. Ingenuity & insight – the Ausenco group | July 2010 | 8 Why doesn’t every one drive a Prius?

9. Ingenuity & insight – the Ausenco group June 2012 | 9 Energy efficient operation  Cost inefficient (unless you are a taxi operator)

10. Ingenuity & insight – the Ausenco group | June 2012 | 10 Conclusions Energy efficiency is a sub-set of cost effectiveness The key driving forces are commercial –Energy costs –Energy supply limitations –Revenue implications To optimise energy efficiency requires a 'business optimisation perspective' Cost People Energy

11. Thank you Ingenuity & insight – the Ausenco group | July 2012 | 11