1 Overview of Asia Pacific Markets APEx Conference 2008 Sydney Presented by Dave Carlson Chief Executive Officer, Energy Market Company, Singapore

2 The world

3 Asia Pacific presentations from… IMOWA NEMMCO KOREM PEMC KPX TRANSPOWER/M-co

4 Singapore

Benchmarking Study

6 APX – The NetherlandsKPX – Korea CAMMESA – ArgentinaM-co – New Zealand ELEXON – United KingdomNord Pool – Nordic Countries EMC – SingaporeOMEL – Spain IMOWA – Western AustraliaWESM – Philippines ISO-NE – New EnglandXM – Colombia

Benchmarking Study APX – The NetherlandsKPX – Korea CAMMESA – ArgentinaM-co – New Zealand ELEXON – United KingdomNord Pool – Nordic Countries EMC – SingaporeOMEL – Spain IMOWA – Western AustraliaWESM – Philippines ISO-NE – New EnglandXM – Colombia

8 Market design Locational Marginal Pricing Trading PeriodGate Closure SingaporeYes – 620 nodes 30 mins65 mins Western AustraliaNo30 mins hours KoreaNo60 mins14 hours New ZealandYes – 244 nodes 30 mins2 hours PhilippinesYes – 270 nodes 60 mins1 hour

9 Real-time (spot)Day- ahead Others Singapore Energy, Regulation, Primary Reserve, Secondary Reserve, Contingency Reserve Bilateral contracts: Black-start Vesting Contracts Western Australia EnergyCapacity: Annual Bilateral contracts: Energy and reserve capacity Balancing: Energy Ancillary services: Spinning reserve, load following, black- start, load rejection reserve, system restart, dispatch support Korea Energy, Available Capacity, Uplift (Constraint), AS (GF, AGC, Standing Reserve, Replacement Reserve, Black-start) SMPCapacity: Compensation for available capacity New Zealand Spot electricity, fast and sustained instantaneous reserve Philippines EnergyBilateral contracts: Energy, Ancillary Services (regulating, contingency and dispatchable reserves, black-start service and back-up support) Products traded

10 Generation Total generationInstalled Number of generation coys >5% market share Singapore38 TWh (81% gas, 17% oil, 2% other) 10,374 MW5 Western Australia16 TWh4,784 MW2 Korea374 TWh (40% coal, 36% nuclear, 18% gas, 6% other) 68,493 MW6 New Zealand - -- Philippines41 TWh (45% gas, 32% coal, 11% hydro, 8% geothermal, 4% other) 11,596 MW6

11 Retail Competition Load Profiling Used? Churn rateNumber of retail coys > 5% market share SingaporeIndustrial & commercial 67%  8.5%6 Western Australia Industrial & commercial 60%  1.4%2 KoreaNil (limited local coy market participation)  -1 New ZealandIndustrial, commercial & domestic 100% 8.0%- PhilippinesNil--1

12 Interconnections Price revision Real time dispatch scheduling Forecast information provision Settlement Surveillance and investigation Rule changes Industry stakeholder communication IT system capabilities and performance Market operator service costs Market operator performance Other detail provided

13 Why isn’t my name on the list? APX – The NetherlandsKPX – Korea CAMMESA – ArgentinaM-co – New Zealand ELEXON – United KingdomNord Pool – Nordic Countries EMC – SingaporeOMEL – Spain IMOWA – Western AustraliaWESM – Philippines ISO-NE – New EnglandXM – Colombia