The Role of Energy Storage in Planning our Energy Needs in the UAE. Bruce Smith Director of Forecasting and Planning

Transcription

1 The Role of Energy Storage in Planning our Energy Needs in the UAE Bruce Smith Director of Forecasting and Planning

2 ADWEC s Planning Objectives Defined in Law and Licence: Policy directions (e.g. emissions targets, technology choices) Security of Supply Minimise Total System Cost Unless directed otherwise ADWEC is required to be technology neutral to achieve these objectives 2

3 Changing Energy and Water Supply Landscape The task of planning is now much more complex than when gas was plentiful and cheap. Over 25% of Abu Dhabi s energy will come from nuclear power when all 4 reactors are online Increasing domestic gas price and value: Legacy of plants designed and contracted based on a low gas price The cheapest energy available is now solar pv Membrane based water desalination technology is now preferred to thermal MSF and MED processes Tariff reforms initiated in 215: (The first increase for 15 years) Growth in demand is falling 3

4 What can Storage offer? In addition to simple energy (MWh): Firm capacity Ability to levelize load Provide ancillary services Frequency control, Backup capacity Spinning and non-spinning reserve 4

5 Balancing Tasks in Electricity Supply Systems Seconds Minutes Hourly Daily Weekly Seasonal Frequency Control Voltage Support Primary reserves Load Following Prediction error compensation Secondary reserves Ramp Rate Smoothing Load following Demand response Peak Shaving Solar output smoothing Arbitrage Wind output smoothing Weekend storage Summer / winter smoothing Summer solar use in winter 5

6 Abu Dhabi Demand Profile Average 7.2% 12.5% 4.1% 3.3% 7.7% 3.9% 4.5%

7 Daily Demand Profile in Abu Dhabi 16, Maximum Monthly Profile 14, 12, 1, August 217 Average Min Demand 11,698MW 6: - 7: Average Max Demand 14,779 MW 16: - 17: Variation of 21% below peak 8, 6, 4, 2, February 217 Average Min Demand 6,55 MW 3: - 4: Average Max Demand 7,44 MW 17: - 18: Variation of 19% below peak : 1: 2: 3: 4: 5: 6: 7: 8: 9: 1: 11: 12: 13: 14: 15: 16: 17: 18: 19: 2: 21: 22: 23: Feb Aug 7

8 Abu Dhabi Global Peak Demand (212) MWh 16, 14, 12, 1, 8, 212 6, 4, 2, 8

9 Abu Dhabi Global Peak Demand ( ) MWh 16, 14, 12, 1, 212 8, 6, 213 4, 2, 9

10 Abu Dhabi Global Peak Demand ( ) MWh 16, 14, 12, 1, 212 8, 213 6, 214 4, 2, 1

11 Abu Dhabi Global Peak Demand ( ) MWh 16, 14, 12, 1, 8, 6, , 2, 11

12 Abu Dhabi Global Peak Demand ( ) MWh 16, 14, 12, 1, 8, , 216 4, 2, 12

13 Abu Dhabi Global Peak Demand ( ) MWh 16, 14, 12, 1, 8, 6, , 2, 13

14 Daily Demand Profile in UK MW Demand in England and Wales 11 Dec 217 Dec-17 Time: Hrs Demand (MW) Variation Min 5: 24,197 45% below peak Peak 18: 44,

15 Abu Dhabi Solar Output Profile Solar Energy Output (Sweihan area) May 1% Aug 91% Feb 77% : 1: 2: 3: 4: 5: 6: 7: 8: 9: 1: 11: 12: 13: 14: 15: 16: 17: 18: 19: 2: 21: 22: 23: Peak output May Feb output August output 15

16 Winter 225 Demand / Production Profile with 5MW of uncurtailed solar PV installed MW 12 February 225 Average Nuclear Solar energy output Battery Conventional Load 16

17 Winter 225 Demand / Production Profile with 5MW of solar PV installed and output curtailed to ensure 5% of residual demand met by flexible generation MW 12 February 225 Average Nuclear Curtailed solar output Required Conventional Load 17

18 Winter 225 Demand / Production Profile with 5MW of solar PV installed and output curtailed to ensure 5% of residual demand met by flexible generation MW 12 February 225 Average 1 8 5hours of storage of up to 7MW limits ramp rate to 5MW per hour Nuclear Curtailed solar output Battery Required Conventional Load 18

19 Winter 225 Demand / Production Profile with 5MW of solar PV installed and output curtailed to ensure 5% of residual demand met by flexible generation MW 12 February 225 Average Nuclear Curtailed solar output Battery Required Conventional Load Residual Load no solar 19

20 Winter 225 Demand / Production Profile with 5MW of solar PV installed and output curtailed to ensure 5% of residual demand met by flexible generation MW February 225 Average Nuclear Curtailed solar output Battery Required Conventional Load Residual Load no solar Residual load with solar curtailed 2

21 Winter 225 Demand / Production Profile with 5MW of solar PV installed and output curtailed to ensure 5% of residual demand met by flexible generation MW February 225 Average Nuclear Curtailed solar output Battery Required Conventional Load Residual Load with solar Residual Load no solar Residual load with solar curtailed 21

22 Winter 225 Demand / Production Profile with 5MW of solar PV installed and output curtailed to ensure 5% of residual demand met by flexible generation MW 25 August 225 Max MW of installed solar PV Capacity provides 8% of total energy in August TIME Nuclear Max potential solar output Conventional 22

23 Take-aways 1. System Flexibility will be essential nuclear and solar reduce it. 2. Batteries can t provide economic long term storage. 3. Detailed study is planned this year to understand further the potential value and opportunities for energy storage. 4. Batteries have potential to enable increased renewable penetration. 5. How to combine storage plant operation at shorter timescales 6. Value and role of distributed storage unclear: how can it be integrated into the bulk power system? 7. Gas likely to remain the most flexible and cost effective long term energy storage 23

24 Thank you For further information please contact: Bruce Smith +971 () Abu Dhabi Water & Electricity Company Tel: Fax: