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Power System Flexibility - Strategic Roadmap

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Relying almost entirely on energy from variable renewable energy sources (vRES) will require a transformation in the way power systems are planned and operated. This webinar will present the report "Power System Strategic Flexibility Roadmap". This work outlines steps for overcoming the challenges in creating power systems with the flexibility needed to maintain system security and reliability while relying primarily on variable energy resources. The work is largely a synthesis of the many reports and studies on this subject. It seeks to summarize that body of work for a less technical audience that will need to put in place the policies, technical changes, and institutional systems necessary to make the power system of the future a reality. For this work we gathered opinions from a dedicated power system flexibility advisory panel, through two meetings, e- mail exchanges, and an online survey.

Published in: Technology

Power System Flexibility - Strategic Roadmap

  1. 1. Dr. Georgios Papaefthymiou 29/10/2015 Power System Flexibility Strategic Roadmap Preparing power systems to supply reliable power from variable energy resources Webinar Leonardo Energy
  2. 2. © ECOFYS | | Can the dream of 100% renewable energy be a reality? Not just a dream! 30/10/20152 G. Papaefthymiou
  3. 3. © ECOFYS | | Flexibility Roadmap 1. Report on how to transform power systems of today to power systems deriving most or all of their energy from variable renewable energy sources (VRES) 2. Work was funded by ECI 3. Advisory Panel of 40 experts contributed with comments and discussion Links: 30/10/2015 G. Papaefthymiou3 http://www.ecofys.com/en/publications/power-system-flexibility-strategic-roadmap/ http://www.leonardo-energy.org/white-paper/power-system-flexibility-strategic-roadmap
  4. 4. © ECOFYS | | Flexibility Roadmap 30/10/2015 G. Papaefthymiou4 WHY? Introduction and Purpose VISION Power System Flexibility Vision CHALLENGES Key Flexibility Challenges ACTIONS Policy and Institutional Frameworks ROADMAP SUMMARY
  5. 5. © ECOFYS | | Flexibility Roadmap 30/10/2015 G. Papaefthymiou5 WHY? Introduction and Purpose VISION Power System Flexibility Vision CHALLENGES Key Flexibility Challenges ACTIONS Policy and Institutional Frameworks ROADMAP SUMMARY
  6. 6. © ECOFYS | | Why a 100% VRES power system scenario? > VRES become competitive, and are gaining a central role in future scenarios > Relying on energy from VRES will require transforming the way power systems are planned and operated. > Such a ‘wild’ scenario serves as excellent starting point to understand the challenges > Flexibility is key in enabling this transition First step is making more efficient use of it 30/10/20156 G. Papaefthymiou
  7. 7. © ECOFYS | | Back to the basics: some definitions… What is power system flexibility? > Power system flexibility represents the extent to which a power system can adapt electricity generation and consumption as needed to maintain system stability in a cost-effective manner. > Flexibility is the ability of a power system to maintain continuous service in the face of rapid and large swings in supply or demand. > Measures of flexibility: – Ramp rates, minimum up/down times, and start-up/shut-down times are commonly used indicators of flexibility, measured as MW available for ramping up and down over time 7 30/10/2015 G. Papaefthymiou
  8. 8. © ECOFYS | | Five categories of flexibility options: 30/10/2015 G. Papaefthymiou8 System Energy Storage Supply Net- work Demand
  9. 9. © ECOFYS | | Flexibility Roadmap 30/10/2015 G. Papaefthymiou9 WHY? Introduction and Purpose VISION Power System Flexibility Vision CHALLENGES Key Flexibility Challenges ACTIONS Policy and Institutional Frameworks ROADMAP SUMMARY
  10. 10. © ECOFYS | | Flexibility Roadmap 30/10/2015 G. Papaefthymiou10 WHY? Introduction and Purpose VISION Power System Flexibility Vision CHALLENGES Key Flexibility Challenges ACTIONS Policy and Institutional Frameworks ROADMAP SUMMARY
  11. 11. © ECOFYS | | Power System Flexibility Vision: 7 key elements 1. Exploit flexibility and energy storage inherent in demand (prosumers) 2. Enable liquid, expanded and close-to-real- time power markets 3. Control VRES generators to provide grid support services 4. Institute price incentives or mechanisms that reflect diversity-related benefits in the development variable resources. 5. Deploy bulk energy storage to cover longer periods (weeks to months) of low renewable energy supply. 6. Develop smart grids for coordination of flexible resources across voltage levels 7. Establish new electric energy uses to capitalize on the surplus energy events 30/10/2015 G. Papaefthymiou11 100% VRES Power System 1. DSM 2. Power Markets 3. VRES control 4. Resource Diversity 5. Energy Storage 6. Smart Grid 7. Surplus Energy
  12. 12. © ECOFYS | | Flexibility Roadmap 30/10/2015 G. Papaefthymiou12 WHY? Introduction and Purpose VISION Power System Flexibility Vision CHALLENGES Key Flexibility Challenges ACTIONS Policy and Institutional Frameworks ROADMAP SUMMARY
  13. 13. © ECOFYS | | Flexibility Roadmap 30/10/2015 G. Papaefthymiou13 WHY? Introduction and Purpose VISION Power System Flexibility Vision CHALLENGES Key Flexibility Challenges ACTIONS Policy and Institutional Frameworks ROADMAP SUMMARY
  14. 14. © ECOFYS | | Key flexibility challenges Near-term Regime Integrating low VRES levels Reserve requirements Distribution networks start hosting DER Integrate DG Mid-term Regime Penetration in the 50% range Market incentives and harnessing flexibility Demand side flexibility Managing distribution networks Transmission network changes Market and system operation changes Energy storage Long-term Regime Very high penetrations Supplying Power During Low Output Level Events Efficient Use of High Output level Energy Stable Operation with Non-synchronous Generation 30/10/2015 G. Papaefthymiou14
  15. 15. © ECOFYS | |  Power to Fuels Generalized Role of Energy Storage 30/10/201515 Gas fields & pipelines, hydro reservoirs, coal piles, diesel tanks, etc. Primary Energy Storage Pumped hydro, compressed air, batteries, etc. Electric Energy Storage Hot and cold water storage, irrigation reservoirs, insulated buildings, etc. End Use Energy Storage Power Plants Grid End Use Energy: Heating, cooling, pumping, etc. End Use Devices Primary Energy: Uranium, natural gas, diesel, coal, wind, sun, etc. G. Papaefthymiou
  16. 16. © ECOFYS | | Flexibility Roadmap 30/10/2015 G. Papaefthymiou16 WHY? Introduction and Purpose VISION Power System Flexibility Vision CHALLENGES Key Flexibility Challenges ACTIONS Policy and Institutional Frameworks ROADMAP SUMMARY
  17. 17. © ECOFYS | | Flexibility Roadmap 30/10/2015 G. Papaefthymiou17 WHY? Introduction and Purpose VISION Power System Flexibility Vision CHALLENGES Key Flexibility Challenges ACTIONS Policy and Institutional Frameworks ROADMAP SUMMARY
  18. 18. © ECOFYS | | Policy and Institutional Frameworks 30/10/201518 G. Papaefthymiou Near Term Long TermNear Term 10% 50% 100% - Enhance markets - DSM demos - RE development Zones (REZs) - Remove penalties - Review grid codes - Market reform: shorter trading periods, ancillary services markets, market consolidation, DSM and DER participation - Incentives for locating to REZs - Renewables provide ancillary services - Transmission and distribution system coordination, strategic transmission expansion to REZs - Strategic energy storage investments - Research long-term issues - Implement large scale use of surplus electric generation - Grid support transition from conventional generation to VRES, demand resources and storage - Implement non-fossil fuels to conventional resources or long-term storage options to bridge period of low VRES energy supply - Implement solutions for stable system operation with reduced share of synchronous generators Penetration level
  19. 19. © ECOFYS | | Flexibility Roadmap 30/10/2015 G. Papaefthymiou19 WHY? Introduction and Purpose VISION Power System Flexibility Vision CHALLENGES Key Flexibility Challenges ACTIONS Policy and Institutional Frameworks ROADMAP SUMMARY
  20. 20. © ECOFYS | | Flexibility Roadmap 30/10/2015 G. Papaefthymiou20 WHY? Introduction and Purpose VISION Power System Flexibility Vision CHALLENGES Key Flexibility Challenges ACTIONS Policy and Institutional Frameworks ROADMAP SUMMARY
  21. 21. © ECOFYS | | Roadmap summary > A 100% VRES system is technically feasible and actions need to be taken to minimize costs > A three-phase transformation of the power system: 1. Near Term, lower penetration levels in which integration costs can be minimized with relatively modest changes to existing practices. 2. Mid Term, higher penetration levels, characterized by exploiting the system's available flexibility and storage on both the production and consumption sides-- making more efficient use of surplus energy. 3. Long Term, highest penetration levels, characterized by a system where markets are dominated by flexibility services and where bulk energy storage and efficient use of surplus energy become primary focuses. 30/10/201521 G. Papaefthymiou
  22. 22. © ECOFYS | |30/10/201522 Questions? Dr. Georgios Papaefthymiou Ecofys Germany GmbH Albrechtstraße 10c 10117 Berlin Germany E: g.papaefthymiou@ecofys.com I: www.ecofys.com G. Papaefthymiou

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