Hydrogen Energy Systems for Local Energy Storage and

Hydrogen Energy Systems for Local Energy Storage and Services Maja Persson Final year Ph. D Student Supervisors: Dimitri Mignard, University of Edinburgh David Hogg, Bright Green Hydrogen Gareth Harrison, University of Edinburgh Stuart Galloway, Strathclyde University ETP 8 th Annual Conference, 14 November 2019

Introduction Hydrogen from renewable energy Bright Green Hydrogen and the Levenmouth Community Energy Project (LCEP) My role in the project Findings and future plans

Hydrogen from Renewable Energy Hydrogen produced by water electrolysis Why hydrogen? – Several applications – Seasonal energy storage Challenges – High costs – Low whole system efficiency

Bright Green Hydrogen Based in Methil, Fife Set up to showcase hydrogen energy storage

Levenmouth Community Energy Project (LCEP) Demonstration project to show hydrogen’s different uses 910 k. W renewable generation 8 building parallel microgrid Toshiba H 2 EMS Smart Grid control 250 k. W electrolyser/100 k. W fuel cell ESS 45 kg hydrogen storage tanks ≈ 1400 k. Wh 2 x 10 kg per day hydrogen refuellers 17 vehicle fleet

My Role in the Project Producing a techno-economic model Data and learnings from the site Exploring layout, capacities, usages, scenarios and integration of other technologies to find optimal use of hydrogen When should we use electrolytic hydrogen?

Findings Test 2: Alternative energy strategy at LCEP January 126. 5 150. 0 January 126. 5 April 7. 1 2. 8 2. 2 30. 0 12. 8 5. 8 0. 1 0. 4 28. 5 21. 023. 6 7. 5 7. 8 7. 4 0. 6 0. 0 -2. 6 -100. 0 -2. 8 -2. 9 -3. 0 -22. 1 -73. 0 Refuelling Imported Electricity -67. 4 -76. 2 Exported Electricity Fuel cell output Wind Solar Building demand Test 3: Existing control scheme and timer for electrolysers July October 113. 9 January 126. 5 150. 0 111. 1 35. 2 15. 9 8. 8 3. 6 2. 2 15. 2 44. 5 30. 0 12. 8 15. 7 4. 6 21. 0 23. 6 4. 7 15. 4 0. 0 -3. 1 -2. 9 -10. 1 -50. 0 -58. 3 -61. 9 28. 5 7. 8 Total Energy (MWh) 44. 5 35. 2 April July October 113. 9 111. 1 100. 0 50. 0 -150. 0 October 111. 1 -50. 0 100. 0 -100. 0 July 113. 9 50. 0 Test 1: Existing control strategy at LCEP 150. 0 April 100. 0 Total Energy (MWh) Modelling each component to be part of a system and balancing both academic and industry needs Current state off the model Simple technical analysis exploring different strategies 35. 2 50. 0 15. 8 9. 1 4. 1 2. 2 Imported Electricity -126. 7 Electricity Exported 12. 8 15. 3 5. 0 21. 023. 6 5. 1 15. 2 0. 0 -2. 9 -3. 0 -2. 9 -9. 0 -50. 0 -58. 0 Refuelling 44. 5 30. 0 14. 6 -54. 4 -60. 7 -100. 0 Fuel cell output Wind Solar Building demand Refuelling Imported Electricity Exported Electricity Fuel cell output Wind Solar Building demand 28. 5 7. 8

Future Plans Incorporate economic modelling in the technical model So far simple operational net profit comparison has been done Explore different capacities and control schemes Include technologies that can improve the hydrogen system Test 1 Test 2 Test 3 Test 1, selling H 2 Cost -£ 5, 668 -£ 2, 312 -£ 5, 738 -£ 5, 066 Sales £ 12, 849 £ 11, 937 £ 9, 105 £ 15, 241 Net £ 7, 181 £ 9, 625 £ 3, 367 £ 10, 175

Thank You Any Questions? Maja. Persson@ed. ac. uk