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SCALING UP ELECTROLYSERS TO MEET THE 1.5°C CLIMATE GOAL Figure 28. Cost breakdown for PEM electrolysers for a (a) 10 MW/year; (b) 1 GW/year production scale. 76 Figure 29. Potential cost decrease for electrolysers based on a learning rate and costs achieved by deployment in IRENA scenarios by 2030 and 2050. 79 Figure 30. Variable learning rate based on components for three types of electrolysers. 81 Figure 31. (a) Historical and (b) Future (based on announcements and projects) electrolyser capacity. 84 Figure 32. Estimated necessary electrolyser manufacturing capacity (GW/year) to meet different installed capacity targets by 2050 85 Figure 33. Milestones for four cost reduction strategies across three stages of deployment for electrolysers. 87 Figure 34. Potential cost reduction by implementing strategies presented in this report across three stages of deployment. 90 Figure 35. Step changes for achieving green hydrogen competitiveness. 91 Figure 36. Main actions and functions for key stakeholders influencing the scale up of green hydrogen. 93 TABLES Table 1. Table 2. Table 3. Table 4. Table 5. Table 6. Table 7. Table 8. Table 9. Table 10. Table 11. Characterisation of the four types of water electrolysers. 32 Proposed activities to improve the performance of alkaline electrolysers. 59 Proposed activities to improve the performance of PEM electrolysers. 61 Proposed activities to improve the performance of AEM electrolysers. 62 Proposed activities to improve the performance of solid oxide electrolysers. 63 Stateoftheart and future KPIs for all electrolyser technologies. 65 Iridium and platinum loading for PEM electrolysers with increased performance and material reduction strategies. 70 Economies of scale for PEM stack manufacturing. 75 Learning rate estimates for electrolysers and fuel cells. 78 Learning rate by stack component for three types of electrolysers. 80 A nonexhaustive list of key players involved in the manufacturing of water electrolyser systems. 83 BOXES Box 1. A brief look at the historical development of electrolysers 29 7PDF Image | GREEN HYDROGEN SCALING UP ELECTROLYSERS
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