Techno-economic analysis of long-duration energy storage and flexible power generation technologies to support high-variable renewable energy grids
- National Renewable Energy Lab. (NREL), Golden, CO (United States)
- US Department of Energy (USDOE), Washington DC (United States)
As variable renewable energy penetration increases beyond 80%, clean power systems will require long-duration energy storage or flexible, low-carbon generation. Here, we provide a detailed techno-economic evaluation and uncertainty analysis of applicable technologies and identify challenges and opportunities to support electric grid planning. We show that for a 120-h storage duration rating, hydrogen systems with geologic storage and natural gas with carbon capture are the least-cost low-carbon technologies for both current and future capital costs. These results are robust to uncertainty for the future capital cost scenario, but adiabatic compressed air and pumped thermal storage could be the least-cost technologies in the current capital cost scenario under uncertainty. Finally, we present a new storage system using heavy-duty vehicle fuel cells that could reduce the levelized cost of energy by 13%–20% compared with the best previously considered storage technology and, thus, could help enable very high (>80%) renewable energy grids.
- Research Organization:
- National Renewable Energy Lab. (NREL), Golden, CO (United States)
- Sponsoring Organization:
- USDOE Office of Energy Efficiency and Renewable Energy (EERE), Strategic Programs (EE-SP); USDOE Office of Energy Efficiency and Renewable Energy (EERE), Hydrogen and Fuel Cell Technologies Office (EE-3F); USDOE Office of Energy Efficiency and Renewable Energy (EERE), Renewable Power Office. Solar Energy Technologies Office; USDOE Office of Energy Efficiency and Renewable Energy (EERE), Wind Energy Technologies Office (EE-4W)
- Grant/Contract Number:
- AC36-08GO28308
- OSTI ID:
- 1810728
- Report Number(s):
- NREL/JA-5400-75999; MainId:6630; UUID:96a3537c-7744-ea11-9c2f-ac162d87dfe5; MainAdminID:36038
- Journal Information:
- Joule, Vol. 5, Issue 8; ISSN 2542-4351
- Publisher:
- Elsevier - Cell PressCopyright Statement
- Country of Publication:
- United States
- Language:
- English
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