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Review and Techno-Economic Analysis of Emerging Thermo-Mechanical Energy Storage Technologies
Publikation: Bidrag til tidsskrift/Konferencebidrag i tidsskrift /Bidrag til avis › Review › Forskning › peer review
DOI
- https://doi.org/10.3390/en15176328
Forlagets udgivne version
- Khem Raj Gautam, Vestas aircoil A/S ,
- Gorm Bruun Andresen
- Marta Victoria
Thermo-mechanical energy storage can be a cost-effective solution to provide flexibility and balance highly renewable energy systems. Here, we present a concise review of emerging thermo-mechanical energy storage solutions focusing on their commercial development. Under a unified framework, we review technologies that have proven to work conceptually through project demonstration at a scale above 1 MW by describing the current state of commercial development, quantifying techno-economic parameters, outlining the challenges, and assessing each technology’s potential for commercial viability. The levelized cost of storage for thermo-mechanical energy storage at storage duration between 8 h and 1 week is cheaper than that of lithium-ion batteries and hydrogen storage; however, energy storage for such duration does not pay for itself at the current renewable penetration levels. For medium-term energy storage to be viable, at the realistic storage cost of 15 USD/kWh to 40 USD/kWh, the investment cost for power components should decrease to one-fifth of the current costs. Thermo-mechanical energy storage can be economically viable at the current investment costs in off-grid systems only when the marginal cost of alternative fuel exceeds 100 USD/MWh. We identified the cost ratio (charge power cost/discharge power cost) and the discharge efficiency as the critical technology-related performance parameters. Other external factors such as wind and solar fractions, demand, interconnections, sector coupling, and market structure play an important role in determining the economic feasibility of thermo-mechanical energy storage.
| Originalsprog | Engelsk |
|---|---|
| Artikelnummer | 6328 |
| Tidsskrift | Energies |
| Vol/bind | 15 |
| Nummer | 17 |
| Antal sider | 28 |
| ISSN | 1996-1073 |
| DOI | |
| Status | Udgivet - sep. 2022 |
Bibliografisk note
Funding Information:
This work is a part of the GridScale project funded by the Danish Energy Agency under the EUDP Program, Grant No. 64020-2120.
Publisher Copyright:
© 2022 by the authors.
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