Watts and Drops: Co-Scheduling Power and Water in Desalination Plants
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arXiv
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| Autores principales: | , , , |
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| Formato: | Preprint |
| Publicado: |
2025
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| _version_ | 1866916964897652736 |
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| author | Alahmed, Ahmed S. Botterud, Audun Amin, Saurabh Al-Awami, Ali T. |
| author_facet | Alahmed, Ahmed S. Botterud, Audun Amin, Saurabh Al-Awami, Ali T. |
| contents | We develop a mathematical framework to jointly schedule water and electricity in a profit-maximizing renewable colocated water desalination plant that integrates both thermal and membrane based technologies. The price-taking desalination plant sells desalinated water to a water utility at a given price and engages in bidirectional electricity transactions with the grid, purchasing or selling power based on its net electricity demand. We show that the optimal scheduling policy depends on the plant's internal renewable generation and follows a simple threshold structure. Under the optimal policy, thermal based water output decreases monotonically with renewable output, while membrane based water output increases monotonically. We characterize the structure and intuition behind the threshold policy and examine key special properties. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2509_19243 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Watts and Drops: Co-Scheduling Power and Water in Desalination Plants Alahmed, Ahmed S. Botterud, Audun Amin, Saurabh Al-Awami, Ali T. Systems and Control Theoretical Economics We develop a mathematical framework to jointly schedule water and electricity in a profit-maximizing renewable colocated water desalination plant that integrates both thermal and membrane based technologies. The price-taking desalination plant sells desalinated water to a water utility at a given price and engages in bidirectional electricity transactions with the grid, purchasing or selling power based on its net electricity demand. We show that the optimal scheduling policy depends on the plant's internal renewable generation and follows a simple threshold structure. Under the optimal policy, thermal based water output decreases monotonically with renewable output, while membrane based water output increases monotonically. We characterize the structure and intuition behind the threshold policy and examine key special properties. |
| title | Watts and Drops: Co-Scheduling Power and Water in Desalination Plants |
| topic | Systems and Control Theoretical Economics |
| url | https://arxiv.org/abs/2509.19243 |