Optimal dispatch model for PV-electrolysis plants in self-consumption regime to produce green hydrogen: A Spanish case study

• Published in: International journal of hydrogen energy Vol. 47; no. 60; pp. 25202 - 25213
• Main Authors: Matute, G., Yusta, J.M., Beyza, J., Monteiro, C.
• Format: Journal Article
• Language: English
• Published: Elsevier Ltd 15-07-2022
• Subjects: Electrolyzer; Green hydrogen; Optimal dispatch; Photovoltaic energy; Self-consumption; Wholesale electricity markets; Green hydrogen; Wholesale electricity markets; Photovoltaic energy; Optimal dispatch; Electrolyzer; Self-consumption
• ISSN: 0360-3199; 1879-3487
• DOI: 10.1016/j.ijhydene.2022.05.270

The production of green hydrogen from renewable energy by means of water electrolysis is a promising approach to support energy sector decarbonization. This paper presents a techno-economic model of plants with PV sources connected to electrolysis in self-consumption regime that considers the dynamics of electrolysis systems. The model calculates the optimal hourly dispatch of the electrolysis system including the operational states (production, standby, and idle), the load factor in production, and the energy imports and exports to the electricity grid. Results indicate that the model is a useful decision support tool to operate electrolysis plants connected to PV plants in self-consumption regimes with the target of reducing hydrogen production costs.
•A techno-economic model of electrolysis plants with PV sources is formulated.•The model calculates the optimal hourly dispatch of the PV-electrolysis plant.•Forecast of solar PV production and market electricity prices are considered.•Environmental constraints are added to ensure solar PV is used to produce hydrogen.•A case study based on real data is used to test the model in a series of scenarios.