Designing optimal integrated electricity supply configurations for renewable hydrogen generation in Australia

Abstract

Summary The high variability and intermittency of wind and solar farms raise questions of how to operate electrolyzers reliably, economically, and sustainably using predominantly or exclusively variable renewables. To address these questions, we develop a comprehensive cost framework that extends to include factors such as performance degradation, efficiency, financing rates, and indirect costs to assess the economics of 10 MW scale alkaline and proton-exchange membrane electrolyzers to generate hydrogen. Our scenario analysis explores a range of operational configurations, considering (i) current and projected wholesale electricity market data from the Australian National Electricity Market, (ii) existing solar/wind farm generation curves, and (iii) electrolyzer capital costs/performance to determine costs of H 2 production in the near (2020–2040) and long term (2030–2050). Furthermore, we analyze dedicated off-grid integrated electrolyzer plants as an alternate operating scenario, suggesting oversizing renewable nameplate capacity with respect to the electrolyzer to enhance operational capacity factors and achieving more economical electrolyzer operation.

Optimization of solar and battery-based hybrid renewable energy system augmented with bioenergy and hydro energy-based dispatchable source

“… 12 , 13 The hybrid techniques with a combination of more than one optimization technique are also gaining currency to exploit the advantages of two different optimization techniques. 14 The researchers have envisaged the energy need fulfillment of off-grid communities in isolated areas 15 and developing nations. 16 …”

How Much Technological Progress is Needed to Make Solar Hydrogen Cost‐Competitive?

“…In the literature, various techno‐economic studies of hydrogen production from solar energy can be found. [ 6–12 ] Broadly speaking, they can be classified into three categories: 1.Modelling of state‐of‐the‐art technologies to obtain an estimate for the current LCOH 2 [ 6,11 ] …”

“…In the literature, various techno-economic studies of hydrogen production from solar energy can be found. [6][7][8][9][10][11][12] Broadly speaking, they can be classified into three categories:…”

Optimising Renewable Generation Configurations of Off-Grid Green Ammonia Production Systems considering Haber-Bosch Flexibility

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