The most common methods of hydrogen generation are the steam methane reforming of natural gas, and water electrolysis, especially proton exchange membrane (PEM) water electrolysis. Finally, hydrogen is considered a carbon-free and sustainable future fuel, if it is produced from renewable sources (green hydrogen) or fossil fuels with additional carbon capture [17]. Many publications in the literature are based on cogeneration or multigeneration units and include hydrogen as a product. [PERSON] et al. [18] analyzed a solar energy plant that was based on concentrating photovoltaic/thermal (CPVT) collectors and an ORC module with a geothermal condenser. Moreover, a water electrolyzer was integrated to produce green hydrogen associated with a storage unit and a PEM fuel cell. The utilization of ORC led to increased overall electrical efficiency by 15.72-17.78%, compared to the case of using concentrated photovoltaics (CPV) only. In November, the overall system efficiency was calculated at 18.21-21.95%, while the photovoltaic cell's efficiency was found at 21.96% when the ORC was utilized as a waste recovery system. In addition, [PERSON] et al. [19] proposed a configuration powered by PTC and a geothermal source that produced electricity and hydrogen. That system also contained an ORC and a PEM water electrolyzer. The system energy efficiency was calculated at 5.85%, the corresponding exergy efficiency was determined at 8.27%, and the total hydrogen production rate was defined at 9807.1 g/day. Finally, [PERSON] et al. [20] analyzed a polygeneration installation. The provided useful outputs are electricity, cooling, and hydrogen. It consisted of a flat plate collector, an ORC unit, an absorption cooling unit, and a PEM water electrolyzer. Through the optimization, overall exergy efficiency could be improved by 1.72-3.2%, and the overall cost rate was equal to 22.28 $/h. In the present study, a solar-powered cogeneration unit that gives power and green hydrogen is investigated. The unit is based on a PTC field combined with a thermal energy storage tank, and also contains an ORC module. Moreover, the system contains a PEM water electrolyzer, which is fed with the power produced by the ORC generator, a hydrogen compression unit, and a hydrogen storage tank. This study is an innovative one because the configuration is focused on partial electricity storage in the form of hydrogen by investigating different cogeneration scenarios for determining the optimum storage strategy. More specifically, the excess electricity production by the ORC module can be utilized for hydrogen production later use, promoting the overall system flexibility. The rest electricity can be provided to the national grid, and the compressed hydrogen can be sold as a fuel. This kind of system contributes to the increasing need for the storage of surplus renewable energy and it makes possible the higher penetration on the grid of the low-grade renewable electricity production systems. It is also suitable for independent energy systems, such as in remote areas or islands. The configuration is studied parametrically, determining the proper energetic, and exergetic evaluation rates, such as overall energetic and exergetic efficiency, as well as economic indexes, such as the payback period and net present value. Especially, the calculation of the aforementioned financial indexes is an innovative process in this kind of configuration. In addition, there is a lack of studies analyzing the storage capacity and the effect of electrolyzer input power share in a PTC-based energy system, according to financial, energetic, and exergetic criteria. Finally, the analysis is performed in steady-state operating conditions, and the simulation is carried out via the Engineering Equation Solver (EES) software.