June 16, 2021
Hydrogen has the potential to be combined with offshore wind energy to aid in overcoming disadvantages such as the high installation cost of electrical transmission systems and transmission losses. This paper aims to outline and discuss the main features of the integration of hydrogen solutions in offshore wind power and to offer a literature review of the current state of hydrogen production from offshore wind. The paper provides a summary of the technologies involved in hydrogen production along with an analysis of two possible hydrogen producing systems from offshore wind energy.
Assessment of Energy Storage from Photovoltaic Installations Using Hydrogen or Batteries
August 4, 2020
This paper presents a series of economic efficiency studies comparing three different investment variants: without energy storage, with energy stored in batteries and hydrogen installation with a PEM fuel cell stack for a location in Poland.
Storing Energy as Hydrogen
November 19, 2020
Extensive research on photovoltaics (PV) cooperating with energy storage systems are conducted all over the world. For example, in reference [27] the authors show a PV installation connected with a hydrogen production system. Paper demonstrates that with a proper design of the system proposed by the authors it can operate correctly charging the batteries, supplying the electrolyzer, and occasionally producing excess electricity. The paper [28] presents a self-sufficient solution for residential buildings with photovoltaic and battery storage systems. Model presented by the authors included hybrid PV and hydrogen fuel cell installation with a battery energy storage unit for system optimization. In reference [29] a study of optimum design, size, and economic analysis of photovoltaic installations with a battery system and a standalone photovoltaic with battery and hydrogen production are shown. In another reference [30] authors proposed the photovoltaic-hydrogen-fuel cell installation as a solution for reactive power control and optimization solution which can help improve the quality of supplied power. Another PV-H2 installation is presented by the authors in [31]. The research shows two solutions—with and without batteries’ subsystem, as well as two different locations to find the best balance between the efficiency and sizes of the installations. Photovoltaic systems are also frequently connected with wind installations in hybrid units for hydrogen production [32,33]. Review of recent trends in optimization techniques for PV-wind hybrid energy systems are presented in [34]. Solutions for systems containing photovoltaic installations with Proton Exchange Membrane (PEM) electrolyzers for hydrogen production are presented in [35,36,37].
Storing Hydrogen
October 19, 2020
In some areas, the problem of wind and solar power curtailment is prominent. Hydrogen energy has the advantage of high storage density and a long storage time. Multi-energy hybrid systems including renewable energies, batteries and hydrogen are designed to solve this problem.
Dissociation Of Water Into Hydrogen And Oxygen Through A Combination Of Electrolysis And Photocatalyst
July 28, 2020
In this paper, through a review of the literature, a method of separating hydrogen and oxygen from water through a photocatalysis process that utilizes the energy of photons from visible light is combined with the electrolysis process to increase hydrogen production with a fairly small current.
Enhancing Photovoltaic Performance of Porous Silicon Solar Cells
April 21, 2021
This work examines nanocrystalline porous silicon (PSi) prepared by electrochemical etching of p type silicon wafers.
Improving Sustainable Hydrogen Production From Green Waste
September 16, 2021
Bio-hydrogen production via dark fermentation of low-value waste is a potent and simple mean of recovering energy, maximizing the harvesting of reducing equivalents to produce the cleanest fuel amongst renewables. Here, an alternative application of green wastes, low-value compost and intermediate products (partially composted but unsuitable for completing the process) is studied, pointing at the autochthonous microbial consortium as an already selected source of implementation for biomass degradation and hydrogen production.
Green Hydrogen, Spaceship Earth, and a Circular Economy
December 2020
Based on a review of the literature, researchers synthesize some aspects which represent in their understanding the essence of the circular economy concept. While in no way intended to be absolute, definitive and final, these aspects represent a level of understanding of the concept at this specific moment.
Societal Consequences to the Transition to Green Hydrogen
July 15, 2021
The need for green hydrogen is likely to require massive expansion of renewable energy plants. Researchers have identified a gap between political action, technological developments, and expertise from the social sciences and humanities as the world transitions from fossil fuels to green hydrogen. They argue that the respective funding and research needs to be scaled up before energy infrastructures are built to forestall possible long-lasting socio-ecological mismatches.
Solar Energy As Natural Resource Utilization In Urban Areas
January 1, 2007
This research evaluates urban areas’ potential to utilize rooftop solar cells as power plants. They are environmental-friendly and potentially viable electrical generators.