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Blue hydrogen is produced similarly to grey hydrogen, from fossil fuels or from non-renewable energy sources, but with a lower carbon intensity. Carbon emissions are lowered by capturing, storing and/or sequestering a portion of the total CO2 produced in the process. Commercial processes can capture up to about 90% of the CO2 produced. The cost of production is mainly influenced by the cost of feedstock, utilities, the incremental cost of CO2 handling (recovery, compression, storage, transport via pipelines, sequestration), and the carbon credits that often subsidise the overall cost of blue hydrogen. Carbon credits vary with geography, region, politics, lobbying, and other factors.
Green hydrogen is produced using renewable energy. It meets the lowest carbon threshold when clean energy sources are used to separate hydrogen from other compounds such as water molecules. Clean sources of energy include wind, solar energy, hydropower, and geothermal. Different factors affect the cost of green hydrogen. The first one is the cost of the process, for example electrolysis where hydrogen is produced from water using renewable energy. The cost of generating green energy has fallen significantly in the past decade. Green hydrogen presents a number of challenges in term of 24/7 availability of green energies for its production, overall production cost, and the limited volume that can be produced. Wind and/or solar energy can be used to produce green hydrogen, which can be temporarily stored during periods when there is low power demand, or can be repurposed.

Pipelines, liquefaction plants, trucks, storage facilities,
compressors, and dispensers

Wind energy is rapidly expanding and contributes to many countries’ efforts to decrease greenhouse gas emissions. In terms of sustainable development goals (SDGs), renewable energy development promotes energy security while also facilitating community development and environmental conservation on a global scale. In this context, the current article aims to investigate wind energy’s role within the SDGs. Furthermore, the present study highlights the role of the London Array wind farm in achieving the SDGs. Indeed, deploying clean and economical energy sources in place of conventional fossil fuel power plants provides vital insights into environmental impacts.
Turbine inspection, turbine cleaning, turbine lubrication, and turbine repair.

Solar energy is environmentally friendly technology, a great energy supply and one of the most significant renewable and green energy sources. It plays a substantial role in achieving sustainable development energy solutions. Therefore, the massive amount of solar energy attainable daily makes it a very attractive resource for generating electricity. Both technologies, applications of concentrated solar power or solar photovoltaics, are always under continuous development to fulfil our energy needs. Hence, a large installed capacity of solar energy applications worldwide, in the same context, supports the energy sector and meets the employment market to gain sufficient development. This paper highlights solar energy applications and their role in sustainable development and considers renewable energy’s overall employment potential. Thus, it provides insights and analysis on solar energy sustainability, including environmental and economic development. Furthermore, it has identified the contributions of solar energy applications in sustainable development by providing energy needs, creating jobs opportunities and enhancing environmental protection. Finally, the perspective of solar energy technology is drawn up in the application of the energy sector and affords a vision of future development in this domain.
Monitoring the solar PV panels,inspection, supervision,
sending signals and messages, and receiving signals from the environment about irradiation.