The demographic growth and the irreversible decline of fossil fuel deposits argue for
alternative resources to meet energy demand. The main challenge is to make renewable …

The energy sector is responsible for around two-thirds of greenhouse gas emissions, mainly
relying on fossil fuels. Thus, the industry must make substantial changes as part of the global …

In light of advancing climate change, environmentally-friendly methods for generating
renewable energy are being employed to an increasing extent. This use, however, leads to …

Hydrogen is a versatile energy carrier studied and considered to substitute fossil fuels since
the seventies after the first energy crisis. Later, a second hydrogen wave due to another …

The exponentially growing contribution of renewable energy sources in the electricity mix
requires large systems for energy storage to tackle resources intermittency. In this context …

As energy system research into high shares of renewables has developed, so have the
perspectives of the fundamental nature of a highly renewable economy. Early energy system …

The use of fossil fuels has contributed to climate change and global warming, which has led
to a growing need for renewable and ecologically friendly alternatives to these. It is accepted …

Researchers and policymakers are seeking alternatives to oil products. Hydrogen and
electricity could be the answer. This review compares both carriers and their technologies …

Hydrogen is one of the prospective clean energies that could potentially address two
pressing areas of global concern, namely energy crises and environmental issues …

Currently, meeting the global energy demand is largely dependent on fossil fuels such as
natural gas, coal and oil. Fossil fuels represent a danger to the Earth's environment and its …