Renewable fuels strengthening carbon reduction towarding Carbon Net Zero commitment

In order to cope with the climate change nowaday, the use of fossil fuels, which generate massive amounts of CO₂, must be replaced with renewable fuels (the carbon-neutral approach). This paper provides an overview of definitions, characteristics and developments of several renewable alternative fuels including bioethanol, biodiesel, biokerosene, green hydrogen, green ammonia and sustainable aviation fuels. The overview also introduces pathways in the past to present and the years to comes in some countries to deal with the production and development of these fuels. This will be the esstiential benefits for researchers, manufacturers and policy makers to refer in order to understanding and finding their own pathways to achieve carbon neutrality in the near future. This is one aspect of the green transformations that the entire world is striving for.