This study reviews the state-of-the-art (2014–2020) of biofuels from all generation
categories, collecting information from 150 case studies to address concerns about the …

Energy storage have attracted attention to compensate for the mismatches of electricity
supply and demand caused by renewable energies. A regenerative hydrogen fuel cell …

A novel methodology is developed to dynamically assess the energy and material
investments required over time to achieve the transition from fossil fuels to renewable …

Water electrolysis powered by solar photovoltaics (PV) is one of several promising green
hydrogen production technologies. It is critical that the life cycle environmental impacts and …

Given the dire consequences of climate change and the war in Ukraine, decarbonization of
electrical power systems around the world must be accomplished, while avoiding recurring …

The objective of this study is to include environmental impact in optimization of concentrated
solar power plants previously limited to techno-economic analysis only. Performance of …

Whether renewable energy sources (RES) will provide sufficient energy surplus to entirely
power complex modern societies is under discussion. We contribute to this debate by …

Controversy exists as to whether renewable energy (RE) can provide for all the world's
energy needs. The purpose of this paper is to help resolve this vital question. Official …

This paper introduces the annual energy density concept for electric power generation,
which is proposed as an informative metric to capture the impacts on the environmental …

Is climate catastrophe inevitable? In a world of extreme inequality, rising nationalism and
mounting carbon emissions, the future looks gloomy. Yet one group of environmentalists, the …