In the Biosystems Engineering subsection, the journal publishes research in engineering and the physical sciences that represent advances in the understanding and management of the performance of biological systems for sustainable developments in agricultural machinery, instrumentation, machine vision and machine learning, bioproduction processes, the food chain, and land use and the environment. The subject matter of the journal reflects the wide range and interdisciplinary nature of research in engineering for biological systems. Papers may report the results of experiments, modeling, theoretical analyses, data-driven findings, design of, or innovations relating to, machines and mechanization systems, processes or processing methods, equipment and constructions, experimental equipment, and laboratory and analytical techniques.

In the Renewable Energies subsection, the journal covers research in the following areas: biomass conversion, photovoltaic technology conversion, solar thermal applications, wind energy technology, desalination, solar and low energy architecture, climatology and meteorology, geothermal technology, and socio-economic and policy issues in agriculture.