This editorial provides an overview of ten scientific articles published as
the Special paper selection in Thermal Science. The papers were selected
from almost six hundred contributions, presented at the 16th Conference on
Sustainable Development of Energy, Water and Environment Systems (SDEWES
2021), held on October 10-15, 2021 in Dubrovnik, Croatia. The topics covered
in the Special paper selection include economics of electricity markets,
nuclear technology, repowering of the coal-based power plant, hybrid
renewable energy system, sustainable biomass handling and conversion,
post-combustion emissions control, and efficient cooling technology. The
editorial also emphasised the papers recently published in the Special
Issues of leading scientific journals dedicated to the series of SDEWES
Conferences.