This editorial introduces and provides an overview of a Special Issue dedicated to the jubilee 10th Conference Process Integration, Modelling and Optimisation for Energy Saving and Pollution Reduction-PRES'07. It contains nine selected papers covering various fields of energy-related most recent developments. The papers deal with carbon footprint (CFP) and CO2 emissions minimisation during energy generation, integration of fuel cell combined cycles and micro-CHP systems. They are supplemented by studies on power management strategies, gas and liquid fuel burners assessment and two industrial case studies: energy efficiency in pulp and paper Kraft mills and energy saving in reactive distillation. (C) 2008 Elsevier Ltd. All rights reserved.