Energy justice, unequal access to affordable warmth, and capability deprivation: A quantitative analysis for Belgium

•A conceptual and quantifiable framework on energy justice and capability is proposed.•It is tested with statistical analyses that are replicable in other countries.•Energy poverty is significantly associated with deprivation of many capabilities.•Social stigma against energy poor is thus evident in many aspects of daily life.•Energy-justice policy should equalise capability deployment, not energy consumption.