Energy burden and housing inequality: integrating environmental justice into affordable housing policy design

Energy burden, defined as the proportion of household income spent on residential energy, represents an important yet frequently overlooked dimension of housing affordability. Conventional affordability metrics typically focus on rent or mortgage payments while neglecting the ongoing costs of energy consumption, which obscures structural forms of housing insecurity that disproportionately affect low-income and marginalized households. This paper presents a narrative review of interdisciplinary scholarship from energy policy, housing studies, urban planning, and environmental justice to examine how housing inequality functions as a systemic driver of energy burden. Drawing on the environmental justice framework of distributive, procedural, and recognitional justice, the review demonstrates that energy burden is not simply a household-level financial challenge but a structural outcome shaped by unequal housing markets, aging and inefficient housing stock, tenure insecurity, and fragmented policy governance. The synthesis also shows that existing housing and energy policies, particularly energy efficiency incentives and affordability criteria, often privilege homeowners while excluding renters, informal housing residents, and other vulnerable groups. By integrating insights from environmental justice theory with housing policy debates, this study reframes affordable housing as a critical site for addressing energy inequality. The paper concludes by proposing a novel justice-informed conceptual framework that repositions affordable housing as a primary site for energy justice intervention and provides a roadmap for more equitable housing and energy policy design.