  We analyze a macroeconomic model with intergenerational equity considerations
and spatial spillovers, which gives rise to a multicriteria optimization
problem. Intergenerational equity requires to add in the definition of social
welfare a long run sustainability criterion to the traditional discounted
utilitarian criterion. The spatial structure allows for the possibility of
heterogeneiity and spatial diffusion implies that all locations within the
spatial domain are interconnected via spatial spillovers. We rely on different
techniques (scalarization, $\epsilon$-constraint method and goal programming)
to analyze such a spatial multicriteria problem, relying on numerical
approaches to illustrate the nature of the trade-off between the discounted
utilitarian and the sustainability criteria.
