Abstract
This paper shows an introduction to a new proposal in the use of quantitative indicators for visual impact assessment over large areas. Implemented in a new software called MarRojo©. It is part of a project named AMBEMAR, which objective is to create a Multi Criteria Decision Support System (DSS) tool to find the optimal siting for offshore wind farms on the Cantabrian coast. The work consists in generating graphical information that allows introducing visual impact criteria in the design stage, and inside AMBEMAR and is essentially oriented to wind energy projects.