Abstract: A support basement adapted to support fixedly mounted or extensible and collapsible photovoltaic panels that comprises a plurality of triangular arrays (53) interconnected by tubular members (21) and constructed with links (54, 55) and radially extending tubular members (1). Profile members (24, 30, 84) extending longitudinally along each photovoltaic panel connect the profile frames (37, 39, 69) of the photovoltaic panels to underlying triangular arrays (53) by means of connector assemblies comprising bolts (10) and nuts (12). Adjustable connector assemblies comprising bolts (27) and nuts (29a, 29b) are used to connect bottom links (55) of triangular arrays (53) with profile members (41) based onto ground pillars (51).