Covering (1) for greenhouses comprising a frame structure (2) with anchoring or ground foundation elements (21), uprights and cross members (22) defining the walls (12) and the roof (11) of the covering, one or more covering panels or sheets (4) and one or more photovoltaic panels (3) with cylindrical cells (31), directly or indirectly constrained to said frame structure (2) and positioned under said covering panels or sheets (4) and covered by them.
