Portuguese cement company Semapa has no plans to sell its renewable energy company Enersis in the short-to medium-term, Chairman and Chief Executive Pedro Queiroz Pereira said on Wednesday.  "I do not think of selling (Enersis)," he told Reuters on the sidelines of the Semapa shareholder meeting when asked to respond to speculative news reports on such a sale.  Semapa controls Secil, the second largest cement company in Portugal, and Portucel, the largest producer of pulp and paper in Iberia.