Her management of the Ministry was marked by the respect of contracts made by the previous administration, by her efforts to prevent further blackouts and by the implementation of an electric model less concentrated in the hands of the state, differently from what Rosa and Sauer desired. Regarding the free market of energy, Rousseff not only kept it as she expanded it as well. José Luiz Alquéres, president of Light S.A., praised the approach taken by Rousseff, which is, accordind to him, helping the segment as a whole. He criticized, however, the delay in the implementation of the new model, but said that this is the fault of the bureaucratic government machinery. Convinced that urgent investments in power generation were required so that the country would not face a general blackout in 2009, Rousseff entered in a serious clash with then Minister of Environment, Marina Silva, which defended the embargo on several construction sites, concerned with the ecological imbalance that they could cause. Dirceu had to create a team of mediators between the two ministers in order to try to resolve their disputes.