Promoting the use of renewable energy sources is important both to the reduction of the EU's dependence on foreign energy imports, and in meeting the targets set to tackle the green house emissions issue. In its role as a Member State, Romania has to commit to the EU tar- gets set for the renewable energy sector. In this context Romania has opted for a system of tradable green certificates (TGC) awarded for the power produced from renewable sources. Power suppliers are obliged to meet annual green certificates purchase quotas, depending on their total power supply. Compared to the support schemes based on a feed in tariff which have been implemented in the majority of the EU countries, the support scheme based on green certificates implies greater complexity of investment strategies due to the new thus generated market for such intangibles. Hence, the power suppliers take over a new active role as major players in the support scheme process. This work completes the picture about the impact of the support scheme based on TGCs by bringing into discussion the role of one of the most important actors: the power supplier. Beside the assessment of the possible impacts on the development of the renewable energy market in Romania, a benchmark at European level will analyze countries that have already implemented support schemes based on tradable green certificates, examining their related experience and the effectiveness of the support schemes, showed in developing their re- newable energy market. Finally this work presents a procurement strategy for a power supplier in Romania in order to cover the risks on an unstable market which also impacts directly the investments in renewa- ble energy projects and the development of the renewable energy market as a whole.