The publication refers to the content of PPAs (Power Purchase Agreements), which are concluded by participants of the electricity market from renewable sources. It is important that the parties to the PPA are not limited by public law regulations in the scope of exercising the civil law freedom of contract. In the area of the principle of freedom of contract, parties concluding a PPA contract may therefore exclude the application of the rebus sic stantibus clause. Therefore, the aim of the publication will be to answer the question of what importance is attached to the rebus sic stantibus clause in the area of concluding PPAs and whether the parties to such an agreement should exclude its application.