From November 15, 2010 the Decree has been binding which relates to enterprises which may significantly influence the environment. The changes were introduced i.a. to the provisions relating to the following industry branches: mining and excavation, renewable energy sector and waste management. For example, nowadays, to construct any water power plant a decision on environmental conditions will be required. It results from the fact that in the new decree, the quantity threshold of 2.5 MW for water power plants was cancelled.