Energy efficiency is defined as a top priority of the European Union, which is fully embedded in the 2020 strategy, which sets the target for 20% energy savings achieved by 2020 within the Community. To achieve this goal, the European Commission has adopted a number of regulations that impose obligations on Member States to create their own legislation and their own action plans. In this regard, the Energy Efficiency Act has been adopted in Bulgaria, which, together with the secondary legislation and the two action plans, requires specific sites to carry out energy efficiency audits and to implement measures to achieve targeted savings.