In 2008, Bulgaria implemented a national energy efficiency obligation standard applicable to all sectors, covering electricity, heat, natural gas, liquid and solid fuel. Potential measures include any efforts that save energy in energy generation, transmission and distribution and/or final consumption. Bulgaria has a 2014-2020 energy savings target of 69.38 ktoe final energy per year. The government proposes training in energy efficiency management and audits. Savings are to be calculated through metered savings, auditing conducted by approved engineers and annual reports submitted to regulators.