The Programme aims to improve the energy efficiency in the household heating sector. Currently, only 1.5% of households are connected to the natural gas grid. The Government aims to increase this percentage to 30% in 2020 and replace the electricity used for heating by highly efficient natural gas appliances. The Programme sets the target of 1 million households connected to the improved gas infrastructure, for an estimated investment of about BGN400 million (USD257 million). The estimated benefits are reducing the energy intensity of primary energy consumption by around 6% in 2020 compared to 2009, i.e. about one-third of the overall energy intensity target for Bulgaria.