Currently, the global economic crisis, one of the determining factors to reduce costs and increase competitiveness of the Russian economy is the implementation of activities conservation. Energy saving potential in our country is estimated 35% -50% of the total domestic consumption in Russia. Achieve a level of energy saving is possible due to various events, which are reflected in Energy Strategy of Russia until 2030. Namely: the application of new materials and technologies for construction and renovation of buildings and structures, use of alternative power sources – solar batteries, wind generators and the like, the introduction of led, energy-efficient lighting, various control devices and equipment modernization, generating electrical energy. Author recognizes the significance of this. About one-third of the capacity is concentrated in the electric networks of class power 0,4 kW – is the main source of electricity for manufacturing industries, housing and communal services, social, cultural and community facilities, population, budgetary organizations, transportation, communications, construction industry. Energy-saving device 'ENEF10 +1' is used as the local (individual) voltage regulation and, simultaneously, the inductive filter, preventing the load from the network of pulsed high-frequency interference. esa 'ENEF10 +1' can be used as a sole means of stable power for processing equipment, cnc shop equipment, office equipment, communications equipment and management, as well as to stabilize voltage in power networks of country cottages, country houses and farms femerskih. esa 'ENEF10 +1' can be used as effective means of saving in any lighting networks, where the level of the supply voltage exceeds 220V, automatically limiting its value at the specified level. The choice of modification esa 'ENEF10 +1' is made within the parameters of your power supply: the magnitude of fluctuations in input voltage, the voltage difference between the phases, the differences in the nature of the load, as well as based on the optimal combination of parameters – 'Price Equipment / payback period of investment in energy efficiency. " Using a professional approach to energy savings with the esa 'ENEF10 +1', you can not only realize significant energy savings up to 25%, but also extend the life of appliances and equipment, as well as to protect themselves from various emergency situations.