TY JOUR TI Economic component of alternative power engineering KW "green" sector KW alternative power engineering KW energy saving KW energy efficiency KW economic potential KW power consumption KW energy resources KW import substitution. JO Actual directions of scientific researches of the XXI century: theory and practice AU Spakhov, S.. PY 2015 IS 3 PB FSBE Institution of Higher Education Voronezh State University of Forestry and Technologies named after G.F. Morozov