The handbook contains basic information on the design of 35-1150 kV substations. Issues of selection of substation sites, main connection diagrams and auxiliary diagrams, main and auxiliary equipment, OSG layout and substation as a whole, general issues of structural and construction part are considered. The reference book contains everything necessary for the design of the substation 35-1150 kV. The reference book is intended for engineering and technical specialists involved in the design of substations, and can also be used by employees of construction and installation and operational organizations.