The main activities of "ELECTROENERGOPROEKT"LTD cover the following areas:

Studies and investigations in the field of development of the Electric Power System

• Perspective Investigations
• Energy Studies
• High Voltage Networks
• Electrical Systems
• Generation capacities
• Feasibility Studies
• Short Circuits Currents
• Flow distribution of the capacities
• Reactive Power Compensation
• Others

Preliminary design Investigations Detailed Designs and Executive Drawings for Substations and Switchgears

• Preliminary design projects and working projects for substations and electrical power lines
• Lay out solutions for switchyards up to 750 kV
• Lay out solutions for switchgears up to 110 kV
• Primary Commutation Projects
• Secondary Commutation Projects
• Relay Protection and Substation Automation Projects
• Automated systems for managing substations with PC and controllers
• Lightning Protection and Earthing Installations of Switchyards and Substations, including special solutions
• Switchgear-HV-MV (from 6 up to 400 kV) made with SF6, vacuum circuit MV breakers
• Oil Collecting Installations
• Fire Extinguish Installations
• Security Guard Equipment and Fire Alarm
• Technological Terms of References for Civil and Architectural part, Public Works. Roads etc
• Diesel - Generator Stations
• Annunciation Stations for Switchgears
• AC/DC House-load Switchgears
• Preparation and estimation of tender documents for building of substations
• Preparation and estimation of tender documents for all kinds of electrical equipment, relay protection, controllers and other
• Geodesical investigations of fields and linear objects
• Preparation of executive documentations and drawings

Renewable energy sources

• Studies for connection to the Grid  110-400 kV of Bulgaria
• Connection of plants, Wind Farms, Photovoltaic Plants and consumers of electricity to the Bulgarian HV Grid
• Research and design of Wind Farms
• Research and design of Photovoltaic Plants
• Civil Construction Part, Planning, Roads, Water supply and sewage

High Voltage Overhead Transmission Lines

• Overhead transmission Lines up to 750 kV
• Evaluation of condition of existing Transmission Power Lines and their refurbishment projects
• Design of Fiber Optic Cables for new Overhead Transmission Lines and replacement of lightning protection conductors by fiber optic cables of the existing Overhead Transmission Lines
• Researches, Design and Calculations of all kinds of elements of the Overhead Transmission Lines- conductors, lightning protection conductors, insulation, reinforcement parts, towers, fundaments etc
• Preparation and Assessment of Tender Documents for Delivery of all kinds of elements of Overhead Transmission Lines
• Consultancy and engineering services in the field of Overhead Transmission Lines
• Map-making and coordination of Overhead Transmission Lines.

Automation and Telemetry of the Energy System (АТЕS)

• SCADA systems of Energy Objects up to 750 кV
• HFC on OHL up to 750 кV
• Trouble Shouting Automation of the Energy System
• Network telecontrol of some regions of the energy system
• Fiber Optic Telecommunication Systems
• Telephone and Fiber Optic Cables
• Main and back up power supply systems of the Dispatching Centers and Energy Objects
• Technological Part of the Dispatching Centers for Power system control up to the level of NDC
• Terms of Reference for Civil and Architectural Part, Public works, electrical Part, Lighting of Dispatching Centers
• Radio Relay lines
• Ultrashort wave radio network for the needs of operation of Energy Objects
• Engineering services in the field of implementation of Automatic Dispatching Control Systems
• Preparation of Tender Documents for the delivery of Telecommunication and Data Transmission Devices
• Assessment of Tender Documents for the Delivery of Telecommunication and Data Transmission Devices.

Urban Electric Power Networks

• Design of Lay outs for the electric power supply of towns, residential districts, resorts and industrial zones
• Outside Electric Power Supply of Objects
• Design of Kiosk Switchgears
• Design of Substations without transformer
• Design of cable lines up to 110 kV
• Design of cable lines 10 kV and 20 kV
• Design of low voltage cable lines

Architectural and Civil Construction Part

• Design of all types and kinds of constructions for up to 400 kV switchyards
• Design of industrial, administrative and auxiliary buildings for the needs of substations and switchyards
• Design of steel portals up to 400 kV and reinforced concrete towers up to 20 kV
• Design of steel towers for overhead transmission lines
• Seismic Stability Calculations of existing buildings and design of support constructions
• Design of kiosk switchgears, piping networks and tunnels and 20 kV cable lines, low voltage and substations without transformers