Accelerating Development at the Speed of Light

Company
Overview

Darkhan-Selenge Electricity Distribution Network JSC is responsible for the distribution and supply of electricity to over 60,000 consumers across 74,000 km², covering 26 soums in three provinces since 1965.

60,000+
Consumers
74,000 km²
26
Soums served
3 Provinces
445
Employees
9 Licenses
1965
Est. year
60 years

Company
History

Darkhan-Selenge Electricity Distribution Network Joint Stock Company was founded in 1965 as the Department of Electricity Transmission Network of Darkhan and Selenge provinces.

In 2001, by Resolution No. 164 of the Government of Mongolia, the Department was transformed into Darkhan-Selenge Electricity Distribution Network (DSEDN) Joint Stock Company.

The company became privately owned through an open tender process, as outlined by Resolution No. 14 of 2003 of the Government of Mongolia and Resolution No. 454 of 2003 of the State Property Committee.

DSEDN JSC employs 445 staff members and operates under nine special permits and licenses granted by the Mongolian Ministry of Energy, the Energy Regulatory Commission, and the Mongolian Agency for Standardization and Metrology.

Service Area — 3 Provinces

Darkhan-Uul
  • Darkhan
  • Orkhon
  • Khongor
  • Sharin gol
Selenge
  • Altanbulag
  • Tushig
  • Tsagaannuur
  • Zuunburen
  • Shaamar
  • Khader
  • Eruu
  • Saikhan
  • Orkhon
  • Orkhontuul
  • Khushaat
  • Sukhbaatar
  • Javkhlant
  • Sant
  • Mandal
  • Bayangol
Tuv
  • Sumber
  • Bornuur
  • Ugtaal
  • Zaamar
  • Jargalant
  • Tseel

Licensed Services

  • 1 Electricity distribution
  • 2 Regulated electricity supply
  • 3 Installation & repair of power lines & substations (0.4–220 kV)
  • 4 Testing and adjustment services

Infrastructure &
Operations

Responsible for 29 substations at 35 kV, 494 substations at 6(10)/0.4 kV, 2,914.1 km of overhead lines, and 190.7 km of cable lines.

# Equipment Unit Quantity
1 Substations at 35/6(10) kV set 21
2 Substations at 35/0.4 kV set 8
3 Switching stations at 6, (10), (35) kV set 18
4 Substations at 6(10)/0.4 kV set 494
5 Overhead lines at 35 kV km 631
6 Overhead lines at 6(10) kV km 1,195.1
7 Overhead lines at 0.4 kV km 1,088
8 Power cable at 6(10) kV km 190.7
Lineman working on high-voltage tower
Concrete pole installation
Tower construction with crane
Substation equipment
Transformer installation
Field team preparing equipment

Major Upgrades

  • 6kV RP-1, RP-2, RP-8, RP-9, RP-10 switchgears were completely renovated
  • 35/10(6) kV Khongor, Zaamar, Tunkhel, Jims, Altanbulag substations were fully renovated
  • Constructs approximately 100 km of 0.4–35 kV overhead power lines each year

Major Projects via Tender

  • 110 kV Khentii–Sukhbaatar overhead line (301 km, 2008)
  • 110 kV Tavantolgoi–Dalanzadgad line (2013)
  • 110/6 kV Dalanzadgad, Baruun-Urt, Choibalsan substations
  • 110/10/6 kV Undurkhaan substation expansion

Technology &
Innovation

Software & Automation

STS · COS · AMI · SCADA · ERP · PowerFactory · GAIKHAM · HATSEH · Camera System. Smart meters installed for 50,000+ consumers, connected to dispatcher control.

Substation Equipment

Russian & GBE Italy transformers. SION Siemens & ABB vacuum breakers. Woodward SEEG relay protection. Euro-standard UESA load switches.

Overhead Line Upgrade

Since 2010: UKSH-9/12 concrete poles, SIP & SIP-3 wires, polyethylene insulation. First in Mongolia to use new 35 kV technology in 2022, reducing costs 3×.

High-Precision Measurement Devices

SR20 Comprehensive Cable Routing Tool
FLUKE TI32 Infrared thermometer for electrical equipment temperature measurement
FLUKE 1773 Harmonic Meter — power quality analyzer
CL3000 Fixed benchmark: checks 12 meters simultaneously. Accuracy 0.05, 380V, 0–120A
YC99T-5C Portable reference device for 1-phase and 3-phase meters
SD6300 Portable reference device for 1-phase and 3-phase meters
CL3013 Portable reference device for 1-phase and 3-phase meters
PTS3.3C Portable reference device for 1-phase and 3-phase meters
CA507 Tests 10/6/0.4 kV current transformers. Accuracy: 0.05, 5–5000A
SB2300 Portable tool for checking meter circuit connections
RS350 Portable tool for meter schematic and in-circuit troubleshooting

Fleet &
Machinery

52
Machines in regular operation
  • 1 × 25-ton crane for overhead power line work
  • 1 × 10-ton crane + 3 × 3-ton cranes
  • 5 drill cranes + 3 bucket trucks
  • 2 excavators for earthworks
  • 2 mobile cable fault diagnosis laboratories
  • 20 worker transport vehicles + 12 trucks
  • 3 GAZ-66 trucks with drilling units

Eco-Friendly Electric Vehicles

To reduce greenhouse gas emissions, DSEDN JSC has been upgrading its fleet with electric vehicles since 2022. The company now uses fuel-efficient and environmentally friendly Nissan Leaf electric cars to respond to customer requests and fulfill daily operational requirements.

Zoomlion 25-ton crane
Zoomlion crane — compact
Crane operating in field
Truck-mounted crane
JCB excavator
Nissan Leaf EV fleet — garage
DSEDN EV fleet

Milestones &
Achievements

Recognition spanning over two decades of excellence.

2005

Recognized as a "TOP-100 Enterprise" by the Mongolian National Chamber of Commerce and Industry (MNCCI)

2006

Ranked as a "TOP-100 Enterprise" by the MNCCI

2008

Recognized as "The Best Employer for Social Insurance Contributions"

2010

"TOP-100 Enterprise" by the MNCCI · "Best Employer for Social Insurance" · "Best Organization" of Darkhan Soum · Best Investor and Entrepreneur Company

2011

Best company in reducing electricity distribution losses · Received the Blue Book — Supreme Award of the Mongolian National Tax Service

2012

"Best Organization" in the Energy Sector · "The Best Company for Introducing QC100 Quality Standards"

2013

"The Best Intellectual Product" in the Energy Industry

2014

"Socially Responsible Organization" of Darkhan-Uul Province — MNCCI & MEF

2015

"Most Trusted Team by Consumers" · "Most Customer-Friendly Organization" · "TOP-5 Enterprise" — MNCCI & Governor's Office

2016

"Best Private Sector Organization in Energy Sector" — Ministry of Energy · "TOP-10 Enterprise" · Grand Prix "The Best Employer" · "Best Public Service Provider"

2017

"Champion Organization" of the energy sector · "Medallion" by the National Security Council

2018

"TOP-5 Enterprise" by MNCCI · Grand Prix "Enterprise of the Year" · Grand Prix "The Best Employer"

2019

Grand Prix "The Best Employer" — MNCCI of Darkhan-Uul Province

2022

"Best Employer of the Year" — Employer's Association · "TOP-5 Enterprise" · "The Best Entrepreneur" by MNCCI

Get in Touch

For detailed information about our company, operations, or partnership opportunities, please contact us.

info@dsedn.mn 7737-0404 Company Website →