Aerial network & 750 kV mastery
Seamless, end-to-end transmission from generation sites directly to the national grid — maximum precision, accelerated project velocity.
Line energised
50.00 Hz · 0.4 – 750 kV
WALDEVAR Power Gridex Elemo · since 1994
Powering the European Energy Transition.
Elite high-voltage infrastructure and turnkey grid solutions — from generation site to national transmission. Backed by WALDEVAR Holding — 4 GW contracted across utility-scale renewables.
- 750kVUltra-high-voltage lines
- 1,500+ kmHV transmission lines built
- 4,000+ kmOPGW mounted
- 4GWContracted · WALDEVAR group
One partner · every voltage class
0.4750kV
Specialized engineering and execution for critical 750 kV transmission infrastructure — maximum grid stability, power capacity and seamless integration on strategic European energy corridors.
01 — Who we are
Since 1994, WALDEVAR Power Grid — formerly Elemo — has engineered and built the high-voltage backbone that carries energy from where it is generated to where it is needed. Today, backed by WALDEVAR Holding — 4 GW contracted across utility-scale renewables — we deliver a fully integrated approach: from generation site to national transmission.
Next-generation network capability
A relentless focus on high-voltage innovation, with continuous investment in cutting-edge machinery for every division.
Backed by institutional strength
Secure capital reserves, robust supply chains and the operational scale for massive cross-border European tenders.
02 — Execution capacity
Proven capacity. Institutional scale.
750kV
Ultra-high-voltage expertise
Critical 750 kV transmission infrastructure on strategic European energy corridors.
30+
Years of expertise · since 1994
100+
T&D projects delivered
1,500+ km
HV transmission lines constructed
4,000+ km
OPGW on 110–400 kV lines
60+
World-class specialists
100%
In-house EPC execution
03 — Voltage range
From 0.4 kV to 750 kV.
Active class
50–1000 V
50–1000 V
Low voltage
Low-voltage lines.
5–35 kV
Medium voltage
Overhead & underground lines, transformer substations.
35–110 kV
High voltage
High-voltage overhead lines.
220–400 kV
Extra-high voltage
Extra-high-voltage overhead lines.
750 kV
Ultra-high voltage
Ultra-high-voltage lines on strategic cross-border corridors.
Design services & construction services in every voltage class
04 — Comprehensive EPC services
Turnkey. 100% in-house.
Complex engineering, design, heavy civil foundations, tower erection, conductor stringing and advanced station automation — executed by our own teams, under one contract.
- 01
Engineering & design
Lines and substations in every class, 50 V to 750 kV. ANRE C1B design.
- 02
Heavy civil foundations
New tower and substation foundations; repairs of existing ones.
- 03
Tower erection
Taking down existing towers and erecting new structural towers.
- 04
Conductor stringing
Active and safety conductors; replacing insulator chains.
- 05
OPGW integration
Earth wires replaced with Optical Ground Wire — 4,000+ km mounted.
- 06
Station automation
Substation automation to IEC 61850 and PPC integration.
- 07
Repairs & breakdowns
Running and capital repairs, rapid breakdown retrievals, 0.4–750 kV.
Project delivery
00%
05 — Part of WALDEVAR Holding
From generation site to national transmission.
Backed by the financial muscle and strategic leadership of WALDEVAR Holding — a recognized powerhouse in utility-scale renewable energy — with the capital reserves, supply chains and scale required for massive cross-border tenders.
4GW
Contracted capacity · WALDEVAR group
Utility-scale solarGeneration
Floating PVGeneration
Step-up substationIEC 61850 · PPC
HV / UHV lines110 – 750 kV
National gridTransmission
44.20°N · 24.60°ESouth-East Europe
06 — Reference executions
Critical. Cross-border. International.
Cross-border · RO → BG
Tower 406 on the 750 kV Isaccea–Varna line
Successfully replaced Tower 406 on the critical 750 kV Isaccea–Varna cross-border line between Romania and Bulgaria.
- Voltage
- 750 kV
- Scope
- Tower replacement
- Corridor
- RO – BG
Urban engineering · RO
Nicolae Grigorescu passage
Rapidly designed and executed the complex coexistence of the Nicolae Grigorescu passage with 110, 220 and 400 kV overhead lines.
- Voltage
- 110 / 220 / 400 kV
- Scope
- Design + execution
- Setting
- Dense urban
International · GR
Helicopter-assisted stringing in Greece
Executed highly complex, helicopter-assisted conductor mounting on 150 kV lines in Greece.
- Voltage
- 150 kV
- Method
- Aerial stringing
- Country
- Greece
Partnership · ATERMON S.A.
400 kV double-circuit overhead line
Partnered with ATERMON S.A. to deliver a 400 kV double-circuit overhead transmission line.
- Voltage
- 400 kV d.c.
- Partner
- ATERMON S.A.
- Type
- Overhead line
Nationwide · RO
Massive-scale OPGW integration
More than 4,000 km of Optical Ground Wire mounted on 110, 220 and 400 kV overhead transmission lines across Romania.
- Length
- 4,000+ km
- Voltage
- 110 / 220 / 400 kV
- Scope
- OPGW mounting
Grid stability · 0.4 – 750 kV
100+ turnkey repair works
End-to-end running and capital repairs, and rapid breakdown retrievals across all voltage ranges — keeping the grid stable.
- Works
- 100+
- Range
- 0.4 – 750 kV
- Built
- 1,500+ km HV
1 / 6
07 — Certifications
Certified to the highest European standards.
A complete suite of IQNet / SRAC certifications and ANRE accreditations — a low-risk partner for major European tenders.
9001
ISO 9001:2015
Quality management system
IQNet certified
14001
ISO 14001:2015
Environmental management system
IQNet certified
45001
ISO 45001:2018
Occupational health & safety
IQNet certified
9001
ISO 9001:2015
Quality management system
SRAC certified
14001
ISO 14001:2015
Environmental management system
SRAC certified
45001
ISO 45001:2018
Occupational health & safety
SRAC certified
C1B
ANRE C1B
Infrastructure design engineering
Romanian Energy Regulatory Authority
D2
ANRE D2
Grid line execution
Romanian Energy Regulatory Authority
E2
ANRE E2
Substation works execution
Romanian Energy Regulatory Authority
08 — Clients
Trusted by industry leaders.
TranselectricaEnel DistribuțieAtermon S.A.Romelectro S.A.
TranselectricaEnel DistribuțieAtermon S.A.Romelectro S.A.
SISEE · ElectricaSmart S.A.Elcomex I.E.A.Transelectrica
SISEE · ElectricaSmart S.A.Elcomex I.E.A.Transelectrica
- Transelectrica
- Enel Distribuție
- ATERMON S.A.
- Romelectro S.A.
- SISEE (Electrica)
- SMART S.A.
- ELCOMEX I.E.A.
- 1,500+ kmhigh-voltage lines constructed
- 100+turnkey running & capital repair works
- 4,000+ kmOPGW on 110, 220 and 400 kV lines
09 — Let's build
Ready to Power the Future.
Tenders, EPC partnerships and grid connections from 0.4 kV to 750 kV — talk to our engineering team.
