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EPC and Sub-EPC services for wind power, solar power and BESS projects across Europe, MENAT and CIS countries.
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As an experienced EPC and Sub-EPC partner, Helios has actively deployed its technical capabilities and specialized machinery fleet
across Europe’s major clean energy zones. Our track record spans high-yield solar installations, complex wind infrastructure works,
and grid-scale battery storage foundations delivered under strict quality baselines.
Under Construction
2025 – …
Galati, Romania · Alerion Clean Energy
Under Construction
2026 – …
Dobrich, Bulgaria · United Group
Under Construction
2026 – …
Braşov, Romania · Shanghai Electric
Under Construction
2026 – …
Braşov, Romania · Econergytech
Under Construction
2025 – …
Pitesti, Romania · Intec Energy Solutions
Under Construction
2026 – …
Wiltshire, United Kingdom · Shanghai Electric
Under Construction
2026 – …
Bács-Kiskun, Hungary · Solservices Kft
Under Construction
2026 – …
Italy · Econergytech
Completed
2023
Oradea, Romania · Intec Energy Solutions
Completed
2024
Oltenia, Romania · Shanghai Electric
Completed
2024
Oltenia, Romania · Econergytech
Completed
2024
Valcea, Romania · Chintec
Tulucesti-Foltesti WPP (Romania), 162.4 MWm | Client: Alerion Clean Energy
Execution of comprehensive civil infrastructure, access roads, crane pads, and reinforced concrete wind turbine foundations.
Kremena-Trigortsi WPP (Bulgaria), 70 MWm | Client: United Group
Complete heavy civil engineering works, specialized earthworks, logistics corridor preparation, and structural turbine foundations.
Parau 2 SPP (Romania), 233.74 MWp | Client: Shanghai Electric
Civil and electrical works for the largest solar park in our portfolio, high-velocity mechanical mounting assembly, steel structure ramming, PV panel installation and extensive DC/AC cabling networks.
Szabadszallas SPP (Hungary), 30 MWp | Client: Solservices Kft
Delivery of full mechanical structural mounting, pile-ramming, high-volume PV module deployment, and complete electrical installation works.
Oppido, Frosinone & Pomezia SPPs (Italy), 37.19 MWp | Client: Econergytech
Civil and electrical works for three solar parks in Basilicata, Frosinone and Pomezia, our first projects in the Italian market.
Parau 2 BESS (Romania), 338.64 MWh | Client: Econergytech
Comprehensive site excavation, heavy-load container foundations, raft slabs, and structural positioning management for battery blocks.
Rateşti BESS (Romania), 260.78 MWh | Client: Intec Energy Solutions
Turnkey civil infrastructure preparation, high-durability reinforced foundations, and medium-voltage grid integration workflows.
The Minety Stonehill BESS (United Kingdom), 149.7 MWh | Client: Shanghai Electric
Civil works, foundations and electrical works for a grid-scale battery storage facility in Wiltshire, our first project in the United Kingdom.
Romanian BESS Series, Oradea (100 MWh), Iancu Jianu (74 MWh), Scurtu Mare (60 MWh), Melineşti (37 MWh), Bobiceşti (28 MWh) | Client: Econergytech
Battery storage foundations and civil infrastructure co-located with the solar parks we previously delivered for the same client.
Utility-Scale Solar Portfolio (Completed), 716.51 MWp across 13 plants in Romania, Hungary and Germany
Rateşti (154 MWp), Parau (91 MWp), Oradea (86 MWp), Mezőberény (64.23 MWp), Ovidiu (60 MWp), Iancu Jianu (58.16 MWp), Scurtu Mare (56 MWp), Roşiori (40.44 MWp), Melineşti (31.18 MWp), Slatioara (30 MWp), Bobiceşti (25.30 MWp), Mihaeşti (10.20 MWp) and Burgwindheim MV cable works (10 MWp, Germany).
Parau BESS (Romania), 156 MWh | Client: Econergytech (Completed)
Comprehensive site excavation, heavy-load container foundations, raft slabs, and structural positioning management for battery blocks, our first completed battery storage project.
Completed Projects, 716.51 MWp Solar & 156 MWh BESS
Wind Under Execution, 2 Plants
BESS Under Execution, 8 Storage Sites
Solar Under Execution, 5 Plants
| No | Year | Client | Project | Location | Capacity (MWp) | Status |
|---|---|---|---|---|---|---|
| 1 | 2022 | Intec Energy Solutions | Rateşti SPP | Pitesti / Romania | 154.00 | Completed |
| 2 | 2023 | Intec Energy Solutions | Oradea SPP | Oradea / Romania | 86.00 | Completed |
| 3 | 2023 | Shanghai Electric | Parau SPP | Braşov / Romania | 91.00 | Completed |
| 4 | 2023 | Intec Energy Solutions | Burgwindheim SPP – MV Cable Works | Bamberg / Germany | 10.00 | Completed |
| 5 | 2024 | Chintec | Slatioara SPP | Valcea / Romania | 30.00 | Completed |
| 6 | 2024 | Shanghai Electric | Scurtu Mare SPP | Oltenia / Romania | 56.00 | Completed |
| 7 | 2024 | Econergytech | Iancu Jianu SPP | Oltenia / Romania | 58.16 | Completed |
| 8 | 2024 | Econergytech | Bobiceşti SPP | Oltenia / Romania | 25.30 | Completed |
| 9 | 2024 | Econergytech | Melineşti SPP | Oltenia / Romania | 31.18 | Completed |
| 10 | 2024 | Energy Solar NRG S.R.L. | Mihaeşti SPP | Valcea / Romania | 10.20 | Completed |
| 11 | 2025 | Solservices Kft | Mezőberény SPP | Mezőberény / Hungary | 64.23 | Completed |
| 12 | 2025 | Econergytech | Roşiori SPP | Alexandria / Romania | 40.44 | Completed |
| 13 | 2025 | Shanghai Electric | Ovidiu SPP | Constanta / Romania | 60.00 | Completed |
| 14 | 2026 – … | Solservices Kft | Szabadszallas SPP | Bács-Kiskun / Hungary | 30.00 | Under Construction |
| 15 | 2026 – … | Shanghai Electric | Parau 2 SPP | Braşov / Romania | 233.74 | Under Construction |
| 16 | 2026 – … | Econergytech | Oppido SPP | Basilicata / Italy | 19.96 | Under Construction |
| 17 | 2026 – … | Econergytech | Frosinone SPP | Frosinone / Italy | 8.05 | Under Construction |
| 18 | 2026 – … | Econergytech | Pomezia SPP | Pomezia / Italy | 9.18 | Under Construction |
| Total | 1017.44 | |||||
| No | Year | Client | Project | Location | WTG | Capacity (MWm) | Status |
|---|---|---|---|---|---|---|---|
| 1 | 2025 – … | Alerion Clean Energy | Tulucesti-Foltesti WPP | Galati / Romania | Goldwind | 162.40 | Under Construction |
| 2 | 2026 – … | United Group | Kremena-Trigortsi WPP | Dobrich / Bulgaria | Goldwind | 70.00 | Under Construction |
| Total | 232.40 | ||||||
| No | Year | Client | Project | Location | Capacity (MWh) | Status |
|---|---|---|---|---|---|---|
| 1 | 2025 – 2026 | Econergytech | Parau BESS | Braşov / Romania | 156.00 | Completed |
| 2 | 2025 – … | Intec Energy Solutions | Rateşti BESS | Pitesti / Romania | 260.78 | Under Construction |
| 3 | 2026 – … | Econergytech | Oradea BESS | Bihor / Romania | 100.00 | Under Construction |
| 4 | 2026 – … | Econergytech | Iancu Jianu BESS | Olt / Romania | 74.00 | Under Construction |
| 5 | 2026 – … | Econergytech | Bobiceşti BESS | Olt / Romania | 28.00 | Under Construction |
| 6 | 2026 – … | Econergytech | Scurtu Mare BESS | Teleorman / Romania | 60.00 | Under Construction |
| 7 | 2026 – … | Econergytech | Melineşti BESS | Dolj / Romania | 37.00 | Under Construction |
| 8 | 2026 – … | Econergytech | Parau 2 BESS | Braşov / Romania | 338.64 | Under Construction |
| 9 | 2026 – … | Shanghai Electric | The Minety Stonehill BESS | Wiltshire / United Kingdom | 149.70 | Under Construction |
| Total | 1204.12 | |||||