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Helleniq Renewables has completed a 100 MW/200 MWh battery storage system at Helleniq Energy’s Thessaloniki industrial site. The roughly €50 million project is connected to Greece’s transmission network and is the group’s first operational utility-scale battery system; a second project is under development in Florina.
Helleniq Renewables has completed a 100 MW/200 MWh battery energy storage system at its parent company Helleniq Energy’s industrial facilities in Thessaloniki, northern Greece, bringing the group’s first utility-scale battery project into operation. The system is connected to the national transmission network, adding large-scale storage capacity to Greece’s power system.
The project cost approximately €50 million, according to Helleniq Energy. It occupies about 100,000 square meters and uses lithium iron phosphate batteries in 56 liquid-cooled containers, arranged across three battery system areas. Energy Storage reported that the system was supplied by Huawei, in the company’s LUNA2000 series, while noting that Helleniq Energy had not named the supplier in its statement. The Huawei identification is therefore attributed to the report, rather than to a public supplier confirmation from Helleniq Energy.
Helleniq Energy said the battery is designed to carry out at least one full charge-and-discharge cycle each day. Grid connection work included a new 33/150 kV substation and an approximately five-kilometer underground high-voltage line linking the site to the Thessaloniki extra-high-voltage center. The project was selected through the first competitive tender organized by Greece’s Regulatory Authority for Waste, Energy and Water, known as RAAEY.
The company described the installation as one of the largest energy storage projects in Greece and southeastern Europe. It is also developing a 50 MW/200 MWh battery project in Florina, in northern Greece, which the company expects to complete in the near future. The source report does not provide a specific completion date for that project.
Storage Joins Helleniq’s Power Business
The Thessaloniki project gives Helleniq Energy an operating asset that can store electricity and return it to the grid, extending the group’s activities beyond its established industrial and energy operations. The company says the project supports its strategy to build a larger power and renewables business. Its practical contribution will depend on how the system is dispatched, the electricity it charges with, and the services it provides to the grid.
At 100 MW of power and 200 MWh of energy capacity, the installation’s stated capacity equates to two hours of output at full rated power, before accounting for operating limits and losses. Storage can shift electricity between times of charging and discharge and can provide grid services, but the available information does not specify which services Helleniq Energy will offer, its expected revenues, or its contracted operating arrangements. Those details will shape how the project contributes commercially and to the wider power system.
The development also adds a substantial battery asset to Greece’s storage build-out and gives Helleniq Energy a starting point for its own battery portfolio. The company’s plans and targets signal further expansion, but planned capacity should not be confused with capacity already operating.
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First Project in a Wider Build-Out
Helleniq Energy said the Thessaloniki system was chosen in RAAEY’s first competitive tender for the project. That selection preceded construction and connection; the current development is that the facility has been completed and is operational. Its grid link required dedicated infrastructure, including the substation and underground transmission line described by the company.
The project is part of Helleniq Energy’s wider ambition to grow its renewable generation and storage activities. It aims to have 1.5 GW of renewable capacity operating by 2028 and more than 2 GW by 2030. These are company targets, not confirmation that the capacity is already built or guaranteed to be delivered. Helleniq Renewables CEO Sotiris Kapellos said the group’s renewables and battery storage portfolio exceeds 6 GW, with more than 700 MW already in operation; the source report does not break down that portfolio between operating, under-construction, and development-stage assets.
The Florina battery, rated at 50 MW/200 MWh, would be a separate project from the Thessaloniki site. Its announced capacity would add to Helleniq Energy’s storage footprint if it is completed and commissioned, but the source provides no firm timetable beyond the company’s expectation that completion is near.
“With the completion of its first electricity storage project, Helleniq Energy is taking another decisive step in implementing its strategy to build a strong power and renewables pillar, as an integrated Group with a strong presence across the full spectrum of energy activities.”
— George Alexopoulos, Helleniq Energy deputy CEO
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Operating Details Still Unpublished
The source report says Helleniq Energy did not identify the battery supplier in its statement; Energy Storage reported that the equipment is Huawei’s LUNA2000 series. The company has not, in the material provided, independently confirmed that supplier attribution. Other details not reported include the system’s commercial start date, operating contracts, expected revenue, charge source, and the grid services it will provide.
The company’s estimate of at least one daily full cycle describes intended operation, but the report gives no measured performance data. It is also unclear whether the system has completed any period of commercial operation or how its dispatch will vary with market and grid conditions. Helleniq Energy’s 2028 and 2030 renewable-capacity goals, and its expectation for the Florina project, remain plans rather than completed developments.
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Florina and Capacity Targets
The next relevant milestone identified by the company is completion of its 50 MW/200 MWh Florina battery, which Helleniq Energy expects in the near future. No date, construction schedule, supplier, or grid-connection details were provided in the source report. Updates on commissioning would establish when that planned capacity becomes operational.
Further developments will also show how Helleniq Energy uses the Thessaloniki installation and whether it discloses operating results or commercial arrangements. The company’s stated targets are 1.5 GW of renewable capacity in operation by 2028 and more than 2 GW by 2030. Progress toward those goals, including which projects are built and commissioned, remains to be reported.
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Key Questions
What has Helleniq Energy brought online?
Helleniq Renewables completed a 100 MW/200 MWh battery energy storage system at Helleniq Energy’s industrial facilities in Thessaloniki, northern Greece. The source report describes it as the group’s first operational utility-scale battery project.
Who supplied the Thessaloniki battery?
Energy Storage reported that the system is a Huawei LUNA2000-series installation. The report also said Helleniq Energy had not named the supplier in its own statement, so that attribution has not been publicly confirmed by the company in the material provided.
How much did the project cost?
Helleniq Energy put the investment at approximately €50 million, equivalent to about US$56 million in the source report.
What battery project is Helleniq Energy developing next?
The company is developing a separate 50 MW/200 MWh battery in Florina, northern Greece. Helleniq Energy expects it to be completed in the near future, but no firm date was given in the report.
How often is the Thessaloniki system expected to cycle?
Helleniq Energy said the battery is expected to complete at least one full charge-discharge cycle per day. The report did not state its measured operating performance or specify the electricity market services it will provide.
Source: rss
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