Finnish renewable energy company Taaleri Energia has inaugurated the 129MW-peak (MWp) Hallanvahti solar park in Joroinen, North Savo.
The inauguration was held with project partners, stakeholders and local residents following the start of operations at the end of June 2026.
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Hallanvahti features 204,000 bifacial single-axis tracking solar panels across an approximately 200-hectare site.
The facility is designed to generate roughly 140GW-hours (GWh) of electricity per year. Taaleri states that this annual output is equivalent to the electricity consumption of approximately 18,000 Finnish homes.
The Hallanvahti project is fully owned by funds managed by Taaleri Energia. The investment in the Hallanvahti facility was made by the Taaleri SolarWind III Fund in February 2025.
Taaleri Energia managing director Kai Rintala said: “Hallanvahti is a particularly significant project for us in Finland due to its ambitious scale, technology and rapid delivery schedule.
“Thanks to our highly skilled partners, the project progressed on schedule, with particular attention paid to environmental considerations throughout the construction process.
“The Hallanvahti solar park will supply a significant volume of clean energy to the Finnish electricity market, strengthening both national resilience and the vitality of the local economy.”
The Hallanvahti project stands out for its location on drained peatland overlaid with a peat layer.
Taaleri reports that efforts were made to preserve the peat layer and effectively manage water flows during both the construction phase and the operational period.
Development of the project involved Etec Automation and its subsidiary 3Flash Finland, with Eltel Networks responsible for engineering, procurement, construction and ongoing maintenance.
The solar park has a long-term power purchase agreement with Oulun Energia and is financed by SEB.
The EU has provided support through the InvestEU Fund and additional financing via the NextGenerationEU instrument.
Taaleri Energia investment director Petri Isotalus said: “Hallanvahti is an important project for Taaleri Energia’s fund investors, Finland’s energy transition and local energy self-sufficiency.
“As electricity demand grows, renewable energy generation capacity is becoming an increasingly important investment theme, and Hallanvahti is an excellent example of this.”
Last month, Masdar and Taaleri Energia opened the Čibuk 2 wind farm, a 154MW facility in Serbia’s South Banat region, around 40km from Belgrade.
