Sungrow, a global leader in PV inverter and energy storage system (ESS) solutions, has supplied 180 units of their SG350HX string inverters to a 70 MWp solar power plant in Simo, Lapland. The park will be one of the largest in Finland—marking it also as one of the world’s northernmost large-scale PV installations. The project, developed by Solarigo Systems Oy and supported by distributor PVO International, demonstrates the viability of large-scale PV even in Arctic conditions. It is already the second project Sungrow supports in Simo after a 60 MWh battery storage project earlier this year.
Located just 100 km below the Arctic Circle, the 95-hectare site will host approximately 120,000 solar panels. The project team will connect the solar plant to existing wind turbines, forming a hybrid power plant that supports Finland’s carbon neutrality goals.
Technology Built for the North
Solarigo selected the SG350HX inverters from Sungrow for their performance in cold, wet, and demanding environments. With IP66 and C5 anti-corrosion protection, smart air-cooling and weather-protected design, the inverters will maintain stable operation despite freezing temperatures, ice, and excess moisture. Installed directly under the PV module structures, the inverters will continue functioning even when their enclosures are frozen—ensuring minimal disruption and high reliability.
“Sungrow’s SG350HX inverter was a natural choice for this project. Its performance in previous installations has been strong, and the updated version offers even more flexibility and reliability. We value Sungrow’s technical support and long-term warranty terms, which are essential for projects in remote and demanding locations.”
– Jere Graf, Project Manager at Solarigo.
A Partnership for Clean Energy
The project is a collaboration between EPC Solarigo and PVO International, which supplied the solar panels and Sungrow’s inverters. Solarigo, Finland’s largest developer and operator of utility-scale solar PV parks, brings extensive experience in building PV infrastructure in northern conditions.
“As solar energy expands into new frontiers, we are proud to support our partners with technology that performs reliably—no matter the conditions. The powerful SG350HX and its flexible connection options make it well-suited for projects in challenging environments. This project is a great example of how innovation can drive the energy transition, even in remote parts of Europe.”
– Henry Särkisilta, Key Account Manager at Sungrow Finland.
Advanced Inverter Technology
The SG350HX is designed for utility-scale PV systems and is one of Sungrow’s most powerful and efficient string inverters. Its high power density and smart diagnostics lower installation and maintenance costs. The inverter features up to 16 maximum power point trackers (MPPTs) with a maximum efficiency of 99%, enabling high energy yields under variable conditions. It includes smart safety features such as a reactive power response time of less than 30 ms, stable operation also in extremely weak grids, and compliance with global grid codes.
Commitment to the Nordics
This project follows Sungrow’s recent deployment of a 60 MWh battery energy storage system in Simo together with the FRV AmpTank joint venture, further strengthening the company’s presence in the Nordic region.
As Finland moves toward a greener energy landscape, the PV and ESS projects in Simo showcase that intelligent energy solutions can create a cleaner and more resilient grid, aligned with Sungrow’s mission, Clean power for all.
