Solarpro Breaks Ground on 450 MW Solar Project in Hungary

Hungary is set to host its largest solar power project to date, as Solarpro moves ahead with the construction of a 450-megawatt photovoltaic plant in Heves county in the north of the country.

Solarpro said the facility will deploy nearly 700,000 solar modules supplied by Chinese manufacturer Longi, making it the biggest PV installation ever built in Hungary. Once operational, the plant is expected to generate around 470 gigawatt-hours of electricity annually—enough to power roughly 106,000 households.

The project is also expected to deliver significant environmental benefits, cutting carbon dioxide emissions by an estimated 415,000 metric tons per year by displacing fossil fuel generation from the power mix.

Solarpro selected Longi’s Hi-MO 9 modules, which use advanced back-contact solar cell technology. Unlike conventional designs, back-contact cells place electrical contacts on the rear of the panel, improving efficiency while reducing the risk of microcracks in silicon wafers. The design also supports more stable long-term performance in challenging conditions such as heat, dust, and variable cloud cover.

The Hungarian development builds on an existing partnership between Solarpro and Longi, following the completion of a 176-MW solar park in Romania in 2024. Solarpro said the new facility will become the largest back-contact solar installation in Europe.

The project comes as interest in back-contact technology accelerates across the continent. Last week, France-based startup Carbon announced plans to work with Longi to adopt the technology at a planned gigawatt-scale module factory in France, reflecting a broader push toward higher-efficiency solar solutions as Europe expands utility-scale renewables.

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