LONGi Solar powers Norway’s largest rooftop solar project with its Hi-MO X10 back contact module series at the Ahlsell Norge warehouse

LONGi Solar has delivered its high-efficiency Hi-MO X10 modules featuring HPBC 2.0 back contact technology for Norway’s largest rooftop solar installation to date at the Ahlsell Norge AS warehouse. The 7.6 MWp system, covering approximately 30,000 square meters of rooftop area, was connected to the grid in October 2025. Developed and constructed by Solcellespesialisten AS, Norway’s leading EPC company and a long-standing partner of LONGi, the project comprises around 12,000 LONGi Hi-MO X10 modules, producing an estimated 6.8 GWh of clean electricity annually, equivalent to the annual electricity consumption of around 375 Norwegian households and reducing approximately 3,000 tonnes of CO₂ emissions each year.

“This project reflects the strength of our long-standing partnership with Solcellespesialisten and our shared commitment to advancing solar in Norway,” said Will Han, General Manager at LONGi Solar Nordics. “By deploying our Hi-MO X10 back contact modules at Ahlsell Norge’s new logistics center, we demonstrate how high-efficiency technology and reliable local collaboration can deliver measurable CO₂ reductions and set a new benchmark for commercial rooftop applications in the region.”

Hamid Hauge-Allahdadi, Chief Commercial Officer at Solcellespesialisten AS, said: “This installation is the result of many years of close cooperation and mutual trust with LONGi. We’ve worked together on numerous installations across Norway, and the partnership has always been defined by technical reliability and shared ambition. Using the new Hi-MO X10 modules at Ahlsell’s warehouse shows how far solar has come here: combining advanced back contact technology with solid local expertise to deliver a system that performs exceptionally well under Nordic conditions.”  

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New Ahlsell Norge logistics hub in Eidsvoll sets a benchmark for automation and sustainability

The Ahlsell Norge AS warehouse in Deli Forest, Eidsvoll, was completed in 2025 and is regarded as one of Norway’s largest and most advanced logistics properties. The facility covers 64,000 square meters and sets a new benchmark for large, centralized logistics operations in Norway. It lies north of Gardermoen and combines state-of-the-art automation with high-tech infrastructure, including a 36-meter-high automated warehouse and a large rooftop solar installation.

The solar system is expected to generate more electricity on an annual basis than the facility consumes. Around 60 to 70 percent of the total production will be exported to the grid.

“At Ahlsell, we aim to lead our industry in sustainable development,” said Jonas Ebbestad, Property and Administration Manager at Ahlsell Norge AS. “With LONGi’s Hi-MO X10 back contact modules powering the rooftop installation, our warehouse now benefits from higher energy yields, stable electricity costs, and reliable clean power generation throughout the year. The system supports both our operational efficiency and our long-term electrification goals.”

Back contact technology delivers higher energy yields for Nordic rooftop conditions

The Hi-MO X10 series represents LONGi’s most advanced back contact technology for commercial rooftop applications. Each module delivers up to 670 W of power at a module efficiency of 24.8% and cell efficiency of 26.6%. The technology is based on LONGi’s HPBC 2.0 (Hybrid Passivated Back Contact) platform, which integrates a zero-busbar design, TaiRay n-type wafer, and multi-layer passivation structure to improve light absorption and reliability. The Hi-MO X10 also offers a low first-year degradation of about 1%, an annual linear degradation rate of just 0.35%, and an improved temperature coefficient of -0.26%/°C. Combined, these features enable higher energy yield and stronger durability in demanding environments. Enhanced mechanical strength, including a 16% increase in wafer break resistance, and significantly lower shading and hotspot losses make the Hi-MO X10 well suited for commercial rooftops in Nordic climates, where varying light conditions and heavy snow and wind loads demand high durability.

The Hi-MO X10 series is supported by LONGi's supply-chain transparency program, which ensures end-to-end traceability and ESG verification across the entire value chain. Among several third-party certifications, the series holds TÜV Rheinland's AA-rated certification for full-chain traceability and is manufactured under ISO 20400-certified sustainable procurement standards. Together, these credentials provide EPCs and investors in Norway and across Europe with verified assurance of responsible sourcing and lifecycle integrity.

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Rooftop solar accelerates growth in Norway’s PV market beyond 750 MW

Norway’s solar industry is entering a new phase of expansion. After adding nearly 150 MW of new capacity in 2024, total installations have now surpassed 750 MW nationwide in 2025, with commercial and industrial rooftops driving much of the growth. Studies published in 2024 estimate that Norway’s rooftops could technically host up to 31 GW, representing a potential generation of around 30 TWh per year. The government aims to reach 8 TWh of solar electricity by 2030, with rooftop systems expected to contribute a significant share.  

Against this backdrop, the Ahlsell installation demonstrates how large-scale rooftops can support national renewable targets while reducing emissions and strengthening energy resilience. Pareto Alternative Investments acted as the project investor, while the system integrates Solis inverters and Van der Valk mounting structures to ensure long-term reliability and structural stability. The installation represents another step forward for Norway’s expanding solar market and reinforces LONGi’s commitment to advancing high-efficiency, sustainable energy solutions across the Nordic region.

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