SINTEF study assesses Arctic solar power potential in Longyearbyen, Svalbard
A SINTEF study assessed Arctic solar power in Longyearbyen, Svalbard, finding a 19.28% peak PV capacity factor and 24 GWh of annual rooftop potential.
Photo by Nothing Ahead on Pexels
Arctic solar power can match mid-latitude summer output, according to a study from Norway’s SINTEF that assessed the role of photovoltaics in Longyearbyen, one of the world’s northernmost permanently inhabited settlements. The work, reported by trade outlet pv magazine on 22 June 2026, found a peak PV capacity factor of 19.28% in the Svalbard town, close to mainland Trondheim and only slightly below Munich. The researchers concluded that solar should be built as part of an integrated system with wind power and storage, not on its own.
Longyearbyen is the administrative centre of Norway’s Svalbard archipelago. It runs on fossil fuel-based power and sits in an environment that works against solar panels for much of the year: low temperatures, snow accumulation and icing, snow drifting, permafrost ground conditions, and extreme seasonal swings in sunlight that include a polar night with no solar generation at all. The SINTEF team set out to measure what PV can still contribute there.
How Arctic solar power compares with mainland sites
The researchers ran a comparative analysis of solar resource and PV performance in three places: Longyearbyen, Trondheim on the Norwegian mainland, and Munich in Germany, using PV simulation tools and open-access climate datasets. Longyearbyen reached a peak solar irradiance of 6.25 kWh/m2/day and a peak PV capacity factor of 19.28%. That capacity factor is comparable to Trondheim’s summer peak of 19.32% and close to Munich’s 21.13% over the same period.
| Location | Peak PV capacity factor | Context |
|---|---|---|
| Munich, Germany | 21.13% | Mid-latitude reference, same summer period |
| Trondheim, Norway | 19.32% | Mainland Norway, summer peak |
| Longyearbyen, Svalbard | 19.28% | Arctic; peak irradiance 6.25 kWh/m2/day |
Peak PV capacity factors as reported by pv magazine from the SINTEF study (22 June 2026). Arctic summer output is close to mid-latitude sites.
Corresponding author Berhane Darsene Dimd told pv magazine that the result holds despite the polar winter. “Longyearbyen, despite its extreme Arctic conditions and complete absence of PV generation during the polar night in the winter, still shows strong PV performance during late spring and summer,” he stated, attributing the summer strength to the albedo effect from snow and the long daylight hours that offset the low angle of the sun.
Rooftop potential and the capacity a renewable Longyearbyen would need
The study estimated that Longyearbyen has about 188,000 m2 of suitable rooftop area for PV, with the potential to generate around 24 GWh of electricity a year. Published energy transition scenarios reviewed by the team suggest a fully renewable system for the town would need between 3 MW and 7.5 MW of PV when combined with other renewable technologies, while an isolated, PV-reliant system could need as much as 119 MW. Two existing installations show the technology already works in the conditions: the Elvesletta Syd building-integrated PV systems, rated at 13.77 to 14.04 kW, reached a specific yield of 621 kWh/kW, and a 137 kW array at Svalbard Airport recorded 500 kWh/kW.
| Metric | Value | Detail |
|---|---|---|
| Peak solar irradiance | 6.25 kWh/m2/day | Longyearbyen |
| Peak PV capacity factor | 19.28% | vs Trondheim 19.32%, Munich 21.13% |
| Suitable rooftop area | ~188,000 m2 | Longyearbyen buildings |
| Annual rooftop generation potential | ~24 GWh | From available rooftops |
| PV for a fully renewable system | 3-7.5 MW | Integrated with other renewables |
| PV for an isolated renewable system | up to 119 MW | PV-reliant, no integration |
| Elvesletta Syd BIPV | 13.77-14.04 kW | Specific yield 621 kWh/kW |
| Svalbard Airport array | 137 kW | Specific yield 500 kWh/kW |
Longyearbyen solar resource and deployment figures as reported by pv magazine from the SINTEF study (22 June 2026).
Design choices matter in the Arctic, Dimd noted. Among the fixed configurations tested, south-facing panels at a 45-degree tilt performed best, and single-axis tracking could raise the capacity factor further. He cautioned that the best technical option is not always the best economic one, because Arctic systems face higher costs, mechanical stress, snow accumulation, and maintenance demands.
Why Arctic solar power needs wind and storage
The core conclusion is about system design. Because PV produces nothing through the polar night, the study found strong seasonal complementarity between solar and wind: PV is concentrated in the bright spring and summer, while wind resources are generally more abundant in the dark winter. “This indicates that PV should not be evaluated as a stand-alone solution in Longyearbyen, but rather as part of an integrated renewable energy system combining wind power with both short-term and seasonal energy storage,” Dimd stated. The point connects to a wider debate Winss Solutions has examined over whether renewable energy is unreliable due to intermittency, where pairing complementary sources with storage is the usual answer.
For an isolated settlement, that integrated approach mirrors the logic of microgrids that deliver reliable, localized energy in places the main grid cannot reach. Dimd said the next step is to move from simulation to detailed techno-economic and operational modelling of PV, wind, storage, heating demand, and grid constraints, with real-world validation of snow losses, bifacial gains, and cost-reliability trade-offs. The findings were published in “The role of photovoltaic energy in Arctic energy system transition: Technical potential and challenges in Longyearbyen, Svalbard,” in the journal Renewable Energy.
About SINTEF
SINTEF, the Foundation for Industrial and Technical Research, is an independent, non-profit research organisation founded in 1950 and based in Trondheim, Norway. It has grown through its own expansion and mergers into one of Europe’s largest independent research institutes, with around 2,000 employees and a close partnership with the Norwegian University of Science and Technology (NTNU) that dates back to its founding. Its work spans technology, the natural sciences, medicine, and the social sciences, and it carries out contract research for industry and the public sector. Its Arctic PV assessment adds settlement-level evidence to a broader shift Winss Solutions tracks in the future of green energy and its trends and predictions, pointing to solar as one part of a wind-and-storage system for the high Arctic rather than a standalone fix.
Sources: pv magazine; Renewable Energy (Elsevier)
Featured image: photo by Nothing Ahead on Pexels (free Pexels license).
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I specialize in sustainability education, curriculum co-creation, and early-stage project strategy. At WINSS, I craft articles on sustainability, transformative AI, and related topics. When I’m not writing, you’ll find me chasing the perfect sushi roll, exploring cities around the globe, or unwinding with my dog Puffy — the world’s most loyal sidekick.
