EU PVSEC 2026 preview: Vienna, September 7–11 — the world's biggest solar science conference
EU PVSEC 2026 (European Photovoltaic Solar Energy Conference and Exhibition) runs September 7–11 at Messe Wien, Austria — the world's largest solar science + technology conference. Expecting 3,500+ researchers and 200+ exhibitors. 2026 threads: perovskite tandem commercialization, 30%+ efficiency module designs, recyclable module breakthroughs, and the Fraunhofer ISE roadmap. This guide previews what to watch.
In 50 words: EU PVSEC 2026 (European Photovoltaic Solar Energy Conference and Exhibition) runs September 7–11 at Messe Wien, Austria — the world's largest solar science + technology conference. Expecting 3,500+ researchers and 200+ exhibitors. 2026 threads: perovskite tandem commercialization, 30%+ efficiency module designs, recyclable module breakthroughs, and the Fraunhofer ISE roadmap. This guide previews what to watch.
EU PVSEC is the world's pre-eminent solar science conference — where the next generation of solar technology gets benchmarked, debated, and de-risked before commercial scaling. It's research-heavy compared to Intersolar Europe or Solar & Storage Live UK, but the technology pipeline coming out of EU PVSEC eventually shapes commercial product roadmaps 3-5 years later. This guide previews the 2026 Vienna edition.
The event
EU PVSEC 2026 runs September 7–11, 2026 at Messe Wien, Vienna, Austria.
- 3,500+ researchers, academics, and industry technologists expected
- 200+ exhibitors (smaller commercial component than Intersolar; more R&D focused)
- 1,000+ peer-reviewed papers presented
- Industry plenary lectures from Fraunhofer ISE, ISFH, IMEC, NREL, CSEM, others
- Strong cell + module + materials science focus
Four threads to watch
1. Perovskite tandem commercialization
Perovskite-on-silicon tandem cells (combining a perovskite top layer with silicon underneath) are the next-generation solar technology, with lab efficiency past 34% — above the 26%+ single-junction silicon ceiling. EU PVSEC 2026 will feature first commercial perovskite tandem module results from Oxford PV, Qcells, LONGi, and Trina, plus stability/lifetime data from accelerated weathering tests. Definitive talks expected on the 5-10 year commercial scaling timeline. For glossary, see perovskite tandem.
2. 30%+ efficiency module designs
Beyond perovskite tandem, multiple paths to 30%+ module efficiency are being researched:
- Triple-junction cells (perovskite + perovskite + silicon)
- Bifacial perovskite tandem with rear-side optimization
- Back-contact heterojunction (POPCon, IBC variants)
- III-V on silicon (very high cost but possible for niches)
EU PVSEC 2026 will host the latest lab efficiency record announcements and engineering pathway discussions.
3. Recyclable solar modules
EU WEEE Directive enforcement is tightening end-of-life solar module recycling requirements. EU PVSEC 2026 will feature dedicated sessions on:
- Glass-glass module recyclability vs glass-foil
- Lead-free interconnect technology (replacing tin-lead solder)
- Cell-level recyclability and silver recovery
- Adhesive vs lamination tradeoffs for end-of-life disassembly
For broader EU context, see solar repowering Europe 2026.
4. Fraunhofer ISE annual roadmap
Fraunhofer ISE (Germany) publishes the most-cited annual roadmap for solar PV technology trends. The 2026 update — typically launched at EU PVSEC — covers:
- Cell technology market share projections (TOPCon → HJT → tandem)
- Module wattage progression
- Efficiency record trajectories
- Cost reduction pathway
The Fraunhofer ISE roadmap is the canonical reference for any serious solar PV technology forecast.
Who attends
| Category | Notable participants | |---|---| | Research institutes | Fraunhofer ISE, ISFH, IMEC, CEA-INES, NREL, JRC, AIST, KOPTI | | Universities | TU Delft, Loughborough, RWTH Aachen, Stanford, Lausanne (EPFL), Tsinghua, IIT Bombay | | Major module manufacturers | Qcells, LONGi, Trina, JA, Canadian Solar, REC, Meyer Burger, Oxford PV | | Equipment OEMs | Meyer Burger Technology, von Ardenne, Centrotherm, Singulus | | Materials suppliers | Wacker (polysilicon), DuPont (encapsulants), Heraeus (silver paste), 3M | | Industry analysts | BloombergNEF, Wood Mackenzie, IHS Markit, SolarPower Europe |
How EU PVSEC differs from Intersolar Europe
| Show | Focus | |---|---| | Intersolar Europe (Munich, June) | Commercial solar products + installer/EPC ecosystem | | EU PVSEC (Vienna/varying, September) | Solar research + technology + cell-level science |
If you're commercial side of the solar industry, Intersolar Europe is more useful. If you're R&D, manufacturing engineering, materials supply, or strategic technology forecasting, EU PVSEC is more important. Most major module manufacturers send technology teams to both.
Practical notes for attendees
- Location: Messe Wien, Vienna (15 min from city center via metro)
- Registration: paid (typical academic conference structure); papers/posters by submission
- Best for: R&D, technology strategy, materials supply
- Less ideal for: B2C installers, residential market players, distribution partners
- Bonus: Vienna is one of the most attendance-friendly European conference cities — direct flights from most major hubs
For other upcoming EU events, see Enlit Europe 2026 preview, Solar & Storage Live UK 2026 preview, Hydrogen Technology Expo Europe 2026 preview, plus our exhibitions calendar.
Researched and drafted with AI assistance; reviewed and edited by Pruthvi A.. Browse more solar coverage. Standards: editorial, AI disclosure.