TaiyangNews PV System Technology Trends 2025 Conference - Live Blog

Welcome to the TaiyangNews Virtual Conference on PV System Technology Trends 2025! We're excited to have you join us as we dive into the newest product innovations showcased at this year’s top solar trade shows—SNEC in China and Intersolar Europe in Germany. Let’s explore the solar trends fresh from fairs!

Even with the solar market going through a bit of a rough patch globally, innovation hasn’t slowed down — and that was clear from what we saw at SNEC and Intersolar this year. Since there was way too much to cover in just one day, we have spread the sessions across June 24 and June 26. Here’s a quick look at what’s lined up for Day 1. We kick off at 9:30 AM CEST! 

TaiyangNews PV System Technology Trends 2025 day 1 begins. Stay tuned to this space, live blog, to catch all the latest insights, product launches, and expert takeaways from the world’s top solar trade shows — SNEC in China and Intersolar Europe.

Despite overcapacity, record-low prices, and a slowing market outlook, SNEC and The smarter E 2025 saw strong participation with packed halls, showing probably better than the actual situation, says TaiyangNews Managing Director Michael Schmela. Key trends TaiyangNews noticed at the shows this year were innovations to cut system costs, improved module efficiency, rising battery focus, hybrid systems, and increased digital integration.

In his analysis of the TOP SOLAR MODULES listing — launched in 2022 and updated in the H1 2025 report — TaiyangNews Head of Technology Shravan Chunduri highlights a clear trend: more manufacturers are turning to high-efficiency n-type cell architectures like IBC, HJT, and TOPCon, as PERC is discontinued by more and more players. Among these, while AIKO, with its ABC technology, is the leader for module efficiency — at 24.4% now, HJT remains the front-runner when it comes to module power, led currently by Huasun with 730 W.

LONGi’s Product Marketing Expert Charles Cheng walks us through how solar cell tech has evolved over the years — all focused on boosting efficiency. PERC took over from Al-BSF in 2017, TOPCon took the lead in 2022, and now, post-2024, BC tech is on top with a 1.6% efficiency gain. That’s why, he says, LONGi has chosen BC as its core platform.

LONGi is aiming high for the future of solar modules. Sharing the company's long-term power roadmap, Product Marketing Expert Charles Cheng said LONGi plans to hit an 800W+ power rating for its tandem modules by 2030, once the theoretical 29.4% efficiency limit of crystalline silicon is reached in 2027. With continued improvements, the goal is to push this to 900W+ by 2031.

JinkoSolar’s upgraded Tiger Neo 3.0 series, launched recently, features its HOT 4.0 platform and a 20-busbar (20BB) design, pushing efficiency up to 24.8% and power output to 670 W. The 20BB tech alone adds a 0.19% efficiency gain. With high bifaciality and excellent energy yield, it’s a strong fit for both ground-mounted stations and large-scale distributed solar projects, said JinkoSolar’s Product Manager, Shayne Li.

Aran from Tongwei’s Overseas Technical Support team shared that the company aims to achieve 26.5% cell efficiency with its upgraded TNC 2.0 technology. The enhancements include zero busbar (0BB), stencil printing, and TPE technology, which help recover power losses from cell cutting. While other cell architectures may offer higher theoretical efficiency, Aran stressed that Tongwei remains committed to the proven reliability of TOPCon for now.

Vitor Rodrigues, Technical Director for EU & LATAM at GCL System Integration, shared the company’s ESG-focused technology strategy, highlighting its FBR silicon process that uses 76% less power and 16% less water than the Siemens method. He added that GCL SI’s new TOPCon 2.0 and back contact modules, unveiled at SNEC 2025, will be commercially available from September 2025, with tandem modules set for mass production in H2 2026.

DMEGC Solar, with 23 GW cell and 21 GW module manufacturing capacity, boosted its module shipments by 73% to 17.2 GW in 2024, half of which were exported. Its Product Manager, Kinyang Zou, said the company supports all mainstream PV applications and is targeting higher module output beyond 620 W by the end of 2025, through innovations like poly-finger cells, high-density encapsulation, and enhanced sealing. The company's product lineup now includes ultra-black, hail-resistant, anti-glare, lightweight, installer-friendly (IFM), and agriPV modules with 3-50% light transmittance.

Germany’s Weidmüller promoted its compact, plug-and-play PV combiner box, PV Inline, at Intersolar Europe 2025. Designed for small rooftop solar systems, the box offers protection against external overvoltages. Already available in Europe, the product will soon be launched globally, said Jan Marrenbach, Weidmüller's Strategic Product Manager for Photovoltaics.

Nadine Wade, Product Manager at K2 Systems GmbH, said the company continues to rely on established building standards in the absence of universal regulations for PV mounting – especially as customer demand for certifications grows. On the product side, she highlighted how K2 is responding to industry trends like the increasing use of larger, thinner-framed modules with lower load tolerance. To meet these changes, K2 has launched new clamps and pre-assembled mounting systems built to handle higher loads. These upgrades, presented at Intersolar Europe 2025, are designed for flexibility and ease of use across various applications – from rooftops to wall-mounted PV and carports.

Volker Biemann, Managing Director Operations and Co-Founder of MBJ Solutions GmbH, presented his company’s newly launched MBJ Quickcheck at Intersolar Europe 2025. This tool is designed to capture electroluminescence (EL) images of active solar modules during daylight. The lightweight, 7kg portable device delivers results in under a minute per module, without the need to disconnect them. Real-time image viewing is possible via smartphone or optional VR headsets.

We’re excited to kick off Day 2 of the TaiyangNews Virtual Conference on PV System Technology Trends! Today’s agenda dives into the latest product innovations showcased at the world’s 2 leading solar exhibitions – Intersolar Europe / The smarter E and SNEC. With a compelling lineup of expert speakers and presentations starting at 9:30 AM CEST, watch this space for live updates and key takeaways as the event unfolds.

Make sure to stick around till the end of the conference today! TaiyangNews Head of Technology, Shravan Chunduri, will be diving into the latest solar product trends in an exciting panel discussion with Alex Barrows from Exawatt, Claudio Martins Godinho from AIKO, and Vitor Rodrigues from GCL. You can sign up for the event if you haven’t already – register now at this link.

Team TaiyangNews is online with Day 2 of the PV System Technology Trends Virtual Conference. The host and moderator of today’s session is TaiyangNews Head of Technology, Shravan Chunduri. Say hello!

Shravan Chunduri provides a quick recap of the highlights from day 1 on June 24, 2025. The opening day featured key innovations from LONGi, whose BC shipments hit 30 GW with 40 GW+ in orders. JinkoSolar showcased its 20-busbar TOPCon tech. Tongwei emphasized 0BB and edge passivation. GCL covered FBR silicon and tandem cells. DMEGC Solar shared its module power roadmap. Weidmüller’s compact SPD, K2’s adaptive mounting, and MBJ’s portable EL tester were also shared. 

Originally proposed by Purdue University in 1975, back contact (BC) cells are approaching the theoretical efficiency ceiling of 29.56% for monocrystalline silicon — significantly surpassing the limits of TOPCon and HJT technologies. AIKO’s Europe Service Director Claudio Martins Godinho says the company's ABC cells currently achieve an average mass production efficiency of 27.20%, and it has introduced the ABC Infinite module with a 25.2% efficiency rating.

Trinasolar has set new records with tandem modules, achieving certified efficiencies of 31.1% and 32.2%. Its perovskite-silicon modules surpassed 30% efficiency and 800 W power, reaching up to 841 W. Despite breakthroughs, stability and standardization remain key hurdles for industrial-scale deployment. An industry-wide collaboration for validation and testing standards is the need of the hour, says Senior Engineer, Perovskite R&D at Trinasolar, Dr. Rui Xia.

In a ‘provocative’ take, Christian Comes, Huasun Energy’s Head of Business Development Europe, suggests the world may be nearing the end of LCOE as the key solar metric. Electricity prices in the free market can be very low during peak generation of conventional PV plants in regions with high PV penetration, for instance, Germany, leading to curtailment and negative electricity prices. As the world moves towards corporate PPAs and auctions, he advocates a rethink in PV plant design, championing Huasun's Kunlun Vertical PV HJT modules, which he says already outperform traditional setups, especially when paired with battery storage.

DAS Solar’s N-Type Commitment
Leo Chang, DAS Solar’s Director of Global Technical Support, shared the latest on the company's n-type back contact 3rd generation technology, DBC 3.0. With this technology, the company aims to achieve 655 W power output in Q3 2025, and up to 670 W by Q1 2027 (66-cell), with 48-cell variants targeting a maximum of 490 W. Its DBC 3.0 back contact design delivers over 24% efficiency, with a sleek, grid-free, light-trapping all-black surface.

GoodWe is evolving beyond its inverter roots into a full-fledged smart energy solutions provider. At the forefront is its AI-driven home energy management system (HEMS) for residential and C&I applications. Technical Product Director Jonas Ding highlighted how open EMS and power trading can cut CapEx. He also revealed the sleek ET 100 hybrid inverter, hailing it as the quietest in its class, with 21 A per string, 200% PV oversizing, and intelligent temperature sensing. Its commercial debut is scheduled for Q4 2025.

Described by HyperStrong International’s EMEA Solution Manager, Mingxuan Li, as the most compact solution in its category, the HyperBlock M system delivers 3.2 MW / 12.8 MWh in an integrated AC/DC package. Designed for 4-8 hour applications, HyperBlock M occupies just 1,687 m² in a standard 50 MW / 200 MWh setup, significantly reducing land use and upfront investment. This, he said, makes it an ideal choice for space-constrained utility projects seeking efficient, scalable storage.

CRU/Exawatt’s Head of PV Alex Barrows, AIKO’s Europe Service Director Claudio Martins Godinho, and GCL System Integration’s Technical Director for EU & LATAM Vitor Rodrigues are unanimous in their opinion that back contact will continue to gain momentum in the future among other cell technologies, even though TOPCon remains the market’s anchor through 2027. Speaking in the panel discussion with TaiyangNews Head of Technology Shravan Chunduri, they see 182 x 210 mm format becoming the standard size for the industry even as innovation continues at a relentless pace.