{"id":6726,"date":"2026-04-05T15:13:27","date_gmt":"2026-04-05T15:13:27","guid":{"rendered":"https:\/\/couleenergy.com\/?p=6726"},"modified":"2026-04-05T15:13:31","modified_gmt":"2026-04-05T15:13:31","slug":"%d1%81%d0%be%d0%bb%d0%bd%d0%b5%d1%87%d0%bd%d1%8b%d0%b5-%d0%bf%d0%b0%d0%bd%d0%b5%d0%bb%d0%b8-%d1%81-%d0%b7%d0%b0%d0%b4%d0%bd%d0%b8%d0%bc-%d0%ba%d0%be%d0%bd%d1%82%d0%b0%d0%ba%d1%82%d0%be%d0%bc-%d1%81","status":"publish","type":"post","link":"https:\/\/couleenergy.com\/ru\/back-contact-solar-panels-are-booming-and-tailor-made-solutions-are-leading-the-way\/","title":{"rendered":"\u0421\u043e\u043b\u043d\u0435\u0447\u043d\u044b\u0435 \u043f\u0430\u043d\u0435\u043b\u0438 \u0441 \u0437\u0430\u0434\u043d\u0438\u043c \u043a\u043e\u043d\u0442\u0430\u043a\u0442\u043e\u043c \u043f\u0435\u0440\u0435\u0436\u0438\u0432\u0430\u044e\u0442 \u0431\u0443\u043c, \u0438 \u0432 \u044d\u0442\u043e\u043c \u043d\u0430\u043f\u0440\u0430\u0432\u043b\u0435\u043d\u0438\u0438 \u043b\u0438\u0434\u0438\u0440\u0443\u044e\u0442 \u0441\u043f\u0435\u0446\u0438\u0430\u043b\u0438\u0437\u0438\u0440\u043e\u0432\u0430\u043d\u043d\u044b\u0435 \u0440\u0435\u0448\u0435\u043d\u0438\u044f."},"content":{"rendered":"\n

Back-contact (BC) solar panels are becoming the default choice for high-performance solar across European and North American markets \u2014 from commercial facades and marine decks to RV rooftops and off-grid applications. Switzerland crossed\u00a050% BC market share in 2025<\/strong>[1]. EU mandatory solar deadlines begin\u00a0end of 2026<\/strong>. Major cell manufacturers are racing toward 1 TW of BC capacity by 2030. For distributors, integrators, and OEM brands on both sides of the Atlantic, the question has shifted: not whether to source BC, but\u00a0which manufacturing partner can build exactly what your application requires.<\/strong><\/p>\n\n\n\n

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\u2600\ufe0f Back-Contact Technology: What Buyers Need to Know<\/h2>\n\n\n\n

Traditional solar panels have metal gridlines running across the front surface. They collect current \u2014 but they block incoming light. That shading loss is baked into every front-contact design, from PERC to TOPCon. Back-contact technology eliminates it. All electrical contacts are relocated to the rear of the cell. The entire front surface captures light without interruption \u2014 and the absence of front gridlines produces a uniform all-black surface that BIPV specifications and premium applications require.<\/p>\n\n\n\n

Four BC cell architectures are now commercially active:<\/p>\n\n\n\n

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  • IBC (Interdigitated Back Contact)<\/strong>\u00a0\u2014 developed at Stanford University in the 1970s; commercialised by SunPower, now manufactured by Maxeon.<\/li>\n\n\n\n
  • HPBC (High-Performance Back Contact)<\/strong>\u00a0\u2014 LONGi’s variant at 50 GW annual capacity; integrates shade management directly into the cell architecture.<\/li>\n\n\n\n
  • ABC (All Back Contact)<\/strong>\u00a0\u2014 Aiko Solar’s design; current commercial efficiency leader at 25.0% module efficiency.<\/li>\n\n\n\n
  • HBC (Hybrid Back Contact)<\/strong>\u00a0\u2014 next-generation architecture combining BC structure with HJT passivation and TOPCon tunneling layers. GS-Solar reached 27.62% in lab conditions (November 2024).<\/li>\n<\/ul>\n\n\n\n

    BC vs Front-Contact Technologies: Key Performance Metrics<\/h3>\n\n\n\n
    Technology<\/th>Front Gridlines<\/th>Best Commercial Module Efficiency<\/th>Temperature Coefficient<\/th>Annual Degradation<\/th>Market Status (2026)<\/th><\/tr><\/thead>
    PERC<\/td>Yes<\/td>~21%<\/td>\u22120.35 to \u22120.40%\/\u00b0C<\/td>0.5\u20130.7%<\/td>Declining<\/td><\/tr>
    TOPCon<\/td>Yes<\/td>~23%<\/td>~\u22120.30%\/\u00b0C<\/td>~0.45%<\/td>Current peak<\/td><\/tr>
    HPBC (LONGi)<\/td>None<\/td>24.8%<\/td>\u22120.26%\/\u00b0C<\/td>\u22640.35%<\/td>Scaling fast<\/td><\/tr>
    ABC (Aiko)<\/td>None<\/td>25.0%<\/td>~\u22120.24%\/\u00b0C<\/td>\u22640.35%<\/td>Growing rapidly<\/td><\/tr>
    HBC (Hybrid, lab)<\/td>None<\/td>27.62%<\/td>TBC<\/td>TBC<\/td>Commercialising<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

    Sources: LONGi official press releases; Clean Energy Reviews (Feb 2026); PV Magazine; Fraunhofer ISE certification (Oct 2024); TCL Solar product data.<\/p>\n\n\n\n

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    \ud83d\udcc8 Four Market Forces Accelerating BC Adoption<\/h2>\n\n\n\n

    1. Efficiency Margins Are Pulling Away from TOPCon<\/h3>\n\n\n\n

    Aiko Solar’s ABC modules achieve up to\u00a025.0% efficiency<\/strong>\u00a0in mass production. LONGi holds the crystalline silicon module world record at\u00a025.4%<\/strong>[2], certified by Fraunhofer ISE in October 2024 under laboratory conditions; commercially shipped HPBC 2.0 modules deliver up to\u00a024.8%<\/strong>. Standard TOPCon sits around 22\u201323%. The gap is widening. By 2028\u20132030, BC modules in commercial production are projected to exceed 26%.<\/p>\n\n\n\n

    2. The World’s Largest Cell Maker Has Committed to BC<\/h3>\n\n\n\n

    In March 2026,\u00a0Tongwei<\/strong>\u00a0\u2014 nine consecutive years as global cell shipment leader per InfoLink Consulting[3]\u00a0\u2014 signed a mass-production partnership for hybrid HBC cells with GS-Solar and Golden Solar. LONGi has targeted 50 GW of HPBC 2.0 annual capacity. JA Solar is executing a 4 GW HBC upgrade. ISC Konstanz co-founder Radovan Kopecek projects global BC manufacturing capacity could reach\u00a01 terawatt by 2030<\/strong>[4], with most critical BC patents expiring in 2028.<\/p>\n\n\n\n

    3. Price Parity Has Effectively Arrived in Europe<\/h3>\n\n\n\n

    European BC module pricing reached near-parity with bifacial and monofacial TOPCon in early 2026. The performance premium no longer carries a cost premium. The Swiss market demonstrates the consequence: BC moved from near-zero to over 50% share in two years. In a market where module cost represents less than 10% of total installed project cost, buying comparable rates for materially better output per square metre is straightforward economics.<\/p>\n\n\n\n

    4. Binding Regulation Is Creating Mandatory Demand<\/h3>\n\n\n\n
    Deadline<\/th>EPBD Requirement<\/th><\/tr><\/thead>
    May 2026<\/strong><\/td>All EU member states must transpose EPBD into national law<\/td><\/tr>
    End of 2026<\/strong><\/td>New public and non-residential buildings >250 m\u00b2 must have solar<\/td><\/tr>
    January 2027<\/strong><\/td>All new non-residential buildings must install solar<\/td><\/tr>
    January 2028<\/strong><\/td>Existing non-residential buildings >500 m\u00b2 must install solar during major renovation<\/td><\/tr>
    January 2029<\/strong><\/td>Existing public buildings >750 m\u00b2 must install solar<\/td><\/tr>
    January 2030<\/strong><\/td>All new residential buildings must have solar; existing public buildings >250 m\u00b2 must install<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

    Source: European Commission \u2014 energy.ec.europa.eu (EPBD Solar Energy in Buildings, official timeline).[5]<\/p>\n\n\n\n

    When installation is mandatory and roof space is constrained, the buyer question shifts from “should I install solar?” to “which panel delivers the most from my limited footprint?” BC wins that question on every technical metric. For North American markets, UFLPA compliance requirements and the growing state-level solar mandate landscape create parallel structural demand \u2014 particularly for commercial and industrial building owners.<\/p>\n\n\n\n

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    \ud83d\udd2e BC Adoption Timeline: 2026\u20132030<\/h2>\n\n\n\n

    Switzerland demonstrated how quickly the shift can happen: near-zero to over 50% BC market share in two years. The UK residential segment is following the same pattern. EPBD mandates will drive the same adoption curve across all 27 EU member states \u2014 with mandatory commercial solar requirements starting before the end of 2026.<\/p>\n\n\n\n

    Bifacial BC modules are projected to dominate the global solar market from 2029\/2030, with bifaciality reaching 80%+. Key BC-related patents expire in 2028, further opening competitive manufacturing. Leading analysts, including ISC Konstanz’s Kopecek, project that at full scale BC could eventually achieve an LCOE below one US cent per kWh \u2014 a long-term analytical target, not a current commercial figure, but one that signals the technology’s structural cost trajectory.<\/p>\n\n\n\n

    For sourcing teams: the window to establish custom OEM relationships at favourable terms is narrowing. Specialist flexible and custom BC capacity is more constrained than standard rigid module capacity. Partners building product lines around BC now are positioning ahead of EPBD-driven demand spikes.<\/p>\n\n\n\n

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