Middle of its segment, weak in heat
The Haitai Solar N series G12R bifacial double-glass module utilizes n-type TOPCon technology in a G12R (rectangular cell) format, designed to genuinely increase energy yield without complicating the installation project. The bifacial design allows for the utilization of reflected light from the ground - this works particularly well on bright, flat roofs, ground-mounted structures, and PV farms with appropriate albedo.
The use of glass-glass improves moisture and micro-cracking resistance, leading to more stable performance over a longer period and better resistance to harsh environmental conditions. Thanks to n-type TOPCon cells, the modules are better equipped to handle high temperatures and offer lower degradation over time, reducing the risk of decreased production in subsequent years.
This is a sensible choice for investors who prioritize LCOE and want higher yields on the same area - from commercial and industrial installations to large ground-mounted power plants, including those with trackers.
Ranking
Signals from the data
Commercial.
Hot climates.
Bottom 20% of the TOPCon 450-500 W segment, against a median of -0.290.
The module's peak efficiency of 22.77% places the series just behind the leading direct peer comparables — Sunlike Solar (22.8%) and IBC Solar (22.8%) — while clearly outperforming the Waaree ARKA Series (20.93%). The gap relative to the top two is only 0.03 percentage points, which in practice translates to comparable energy yield per unit area.
N-type TOPCon technology eliminates the LID (Light-Induced Degradation) effect characteristic of p-type PERC cells and exhibits a lower temperature coefficient (typically ~-0.30%/°C vs. ~-0.35%/°C for PERC), resulting in higher annual energy yield in hot climates and slower long-term degradation.
The series carries a 30-year linear power output warranty — a timeframe consistent with top-tier competitors in the bifacial TOPCon segment. This minimizes the risk of production losses in later years of operation and reduces LCOE for projects with extended financing periods.
The glass-glass construction with bifacial irradiance capture enables additional energy gain from ground albedo (typically +5–15% for ground-mounted systems with suitable surface reflectivity). The glass-glass laminate also provides superior moisture barrier performance, greater resistance to microcracks, and longer-term electrical stability compared to standard backsheet modules.
Haitai Solar achieved BloombergNEF Tier 1 status in Q2 2025 under BNEF's tightened methodology, which requires a minimum 10 MW per project and six qualifying projects per quarter. Bankable status streamlines access to project financing and insurer acceptance in large-scale commercial and utility-scale installations.
At a 12-year product warranty, the series falls short of select premium competitors: JA Solar Deep Blue 4.0 Pro offers 25 years, and the Jinko Tiger Neo (54-cell format) provides 15 years of product warranty. For projects with long financing horizons or public tenders requiring a minimum 15-year product warranty, this may represent a formal disqualifying criterion.
With BNEF Tier 1 status granted in Q2 2025, Haitai Solar has approximately one year of history as a bankable manufacturer under BNEF's revised, more stringent methodology. Compared to established leaders — LONGi, JA Solar, and Canadian Solar, all present in the rankings for over a decade — this shorter track record may be perceived as a risk factor by institutions financing large project portfolios.
- Efficiency of 22.5% matches the TOPCon 450-500W median
- At 225.2 W/m² power density, roof space requirements are typical for TOPCon 450-500W panels
- Temperature coefficient of -0.30%/°C matches the TOPCon 450-500W median
- #4108 for efficiency, #6093 for temperature performance out of 14005 panels
Specifications
Datasheet charts
Measured curves published by Haitai Solar in this model's datasheet. A chart carrying a wattage was measured on that variant alone - only the ones that describe 450 Wp appear here. The rest cover the whole series.
Simulations
Degradation from this panel's own datasheet figures. No inverter, soiling or shading losses.
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