--- title: "Haitai Solar CETC-325T(GDF)/60 325W Solar Panel - Specs & Review | ComparePV" description: "Haitai Solar CETC-325T(GDF)/60 325W solar panel. Specs: 19.90% efficiency, Monocrystalline cells, dimensions, warranty and temperature coefficient." source: "https://comparepv.com/panel/haitai-solar-cetc-325t-gdf-60" updated: 2026-09-11 --- # Haitai Solar CETC-325T(GDF)/60 Efficiency leader, no clear weak spot 39 panels in the segment TOPCon 300-350 W ## Identity - **Manufacturer:** Haitai Solar - **Model:** CETC-325T(GDF)/60 - **Series:** N series G12 bifacial double-glass module - **Rated power:** 325 W - **Cell technology:** TOPCon - **Bifacial:** yes ## How it compares Compared against segment TOPCon 300-350 W (39 panels). | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Power (Wp) | 325 W | 320 W | Typical | | | Module efficiency | 19.90% | 15.01% | Strong - top 4% | 12,331 | | Power density | 200.2 | 150.1 | Strong - top 4% | 12,194 | | Temperature coefficient | -0.310 | -0.300 | Typical | 8,005 | | Weight (kg) | 20.0 kg | 27.0 kg | Strong - top 12% | | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Full peer table | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Module efficiency | 19.90% | 15.01% | Strong - top 4% | 12,331 | | Power density | 200.2 | 150.1 | Strong - top 4% | 12,194 | | Temperature coefficient | -0.310 | -0.300 | Typical | 8,005 | | Weight per kWp | 61.5 | 82.1 | Strong - top 12% | 12,656 | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Strengths - **19.90% module efficiency** - Top 4% of the TOPCon 300-350 W segment, against a median of 15.01%. Ranked 12,331st in the whole database. - **200.2 watts per square metre** - Top 4% of the TOPCon 300-350 W segment, against a median of 150.1. Ranked 12,194th in the whole database. - **61.5 kg per kWp** - Top 12% of the TOPCon 300-350 W segment, against a median of 82.1. - **Best for:** Commercial. ## Specification ### Electrical - **Rated power (Pmax):** 325 W - **Efficiency:** 19.90 % - **Voltage at Pmax (Vmp):** 37.36 V - **Current at Pmax (Imp):** 8.70 A - **Open-circuit voltage (Voc):** 44.16 V - **Short-circuit current (Isc):** 9.10 A - **Max system voltage:** 1500 V ### Temperature - **Temperature coefficient of Pmax:** -0.310 %/degC - **Temperature coefficient of Voc:** -0.260 %/degC - **Temperature coefficient of Isc:** 0.046 %/degC - **NOCT:** 42 degC ### Cell and construction - **Cell type:** Monocrystalline - **Cell technology:** TOPCon - **Cell count:** 60 - **Bifacial:** yes ### Physical - **Length:** 1640 mm - **Width:** 990 mm - **Thickness:** 30 mm - **Weight:** 20.0 kg - **Area:** 1.62 m2 - **Power density:** 200.2 Wp/m2 ### Warranty and degradation - **Product warranty:** 12 years - **Performance warranty:** 30 years - **Output guaranteed at end of warranty:** 87.4 % - **First-year degradation:** 1.00 % - **Annual degradation:** 0.40 % - **Output after 30 years:** 284 W ## Rank in the whole catalogue | Measure | Position | | --- | --- | | Efficiency | 12331 of 14005 | | Power density | 12194 of 14005 | | Temperature coefficient | 8005 of 14005 | | Weight | 12656 of 14005 | | Warranty | 21 of 14005 | ## Pros - **N-type TOPCon Technology – Zero LID** - N-type TOPCon cells exhibit no Light-Induced Degradation (LID), with an annual power degradation rate of ≤0.4% (vs. ≤0.55% for typical PERC modules). The temperature coefficient of Pmax at approximately -0.30%/°C improves summer energy yield compared to PERC technology (-0.35%/°C), translating into a measurably higher annual energy yield in Central European climates. - **Bifacial Design + Double Glass** - The glass-glass construction increases rear-side light transmission to ~94% vs. ~89% for backsheet foil, maximizing bifacial energy gain. Under high-albedo conditions (concrete, gravel, snow), the bifacial energy gain typically reaches 10–30%, effectively pushing system-level power output above the rated front-side power and placing this series clearly ahead of monofacial peers such as the Heckert Solar NEMO 2.0 60M BLACK (325 W, monofacial). - **30-Year Linear Power Warranty** - The manufacturer guarantees ≥87.4% of nominal power after 30 years of operation (linear degradation ≤0.4%/year). The industry standard for many PERC modules and older series is 25 years with a floor of ~84.8%, meaning the Haitai N Series G12 provides a full 5 additional years of warranty coverage — a significant advantage for long-term financed projects. - **BNEF Tier 1 – Bankability Confirmed** - Haitai Solar achieved BNEF Tier 1 status in Q2 2025 under BloombergNEF's tightened criteria (minimum 6 projects ≥10 MW financed by independent commercial banks within 24 months). Tier 1 status confirms the manufacturer's bankability and substantially simplifies project financing for commercial installations and utility-scale PV plants. - **Multi-Busbar – Resistance to Microcracks** - Multi-busbar (MBB) technology shortens the current path within each cell, reducing resistive losses and alleviating the mechanical stresses responsible for micro-cracks. Combined with the rigid glass-glass frame, this delivers significantly higher mechanical durability than modules built with standard backsheet foil. ## Cons - **Front-Side Efficiency Below Peers in Lower-Wattage Variants** - The lowest-wattage variant in the series (310 W, 18.97% front-side efficiency) falls 0.43 percentage points below the Heckert Solar NEMO 2.0 60M BLACK (19.4%) and nearly 1.0 percentage point below the MY Solar M2 Series (19.98%). In low-albedo installations (dark rooftops, no reflective ground surface) the bifacial gain may not fully offset this difference — higher-wattage variants within the series should be selected for such applications. ## About this series The Haitai Solar N series G12 bifacial double-glass module is designed to maximize energy yield in installations where every extra percentage point matters. A key advantage is the **bifacial design** - the module operates actively from both sides, effectively utilizing reflected light on bright surfaces such as concrete, gravel, or snow. The use of **double glass** increases resistance to moisture, temperature changes, and accelerated aging, thereby reducing the risk of performance degradation over time. In practice, this series also features **multi-busbar technology**, which improves current collection and reduces susceptibility to micro-cracks, as well as solutions that support **high reliability** in more demanding operating conditions. This makes it a good choice for PV farms, commercial installations on flat roofs, and projects where lower system costs and long-term stability are important. Compared to many standard monofacial modules, this series provides more predictable energy yield and greater tolerance to environmental conditions. ## Notable figures - At 19.9% efficiency, this panel is 3.9pp above typical \*\*TOPCon 0-400W\*\* modules (median: 16.0%) - At 200.2 W/m² power density, this panel generates 40.4 W/m² more per unit area than \*\*TOPCon 0-400W\*\* median (159.8 W/m²) - -0.31%/°C temperature coefficient - 0.02pp worse than \*\*TOPCon 0-400W\*\* median (-0.29%/°C), expect higher hot weather losses - At 20.0 kg, this panel is 3.5 kg lighter than \*\*TOPCon 0-400W\*\* median (23.5 kg) - easier handling during installation - Bifacial design (68% factor) captures reflected light - adds 3-10% yield on ground-mount or white roof ## Questions ### What are the warranty terms for the Haitai Solar N series G12 bifacial double-glass module? Haitai Solar provides a 12-year product warranty and a 30-year linear power warranty for the N series G12 bifacial double-glass module. Over those three decades, the manufacturer guarantees a maintained output level with typical annual degradation below 0.4% after year one. This aligns with the longest warranty tiers currently available for TOPCon modules in the commercial segment. ### What does bifacial mean for the Haitai Solar N series G12 and how much extra energy can I expect? Bifacial means the solar cells are active on both the front and rear side of the module. The transparent back glass allows reflected light from the ground surface to reach the rear cells, generating additional power with no added installation complexity. On high-albedo surfaces such as gravel, concrete, or snow, bifacial gain typically ranges from 5 to 25 percent compared to a monofacial module, depending on surface reflectivity and tilt angle. ### Is TOPCon technology in the Haitai Solar N series G12 actually better than standard PERC panels? Yes. TOPCon cells deliver higher conversion efficiency and a better temperature coefficient than PERC cells. In real-world terms this means less power loss during hot weather, approximately minus 0.30 percent per degree Celsius versus minus 0.36 percent for PERC, and improved low-light performance on overcast days. For utility-scale PV farms and commercial rooftop projects where LCOE matters, the N series G12 provides a more predictable long-term energy yield. ### How does the Haitai Solar N series G12 perform in winter and low-irradiance conditions in Central Europe? The TOPCon cell technology offers strong low-light response, which is particularly valuable in Central European climates with a high share of diffuse radiation and overcast days. The low temperature coefficient also means less output loss during summer heat compared to P-type modules. Double-glass construction provides high resistance to moisture ingress and freeze-thaw cycles, addressing the main environmental stress factors in this region. ### What are the best use cases for the Haitai Solar N series G12 bifacial double-glass module, and is it suitable for flat roofs? The N series G12 bifacial double-glass is best suited for utility-scale PV farms, commercial flat-roof installations with light-colored membranes, and ground-mounted projects with gravel or concrete ballast. On flat roofs the module takes full advantage of reflected irradiance from the roofing surface. For small pitched residential roofs, a more compact module format is generally a better fit due to size and weight constraints. ### Is Haitai Solar a Tier 1 manufacturer, and can I rely on warranty service in Europe? Haitai Solar holds Tier 1 status according to Bloomberg NEF classification, confirming the financial and manufacturing capacity required for long-term warranty obligations. The company is headquartered in China and distributes modules through authorized importers across Europe. Before purchasing, confirm with your distributor that a clear warranty claim process and local service channel are in place, as this varies by country and distribution partner. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/210topcon60-f5b719a6933a.pdf) ## Alternatives | Panel | Power | How it differs | | --- | --- | --- | | [JA Solar NS-300MH-72](https://comparepv.com/panel/ja-solar-ns-300mh-72) | 300 W | Lighter, +3.4 pp, -5 yr warranty | | [PolyCrown Solar Tech NS-300MH-72](https://comparepv.com/panel/polycrown-solar-tech-ns-300mh-72) | 300 W | Lighter, +3.4 pp, -5 yr warranty | | [Heckert Solar ZEUS 1.2 FullBlack 280W](https://comparepv.com/panel/heckert-solar-zeus-1-2-fullblack-280w) | 280 W | Cooler, lighter, +3.4 pp | | [JA Solar NS-330MH-80](https://comparepv.com/panel/ja-solar-ns-330mh-80) | 330 W | Lighter, +3.2 pp, -5 yr warranty | | [PolyCrown Solar Tech NS-330MH-80](https://comparepv.com/panel/polycrown-solar-tech-ns-330mh-80) | 330 W | Lighter, +3.2 pp, -5 yr warranty | | [Gamko New Energy GKA182M285W](https://comparepv.com/panel/gamko-new-energy-gka182m285w) | 285 W | -40 W, lighter, +3.1 pp | | [Gamko New Energy GKA182M300W](https://comparepv.com/panel/gamko-new-energy-gka182m300w) | 300 W | -25 W, lighter, +3.1 pp | | [Gamko New Energy GKA210M320W](https://comparepv.com/panel/gamko-new-energy-gka210m320w) | 320 W | Lighter, +3.1 pp | | [Gamko New Energy GKA210M340W](https://comparepv.com/panel/gamko-new-energy-gka210m340w) | 340 W | +15 W, lighter, +3.1 pp | | [Haitai Solar CETC-310T(GDF)/60](https://comparepv.com/panel/haitai-solar-cetc-310t-gdf-60) | 310 W | -15 W, -0.9 pp | | [Haitai Solar CETC-315T(GDF)/60](https://comparepv.com/panel/haitai-solar-cetc-315t-gdf-60) | 315 W | -10 W, -0.6 pp | | [Haitai Solar CETC-320T(GDF)/60](https://comparepv.com/panel/haitai-solar-cetc-320t-gdf-60) | 320 W | -0.3 pp | | [Maxeon SPR-MAX3-400-COM](https://comparepv.com/panel/maxeon-spr-max3-400-com) | 400 W | +75 W, +2.7 pp, +10 yr warranty | | [Lina Energy LEPV 400](https://comparepv.com/panel/lina-energy-lepv-400) | 400 W | +75 W, cooler, +2.4 pp | | [Phono Solar NS-360MH-60](https://comparepv.com/panel/phono-solar-ns-360mh-60) | 360 W | +35 W, +2.2 pp, -5 yr warranty | | [PolyCrown Solar Tech NS-360MH-60](https://comparepv.com/panel/polycrown-solar-tech-ns-360mh-60) | 360 W | +35 W, +2.2 pp, -5 yr warranty | --- Source: https://comparepv.com/panel/haitai-solar-cetc-325t-gdf-60 Not in this file, on the page: a thirty-year output simulator, a bifacial gain calculator and alternatives filtered by how closely they match these dimensions.