--- title: "Bisol BDO 340 Solar Panel: Specs & Datasheet | ComparePV" description: "Bisol BDO 340 solar panel. Specs: 17.40% efficiency, Monocrystalline cells, dimensions, warranty and temperature coefficient." source: "https://comparepv.com/panel/bisol-bdo-340" image: "https://comparepv.com/og/panel/bisol-bdo-340.png" updated: 2026-09-11 --- # Bisol BDO 340 Strong in heat, modest efficiency 291 panels in the segment PERC 300-350 W ## Identity - **Manufacturer:** Bisol - **Model:** BDO 340 - **Series:** Lumina - **Rated power:** 340 W - **Cell technology:** PERC - **Bifacial:** yes ## How it compares Compared against segment PERC 300-350 W (291 panels). | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Power (Wp) | 340 W | 325 W | Strong - top 12% | | | Module efficiency | 17.40% | 19.00% | Weak - bottom 22% | 13,475 | | Power density | 174.1 | 190.0 | Weak - bottom 23% | 13,463 | | Temperature coefficient | -0.300 | -0.360 | Strong - top 5% | 6,152 | | Weight (kg) | 22.0 kg | 19.0 kg | Typical | | | Performance warranty | 25 yrs | 25 yrs | Typical | 9,912 | ### Full peer table | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Module efficiency | 17.40% | 19.00% | Weak - bottom 22% | 13,475 | | Power density | 174.1 | 190.0 | Weak - bottom 23% | 13,463 | | Temperature coefficient | -0.300 | -0.360 | Strong - top 5% | 6,152 | | Weight per kWp | 64.7 | 60.3 | Typical | 13,115 | | Performance warranty | 25 yrs | 25 yrs | Typical | 9,912 | ### Strengths - **-0.300 %/°C temperature coefficient** - Top 5% of the PERC 300-350 W segment, against a median of -0.360. Ranked 6,152nd in the whole database. ### Watch out for - **17.40% module efficiency** - Bottom 22% of the PERC 300-350 W segment, against a median of 19.00%. - **174.1 watts per square metre** - Bottom 23% of the PERC 300-350 W segment, against a median of 190.0. - **Best for:** BIPV, agrivoltaic, shaded-installations and commercial. - **Not ideal for:** Tight roof space and roofs where every square metre has to count. ## Specification ### Electrical - **Rated power (Pmax):** 340 W - **Efficiency:** 17.40 % - **Voltage at Pmax (Vmp):** 26.80 V - **Current at Pmax (Imp):** 12.70 A - **Open-circuit voltage (Voc):** 32.30 V - **Short-circuit current (Isc):** 13.30 A - **Max system voltage:** 1500 V ### Temperature - **Temperature coefficient of Pmax:** -0.300 %/degC - **Temperature coefficient of Voc:** -0.250 %/degC - **Temperature coefficient of Isc:** 0.045 %/degC - **NOCT:** 42 degC ### Cell and construction - **Cell type:** Monocrystalline - **Cell technology:** PERC - **Cell count:** 84 - **Bifacial:** yes - **Bifacial gain:** 40.00 ### Physical - **Length:** 1722 mm - **Width:** 1134 mm - **Thickness:** 30 mm - **Weight:** 22.0 kg - **Area:** 1.95 m2 - **Power density:** 174.1 Wp/m2 ### Warranty and degradation - **Product warranty:** 15 years - **Performance warranty:** 25 years - **Output guaranteed at end of warranty:** 85.0 % - **First-year degradation:** 3.00 % - **Annual degradation:** 0.50 % - **Output after 30 years:** 281 W ## Rank in the whole catalogue | Measure | Position | | --- | --- | | Efficiency | 13475 of 14129 | | Power density | 13463 of 14129 | | Temperature coefficient | 6152 of 14129 | | Weight | 13115 of 14129 | | Warranty | 9912 of 14129 | ## Pros - **Unique BIPV Design with Transparent Back Sheet** - The module combines the function of a building envelope element with energy generation - its transparent back sheet allows natural light transmission, making it one of the few panels on the market suitable for direct use in carports, skylights, winter gardens, and agrivoltaic installations without additional architectural modifications. - **100% EU Manufacturing (Slovenia since 2004)** - Bisol designs and manufactures its modules in Slovenia, ensuring a shortened supply chain, full compliance with European quality standards, and predictable after-sales serviceability - in contrast to the vast majority of competitors manufacturing in China. - **Favorable Temperature Coefficient of -0.30%/°C** - The Pmax temperature coefficient of -0.30%/°C outperforms typical monofacial PERC modules (-0.35 to -0.37%/°C) and approaches HJT-class performance. This translates into measurably higher energy yields during summer months when rooftop operating temperatures are elevated. - **Bifacial Rear-Side Gain of Up to 60%** - According to the manufacturer's official documentation, the rear side of the module can generate up to 60% additional energy relative to the front side under favorable albedo conditions (light-colored surfaces, agrivoltaic setups), meaningfully increasing total annual energy yield above the rated 340 Wp STC. - **Half-Cut PERC Technology - Enhanced Partial Shading Tolerance** - Splitting cells into half-cut format reduces internal resistance and limits the impact of partial shading on the entire string - a particularly relevant advantage in vertical installations such as carports and facades, where the probability of partial shade is higher than on a conventional pitched roof. ## Cons - **Module Efficiency of 17.4% - Significantly Below Peer Comparables** - Peer-comparable modules achieve 20.3-20.4% efficiency (Panasonic HIT+ N340, Bruk-Bet NIVO EXTREME) at the same rated power of 340 Wp - meaning the Lumina BDO requires approximately 15-17% more mounting area per kilowatt of installed capacity. In space-constrained installations, this difference is operationally significant. - **PERC Technology - Cell Architecture Dating to 2014, Older Generation** - The Lumina series is based on PERC cells introduced to the product lineup in 2014. Newer cell generations (TOPCon, HJT) offer lower LID/LeTID degradation rates and higher bifaciality factors. No information is available regarding a planned migration of the series to N-type cell technology. - **15-Year Product Warranty - Below the Rising Industry Standard** - The manufacturer offers a 15-year product warranty, while leading manufacturers (e.g., Panasonic, REC, Q CELLS Premium) have standardized on 25-year product warranties. For investments with a 20-30 year horizon, this gap may be material in financial risk assessments. - **No Tier-1 BNEF Status - Project Finance Limitations** - Bisol Group does not appear on the BloombergNEF Tier-1 list (confirmed as of Q1 2026), which may complicate non-recourse financing for commercial and utility-scale projects with lenders requiring products from bankable manufacturers - the manufacturer itself has published a statement distancing itself from this classification. ## About this series The **BISOL Lumina BDO** series are bifacial photovoltaic modules with a transparent back sheet, which stand out from standard panels due to their unique combination of aesthetics and functionality. Thanks to the use of **monocrystalline PERC cells in half-cut technology**, as well as a specially designed cell matrix, the modules ensure uniform light penetration - which opens up completely new architectural possibilities. The Lumina series is the ideal solution wherever a panel needs to simultaneously function as a building barrier or roof covering: **carports, greenhouses, roof-mounted skylights, pavilions, and agrivoltaic installations** are its natural environment. The bifacial nature of the cells allows for energy generation from reflected light from the ground, which significantly increases yield compared to classic monofacial modules. An additional advantage is that the panels are **designed and manufactured 100% in the European Union**, which translates into consistent quality and a shortened supply chain. Lumina BDO is the choice for investors and architects looking for a solution in which photovoltaic installation becomes an integral, **aesthetically pleasing element of the building or infrastructure**, rather than just an addition mounted on the roof. ## Notable figures - At 17.4% efficiency, this panel is 2.1pp below the \*\*PERC 0-400W\*\* median of 19.4% - Power density of 174.1 W/m² is 20.1 W/m² below \*\*PERC 0-400W\*\* median (194.2 W/m²) - needs more roof space - Temperature coefficient of -0.30%/°C vs median -0.36%/°C means ~2% less power loss at 65°C - Weight of 22.0 kg is 1.5 kg above \*\*PERC 0-400W\*\* median (20.5 kg) - verify structural support - Bifacial design (70% factor) captures reflected light - adds 4-10% yield on ground-mount or white roof ## Questions ### What types of installations are BISOL Lumina BDO panels best suited for? The BISOL Lumina BDO series is designed primarily for applications where the panel simultaneously serves as a building envelope element or overhead structure. Ideal use cases include carports, winter gardens, roof skylights, canopies, and agrivoltaic installations. The transparent rear layer allows up to 30% of natural light to pass through, integrating the module as an architectural feature of the structure rather than a mere energy source. ### How much additional energy does the bifacial side of the BISOL Lumina BDO panels generate? Thanks to the bifacial cell design, the Lumina BDO series can harvest up to 60% additional energy from the rear surface of the module, generated by irradiance reflected from the ground or surrounding surfaces. Actual yield depends on the ground albedo and panel tilt angle - the best results are achieved over light-colored surfaces, snow, or sand. ### What warranty is provided for BISOL Lumina BDO panels and what does it cover? The manufacturer offers a 15-year product warranty covering material and workmanship defects. In addition, a 25-year linear power output warranty guarantees that the panel will retain at least 85% of its nominal power throughout that period. Both warranties are handled directly by BISOL Group, headquartered in Slovenia, which minimizes risk associated with remote supply chains. ### How do BISOL Lumina BDO panels perform at high temperatures during summer? The Lumina BDO modules feature a power temperature coefficient of -0.30%/°C, which is superior to standard monocrystalline panels (-0.35 to -0.40%/°C). In practice, this means lower power losses on hot days - at a module temperature of 70°C, the panel loses approximately 15% of its nominal power instead of the typical 17-20%, resulting in a measurably higher annual energy yield. ### Are BISOL Lumina BDO panels manufactured in Europe, and why does that matter? Yes, the Lumina BDO series is 100% designed and manufactured within the European Union - BISOL Group's factory is located in Slovenia. European origin translates into consistent quality control, a shorter supply chain, simplified warranty claims, and no exposure to additional import tariffs. For investors executing projects funded by EU subsidies, European panel origin may be a mandatory formal requirement. ### Is the BISOL Lumina BDO 340W panel suitable for building a carport or canopy structure for electric vehicles? Yes, this is one of the typical and recommended applications for this series. With dimensions of 1722 x 1134 x 30 mm and a weight of 22 kg, the module is well suited as a structural element of a load-bearing overhead canopy. The 340 Wp output with the bifacial bonus, combined with approximately 30% light transmittance, provides natural daylighting beneath the covered area. The energy generated by such a carport can be directly routed to electric vehicle charging stations. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/BISOL_Lumina_BDO_EN-4da6742d8e7b.pdf) ## Alternatives | Panel | Power | How it differs | | --- | --- | --- | | [JA Solar NS-300MH-72](https://comparepv.com/panel/ja-solar-ns-300mh-72) | 300 W | -40 W, lighter, +5.9 pp | | [PolyCrown Solar Tech NS-300MH-72](https://comparepv.com/panel/polycrown-solar-tech-ns-300mh-72) | 300 W | -40 W, lighter, +5.9 pp | | [JA Solar NS-330MH-80](https://comparepv.com/panel/ja-solar-ns-330mh-80) | 330 W | Cooler, lighter, +5.8 pp | | [PolyCrown Solar Tech NS-330MH-80](https://comparepv.com/panel/polycrown-solar-tech-ns-330mh-80) | 330 W | Cooler, lighter, +5.8 pp | | [Gamko New Energy GKA182M300W](https://comparepv.com/panel/gamko-new-energy-gka182m300w) | 300 W | Lighter, +5.6 pp, +5 yr warranty | | [Gamko New Energy GKA210M320W](https://comparepv.com/panel/gamko-new-energy-gka210m320w) | 320 W | Lighter, +5.6 pp, +5 yr warranty | | [Gamko New Energy GKA210M340W](https://comparepv.com/panel/gamko-new-energy-gka210m340w) | 340 W | Lighter, +5.6 pp, +5 yr warranty | | [Gamko New Energy GKA210M360W](https://comparepv.com/panel/gamko-new-energy-gka210m360w) | 360 W | Lighter, +5.6 pp, +5 yr warranty | | [Gamko New Energy GKA210M380W (1/4\*4\*38)](https://comparepv.com/panel/gamko-new-energy-gka210m380w-1-4-4-38) | 380 W | Lighter, +5.6 pp, +5 yr warranty | | [Gamko New Energy GKA210M380W (1/2\*4\*19)](https://comparepv.com/panel/gamko-new-energy-gka210m380w-1-2-4-19) | 380 W | Lighter, +5.6 pp, +5 yr warranty | | [Longi Solar LR7-54HJD-510M](https://comparepv.com/panel/longi-lr7-54hjd-510m) | 510 W | +170 W, cooler, +7.6 pp | | [AIKO AIKO-A495-MCE54Mw](https://comparepv.com/panel/aiko-aiko-a495-mce54mw) | 495 W | +155 W, +7.4 pp, +5 yr warranty | | [Longi Solar LR7-54HJD-505M](https://comparepv.com/panel/longi-lr7-54hjd-505m) | 505 W | +165 W, cooler, +7.3 pp | | [WINAICO WST-505BKX54-A2](https://comparepv.com/panel/winaico-wst-505bkx54-a2) | 505 W | +165 W, +7.3 pp, +5 yr warranty | | [AIKO AIKO-A490-MCE54Mw](https://comparepv.com/panel/aiko-aiko-a490-mce54mw) | 490 W | +150 W, +7.1 pp, +5 yr warranty | | [Longi Solar LR7-54HJD-500M](https://comparepv.com/panel/longi-lr7-54hjd-500m) | 500 W | +160 W, cooler, +7.1 pp | --- Source: https://comparepv.com/panel/bisol-bdo-340 Not in this file, on the page: the I-V and temperature curves lifted from the manufacturer's datasheet, a thirty-year output simulator, a bifacial gain calculator and alternatives filtered by how closely they match these dimensions.