--- title: "BYD HSBK-30-625 625W Solar Panel - Specs & Review | ComparePV" description: "BYD HSBK-30-625 625W solar panel. Specs: 22.08% efficiency, Monocrystalline cells, dimensions, warranty and temperature coefficient." source: "https://comparepv.com/panel/byd-hsbk-30-625" updated: 2026-09-11 --- # BYD HSBK-30-625 Middle of its segment, modest efficiency 76 panels in the segment HJT 600-650 W ## Identity - **Manufacturer:** BYD - **Model:** HSBK-30-625 - **Series:** HALO - **Rated power:** 625 W - **Cell technology:** HJT - **Bifacial:** yes ## How it compares Compared against segment HJT 600-650 W (76 panels). | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Power (Wp) | 625 W | 625 W | Typical | | | Module efficiency | 22.08% | 22.60% | Weak - bottom 15% | 6,116 | | Power density | 220.8 | 225.8 | Weak - bottom 16% | 6,022 | | Temperature coefficient | -0.260 | -0.240 | Weak - bottom 18% | 511 | | Weight (kg) | 35.3 kg | 33.6 kg | Weak - bottom 24% | | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Full peer table | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Module efficiency | 22.08% | 22.60% | Weak - bottom 15% | 6,116 | | Power density | 220.8 | 225.8 | Weak - bottom 16% | 6,022 | | Temperature coefficient | -0.260 | -0.240 | Weak - bottom 18% | 511 | | Weight per kWp | 56.5 | 54.7 | Weak - bottom 24% | 10,674 | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Watch out for - **22.08% module efficiency** - Bottom 15% of the HJT 600-650 W segment, against a median of 22.60%. - **220.8 watts per square metre** - Bottom 16% of the HJT 600-650 W segment, against a median of 225.8. - **-0.260 %/°C temperature coefficient** - Bottom 18% of the HJT 600-650 W segment, against a median of -0.240. - **Best for:** Residential, commercial, utility-scale and hot-climate. - **Not ideal for:** Tight roof space, roofs where every square metre has to count and hot climates. ## Specification ### Electrical - **Rated power (Pmax):** 625 W - **Efficiency:** 22.08 % - **Voltage at Pmax (Vmp):** 37.86 V - **Current at Pmax (Imp):** 16.51 A - **Open-circuit voltage (Voc):** 45.15 V - **Short-circuit current (Isc):** 17.31 A - **Max system voltage:** 1500 V ### Temperature - **Temperature coefficient of Pmax:** -0.260 %/degC - **Temperature coefficient of Voc:** -0.240 %/degC - **Temperature coefficient of Isc:** 0.040 %/degC - **NOCT:** 45 degC ### Cell and construction - **Cell type:** Monocrystalline - **Cell technology:** HJT - **Cell count:** 120 - **Bifacial:** yes - **Bifacial gain:** 25.00 ### Physical - **Length:** 2172 mm - **Width:** 1303 mm - **Thickness:** 35 mm - **Weight:** 35.3 kg - **Area:** 2.83 m2 - **Power density:** 220.8 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:** 546 W ## Rank in the whole catalogue | Measure | Position | | --- | --- | | Efficiency | 6116 of 14005 | | Power density | 6022 of 14005 | | Temperature coefficient | 511 of 14005 | | Weight | 10674 of 14005 | | Warranty | 21 of 14005 | ## Pros - **Industry-Leading HJT Temperature Coefficient** - HJT technology delivers a Pmax temperature coefficient of -0.24%/°C, compared to -0.35%/°C for standard PERC cells. In Polish climatic conditions, where modules routinely reach 60–70°C during summer, this translates to a real-world daily energy yield advantage of 3–4% over PERC installations of equivalent rated power. - **Bifacial Design with Zero LID/LeTID Degradation** - The bifacial HJT construction captures 5–15% additional energy from rear-side albedo reflection, depending on surface albedo and installation tilt angle. Furthermore, N-type HJT cells are inherently immune to light-induced degradation (LID) and light and elevated temperature induced degradation (LeTID), eliminating the 1–3% power loss during the initial months of operation that is typical of PERC modules. - **30-Year Linear Power Output Warranty** - BYD guarantees module performance for 30 years, making this one of the longest standard warranty terms in the HJT segment. By comparison, several Tier-1 competitors in the standard TOPCon segment offer 25-year warranties with end-of-life retention as low as 84.8%. The extended warranty horizon enhances bankability and investment value for project finance structures. - **High Module Power Output: 625–645 Wp** - The 625–645 Wp power range maximizes installed capacity on constrained rooftop or ground-mount areas, reducing module count, cabling runs, and installation labor. At 645 Wp, the BYD HALO matches the output of the most powerful variants among its direct peers, including the Canadian Solar HiHero+ Bifacial and the Runergy HY-DH156N8. - **BNEF Tier-1 Manufacturer with Strong Financial Stability** - BYD (founded 1995) is listed on the Bloomberg NEF bankable Tier-1 module manufacturer index and ranks among the world's largest industrial producers. Tier-1 status is critical for securing project financing on installations above 10 kW and significantly reduces the risk of warranty default due to manufacturer insolvency. ## Cons - **Module Efficiency Below HJT Peer Median** - The BYD HALO achieves a maximum efficiency of 22.79%, while direct competitors in the same power class (645 Wp) reach higher figures: Canadian Solar HiHero+ Bifacial HJT at 23.9%, and both Runergy HY-DH156N8 and Tongwei TWMND at 23.1%. This gap of 0.3–1.1 percentage points means that achieving an equivalent system rated power requires 1.5% to approximately 5% more mounting area compared to the highest-efficiency competitor in the segment. - **12-Year Product Warranty — Short for Premium HJT** - The product warranty term of 12 years represents the lower end of the standard range for premium HJT panels. Several bifacial HJT manufacturers — including Canadian Solar — offer product warranties of 15–25 years. For commercial and industrial installations with a 25–30 year asset lifecycle, this may necessitate explicit risk provisioning for post-warranty serviceability after year 12. ## About this series BYD HALO photovoltaic panels introduce a new quality to prosumer and industrial installations thanks to the use of advanced **N-type TOPCon cell technology**. This solution effectively eliminates the problem of light-induced degradation and the LeTID phenomenon, which directly translates into stable energy yields over decades of operation. The use of an **innovative SMBB (Super Multi Busbar) structure** allows for much better absorption of sunlight and minimization of internal resistance losses, which clearly distinguishes this series from market standards. The HALO series has been designed for investors looking for the perfect balance between aesthetics and extreme efficiency - **elegant All Black variants** perfectly blend with the modern architecture of residential roofs. Thanks to high resistance to mechanical loads and harsh weather conditions, these modules effectively solve the problem of premature component wear in the demanding Polish climate. This is a product dedicated to homeowners and companies that focus on **maximum power density** from a limited mounting area. Compared to the competition, BYD HALO offers exceptional technological integrity and very low temperature coefficients, which guarantees the highest productivity even on hot days. Choosing this series is a safe investment based on the proven, high-efficiency architecture of modern modules. ## Notable figures - Module efficiency of 22.1% is 0.5pp below average for \*\*HJT 600-650W\*\* panels (median: 22.6%) - Power density of 220.8 W/m² is 5.0 W/m² below \*\*HJT 600-650W\*\* median (225.8 W/m²) - needs more roof space - -0.26%/°C temperature coefficient - 0.02pp worse than \*\*HJT 600-650W\*\* median (-0.24%/°C), expect higher hot weather losses - Weight of 35.3 kg is 1.7 kg above \*\*HJT 600-650W\*\* median (33.6 kg) - verify structural support - Bifaciality factor of 90% can add 4-14% extra yield with reflective mounting surface ## Questions ### How does the HJT technology used in BYD HALO panels differ from mainstream TOPCon modules? HJT (heterojunction) cells combine a crystalline silicon layer with amorphous silicon, resulting in a temperature coefficient of approximately -0.26%/°C — superior to most TOPCon modules, which typically range from -0.30 to -0.35%/°C. This means BYD HALO loses less power output during hot, sunny days. In addition, HJT technology is inherently resistant to light-induced degradation (LID) and light and elevated temperature-induced degradation (LeTID), ensuring stable energy production throughout the module's entire service life. ### What warranty does the BYD HALO series carry, and what exactly does it cover? The BYD HALO series comes with a 12-year product warranty covering physical defects and material faults, as well as a 30-year linear power output warranty. Thanks to the low annual degradation rate inherent to HJT cells — approximately 0.4% per year — modules should retain at least 87–88% of their nominal power after 30 years. BYD's status as a globally present Tier 1 manufacturer provides confidence that the warranty will remain enforceable throughout that entire period. ### Are BYD HALO panels bifacial, and does that make sense for a pitched roof installation? Yes, BYD HALO modules are bifacial — the rear side of the panel can absorb light reflected from the underlying surface or roofing membrane. On pitched roofs the bifacial gain is smaller than in ground-mounted systems, but it can still contribute a few additional percentage points to annual energy yield, particularly with light-colored substrates or snow cover. For rooftop installations, the primary value driver is the high cell efficiency of HJT technology rather than bifaciality itself. ### What is the maximum power output of a BYD HALO module, and is it sufficient for a typical household? The highest-tier variant in the BYD HALO series reaches 645 Wp. For a typical single-family home consuming approximately 4,000–5,000 kWh per year, 8–12 modules are generally sufficient, depending on local irradiance and roof tilt angle. The high per-module power rating means fewer panels are needed for the same roof area, which reduces installation costs and allows a larger system capacity to be fitted within a constrained roof surface. ### Do BYD HALO modules perform well in winter or under overcast conditions — specifically in the Polish climate? Yes. HJT technology is distinguished by an exceptionally low temperature coefficient (-0.26%/°C), which means minimal power losses during high summer temperatures. In winter and under diffuse, overcast light, HJT panels outperform standard PERC modules and older TOPCon designs, owing to the broad spectral absorption range provided by the amorphous silicon layer. Poland's clearly defined four-season climate presents no operational challenge for this series. ### Is BYD HALO available in an All Black variant, and does it suit modern rooftops? Yes, the BYD HALO series offers an All Black variant featuring a black frame and black backsheet or rear glass, which blends seamlessly into dark roofing materials such as ceramic tiles, bituminous shingles, or metal roof tiles. It is a popular choice for buildings subject to architectural or planning requirements, or simply where the homeowner prefers a uniform roof appearance. The All Black variant does not differ meaningfully in efficiency from the standard version. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/byd-hsbk-30-1bcff6eca292.pdf) ## Alternatives | Panel | Power | How it differs | | --- | --- | --- | | [AIKO AIKO-A650-MAE72Mw](https://comparepv.com/panel/aiko-aiko-a650-mae72mw) | 650 W | +25 W, lighter, +3.1 pp | | [AIKO AIKO-A675-MDE72Mw](https://comparepv.com/panel/aiko-aiko-a675-mde72mw) | 675 W | +50 W, lighter, +2.9 pp | | [AIKO AIKO-A645-MAE72Mw](https://comparepv.com/panel/aiko-aiko-a645-mae72mw) | 645 W | +20 W, lighter, +2.9 pp | | [AIKO AIKO-G670-MCH72Mw](https://comparepv.com/panel/aiko-aiko-g670-mch72mw) | 670 W | +45 W, lighter, +2.7 pp | | [Longi Solar LR7-72HVHF-670M](https://comparepv.com/panel/longi-lr7-72hvhf-670m) | 670 W | +45 W, lighter, +2.7 pp | | [AIKO AIKO-A640-MAE72Mw](https://comparepv.com/panel/aiko-aiko-a640-mae72mw) | 640 W | +15 W, lighter, +2.7 pp | | [Jinko Solar JKM650-670N-66QL6-BDV (670W class)](https://comparepv.com/panel/jinko-solar-jkm650-670n-66ql6-bdv-670w-class) | 670 W | +45 W, lighter, +2.7 pp | | [BYD HSBK-30-630](https://comparepv.com/panel/byd-hsbk-30-630) | 630 W | Very close match | | [BYD HSBK-30-635](https://comparepv.com/panel/byd-hsbk-30-635) | 635 W | +10 W, +0.4 pp | | [BYD HSBK-30-640](https://comparepv.com/panel/byd-hsbk-30-640) | 640 W | +15 W, +0.5 pp | | [BYD HSBK-30-645](https://comparepv.com/panel/byd-hsbk-30-645) | 645 W | +20 W, +0.7 pp | | [Gamko New Energy GKA210N120](https://comparepv.com/panel/gamko-new-energy-gka210n120) | 680 W | Hotter, lighter, +2.0 pp | | [Gamko New Energy GKA210N120-675](https://comparepv.com/panel/gamko-new-energy-gka210n120-675) | 675 W | Hotter, lighter, +1.8 pp | | [Q-SUN Solar QN-670HJT-01](https://comparepv.com/panel/q-sun-solar-qn-670hjt-01) | 670 W | +45 W, cooler, +1.6 pp | | [Gamko New Energy GKA210N120-670](https://comparepv.com/panel/gamko-new-energy-gka210n120-670) | 670 W | Hotter, lighter, +1.6 pp | | [Q-SUN Solar QN-665HJT-01](https://comparepv.com/panel/q-sun-solar-qn-665hjt-01) | 665 W | +40 W, cooler, +1.4 pp | --- Source: https://comparepv.com/panel/byd-hsbk-30-625 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.