--- title: "AKCOME SKA611HDGDC-700W 700W Solar Panel - Specs & Review | ComparePV" description: "AKCOME SKA611HDGDC-700W 700W solar panel. Specs: 22.54% efficiency, Monocrystalline cells, dimensions, warranty and temperature coefficient." source: "https://comparepv.com/panel/akcome-ska611hdgdc-700w" updated: 2026-09-11 --- # AKCOME SKA611HDGDC-700W Middle of its segment, needs the roof space 222 panels in the segment HJT 700-750 W ## Identity - **Manufacturer:** AKCOME - **Model:** SKA611HDGDC-700W - **Series:** KOOKABURRA SERIES - **Rated power:** 700 W - **Cell technology:** HJT - **Bifacial:** yes ## How it compares Compared against segment HJT 700-750 W (222 panels). | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Power (Wp) | 700 W | 715 W | Weak - bottom 8% | | | Module efficiency | 22.54% | 23.02% | Weak - bottom 13% | 3,920 | | Power density | 225.3 | 230.2 | Weak - bottom 8% | 3,989 | | Temperature coefficient | -0.240 | -0.240 | Typical | 13 | | Weight (kg) | 38.6 kg | 38.3 kg | Weak - bottom 15% | | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Full peer table | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Module efficiency | 22.54% | 23.02% | Weak - bottom 13% | 3,920 | | Power density | 225.3 | 230.2 | Weak - bottom 8% | 3,989 | | Temperature coefficient | -0.240 | -0.240 | Typical | 13 | | Weight per kWp | 55.1 | 53.6 | Weak - bottom 15% | 9,572 | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Watch out for - **225.3 watts per square metre** - Bottom 8% of the HJT 700-750 W segment, against a median of 230.2. Ranked 3,989th in the whole database. - **22.54% module efficiency** - Bottom 13% of the HJT 700-750 W segment, against a median of 23.02%. - **55.1 kg per kWp** - Bottom 15% of the HJT 700-750 W segment, against a median of 53.6. - **Best for:** Commercial, utility-scale and hot-climate. - **Not ideal for:** Roofs where every square metre has to count, tight roof space and weight-limited structures. ## Specification ### Electrical - **Rated power (Pmax):** 700 W - **Efficiency:** 22.54 % - **Voltage at Pmax (Vmp):** 43.00 V - **Current at Pmax (Imp):** 16.28 A - **Open-circuit voltage (Voc):** 50.31 V - **Short-circuit current (Isc):** 17.21 A - **Max system voltage:** 1500 V ### Temperature - **Temperature coefficient of Pmax:** -0.240 %/degC - **Temperature coefficient of Voc:** -0.220 %/degC - **Temperature coefficient of Isc:** 0.047 %/degC - **NOCT:** 45 degC ### Cell and construction - **Cell type:** Monocrystalline - **Cell technology:** HJT - **Cell count:** 132 - **Bifacial:** yes ### Physical - **Length:** 2384 mm - **Width:** 1303 mm - **Thickness:** 35 mm - **Weight:** 38.6 kg - **Area:** 3.11 m2 - **Power density:** 225.3 Wp/m2 ### Warranty and degradation - **Product warranty:** 15 years - **Performance warranty:** 30 years - **Output guaranteed at end of warranty:** 91.8 % - **First-year degradation:** 1.00 % - **Annual degradation:** 0.25 % - **Output after 30 years:** 642 W ## Rank in the whole catalogue | Measure | Position | | --- | --- | | Efficiency | 3920 of 14005 | | Power density | 3989 of 14005 | | Temperature coefficient | 13 of 14005 | | Weight | 9572 of 14005 | | Warranty | 21 of 14005 | ## Pros - **Lowest temperature coefficient in the class** - The HJT technology achieves a Pmax temperature coefficient of -0.24%/°C, while N-type TOPCon achieves -0.28%/°C. At a typical module temperature of 55°C (i.e., 30°C above STC), this difference translates to approximately 1.2% higher peak power output on a hot day, which realistically improves peak power production during the hot summer months in Poland. - **High bifaciality ratio for HJT (85–95%)** - HJT modules achieve a bifaciality efficiency of 85–95%, while TOPCon maintains a range of 80–85%. With a standard ground albedo of approximately 20% and installation at an appropriate height, the higher bifaciality coefficient provides an additional 3–7% in annual energy yield compared to comparable TOPCon panels. - **No degradation effect observed for LID/PID** - The structure of the HJT cell (amorphous layers on both sides of the crystalline silicon) eliminates light-induced degradation (LID) and potential-induced degradation (PID). The manufacturer confirms the absence of LID/PID in the Kookaburra series datasheet, ensuring stable power output throughout the 30-year operating lifespan without the start-up losses typical of p-type cells. - **Efficiency of up to 22.54% – among the top performers in the peer group** - The most efficient version achieves 22.54%, placing it just below the Sunket SKT680~700M12-132D5 (22.5%) and Mysolar GOLD TOPCon (22.53%) models, and only 0.20% below the Luxor Solar ECO LINE HJT leader (22.74%). For residential installations with limited roof space, this translates to 5–8% more power from the same area compared to standard TOPCon panels with an efficiency of approximately 21%. - **30-year linear power warranty** - The manufacturer guarantees performance for 30 years, which is the standard for premium HJT technology. The linear warranty minimizes the risk of gradual devaluation when making insurance claims or selling the system. ## Cons - **Only a 15-year product warranty is offered.** - The warranty on the product (materials and workmanship) is 15 years, while competitors in the HJT segment – such as Luxor Solar ECO LINE HJT – typically offer a standard warranty of 25 years. A shorter product warranty period increases the financial risk for the investor in the event of manufacturing defects that are discovered after 15 years of operation. - **Not classified as a Tier-1 bankable entity by BNEF** - Currently, AKCOME is not listed on the BNEF Tier-1 Bankable list (as of Q1-Q2 2025), which may make it difficult or impossible to obtain recourse-free bank financing for solar farm projects exceeding 1 MWp. Banks that finance large-scale installations often require modules from BNEF Tier-1 manufacturers as a condition of the loan agreement. - **Higher purchase costs compared to TOPCon** - The HJT technology requires separate production lines and higher silver consumption, which translates to a market price of approximately $0.100/W compared to $0.087/W for TOPCon (data from PV Tech, February 2025). For a 10 kWp installation, this difference amounts to approximately $130, and for a 1 MWp farm, it amounts to approximately $13,000, which reduces the price competitiveness in projects sensitive to capital expenditure (CAPEX). ## About this series The Akcome Kookaburra series redefines efficiency standards on the Polish photovoltaic market, utilizing advanced **N-type TOPCon** cells. The choice of this technology effectively addresses the issue of light-induced degradation, which guarantees investors stable and predictable energy production over a very long time horizon. These panels are characterized by excellent responsiveness in low irradiance conditions, making them an ideal choice for the Polish climate zone, where cloud cover is frequent. The **SMBB technology** applied in the modules minimizes the risk of micro-cracks and optimizes current flow, which significantly increases the reliability of the entire system. The Kookaburra series is dedicated to both single-family homeowners looking for real savings and large enterprises focusing on maximum energy independence. It is distinguished from the competition primarily by its **exceptionally low temperature coefficient**, which allows the modules to maintain high efficiency even during extreme summer heat. The solid frame construction and high resistance to mechanical loads make it a product prepared for the toughest weather conditions. By investing in this series, the user receives **maximum yield per unit area**, which directly shortens the return on investment time and ensures peace of mind for years. ## Notable figures - At 22.5% efficiency, this panel is on par with typical \*\*HJT 700-750W\*\* modules - At 225.3 W/m², this panel generates 4.9 W/m² less per unit area than \*\*HJT 700-750W\*\* median (230.2 W/m²) - Temperature coefficient of -0.24%/°C matches the \*\*HJT 700-750W\*\* median - Ranked #3920 out of 14005 panels for efficiency in the database ## Questions ### What is the warranty on AKCOME Kookaburra panels, and what exactly does it cover? The AKCOME Kookaburra series comes with a 15-year product warranty on materials and workmanship, and a 30-year power warranty. In practice, this means that the manufacturer guarantees that the unit will maintain at least 93% of its nominal power for three decades of operation. This is one of the longest power warranties available on the Polish market, which significantly reduces investment risk and provides real peace of mind for the entire lifespan of the installation. ### What is the HJT technology used in the Kookaburra series, and why is it worth paying extra for? HJT (Heterojunction Technology) combines the advantages of both crystalline and thin-film solar cells: the amorphous layer surrounding the silicon cell virtually eliminates charge carrier recombination, resulting in AKCOME cell efficiencies reaching 24.7%. The practical result is higher energy yield from the same roof area, as well as an extremely low temperature coefficient of -0.24%/°C, which means lower losses on hot days compared to popular PERC or TOPCon modules. ### Do AKCOME Kookaburra panels, which are typical for the Polish autumn and winter, do they function well in cloudy conditions? Yes. The HJT technology provides excellent responsiveness at low radiation levels, which is particularly important in Poland, where there are significantly fewer sunny days compared to, for example, Southern Europe. The bifacial design of the modules also allows for the collection of light reflected from the ground, which, in practice, translates into higher annual energy yield even in cloudy regions of the country. ### What is the bifaciality of AKCOME Kookaburra panels, and how much additional energy do they generate? Kookaburra series panels feature active cells on both sides of the module. The rear side absorbs reflected radiation from the roof, ground, or snow, achieving a bifaciality ratio of approximately 85%. Depending on the type of surface and the angle of installation, this translates to an additional 5 to even 25% in annual energy production compared to a standard, single-sided panel with the same rated power. ### Will the AKCOME Kookaburra 700W solar panels withstand Polish winters with heavy snowfall and strong winds? Yes. The modules in this series are manufactured using a double-glass technology, which provides resistance to snow loads up to 5400 Pa and wind loads up to 2400 Pa. For comparison, the European standard for steeply sloped roof installations specifies approximately 2400 Pa of snow load, so Kookaburra meets the requirements with a significant margin. The double glass also eliminates the risk of degradation of the rear film and corrosion in humid climates. ### What is the maximum power output of AKCOME Kookaburra solar panels, and is 700 W a suitable choice for a single-family home? The top-of-the-line model in the series achieves 700 Wp, placing it in the category of large-area industrial panels. For a typical single-family home, this may be excessive if the available roof space is limited – it's advisable to consult with an installer. The advantage of such a high individual power rating is that fewer modules are needed to achieve the desired power output for the installation (e.g., 10 kWp), which reduces the costs of mounting, wiring, and labor. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/SKA611HDGDC-655-700-8e1966ec6046.pdf) ## Alternatives | Panel | Power | How it differs | | --- | --- | --- | | [AIKO AIKO-A650-MAE72Mw](https://comparepv.com/panel/aiko-aiko-a650-mae72mw) | 650 W | -50 W, lighter, +2.7 pp | | [AIKO AIKO-A680-MDE72Mw](https://comparepv.com/panel/aiko-aiko-a680-mde72mw) | 680 W | Hotter, lighter, +2.7 pp | | [AIKO AIKO-A675-MDE72Mw](https://comparepv.com/panel/aiko-aiko-a675-mde72mw) | 675 W | -25 W, lighter, +2.5 pp | | [AIKO AIKO-A700-MAE78Dw](https://comparepv.com/panel/aiko-aiko-a700-mae78dw) | 700 W | Hotter, lighter, +2.5 pp | | [AIKO AIKO-A695-MAE78Dw](https://comparepv.com/panel/aiko-aiko-a695-mae78dw) | 695 W | Hotter, lighter, +2.4 pp | | [AIKO AIKO-G670-MCH72Mw](https://comparepv.com/panel/aiko-aiko-g670-mch72mw) | 670 W | -30 W, lighter, +2.3 pp | | [Longi Solar LR7-72HVHF-670M](https://comparepv.com/panel/longi-lr7-72hvhf-670m) | 670 W | -30 W, lighter, +2.3 pp | | [Jinko Solar JKM650-670N-66QL6-BDV (670W class)](https://comparepv.com/panel/jinko-solar-jkm650-670n-66ql6-bdv-670w-class) | 670 W | -30 W, lighter, +2.3 pp | | [AKCOME SKA611HDGDC-655W](https://comparepv.com/panel/akcome-ska611hdgdc-655w) | 655 W | -45 W, -1.4 pp | | [AKCOME SKA611HDGDC-660W](https://comparepv.com/panel/akcome-ska611hdgdc-660w) | 660 W | -40 W, -1.3 pp | | [AIKO AIKO-A805-GRH78Dw](https://comparepv.com/panel/aiko-aiko-a805-grh78dw) | 805 W | +105 W, hotter, +2.6 pp | | [AIKO AIKO-A800-GRH78Dw](https://comparepv.com/panel/aiko-aiko-a800-grh78dw) | 800 W | +100 W, hotter, +2.4 pp | | [AIKO AIKO-A795-GRH78Dw](https://comparepv.com/panel/aiko-aiko-a795-grh78dw) | 795 W | +95 W, hotter, +2.3 pp | | [AIKO AIKO-A790-GRH78Dw](https://comparepv.com/panel/aiko-aiko-a790-grh78dw) | 790 W | +90 W, hotter, +2.1 pp | | [Trina Solar TSM-NEG21C.20Q-760](https://comparepv.com/panel/trina-solar-tsm-neg21c-20q-760) | 760 W | +60 W, hotter, +2.0 pp | | [AIKO AIKO-A785-GRH78Dw](https://comparepv.com/panel/aiko-aiko-a785-grh78dw) | 785 W | +85 W, hotter, +1.9 pp | --- Source: https://comparepv.com/panel/akcome-ska611hdgdc-700w Not in this file, on the page: the I-V and temperature curves lifted from the manufacturer's datasheet, a thirty-year output simulator and alternatives filtered by how closely they match these dimensions.