--- title: "DMEGC GH300M10T-B36HST 300W Solar Panel - Specs & Review | ComparePV" description: "DMEGC GH300M10T-B36HST 300W solar panel. Specs: 11.61% efficiency, Monocrystalline cells, dimensions, warranty and temperature coefficient." source: "https://comparepv.com/panel/hengdian-group-dmegc-magnetics-co-ltd-dmegc-solar-gh300m10t-b36hst" updated: 2026-09-11 --- # DMEGC GH300M10T-B36HST Strong in heat, modest efficiency 74 panels in the segment N-type 200-400 W ## Identity - **Manufacturer:** DMEGC - **Model:** GH300M10T-B36HST - **Series:** Greenhouse - **Rated power:** 300 W - **Cell technology:** N-type - **Bifacial:** yes ## How it compares Compared against segment N-type 200-400 W (74 panels). | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Power (Wp) | 300 W | 360 W | Weak - bottom 5% | | | Module efficiency | 11.61% | 19.49% | Weak - bottom 5% | 13,992 | | Power density | 116.1 | 194.9 | Weak - bottom 5% | 13,982 | | Temperature coefficient | -0.290 | -0.320 | Strong - top 13% | 2,165 | | Weight (kg) | 31.0 kg | 22.0 kg | Weak - bottom 5% | | | Performance warranty | 30 yrs | 25 yrs | Strong - top 23% | 21 | ### Full peer table | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Module efficiency | 11.61% | 19.49% | Weak - bottom 5% | 13,992 | | Power density | 116.1 | 194.9 | Weak - bottom 5% | 13,982 | | Temperature coefficient | -0.290 | -0.320 | Strong - top 13% | 2,165 | | Weight per kWp | 103.3 | 63.8 | Weak - bottom 5% | 13,929 | | Performance warranty | 30 yrs | 25 yrs | Strong - top 23% | 21 | ### Strengths - **-0.290 %/°C temperature coefficient** - Top 13% of the N-type 200-400 W segment, against a median of -0.320. - **30 year performance warranty** - Top 23% of the N-type 200-400 W segment, against a median of 25 yrs. ### Watch out for - **11.61% module efficiency** - Bottom 5% of the N-type 200-400 W segment, against a median of 19.49%. Ranked 13,992nd in the whole database. - **116.1 watts per square metre** - Bottom 5% of the N-type 200-400 W segment, against a median of 194.9. Ranked 13,982nd in the whole database. - **103.3 kg per kWp** - Bottom 5% of the N-type 200-400 W segment, against a median of 63.8. Ranked 13,929th in the whole database. - **Best for:** Agrivoltaic. - **Not ideal for:** Tight roof space, roofs where every square metre has to count and weight-limited structures. ## Specification ### Electrical - **Rated power (Pmax):** 300 W - **Efficiency:** 11.61 % - **Voltage at Pmax (Vmp):** 22.51 V - **Current at Pmax (Imp):** 13.34 A - **Open-circuit voltage (Voc):** 26.75 V - **Short-circuit current (Isc):** 14.04 A - **Max system voltage:** 1500 V ### Temperature - **Temperature coefficient of Pmax:** -0.290 %/degC - **Temperature coefficient of Voc:** -0.250 %/degC - **Temperature coefficient of Isc:** 0.048 %/degC - **NOCT:** 42 degC ### Cell and construction - **Cell type:** Monocrystalline - **Cell technology:** N-type - **Cell count:** 72 - **Bifacial:** yes ### Physical - **Length:** 2278 mm - **Width:** 1134 mm - **Thickness:** 30 mm - **Weight:** 31.0 kg - **Area:** 2.58 m2 - **Power density:** 116.1 Wp/m2 ### Warranty and degradation - **Product warranty:** 15 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:** 262 W ## Rank in the whole catalogue | Measure | Position | | --- | --- | | Efficiency | 13992 of 14005 | | Power density | 13982 of 14005 | | Temperature coefficient | 2165 of 14005 | | Weight | 13929 of 14005 | | Warranty | 21 of 14005 | ## Pros - **Adjustable Light Transmittance 2–50%** - The Greenhouse series (evolved toward the G12RT) offers a light transmittance spectrum from 2% to 50%, enabling precise module selection to match the requirements of a specific crop and climate. None of the listed peer comparables (Jinko Tiger Neo, Q-Cells Q.TRON BLACK, Astronergy ASTRO N7s) feature this capability — it is a unique characteristic exclusive to DMEGC's agrivoltaic series. - **N-type TOPCon + Glass-Glass Construction** - N-type TOPCon cells exhibit lower LID degradation rates and a superior temperature coefficient compared to PERC technology (typically -0.29%/°C vs. -0.35%/°C). The glass-glass laminate provides exceptional resistance to moisture and ammonia — critical in greenhouse and livestock environments where standard backsheets undergo accelerated degradation. - **30-Year Power Output Warranty** - DMEGC guarantees ≥99% power output after year 1 and ≥85% after 30 years, corresponding to a slower degradation curve than the standard 25-year warranties offered by many competing series. For agrivoltaic projects with a typical investment horizon of 25–30 years, this has a direct impact on project bankability. - **Bloomberg NEF Tier 1 — Confirmed Q3 2025** - DMEGC Solar has maintained BloombergNEF Tier 1 status continuously through at least Q3 2025 (annual production capacity: 21 GW). This status is required by the majority of renewable energy project lenders for non-recourse financing, directly reducing the cost of capital for agrivoltaic farm developments. - **Manufacturer with 45 Years of Production Experience** - DMEGC has been in operation since 1980, which — in the context of a 30-year power warranty — is a significant credibility argument. Manufacturer insolvency risk is lower than with newer market entrants, a factor that banks and project insurers typically price as reduced risk premiums for renewable energy projects. ## Cons - **Non-Bifacial Design in an Agrivoltaic Application** - The Greenhouse series has is\_bifacial = false, whereas agrivoltaic installations are among the use cases where bifacial technology delivers the greatest benefits — light reflected from the ground surface and crops can increase energy yield by 5–30% (Oxford Clean Energy, 2024). The direct peer, Astronergy ASTRO N7s, is a bifacial series with 22.3% efficiency, which in above-crop mounting configurations may translate into a measurably higher annual energy yield. - **Peak Efficiency (21.91%) Below Segment Leaders** - The series' maximum efficiency of 21.91% falls short of all three listed peer comparables, which achieve 22.27–22.3% (Jinko Tiger Neo, Q-Cells Q.TRON BLACK, Astronergy ASTRO N7s). The ~0.4 percentage point gap translates to approximately 2% more module area required for the same power target — a meaningful constraint in installations with limited greenhouse floor space. ## About this series The DMEGC Greenhouse series is a specialized solution in the field of agrivoltaics that redefines the way modern agriculture is combined with green energy production. The key distinguishing feature of these modules is their **unique construction transparency**, which allows for the free flow of sunlight necessary for proper plant growth. The use of advanced **N-type TOPCon bifacial cell** technology ensures the panels generate electricity from both sides, maximizing yields even in specific mounting conditions above crops. They solve the land deficit problem, enabling efficient **dual use of the surface** for crops and renewable energy installations simultaneously. Unlike traditional modules, the Greenhouse series provides optimal lighting for crops and protects them from severe weather events such as hail or heavy rain. Thanks to the glass-glass structure, the product is characterized by **extreme resistance to ammonia and moisture**, making it reliable in aggressive agricultural environments. The innovative approach to construction allows for easy installation on various types of support systems used in horticulture. It is an ideal choice for farms seeking energy independence without reducing production acreage. The applied technology eliminates the risk of hot-spots and guarantees stable operation for decades, setting these panels apart from standard market solutions. ## Notable figures - At 11.6% efficiency, this panel is 7.9pp below the \*\*N-type 0-400W\*\* median of 19.5% - Power density of 116.1 W/m² is 78.8 W/m² below \*\*N-type 0-400W\*\* median (194.9 W/m²) - needs more roof space - -0.29%/°C temperature coefficient (median: -0.32%/°C) - retains ~1% more power at high temperatures - At 31.0 kg, this panel is 9.0 kg heavier than the \*\*N-type 0-400W\*\* median (22.0 kg) - more demanding for installation crews - 80% bifaciality enables rear-side power generation, boosting yield by 4-12% on reflective surfaces ## Questions ### How much light do DMEGC Greenhouse panels transmit, and will plants grow well beneath them? The DMEGC Greenhouse series offers adjustable light transmittance ranging from 2% to as much as 50%, allowing growers to select the appropriate variant for a specific crop species. The transparent module construction permits free passage of the solar radiation required for photosynthesis while simultaneously protecting plants from severe weather events such as hail and heavy rainfall. ### What warranty does the manufacturer provide on DMEGC Greenhouse panels? DMEGC provides a 15-year product warranty on the Greenhouse series, covering material and manufacturing defects. The power output warranty extends to 30 years, meaning the manufacturer guarantees a defined minimum energy yield level over three decades of operation. These are standard warranty terms for glass-glass modules intended for long-term agrivoltaic installations. ### How do DMEGC Greenhouse panels differ from conventional photovoltaic panels used in agriculture? Unlike standard modules, the Greenhouse series was designed specifically for agrivoltaic applications: it features a transparent glass-glass structure that transmits light to the crops beneath, employs N-type TOPCon cells that generate current from both sides of the module, and exhibits exceptional resistance to ammonia and moisture. Conventional agricultural panels block light access and degrade rapidly in livestock housing or greenhouse environments. ### Can DMEGC Greenhouse panels be installed on an existing greenhouse or polytunnel structure? Yes, the Greenhouse series is engineered for compatibility with the typical mounting systems used in horticulture and greenhouse construction, including Y-frame and ECG structures. However, the load-bearing capacity of the existing structure should be verified with an installer prior to mounting, as glass-glass modules are heavier than standard EVA-backsheet panels. ### What is the maximum power output of DMEGC Greenhouse panels, and does N-type TOPCon technology make a difference here? Greenhouse series panels achieve a peak power output of up to 445 Wp. N-type TOPCon cell technology is critical to this result: it delivers higher conversion efficiency and lower temperature-induced degradation than older PERC cells, and its surface passivation minimizes the risk of hot-spot formation — an important advantage under the partial shading conditions typical of installations over crops. ### Are DMEGC Greenhouse panels suitable for use in the humid environment of a poultry house or livestock barn? Yes, the Greenhouse series is particularly well suited for such applications. The glass-glass construction — glass on both sides in place of a conventional backsheet — provides exceptional resistance to moisture and to the ammonia released by animal waste and fertilizers. Traditional backsheet modules are prone to rapid delamination under such conditions, whereas Greenhouse modules maintain full integrity throughout their entire service life. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/6708dc4637417-8458ade53215.pdf) ## Alternatives | Panel | Power | How it differs | | --- | --- | --- | | [JA Solar NS-300MH-72](https://comparepv.com/panel/ja-solar-ns-300mh-72) | 300 W | 18 kg lighter, +11.7 pp, -5 yr warranty | | [PolyCrown Solar Tech NS-300MH-72](https://comparepv.com/panel/polycrown-solar-tech-ns-300mh-72) | 300 W | 18 kg lighter, +11.7 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, 17 kg lighter, +11.7 pp | | [JA Solar NS-330MH-80](https://comparepv.com/panel/ja-solar-ns-330mh-80) | 330 W | 16 kg lighter, +11.5 pp, -5 yr warranty | | [PolyCrown Solar Tech NS-330MH-80](https://comparepv.com/panel/polycrown-solar-tech-ns-330mh-80) | 330 W | 16 kg lighter, +11.5 pp, -5 yr warranty | | [Gamko New Energy GKA182M285W](https://comparepv.com/panel/gamko-new-energy-gka182m285w) | 285 W | -15 W, 20 kg lighter, +11.4 pp | | [Gamko New Energy GKA182M260W](https://comparepv.com/panel/gamko-new-energy-gka182m260w) | 260 W | -40 W, 20 kg lighter, +11.4 pp | | [Gamko New Energy GKA182M270W](https://comparepv.com/panel/gamko-new-energy-gka182m270w) | 270 W | -30 W, 20 kg lighter, +11.4 pp | | [Gamko New Energy GKA182M300W](https://comparepv.com/panel/gamko-new-energy-gka182m300w) | 300 W | Lighter, +11.4 pp | | [DMEGC GH285M10T-B36HST](https://comparepv.com/panel/hengdian-group-dmegc-magnetics-co-ltd-dmegc-solar-gh285m10t-b36hst) | 285 W | -15 W, -0.6 pp | | [DMEGC GH290M10T-B36HST](https://comparepv.com/panel/hengdian-group-dmegc-magnetics-co-ltd-dmegc-solar-gh290m10t-b36hst) | 290 W | -10 W, -0.4 pp | | [DMEGC GH295M10T-B36HST](https://comparepv.com/panel/hengdian-group-dmegc-magnetics-co-ltd-dmegc-solar-gh295m10t-b36hst) | 295 W | Very close match | | [DMEGC GH400M10T-B48HST-385](https://comparepv.com/panel/hengdian-group-dmegc-magnetics-co-ltd-dmegc-solar-gh400m10t-b48hst-385) | 385 W | +85 W, +3.3 pp | | [DMEGC GH400M10T-B48HST-390](https://comparepv.com/panel/hengdian-group-dmegc-magnetics-co-ltd-dmegc-solar-gh400m10t-b48hst-390) | 390 W | +90 W, +3.5 pp | | [DMEGC GH400M10T-B48HST-395](https://comparepv.com/panel/hengdian-group-dmegc-magnetics-co-ltd-dmegc-solar-gh400m10t-b48hst-395) | 395 W | +95 W, +3.7 pp | | [AIKO AIKO-A650-MAE72Mw](https://comparepv.com/panel/aiko-aiko-a650-mae72mw) | 650 W | +350 W, lighter, +13.6 pp | --- Source: https://comparepv.com/panel/hengdian-group-dmegc-magnetics-co-ltd-dmegc-solar-gh300m10t-b36hst 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.