--- title: "Panasonic EVPV390HK 390W Solar Panel - Specs & Review | ComparePV" description: "Panasonic EVPV390HK 390W solar panel. Specs: 21.10% efficiency, Monocrystalline cells, dimensions, warranty and temperature coefficient." source: "https://comparepv.com/panel/panasonic-evpv390hk" updated: 2026-09-11 --- # Panasonic EVPV390HK Light for its output, weak in heat 45 panels in the segment HJT 350-400 W ## Identity - **Manufacturer:** Panasonic - **Model:** EVPV390HK - **Series:** EVERVOLT Solar Module Black Series - **Rated power:** 390 W - **Cell technology:** HJT ## How it compares Compared against segment HJT 350-400 W (45 panels). | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Power (Wp) | 390 W | 380 W | Strong - top 19% | | | Module efficiency | 21.10% | 20.90% | Typical | 9,297 | | Power density | 210.8 | 209.3 | Typical | 9,551 | | Temperature coefficient | -0.260 | -0.259 | Weak - bottom 9% | 511 | | Weight (kg) | 20.5 kg | 22.8 kg | Strong - top 24% | | | Performance warranty | 25 yrs | 30 yrs | Weak - bottom 19% | 9,798 | ### Full peer table | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Module efficiency | 21.10% | 20.90% | Typical | 9,297 | | Power density | 210.8 | 209.3 | Typical | 9,551 | | Temperature coefficient | -0.260 | -0.259 | Weak - bottom 9% | 511 | | Weight per kWp | 52.6 | 59.2 | Strong - top 24% | 6,190 | | Performance warranty | 25 yrs | 30 yrs | Weak - bottom 19% | 9,798 | ### Strengths - **52.6 kg per kWp** - Top 24% of the HJT 350-400 W segment, against a median of 59.2. ### Watch out for - **-0.260 %/°C temperature coefficient** - Bottom 9% of the HJT 350-400 W segment, against a median of -0.259. Ranked 511th in the whole database. - **25 year performance warranty** - Bottom 19% of the HJT 350-400 W segment, against a median of 30 yrs. - **Best for:** Residential, shaded-installations and hot-climate. - **Not ideal for:** Hot climates and owners who want a long output guarantee. ## Specification ### Electrical - **Rated power (Pmax):** 390 W - **Efficiency:** 21.10 % - **Voltage at Pmax (Vmp):** 40.60 V - **Current at Pmax (Imp):** 9.61 A - **Open-circuit voltage (Voc):** 48.40 V - **Short-circuit current (Isc):** 10.38 A - **Max system voltage:** 1000 V ### Temperature - **Temperature coefficient of Pmax:** -0.260 %/degC - **Temperature coefficient of Voc:** -0.240 %/degC - **Temperature coefficient of Isc:** 0.040 %/degC - **NOCT:** 44 degC ### Cell and construction - **Cell type:** Monocrystalline - **Cell technology:** HJT ### Physical - **Length:** 1821 mm - **Width:** 1016 mm - **Thickness:** 30 mm - **Weight:** 20.5 kg - **Area:** 1.85 m2 - **Power density:** 210.8 Wp/m2 ### Warranty and degradation - **Product warranty:** 25 years - **Performance warranty:** 25 years - **Output guaranteed at end of warranty:** 92.0 % - **First-year degradation:** 2.00 % - **Annual degradation:** 0.25 % - **Output after 30 years:** 354 W ## Rank in the whole catalogue | Measure | Position | | --- | --- | | Efficiency | 9297 of 14005 | | Power density | 9551 of 14005 | | Temperature coefficient | 511 of 14005 | | Weight | 6190 of 14005 | | Warranty | 9798 of 14005 | ## Pros - **HJT technology with half-cut cells** - The combination of heterojunction (HJT) cells and half-cut cell layout improves shading tolerance and lowers the power temperature coefficient (typically around -0.26%/°C versus roughly -0.35 to -0.40%/°C for standard PERC), reducing power losses on hot days. - **25-year AllGuard/TripleGuard warranty** - Panasonic covers the series with a combined 25-year product, power, parts, and labor warranty when installed by an authorized installer and registered within 60 days - broader than the common 12-15 year product / 25-year power split offered by many competitors. - **Competitive 21.1% efficiency** - At 21.1% efficiency, the module ranks in the upper tier of comparable 390 Wp panels - higher than JA Solar's JAM60S21 (21.0%) and close to Meyer Burger Glass (21.2%) and Phono Solar Twinplus (21.3%). - **Full black aesthetics** - The Black Series pairs black cells, frame, and backsheet, easing visual integration on dark pitched roofs of single-family homes without sacrificing the electrical parameters of the standard version. - **Panasonic's technology legacy** - Founded in 1918 in Japan, Panasonic has developed heterojunction technology since acquiring Sanyo's HIT patents, giving the EVERVOLT series a long R&D heritage in HJT cells, even though manufacturing was later shifted to subcontractors. ## Cons - **Production discontinued - global exit** - On April 28, 2025, Panasonic announced a full withdrawal from the solar panel and battery storage business worldwide, after already closing its in-house HJT manufacturing lines in Malaysia and Shimane Prefecture by March 2022. Panasonic states it will honor existing warranties, but service, spare parts, and after-sales support availability for new installations is now significantly limited. - **Manufacturing shifted to a subcontractor** - After closing its own factories in 2021-2022, Panasonic-branded EVERVOLT modules were produced by a subcontracted manufacturer, which may raise questions about production consistency compared to the earlier fully in-house HIT/HJT lines. - **Efficiency trails part of the competition** - At 21.1%, the module falls behind Phono Solar Twinplus (21.3%) and Meyer Burger Glass (21.2%) within the same 390 Wp power class - a small gap, but one that could tip the decision toward these alternatives at comparable pricing. - **Single power variant only** - The Black Series is offered exclusively in a 390 Wp variant, limiting flexibility for unusual roof layouts compared to manufacturers offering multiple power ratings within the same product line. ## About this series The Panasonic EVERVOLT Solar Module Black Series is designed to maximize energy yield even when roof conditions are not ideal. A key advantage is the **heterojunction (HJT) technology** combined with **half-cut cells** - this configuration improves module performance under partial shading and, in practice, stabilizes daily production. Furthermore, **excellent performance at high temperatures** means smaller power drops in summer, which, in Polish prosumer installations, translates directly into higher yields during the peak solar season. The Black Series variants also feature **a complete, black aesthetic** that complements modern roofs and facades - without compromising performance. The series is primarily aimed at single-family homes and buildings where every square meter of roof space is valuable. The entire package is complemented by a **25-year warranty**, which is important for those who want to minimize risk and plan a long-term return on investment. ## Notable figures - Efficiency of 21.1% matches the \*\*HJT 0-400W\*\* median - At 210.8 W/m² power density, this panel generates 4.4 W/m² more per unit area than \*\*HJT 0-400W\*\* median (206.4 W/m²) - At -0.26%/°C, hot weather performance is typical for \*\*HJT 0-400W\*\* panels - At 20.5 kg, weight matches the \*\*HJT 0-400W\*\* median - #9297 for efficiency, #511 for temperature performance out of 14005 panels ## Questions ### Is the Panasonic EVERVOLT Solar Module Black Series still available for purchase? No. Panasonic officially discontinued the entire EVERVOLT line — including the Black Series — in April 2025, fully exiting the residential solar panel and energy storage market. Some installers may still have remaining stock, but availability is extremely limited. Panasonic has confirmed it will continue to honor all warranties for panels already installed or purchased before the product line was retired. ### What warranty does the Panasonic EVERVOLT Black Series carry? The series comes with a 25-year product warranty and a 25-year linear power warranty. Panasonic guarantees at least 92% of rated output after 25 years. Despite exiting the solar market, Panasonic has publicly committed to honoring these warranties for all panels installed or purchased prior to the line's discontinuation. ### What is HJT technology used in the Panasonic EVERVOLT Black Series, and is the premium worth it? HJT (heterojunction technology) combines a monocrystalline silicon wafer with amorphous silicon layers on both sides. The practical result is a temperature coefficient of only -0.26%/°C, compared to roughly -0.35 to -0.37%/°C for standard PERC modules. During hot summers this translates to a few percent more annual energy yield. For prosumer installations focused on maximizing return over a 25-year horizon, the HJT premium was well justified. ### How does the EVERVOLT Black Series 390W handle partial shading from a chimney or dormer window? Better than most conventional full-cell modules. The half-cut cell design splits the module's electrical circuit into two independent strings, so shading the upper half of the panel does not shut down the entire module's output. On roofs with dormers or chimneys that intermittently shade part of a module, power losses are noticeably lower compared to older full-cell designs. ### What is the maximum power output of the Panasonic EVERVOLT Black Series, and is it compatible with standard inverters? Maximum power is 390 Wp. The electrical parameters fit within the typical MPPT input range of most single-phase and three-phase string inverters operating at 600–1000 V. Before purchasing remaining stock, verify your inverter's MPPT voltage window against the module's Voc and Vmp, since Panasonic no longer updates technical documentation following the line's discontinuation. ### Why is it called the Black Series, and does the all-black design affect panel performance? The Black Series name refers to the fully black aesthetic: black cells, black frame, and black backsheet. This look integrates seamlessly with dark roof tiles and modern facades without sacrificing efficiency. The black surface does absorb marginally more heat under direct sun, but the HJT temperature coefficient of -0.26%/°C effectively offsets this, keeping real-world performance competitive. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/evpv390hk-datasheet-9c8a747566f3.pdf) ## Alternatives | Panel | Power | How it differs | | --- | --- | --- | | [Luxor Solar LX-440M/182-108+GG](https://comparepv.com/panel/luxor-solar-lx-440m-182-108-gg) | 440 W | +50 W, +2.0 pp, +5 yr warranty | | [Gamko New Energy GKA210M340W](https://comparepv.com/panel/gamko-new-energy-gka210m340w) | 340 W | -50 W, +1.9 pp, +5 yr warranty | | [Gamko New Energy GKA210M360W](https://comparepv.com/panel/gamko-new-energy-gka210m360w) | 360 W | Lighter, +1.9 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, +1.9 pp, +5 yr warranty | | [Gamko New Energy GKA210M400W (1/2\*4\*20)](https://comparepv.com/panel/gamko-new-energy-gka210m400w-1-2-4-20) | 400 W | Lighter, +1.9 pp, +5 yr warranty | | [Gamko New Energy GKA210M400W (1/4\*4\*40)](https://comparepv.com/panel/gamko-new-energy-gka210m400w-1-4-4-40) | 400 W | Lighter, +1.9 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, +1.9 pp, +5 yr warranty | | [Jetion JT440SYK(B)](https://comparepv.com/panel/jetion-jt440syk-b) | 440 W | +50 W, +1.8 pp, +5 yr warranty | | [Panasonic EVPV400H](https://comparepv.com/panel/panasonic-evpv400h) | 400 W | +10 W, +0.5 pp | | [Panasonic EVPV410H](https://comparepv.com/panel/panasonic-evpv410h) | 410 W | +20 W, +1.1 pp | | [Maxeon SPR-MAX7-475](https://comparepv.com/panel/maxeon-spr-max7-475) | 475 W | +85 W, +2.9 pp, +15 yr warranty | | [Maxeon SPR-MAX7-470](https://comparepv.com/panel/maxeon-spr-max7-470) | 470 W | +80 W, +2.6 pp, +15 yr warranty | | [Maxeon SPR-MAX7-465](https://comparepv.com/panel/maxeon-spr-max7-465) | 465 W | +75 W, +2.4 pp, +15 yr warranty | | [Maxeon SPR-MAX6-440](https://comparepv.com/panel/maxeon-spr-max6-440) | 440 W | +50 W, +1.7 pp, +15 yr warranty | | [Jetion JT435SYk(B)](https://comparepv.com/panel/jetion-jt435syk-b) | 435 W | +45 W, +1.6 pp, +5 yr warranty | | [Maxeon SPR-MAX3-430-R](https://comparepv.com/panel/maxeon-spr-max3-430-r) | 430 W | +40 W, +1.6 pp, +15 yr warranty | --- Source: https://comparepv.com/panel/panasonic-evpv390hk 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.