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Longi Solar LR5-66HTH-530M
Longi Solar Brand review

LR5-66HTH-530M

530 Wp Monocrystalline
ComparePV verdict

Middle of its segment, short guarantee

Rank 6,818 of 14,005
Compare panels Datasheet PDF
Power (Wp)
530
Typical for its class
Efficiency (%)
22.30
Typical · median 22.18%
Density (Wp/m²)
223.2
Typical · median 221.7
Temp (%/°C)
-0.290
Typical · median -0.300
Weight (kg)
26.0
Typical · median 27.0 kg
Warranty (yrs)
25
Weak · bottom 11%

Longi Solar Hi-MO X6 Explorer series was designed for maximum energy yield from the same rooftop surface - especially in locations where every square meter counts and high module performance is crucial even under varying weather conditions. The key difference compared to many standard panels lies in the application of HPBC back-contact cells, which improves light utilization and supports stable power generation even under weaker sunlight. In practice, this translates to a real advantage during morning, afternoon, and partially cloudy periods.

The Hi-MO X6 Explorer also features enhanced resistance to micro-cracking thanks to full back welding technology, ensuring longer, trouble-free operation - crucial for installations exposed to wind, snow, and cyclic temperature changes. The series also stands out with its elegance and clean appearance, making it a perfect fit for modern residential buildings and premium designs.

This is an excellent choice for both residential and commercial installations where high efficiency, reliability, and predictable energy output over time are key priorities.

Ranking

8,332 panels in the 430-630 W band, all technologies
Metric This panel Median Position in segment Overall rank
Module efficiency 22.30% 22.18% Typical 5,100
Power density 223.2 221.7 Typical 5,050
Temperature coefficient -0.290 -0.300 Typical 2,165
Weight per kWp 49.1 52.7 Typical 2,698
Performance warranty 25 yrs 30 yrs Weak · bottom 11% 9,798
Colour key Strong - top 25% Typical - middle 50% Weak - bottom 25%

Price offers

1 from shops we track
Shop Country Price Per kWp Stock Offer updated Link to shop
Falowniki Online Poland 386.40 zł incl. VAT 729.06 zł/kWp Not stated yesterday Visit shop

Signals from the data

5 positive · 3 caution
Best for

Residential, commercial, utility-scale, shaded-installations and hot-climate.

Not ideal for

Owners who want a long output guarantee.

Watch-outs
25 year performance warranty

Bottom 11% of the 430-630 W band, against a median of 30 yrs.

What owners get
Back contact HPBC cell technology

The use of back contact HPBC cells eliminates the front-side busbar grid, improving light absorption and delivering higher efficiency (up to 22.7%) plus more stable output during morning, afternoon, and diffuse-light conditions compared to conventional PERC/TOPCon cells.

Efficiency at the top of the segment

Peak efficiency of 22.7% matches or slightly exceeds comparable N-type 585 W modules (Hanersun Hitouch 5N and Q-SUN Qrystal N8 at 22.65%, Risen RSM144-9 at 22.6%), confirming a top-tier position in the market segment.

Full back welding - microcrack resistance

Full back welding technology reinforces cell interconnections across the entire rear surface, reducing microcrack risk under wind, snow, and thermal cycling loads - important for long-term reliability on sloped roof installations.

Extended linear power warranty

A power warranty of up to 30 years (with a 15-year product warranty) exceeds the industry-standard 25/12-year package, giving investors a longer horizon of predictable energy yield and stronger investment protection.

Tier-1 bankable manufacturer, 25+ years

Longi Solar has operated since 2000 and holds Tier-1 bankable status, meaning financial credibility recognized by banks and insurers financing commercial installations, and lower investor risk compared to less-established peer brands (Hanersun, Q-SUN).

Trade-offs
Production discontinued in 2025

The Hi-MO X6 Explorer series, launched in 2022, was discontinued in 2025. This means limited availability of replacement parts and constrained warranty servicing over the long term compared to models still in active production.

No bifacial variant

The back contact HPBC design, with metallization on the rear cell surface, precludes bifacial operation - unlike many N-type TOPCon panels that offer an additional 3-8% yield from bifaciality, e.g., on light-colored ground or elevated racking.

Notes from the database
  • Efficiency of 22.3% matches the database median
  • Power density of 223.2 W/m² packs 5.1 W/m² more into the same footprint vs database median (218.1 W/m²)
  • Temperature coefficient of -0.29%/°C matches the database median
  • In the top 36% for efficiency among all N-type panels

Specifications

Open datasheet PDF
Nominal power (Pmax) 530 Wp Nameplate at 1000 W/m², 25 °C
Module efficiency 22.30 % Typical Segment median 22.18%
Vmpp · Impp 40.22 V · 13.18 A Operating point at max power
Voc · Isc 48.57 V · 14.00 A Sizes the string length
Max system voltage 1500 V Longer strings than 1000 V modules
Dimensions 2094×1134×35 mm · 2.37 m² of roof
Weight 26.0 kg Typical Typical · median 27.0 kg
Cells 132 Monocrystalline
Coefficient Pmax -0.290 %/°C Typical median -0.300 of its segment
Coefficient Voc · Isc -0.230 · 0.050 %/°C
NOCT 45 °C At 800 W/m², 20 °C ambient
Product warranty 15 years Hardware defects only
Performance warranty 25 years Weak bottom 11% · median 30 yrs
End-of-warranty output 88.9 % Equals 461 W guaranteed
Degradation 1.50 → 0.40 % First year, then annual

Datasheet charts

Open datasheet PDF

Measured curves published by Longi Solar in this model's datasheet. A chart carrying a wattage was measured on that variant alone - only the ones that describe 530 Wp appear here. The rest cover the whole series.

25-Year Power Warranty 25-Year Power Warranty Whole series

Simulations

Live - change any input
Lifetime output & value
30 years at 1200 kWh/kWp/year and €0.50 per kWh
Power in year 30
-
Lifetime energy
-
Energy value
-

Degradation from this panel's own datasheet figures. No inverter, soiling or shading losses.

Heat losses
-0.290 %/°C against a segment median of -0.300
-
Filter these
Size
Panel Power Eff. Temp. Weight Difference
Longi Solar LR5-66HTH-530M 530 W 22.30% -0.290 26.0 kg You are here
LR7-54HJD-510M 510 W 25.00% -0.240 23.5 kg Cooler, +2.7 pp, +5 yr warranty
AIKO-A495-MCE54Mw 495 W 24.80% -0.260 21.0 kg Lighter, +2.5 pp, +5 yr warranty
LR7-60HVH-560M 560 W 24.80% -0.260 25.0 kg +30 W, +2.5 pp, +5 yr warranty
LR7-54HJD-505M 505 W 24.70% -0.240 23.5 kg Cooler, +2.4 pp, +5 yr warranty
LR7-60HVH-555M 555 W 24.60% -0.260 25.0 kg Cooler, +2.3 pp, +5 yr warranty
AIKO-A490-MCE54Mw 490 W 24.50% -0.260 21.0 kg Lighter, +2.2 pp, +5 yr warranty
LR7-54HJD-500M 500 W 24.50% -0.240 23.5 kg Cooler, +2.2 pp, +5 yr warranty
LR5-66HPH-510M 510 W 21.50% -0.340 25.3 kg -20 W, hotter, -0.8 pp
LR5-66HPH-515M 515 W 21.70% -0.340 25.3 kg -15 W, hotter, -0.6 pp
LR5-66HTH-520M 520 W 21.90% -0.290 26.0 kg -10 W, -0.4 pp
LR5-66HTH-525M 525 W 22.10% -0.290 26.0 kg Very close match
LR5-66HTH-535M 535 W 22.50% -0.290 26.0 kg Very close match
LR5-66HTH-540M 540 W 22.70% -0.290 26.0 kg +10 W, +0.4 pp
GKA120N-PRO-590W 590 W 23.82% -0.300 26.7 kg +60 W, +1.5 pp, +5 yr warranty
GKA120N-PRO-585W 585 W 23.62% -0.300 26.7 kg +55 W, +1.3 pp, +5 yr warranty
BGO 580 580 W 23.50% -0.290 26.0 kg +50 W, +1.2 pp, +5 yr warranty

Found 397 panels of the same or similar size to this one, within ±10 mm. See them here Found 408 panels of the same or similar size to this one, within ±25 mm. See them here Found 425 panels of the same or similar size to this one, within ±50 mm. See them here Found 953 panels of the same or similar size to this one, within ±100 mm. See them here

Common questions

6 answered
Is the Longi Solar Hi-MO X6 Explorer series still available for purchase?
The Hi-MO X6 Explorer series has been discontinued by LONGi Solar and is no longer manufactured. Some distributors may still hold remaining inventory, but availability is limited and varies by seller. If you are considering this model, confirm current stock with your local PV distributor before committing to a system design.
What is HPBC technology in the Hi-MO X6 Explorer panels and why does it matter?
HPBC (Hybrid Passivated Back Contact) is a cell architecture where all electrical contacts are relocated to the rear of the cell, leaving the entire front surface unobstructed for light absorption. In the Hi-MO X6 Explorer this results in module efficiency up to 22.6% and stronger output during morning hours, late afternoon, and partially overcast conditions compared to conventional PERC modules.
How do the Longi Hi-MO X6 Explorer panels perform under cloudy skies and low irradiance?
The HPBC cells in the Hi-MO X6 Explorer have a low temperature coefficient of -0.290%/°C and high sensitivity to diffuse irradiance. Real-world energy yield is noticeably higher than comparably rated PERC modules in low-light conditions — particularly relevant in Central European climates where extended overcast periods are common for much of the year.
What warranty does the Longi Solar Hi-MO X6 Explorer come with?
LONGi Solar provides a 15-year product warranty covering manufacturing defects and material failures, plus a 30-year linear power warranty on the Hi-MO X6 Explorer. First-year power degradation is capped at 1%, with a maximum of 0.4% per year thereafter. This is one of the longer warranty standards available in the premium module segment.
What are the dimensions and weight of the Hi-MO X6 Explorer 585W — will it fit on a standard pitched roof?
The Hi-MO X6 Explorer 585W measures 2278 × 1134 × 35 mm and weighs 27.5 kg. This is a large, heavy commercial-class module. Before installation, confirm that the roof structure and racking system are rated for this size and load. On smaller roof sections or weight-restricted structures, a lower-wattage variant from the same series may be more appropriate.
Can the Hi-MO X6 Explorer handle snow loads and strong wind conditions typical of Polish climates?
Yes. The module uses full back welding technology to minimize micro-crack formation under mechanical stress and thermal cycling. LONGi certifies a front-side static load rating of 5,400 Pa and a rear-side rating of 2,400 Pa — values sufficient for the wind and snow load conditions typical across Poland and Central Europe.
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