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Philadelphia Solar Brand review

PS-M60-305W

305 Wp PERC
ComparePV verdict

Middle of its segment, weak in heat

Rank 13,335 of 14,129
Compare panels Datasheet PDF
Power (Wp)
305
Weak · bottom 10%
Efficiency (%)
18.70
Typical · median 19.00%
Density (Wp/m²)
186.9
Typical · median 190.0
Temp (%/°C)
-0.390
Weak · bottom 16%
Weight (kg)
18.0
Typical · median 19.0 kg
Warranty (yrs)
25
Typical · median 25 yrs

The PS-M60-(305-330W) series is a proven solution for installers seeking a versatile monocrystalline panel suited equally well to residential rooftops and larger commercial installations. The modules are built on 60 Grade A Mono PERC cells arranged in a 10x6 configuration, delivering stable performance even under less favorable irradiance conditions. The panel stands out for its PID resistance, achieved through a PID-free EVA encapsulant, ensuring no power loss from potential induced degradation. Its tempered anti-reflective glass and anodized aluminum frame construction provide high mechanical strength, certified for wind and snow load resistance. This is a key advantage in Polish climate conditions, where panels must withstand significant snow loads in winter. In addition, the modules are resistant to salt mist and ammonia, making them well suited for coastal installations as well as agricultural applications, such as on livestock buildings. The manufacturer offers low annual power degradation along with a long-term linear warranty, translating into predictable return on investment and lower LCOE throughout the operating life of the photovoltaic installation.

Ranking

291 panels in the segment PERC 300-350 W
Metric This panel Median Position in segment Overall rank
Module efficiency 18.70% 19.00% Typical 13,152
Power density 186.9 190.0 Typical 13,133
Temperature coefficient -0.390 -0.360 Weak · bottom 16% 13,659
Weight per kWp 59.0 60.3 Typical 12,070
Performance warranty 25 yrs 25 yrs Typical 9,912
Colour key Strong - top 25% Typical - middle 50% Weak - bottom 25%

Signals from the data

5 positive · 5 caution
Best for

Residential, commercial and cold-climate.

Not ideal for

Hot climates.

Watch-outs
-0.390 %/°C temperature coefficient

Bottom 16% of the PERC 300-350 W segment, against a median of -0.360.

What owners get
Certified corrosion and PID resistance

The series holds IEC TS 62804-1 (PID), IEC 61701 (salt mist), and IEC 62716 (ammonia corrosion) certifications, making it a viable choice for both coastal installations and agricultural buildings where standard modules often degrade faster.

Tier-1 manufacturer with 19 years in market

Philadelphia Solar (Jordan, founded 2007) is listed among BNEF Tier-1 bankable manufacturers, easing project financing through commercial banks and reducing investor risk compared to less established brands.

Proven mechanical durability

The module passed the IEC TS 62782 dynamic load test and holds wind and snow load certifications, directly relevant in Polish climate conditions where roof surfaces periodically face high snow loads.

25-year linear power warranty

The manufacturer offers a standard 25-year power warranty for the segment, comparable to peers such as Waaree ARKA (330 Wp, 19.81% efficiency) or JA Solar Monocrystalline80, giving predictable degradation for LCOE planning.

Versatile 60-cell design

The 10x6 Mono PERC class-A cell configuration works well both in small residential installations on pitched roofs and in larger commercial systems, without needing a dedicated module variant.

Trade-offs
Production discontinued

The PS-M60-(305-330W) series, launched in 2017, has been discontinued, meaning limited spare parts availability, no manufacturer service support for warranty claims, and potential difficulty sourcing matching modules to extend an existing installation.

Efficiency below current tier-1 standards

Maximum efficiency of 20.2% falls well short of newer peer modules - e.g. JA Solar Monocrystalline80 reaches 23.15% at the same 330 Wp power - as 2017-era PERC technology has largely been superseded by N-type TOPCon.

Low unit power for today's market

The 305-330 Wp range is significantly lower than current tier-1 modules (400-600+ Wp), requiring more panels, longer strings, and more roof area for the same system capacity.

Shorter product warranty

The 12-year product warranty is shorter than the 15-25 years now standard among leading tier-1 manufacturers, a relevant factor when comparing total lifecycle risk cost.

Notes from the database
  • Efficiency of 18.7% is 0.8pp below the PERC 0-400W median (19.4%)
  • 186.9 W/m² power density is 7.3 W/m² below PERC 0-400W median (194.2 W/m²) - requires larger installation area
  • At -0.39%/°C, loses 0.03pp more power per degree than PERC 0-400W median (-0.36%/°C)
  • At 18.0 kg, this panel is 2.5 kg lighter than PERC 0-400W median (20.5 kg) - easier handling during installation
  • Ranked #13152 out of 14129 panels for efficiency in the database

Specifications

Open datasheet PDF
Nominal power (Pmax) 305 Wp Nameplate at 1000 W/m², 25 °C
Module efficiency 18.70 % Typical Segment median 19.00%
Vmpp · Impp 32.95 V · 9.26 A Operating point at max power
Voc · Isc 40.15 V · 9.78 A Sizes the string length
Max system voltage 1500 V Longer strings than 1000 V modules
Dimensions 1648×990×35 mm · 1.63 m² of roof
Weight 18.0 kg Typical Typical · median 19.0 kg
Cells 60 · PERC Monocrystalline
Coefficient Pmax -0.390 %/°C Weak bottom 16% of its segment
Coefficient Voc · Isc -0.300 · 0.060 %/°C
NOCT 45 °C At 800 W/m², 20 °C ambient
Product warranty 12 years Hardware defects only
Performance warranty 25 years Typical median 25 yrs · median 25 yrs
End-of-warranty output 81.4 % Equals 244 W guaranteed
Degradation 0.65 % Per year after the first

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
-0.390 %/°C against a segment median of -0.360
-
Filter these
Size
Panel Power Eff. Temp. Weight Difference
Philadelphia Solar PS-M60-305W 305 W 18.70% -0.390 18.0 kg You are here
NS-300MH-72 300 W 23.32% -0.290 12.5 kg Cooler, lighter, +4.6 pp
NS-300MH-72 300 W 23.32% -0.290 12.5 kg Cooler, lighter, +4.6 pp
ZEUS 1.2 FullBlack 280W 280 W 23.31% -0.260 14.3 kg Cooler, +4.6 pp, +5 yr warranty
NS-330MH-80 330 W 23.15% -0.290 15.0 kg Cooler, lighter, +4.4 pp
NS-330MH-80 330 W 23.15% -0.290 15.0 kg Cooler, lighter, +4.4 pp
ZEUS 3.2 285WP FullBlack 285 W 23.14% -0.260 15.6 kg Cooler, +4.4 pp, +5 yr warranty
GKA182M285W 285 W 23.00% - 10.8 kg Lighter, +4.3 pp, +5 yr warranty
GKA182M260W 260 W 23.00% - 10.8 kg Lighter, +4.3 pp, +5 yr warranty
GKA182M270W 270 W 23.00% - 10.8 kg Lighter, +4.3 pp, +5 yr warranty
PS-P60-275 275 W 16.90% -0.400 18.0 kg -30 W, hotter, -1.8 pp
PS-P60-280 280 W 17.20% -0.400 18.0 kg -25 W, hotter, -1.5 pp
PS-P60-285 285 W 17.50% -0.400 18.0 kg -20 W, hotter, -1.2 pp
PS-P60-290 290 W 17.80% -0.400 18.0 kg -15 W, hotter, -0.9 pp
PS-M60-310W 310 W 19.00% -0.390 18.0 kg +0.3 pp
PS-M60-315W 315 W 19.30% -0.390 18.0 kg +10 W, +0.6 pp
SPR-MAX3-400-COM 400 W 22.60% -0.270 19.0 kg Cooler, +3.9 pp, +15 yr warranty

Found 191 panels of the same or similar size to this one, within ±10 mm. See them here Found 276 panels of the same or similar size to this one, within ±25 mm. See them here Found 405 panels of the same or similar size to this one, within ±50 mm. See them here Found 487 panels of the same or similar size to this one, within ±100 mm. See them here

About the PS-M60-(305-330W) series

6 answered

These answers cover the whole series. Where a figure differs, the specification above is this module's own.

Is the Philadelphia Solar PS-M60-(305-330W) series still available for purchase?
The PS-M60-(305-330W) series has been discontinued from current production and replaced by newer, higher-power models. These panels may still be available from distributors as remaining stock, so it's worth confirming availability and manufacturing date before purchasing, especially for larger orders requiring uniform module batches.
What is the warranty on Philadelphia Solar PS-M60-(305-330W) panels?
The manufacturer provides a 12-year product warranty covering material and workmanship defects, plus a 25-year linear power output warranty. This guarantees a gradually declining but predictable power output level over a quarter century, translating into a predictable return on investment for the PV installation.
Are PS-M60-(305-330W) panels PID-resistant and suitable for large solar farms?
Yes, the modules use PID-resistant EVA encapsulant, protecting against potential-induced degradation, which can be a significant issue in large installations with high string voltages. This protection keeps power output stable regardless of the system's voltage configuration, making the panels suitable for both residential and commercial-scale PV farms.
How do the Mono PERC cells in PS-M60-(305-330W) differ from standard polycrystalline panels?
The Grade A Mono PERC cells used in this series feature an additional passivation layer on the back of the cell that reflects unused light back into the cell, increasing energy conversion efficiency. Compared to polycrystalline panels, this means higher power output for the same surface area and better performance under low-light or high-temperature conditions.
Are Philadelphia Solar PS-M60-(305-330W) panels suitable for coastal or livestock building installations?
Yes, this series is certified resistant to salt mist and ammonia exposure, which is essential for installations near the sea and on agricultural buildings where ammonia vapors are present in the air. This allows the panels to maintain durability and performance even in corrosive environments that are challenging for standard PV modules.
What is the maximum power rating of a panel in the PS-M60-(305-330W) series, and how many panels are needed for a typical home installation?
The highest-power variant in this series reaches up to 330 Wp. For a typical residential installation of 5-6 kWp, around 15-18 panels are needed, depending on the chosen power variant. Since the series has been discontinued, availability of a specific power rating may be limited when expanding an existing installation.
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