Principal Solar Institute

A community for development and installation professionals in the solar industry

The Principal Solar Institute Module Ratings

The Principal Solar Institute’s scientifically designed and certified combination of tests and performance standards provide an unbiased, comprehensive rating system – the PSI PV module rating. Seven essential characteristics related to initial and long-term PV module performance are combined to create the PSI Rating:

  • Actual Tested Maximum Power vs. Advertised
  • Temperature Coefficient at Maximum Power
  • Power at Low Irradiance to Power at High Irradiance Ratio
  • Normal Operating Cell Temperature (NOCT)
  • Total Area Efficiency
  • Negative Power Tolerance
  • Annual Power Reduction

These ratings allow you to make comparisons when analyzing PV modules and help you select the optimal PV module.

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PSI Ratings – PV Solar Modules from Juli New Energy

Here are the PSI Ratings for modules from Juli New Energy, calculated based on initial performance test data. If you don’t see a solar module that you are considering, contact us and we will try to add it.

Rank Manufacturer Model Type Power
(W DC)
PSI Rating Percentile
1Juli New EnergyJLS215PPolycrystalline2158.41*89
2Juli New EnergyJLS210MMonocrystalline2108.30*86
3Juli New EnergyJLS72M320WH(156)Monocrystalline3208.18*83
4Juli New EnergyJLS72M315WH(156)Monocrystalline3158.08*79
5Juli New EnergyJLS205MMonocrystalline2058.07*78
6Juli New EnergyJLS60M265WH(156)Monocrystalline2658.06*78
7Juli New EnergyJLS60P260WH(156)Polycrystalline2607.96*73
8Juli New EnergyJLS72P310WH(156)Polycrystalline3107.95*73
9Juli New EnergyJLS72M310WH(156)Monocrystalline3107.95*73
10Juli New EnergyJLS60M260WH(156)Monocrystalline2607.91*71
11Juli New EnergyJLS200MMonocrystalline2007.91*71
12Juli New EnergyJLS72P305WH(156)Polycrystalline3057.83*67
13Juli New EnergyJLS72M305WH(156)Monocrystalline3057.82*67
14Juli New EnergyJLS60P255WH(156)Polycrystalline2557.79*65
15Juli New EnergyJLS60M255WH(156)Monocrystalline2557.77*64
16Juli New EnergyJLS72M300WH(156)Monocrystalline3007.68*58
17Juli New EnergyJLS72P300WH(156)Polycrystalline3007.68*58
18Juli New EnergyJLS60P250WH(156)Polycrystalline2507.65*57
19Juli New EnergyJLS60M250WH(156)Monocrystalline2507.61*54
20Juli New EnergyJLS72P295WH(156)Polycrystalline2957.56*51
21Juli New EnergyJLS60P245WH(156)Polycrystalline2457.50*48
22Juli New EnergyJLS72P290WH(156)Polycrystalline2907.43*43
23Juli New EnergyJLS60P240WH(156)Polycrystalline2407.35*39
24Juli New EnergyJLS230PPolycrystalline2307.02*22
25Juli New EnergyJLS180MMonocrystalline1807.02*22
26Juli New EnergyJLS225PPolycrystalline2256.87*16
27Juli New EnergyJLS175MMonocrystalline1756.83*16
28Juli New EnergyJLS220PPolycrystalline2206.71*12
29Juli New EnergyJLS170MMonocrystalline1706.64*10
30Juli New EnergyJLS165MMonocrystalline1656.29*5
31Juli New EnergyJLS160MMonocrystalline1606.11*4
32Juli New EnergyJLS155MMonocrystalline1555.92*3

* Modules denoted with an “*” use estimated values for one or more characteristics. Manufacturers can contact us to provide the missing data for these PV modules.

NOTE: PSI Ratings are based on publicly available data, and are subject to change as additional data and proprietary analyses become available for long-term performance.