Dec. 2013

PID-Resistance IntroductionThe first company with all products meet PID-resistance

What Is PID?

1

the cells’ voltage

(which module closest

to the negative pole

is several hundreds of

volts .-400 -200 0 200 400

1

20

Voltage(V)

PID-Resistant Module vs. Normal Module

2

2

D b 8 20

222222222222222222222222222

Defectsarea

Lower Power degradation

Little EL defects Higher Power degradation

Serious EL defects

Key Influencing Factors & Solutions-Cell Level

3

AR Coating -proposed by JA Solar• Thickness• Modification of refractive index

Equipment -proposed by JA SolarHomogeneity

REFERENCE: S. Pingel, O. Frank, “POTENTIAL INDUCED DEGRADATION OF SOLAR CELLS AND PANELS”, 2010

Pease be noticed that we don’t do pre-degradation before testing PID, so this result probably be influenced by LID, and the real PID values should be less than those values.

Test Condition:

�Temperature: 85

�Humidity: 85%

�Voltage: -1000V

�Hours: 96h

Influencing Factors & Solutions-Module Level

4

Test by JA lab

BOM Bill of Materiel

Test Condition:�Temperature: 85�Humidity: 85%�Voltage: -1000V�Hours: 96h

Alternative cover glass

Alternative encapsulation material featuring high volume resistivity

Influencing Factors & Solutions-System Level (Recommended)

5

-75%

-60%

-45%

-30%

-15%

0%

0 40 80 120 160 200 240 280

PID

in %

Hours

System Level-2: Degradation and recovery (applied potential)

Panel A

Panel B

Panel C

Negative potential -1000V Positive potential +1000V

+

-

+

System Level-1 (-)GroundingGrounding of the negative pole of the PV system

Applying a positive potential to the negative pole of the system at night for regeneration.

Applying micro-inverter : cost may be increased

About JA Solar PID-Resistant Product

Certification and Monitor resultJA PID resistant product have been certified by TUV SUD & PI BerlinJA changed all cell product to PID-resistant process from Oct.2012

and monitor at regular intervals. The following is our monitor result :

87# 96h 89# 96h 92# 96h91# 96h

About JA PID-Resistant Product

Mass production progress-Cell

JAC M6SF JAC P6RFJAC M5SFJA PID-resistant cell has no effect on

module’s encapsulation power-loss

electrical performance

reliability and color

2012

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

All meet 25 ,85%RH,-1000V negative voltage,

168 hours PID resistant

All meet 60 ,85%RH,-1000V negative voltage,

96 hours PID resistant

Majority meet 85 ,85%RH,-1000V negative voltage,

96 hours PID resistant

JA Solar New Product With Better PID Resistance

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The latest high efficiency multi-crystalline cells technology (Black Silicon),

Better PID resistance performance compared to conventional modules

>18.3% average efficiency of Multi-Si cells

265 W/270W rated power is expected for 6x10 modules

-Will Be Lunched

Shanghai, China (with EU, US & Japan Offices)

May 2005 / February 2007 JASO (NASDAQ)

c-Si solar module , cell & system supplier

1.7GW in 2012

High efficiency, reliability

1.8 GW Module, 2.5 GW Cell, 1.0 GW Wafer

Mission: Responsible Partners

9,784 as of December 31, 2012

Headquarters

Shipments

Mission

Founded / IPO

Product Highlights

Capacity (Annual)

Employees

Business

JA Solar Overview

9

Selectively Optimized Vertically Integrated Model

10

Polysilicon Silicon wafer Cell Module System

Solar wafers Solar cells PV modules EPC

Low-cost, high-quality productionLeading the industry in high-efficiency wafer research

One of the world’s largest manufacturers Recognized for top tech at low costHigh-performance mono- and multi-crystalline solar cells

High-quality product with high-quality BOMAdditional channel for product distributionWorking with leading brands on OEM modules

Partnering with top-tier developers in ChinaCooperation with global leading IPPs on utility scale projects

Silicon wafer Cell Module System

Average efficiency in mass production:− Mono-crystalline cell: 19.4%− Multi-crystalline cell: 17.9%Excellent solderability− Application of double printing technology in

production enhances solderability

Innovation – Highest Efficiency in Main Stream Cells & Modules (P-type, 80% market share in the world)

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Industrial Average:

18.9% Industrial Average:

17.6%

+0.5%

+0.3%

15.0%

16.0%

17.0%

18.0%

19.0%

20.0%

Mono Cell Multi Cell

JA :19.4%

JA :17.9%

High efficiency cells in mass production

High efficiency solar moduleAverage efficiency in mass production:− Mono-crystalline module: 16.5%− Multi-crystalline module: 15.9%Reliable Quality− 100% EL double-inspection ensures modules

are defect free− Potential Induced Degradation (PID) Resistant

High efficiency modules in mass production

Industrial Average: 15.9%

Industrial Average: 15.3%

+0.6%+0.6%

12.0%

13.0%

14.0%

15.0%

16.0%

17.0%

18.0%

Mono Module Multi Module

JA: 16.5%

JA: 15.9%

CYPRESS Series high efficiency solar cell

Product Reliability – Long-term Reliability & Special Tests

� TÜV-Rheinland Ammonia Resistance Test Certificate

� Intertek Salt Fog Spray Test Certificate

� TÜV-NORD Salt Mist Spray Test Certificate

� Certificate for H2S Acid Test

� Overall Factory Audit by Third-party PI-Berlin

� DH1000 to DH3000

� TC200 to TC600

� Mechanical load test 5400Pa to 10000Pa

� HAST test DH1000 to 121 and 100%RH

� PID test -1000V, 85 85%RH, 96h

� Thresher test: HF 30, Hot Spot 20h

Special Test Certification & Factory Audit Program

Long-term Reliability Test

12

Healthy Financial Conditions

Total Liabilities / Total Equity

13

153%241% 275%

445%602% 658% 665%

788%

1163%

Average: 604.8%

0%

200%

400%

600%

800%

1000%

1200%

1400%

JASO Trina Hanwha Suntech** CSIQ Jinko Renesola Yingli LDKPeer A Peer B^ Peer C Peer DPeer G** Peer FPeer E Peer H*

Source: Company filings.Note: Balance sheet figures are as of 6/30/2013 (except ** as of 3/31/2012, ^ as of 3/31/2013).Peer H* Total Liabilities / Total Equity value is negative, illustrated in absolute value for comparison purpose(1): including restricted cash

Current Ratio

113% 109% 102% 100%86% 72% 66%

64%

19%

Average: 77.2%

0%

50%

100%

150%

JASO Hanwha CSIQ Trina Yingli Jinko Renesola Suntech** LDKPeer HPeer D Peer G**Peer CPeer FPeer EPeer B^ Peer A

Thank You

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