JA Solar Modules Pass PID Tests Conducted by TUV SUD

Tested under extreme conditions

SHANGHAI, China, Jan. 23, 2013 JA Solar Holdings Co.,

Ltd. (Nasdaq:JASO) ("JA Solar" or the "Company"), one of the world's largest
manufacturers of high-performance solar power products, today announced that
its multicrystalline and monocrystalline PV modules successfully passed
Potential Induced Degradation (PID) tests conducted by TV SD,
one of the world's leading providers of testing and certification services.

JA Solar's modules were tested under extreme conditions, including
temperatures of 85 degrees Celsius, 85% relative humidity, and 1,000 volts
of system bias voltage, for a duration of 96 hours. Test results showed less
than 1% power degradation in the modules.

The solid performance of JA Solar's modules stems from the Company's
adoption of PID-resistant solar cells in the module-manufacturing process.
The PID-resistant cells significantly decrease undesired power loss caused
by high system voltages, lengthen the lifespan of modules, and ensure stable
operation in adverse weather conditions.

"The strong performance of our modules in TV SD's PID tests
represents another milestone in JA Solar's efforts to produce
industry-leading products with superior stability," said Mr.Yong Liu, CTO of
JA Solar. "Customers value JA Solar for the reliability and efficiency of
our product offering, and our persistent focus on technological innovation
ensures that we meet and exceed their high expectations."

About JA Solar Holdings Co., Ltd.
JA Solar Holdings Co., Ltd. is a leading manufacturer of high-performance
solar power products that convert sunlight into electricity for residential,
commercial, and utility-scale power generation. The Company is one of the
world's largest producers of solar cells. Its standard and high-efficiency
product offerings are among the most powerful and cost-effective in the
industry. The Company also produces solar modules that it distributes under
its own brand and produces on behalf of solar manufacturers globally. The
Company shipped 1.69 GW of solar power products in 2011. JA Solar is headquartered in
Shanghai, China, and maintains production facilities in Shanghai, as well as
Hebei, Jiangsu and Anhui provinces. For more information, please visit

Featured Product

Bonfiglioli - Integrated AGILE frequency inverter for wind turbines

Bonfiglioli - Integrated AGILE frequency inverter for wind turbines

Integrated Agile, Bonfiglioli's frequency inverters for wind turbines, are available as custom design products on request, for Wind Solutions system integrators. Integrated Agile inverters can be mounted directly to the motor and represent a very compact alternative to the traditional yaw system without inverter or with the motor supplied by a standard frequency converter installed in a cabinet.