(HQCL) Completes 64 MWp Delivery to vogt solar in the UK

Leading developer behind four new solar parks featuring high-quality HSL 60 Poly Modules

SEOUL, South Korea, April 16, 2015  — Hanwha Q CELLS Co. Ltd. (the “Company,” or “Hanwha Q CELLS”) (NASDAQ: HQCL), a top-10 global photovoltaic manufacturer of high-quality, cost-competitive solar modules, today announced that four solar farms with a total of 64 MWp of Hanwha Q CELLS high performance HSL 60 PV modules were completed by vogt solar ltd., a fully-owned subsidiary of ib vogt GmbH, in March 2015. The projects are located in the UK regions of Gloucestershire, Telford and Wrekin, Sussex and Kent.

The solar farms have a total expected annual output of 64.6 GWh — enough to power more than 15,000 British homes. ib vogt GmbH is specialized in the development, financing, turnkey realization, operation and asset management of large scale solar power plants.

“During what has been a very challenging first quarter of 2015 for the UK market, Hanwha SolarOne has once again proven to be a reliable supplier of high quality products and has certainly contributed to our success,” said Carl von Braun, CFO of ib vogt. “Hanwha’s new HSL 60 S modules fit perfectly with our concept of highly optimized solar farms that incorporate state-of-the-art technology and top quality engineering components.”

“As a long-time partner of vogt solar, we are proud to work with this solar farm pioneer once again to complete these impactful solar projects,” said Kyung Min Kim, Managing Director of Hanwha SolarOne GmbH, an EU branch of Hanwha Q CELLS. “With the four solar farms connected to the grid, our durable HSL 60 modules will generate clean, reliable solar energy in the UK for many years to come.”

HSL-60 modules, characterized by excellent performance and extended durability, are backed by a 12 year workmanship warranty and a 25 year linear performance warranty.

About Hanwha Q CELLS

In February 2015 Hanwha Q CELLS Co., Ltd. (NASDAQ:HQCL) emerged as a new global solar power leader from combining two of the world´s most recognized photovoltaic manufacturers, Hanwha SolarOne Co., Ltd. and Hanwha Q CELLS Investment Co., Ltd. The combined company is listed on NASDAQ under the trading symbol of HQCL. It is headquartered in Seoul, South Korea, (Global Executive Headquarters) and Thalheim, Germany (Technology & Innovation Headquarters) and is the world’s largest solar cell manufacturer as well as one of the largest photovoltaic module manufacturers. Due to its diverse international production footprint including facilities in China, Malaysia and South Korea, Hanwha Q CELLS is flexibly positioned to address all global markets, even ones with import tariffs, such as the United States and the European Union. Based on its respected “Engineered in Germany” technology, innovation, and quality, Hanwha Q CELLS offers the full spectrum of photovoltaic products, applications, and solutions, from modules to kits to systems to large scale solar power plants. The combined company is also engaged in downstream development and EPC business. Through its growing global business network spanning Europe, North America, Asia, South America, Africa, and the Middle East the company provides excellent services and long-term partnership to its customers in the utility, commercial, government, and residential markets. Hanwha Q CELLS is a flagship company of Hanwha Group, a FORTUNE® Global 500 firm, and a top-ten business enterprise in South Korea. For more information, visit: http://investors.hanwha-qcells.com/.

About ib vogt

Established in 2002, ib vogt GmbH has been focusing on the development of solar power plants in the UK, Germany, the Southeast Asian and Indian markets since 2009.

ib vogt’s activities cover project development, financing, engineering, procurement, construction, operation and maintenance, as well as ownership and asset management of its portfolio.

As a manufacturer-independent integrated developer, the company focuses on tailor made solar power plant solutions that maximize lifecycle performance.

To date ib vogt has realized plants with a total rated output of > 400 MWp. All projects have been commissioned on time, quality and budget. ib vogt and its affiliated companies are also invested in solar power plants with a total rated output of approximately 100 MWp. ib vogt employs over 80 experts in all areas of the PV power plant value chain. The company operates from offices in Germany, United Kingdom, Eastern Europe, India and South East Asia.

For more information, please visit: www.vogt-solar.com

Safe-Harbor Statement

This press release contains forward-looking statements. These statements constitute “forward-looking” statements within the meaning of Section 27A of the Securities Act of 1933, as amended, and Section 21E of the Securities Exchange Act of 1934, as amended, and as defined in the U.S. Private Securities Litigation Reform Act of 1995. These forward-looking statements can be identified by terminology such as “will,” “expects,” “anticipates,” “future,” “intends,” “plans,” “believes,” “estimates” and similar statements. Among other things, the quotations from management in this press release and the Company’s operations and business outlook, contain forward-looking statements. Such statements involve certain risks and uncertainties that could cause actual results to differ materially from those in the forward-looking statements. Further information regarding these and other risks is included in Hanwha Q CELLS’ filings with the U.S. Securities and Exchange Commission, including its annual report on Form 20-F. Except as required by law, the Company does not undertake any obligation to update any forward-looking statements, whether as a result of new information, future events or otherwise.