Nov. 29 (Bloomberg) — India is probing allegations that suppliers from the U.S., China, Taiwan and Malaysia sold solar cells in the South Asian nation below cost and whether retroactive duties should be imposed.

There’s “sufficient prima facie evidence” to warrant an investigation into the dumping claims filed by local manufacturers Indosolar Ltd., Jupiter Solar Power Ltd. and Websol Energy System Ltd., India’s Ministry of Commerce and Industry said in a Nov. 23 statement on its website.

The investigation will include imports of both crystalline- silicon and thin-film photovoltaic cells sold in the country between Jan. 1 and June 30, 2011. Suppliers, importers and users of the cells have until Jan. 2 to respond to the allegations, it said.

India joins a trade dispute among the world’s biggest economies as the solar-manufacturing industry grapples with overcapacity and declining profits. The U.S. set final duties on Chinese solar-cell imports on Oct. 10 and the European Union is investigating whether Chinese manufacturers are selling cells and panels at a loss. China started its own probe this week to determine if U.S., European and South Korean suppliers are dumping polysilicon, the raw material used in panels.

To contact the reporter on this story: Natalie Obiko Pearson in Mumbai at

To contact the editor responsible for this story: Reed Landberg at