In the article the author claims the price reductions came from technology improvements. But some say they are caused by the entry of the Chinese on the market

In the article the author claims the price reductions came from technology improvements. But some say they are caused by the entry of the Chinese on the market with heavy subsidies and dumping practices (http://www.grist.org/solar-power/2011-10-19-are-we-in-a-solar-trade-war-with-china http://www.grist.org/solar-power/2011-10-19-are-we-in-a-sola...).