The U.S. Commerce Department announced in March 2012 that it would impose tariffs ranging from 2.9% to 4.73% on solar panels imported from China. China has about 47% of the U.S. market for solar panels- with Suntech at 17%, Yingli at 11%, and Trina at 10%. U.S. based companies have 29%, and other including EU countries 24%. The imports of solar panels from China were $2.65 billion in 2011. In the last 4 years Chinese lower priced products have reduced the cost of panels by two thirds. What this does is send a signal to encourage companies to manufacture in the U.S., and show that the U.S. government was taking action against illegal subsidies by China without disrupting the availability of lower cost imports.