US weighs solar tariffs, unsettling industry

The US Department of Commerce has opened an investigation into whether solar modules imported from Cambodia, Malaysia, Thailand and Vietnam are circumventing duties. California-based panel assembler Auxin Solar filed a petition in February, alleging imports from these countries use components from China, allowing the Chinese components to avoid duties. The four countries account for over half the US' non-Chinese solar cell imports, according to engineering services group Clean Energy Associates. Because it could mean retroactive tariffs, the probe will slow solar growth before the case is even decided, industry groups say.