As the Chinese economy continues to sputter, prominent corporate executives in China and Western economists say there is evidence that local and provincial officials are falsifying economic statistics to disguise the true depth of the troubles.

Jin Mao Tower and the Shanghai World Financial Center, in Shanghai.

Record-setting mountains of excess coal have accumulated at the country’s biggest storage areas because power plants are burning less coal in the face of tumbling electricity demand. But local and provincial government officials have forced plant managers not to report to Beijing the full extent of the slowdown, power sector executives said.