Shares in wind turbine company Windflow Technology will resume trading this morning after the company filed its annual report to NZX.

NZX suspended the shares on Monday after the company failed to provide its annual report for the year to June 30 by October 30.

Last week Windflow said it had sought a waiver from NZX from delivering the annual report, after customer NZ Windfarms began withholding payments from mid-August.

The dispute between the two companies related to turbines provided by Windflow for NZ Windfarms' Te Rere Hau project, near Palmerston North.

In its statement a week ago, Windflow said more than $3.5 million was now owed.

Windflow had delayed its annual meeting until December 16, and wanted to delay delivering its annual report until November 16 because it expected further developments on the matter before then.

Windflow shares last traded at a year low price of $1.20 on Thursday, having been at $2.95 a year ago.