The International Electrotechnical Commission (IEC) has released the Pre-release version of IEC 61400-12-1:2016. This standard pertains to power performance measurements of electricity producing wind turbines and is now available on the IEC webstore.
Description: “This part of IEC 61400 specifies a procedure for measuring the power performance characteristics of a single wind turbine and applies to the testing of wind turbines of all types and sizes connected to the electrical power network. In addition, this standard describes a procedure to be used to determine the power performance characteristics of small wind turbines (as defined in IEC 61400-2) when connected to either the electric power network or a battery bank.”
*Description from the IEC Website.