Recently, the American Renewable Energy Standards and Certification Association (ARESCA) announced a major initiative: it will formally adopt seven international wind energy standards developed by the International Electrotechnical Commission's Technical Committee on Wind Power Generation Systems (IEC/TC 88) as national standards for the U.S. wind energy sector. This action not only ends the previous situation of parallel standards but also accelerates the global wind energy industry's progress toward unified standards.

The seven standards now in effect comprehensively cover core aspects of the entire wind power life-cycle, precisely addressing key industry needs.

ARESCA 61400-4-1-202x (Transmission System Reliability): adopts IEC 61400-4-1 ED1:202x to conduct reliability assessments on transmission system components of wind turbines, thereby establishing a solid foundation for stable equipment operation.

ARESCA 61400-24-202x (Lightning Protection): Adheres to IEC 61400-24 ED3:202x, specifying technical requirements for lightning protection in wind power equipment to safeguard against extreme weather threats to turbine safety.

ARESCA 61400-25-2-202x (Monitoring and Control Communication): adopts IEC 61400-25-2 ED3:202x to establish a wind farm monitoring information model, enhancing the intelligence level of operation and maintenance management.

ARESCA 61400-27-3-202x (Frequency Domain Model for Harmonic Propagation Studies): Based on IEC 61400-27-3 ED1:202x, this standard focuses on harmonic propagation analysis in wind power systems. It establishes a frequency domain modeling framework covering wind turbines, collection lines, converters, and grid interface.

ARESCA 61400-27-4-202x (Electromagnetic Transient Modeling): adopts IEC 61400-27-4 ED1:202x to specify the modeling and parameter standards for electromagnetic transient characteristics of wind turbine generators (including the complete unit, generator, converter, and control system).

ARESCA 61400-28-2-202x (Decommissioning and Recycling Preparation): Adopting IEC 61400-28-2 ED1:202x, this standard focuses on green and low-carbon development, specifying the environmental treatment procedures for wind power equipment after decommissioning.

ARESCA 61400-50-5-202x (Wind Energy Measurement Technology): adopts IEC 61400-50-5 ED1:202x to establish application standards for scanning Doppler lidar, enhancing the accuracy of wind energy resource assessment.

In the global wind power business, standardization has become an unavoidable tendency.  Germany's HKW has been at the forefront of wind turbine bearing improvements for more than a century. Its primary products, such as pitch/yaw bearings and three-row cylindrical main bearings, closely follow strict German criteria in addition to demanding international standards like ISO and DIN. These bearings exactly satisfy the industry's fundamental requirements for dependability and lifespan by providing outstanding performance with high load capacity and extreme environment resistance through a deep integration of material science and production excellence. With their built-in compliance DNA, HKW solutions will strengthen the basis for essential elements in the stable operation and compliant implementation of international wind power projects as U.S. wind energy regulations converge with international standards.