IEEE 1021-1988 is a technical standard for the utility interconnection of small wind energy conversion systems, addressing how these systems connect to power networks in a controlled and reliable way. It is relevant to utility-facing wind installations where electrical integration, operating behavior, and interface requirements need clear guidance. For engineering teams and purchasers working in power, energy, and industrial applications, this standard helps define expectations for safe and consistent interconnection practices.

Overview of IEEE 1021-1988

This recommended practice focuses on the practical interface between small wind energy conversion systems and utility power systems. IEEE 1021-1988 is intended to support orderly interconnection by outlining considerations that affect system compatibility, performance, and operational coordination. In a utility and distributed generation context, the document is useful for identifying the technical factors that matter when a wind-based source is connected to existing electrical infrastructure. It is an inactive standard, but it remains relevant for legacy references and historical engineering documentation.

Typical use cases

This standard is typically consulted when specifying or reviewing small wind systems intended to operate with a utility connection, including site-based generation for facilities, rural power applications, and pilot installations. It can help guide design review, interconnection planning, and equipment selection where the electrical behavior of the wind system must align with utility requirements. IEEE 1021-1988 may also be used in procurement and compliance checks when documenting how a small wind energy conversion system is expected to interface with distribution equipment.

Why it matters

Interconnection standards matter because they reduce uncertainty at the point where generation equipment meets the utility system. IEEE 1021-1988 supports clearer engineering decisions around interface requirements, which can help improve consistency during design, testing, and installation. For projects involving small wind systems, having a defined technical reference can lower integration risk, support safer utility coordination, and make documentation more useful for review and maintenance. IEEE 1021-1988 is especially valuable where historical or legacy system specifications still need to be understood.

• Small wind energy conversion system interconnection
• Utility compatibility and interface considerations
• Engineering review for power system connection
• Design, testing, and documentation reference
• Legacy technical reference for inactive standard use