IEEE 1661-2007

1661-2007 is a technical standard for acid batteries used in photovoltaic (PV) hybrid power systems, giving a focused reference for power, energy, and industry applications. It addresses the battery technologies commonly selected to support solar-based hybrid installations, where dependable storage and stable electrical performance are important. By defining a clear framework for these batteries, 1661-2007 helps support consistent engineering decisions, specification review, and procurement for systems that combine renewable generation with auxiliary power sources.

About 1661-2007

This standard sets out requirements or guidance relevant to acid batteries intended for PV hybrid power use, with emphasis on the operating conditions these batteries may face in energy storage service. In a hybrid power system, battery performance can affect charging behavior, backup availability, and overall system reliability. 1661-2007 is therefore useful as a technical document for aligning battery selection and evaluation with the demands of solar-assisted power systems, where long service life and predictable behavior are typically important.

Where is 1661-2007 used?

1661-2007 is commonly relevant in PV hybrid installations that use acid batteries for energy buffering, backup supply, or load support. This may include remote power systems, renewable-plus-diesel configurations, telecommunications sites, and other off-grid or weak-grid applications where solar generation is paired with storage. The standard can also be useful for engineers, integrators, and buyers comparing battery options for hybrid power equipment, especially when consistent technical requirements are needed across design and installation workflows.

Importance in practice

In practice, 1661-2007 supports better control over battery-related decisions in photovoltaic hybrid systems. Clear requirements can help reduce compatibility issues, improve procurement comparisons, and support testing or acceptance checks for installed equipment. For systems that must operate reliably with intermittent solar input, a defined standard helps limit design uncertainty and can contribute to safer, more consistent performance. For organizations working with acid batteries in power applications, 1661-2007 is a useful reference for compliance and risk reduction.

• Acid batteries for PV hybrid systems
• Energy storage and backup support
• Power-system specification reference
• Performance and reliability alignment
• Procurement and acceptance review