Fluence Energy, Inc. announced that an independent review by DNV confirmed 99.3% availability across its reviewed operating battery energy storage fleets of 50 MW and above. The assessment validated Fluence's internal findings of 98.7% MW-weighted availability across the reviewed global fleet, providing a benchmark for performance in the energy storage industry.

DNV reviewed Fluence-provided fleet-level availability data, calculation methodologies incorporated into contracts, and operational data for select projects. The study assessed fleet-level availability using operational data, applied a consistent methodology across markets and operating environments, and included independent evaluation of underlying assumptions, methodology, and results.

Industry Performance Context

Across the energy storage industry, availability figures of 95% to 98% are often promoted. However, definitions and measurement approaches vary, which can make it difficult for customers, investors, and asset owners to compare performance across suppliers. Customers experience performance in practical terms by a system's operational availability to deliver energy on demand.

Commercial Impact

The commercial impact of availability can be significant. Even small differences in availability can affect project revenue, operating costs, and long-term asset value, particularly as storage assets operate across different markets, duty cycles, and conditions. The review represents one of the industry's more comprehensive independent assessments of fleet-level battery storage availability.

Key Metrics

As power demand grows from electrification, industrial load, and AI data centers, independently reviewed operating data can help customers distinguish which storage assets are built to deliver dependable, flexible capacity at scale.