BESS Performance KPIs
Guides & Reports

The Essential Guide to BESS Performance KPIs

May 28, 2025

This guide introduces the most important Key Performance Indicators (KPIs) in BESS operations, what they tell you, and how to use them in practice.

BESS Performance KPIs
from TWAICE
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Understanding What BESS Metrics to Track and Why

Battery Energy Storage Systems (BESS) represent a major source of commercial value, but unlocking that value depends heavily on how they're operated. For new operators stepping into the world of BESS, knowing which metrics to track is essential to ensure safety, efficiency, and a solid return on investment.

Here is what the guide covers:

Operational Performance

  • State of Health (SoH)
  • Round-Trip Efficiency
  • Energy Throughput
  • Equivalent Full Cycles
  • Availability, Usable & Recoverable Energy
  • Imbalances

Warranty

  • Cycles (Penalty & Warranty-Related)
  • Depth of Discharge Profile
  • State of Charge Range Adherence
  • State of Health (SoH)

Safety

  • DC Resistance
  • Temperature Anomalies
  • Voltage (Spread) Anomalies
  • Self-Discharge
  • Deep Discharge or Overcharge
  • Weak Cells

Market & Financial

  • Revenue per MWh
  • Power Price per MW or MWh
Download the guide here:
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