BESS Engineering

BESS State-of-Health & Degradation

Model battery capacity fade over project life — calendar aging + cycle aging combined. LFP · NMC · NCA · LTO chemistry.

Presets

Battery Parameters

Cell Chemistry

Nominal Capacity

kWh

Rated energy capacity at new condition (100% SOH)

C-Rate 0.25C = 4-hour discharge; 1C = 1-hour discharge

Average Depth of Discharge

80 %

DoD correction: N_eq = cycles × (80%/DoD)^1.5

Operating Temperature

25 °C

Arrhenius temperature correction applied to calendar rate

Annual Full Equivalent Cycles Number of full cycles per year (adjusted for DoD)

Project Life

years

Typical BESS project life: 10–25 years

End-of-Life Threshold

80 %

SOH threshold defining end of useful life (industry standard: 80%)

Cycle Revenue (optional)

$ $/MWh

Revenue per MWh delivered per cycle — enables revenue degradation analysis

Enter battery parameters or select a preset to model SOH degradation over project life.