Augmentation is the process of supplementing Battery Energy Storage System (BESS) capacity ––“upsizing” the capacity at the outset, adding battery capacity to the project site to supplement battery capacity losses and integrating new capacity.Every successful project needs an energy capacity degradation plan. The energy capacity of batteries inevitably decreases with time and usage. There are several approaches for mitigating battery degradation in an augmentation plan. This allows the nominal capacity of the BESS to remain.
HOMER Front models augmentation as if the whole BESS system were ‘like new’ after the augmentation event.
Augmentation ($/unit)
This field is cost per kWh storage capacity that incurs when the battery reaches the augmentation degradation limit.
Augmentation Price Decline
Augmentation price decline captures the changing cost of storage in the future. The ‘%/year’ price decline input allows you to specify a year-over-year change in the price for augmenting, starting with the price specified in Augmentation ($/unit).
The ‘Escalation by year’ option allows the user to specify a price change for each year, on Jan 1st of the specified year. The Augmentation price will be interpolated based on what day of the year the augmentation takes place.
Augmentation degradation limit
This limit refers to the point at which the battery will be augmented. Ex: If you set your limit to 10%, the battery will be augmented when it reaches 90% capacity.
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