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BESS Custom Bids

This section covers how to create custom bids for Battery Energy Storage Systems (BESS) and simulate it.

Bidding and Dispatch Behavior​

Bid creation and editing for Battery Energy Storage Systems (BESS) are performed using iBidEzy. This tool allows users to manage the dual nature of storage—acting as both a generator (Supply) and a load (Demand).

Market Rules for Storage​

  • Supply Bid: The unit discharges if the market price is above the bid price.
  • Demand Bid: The unit charges if the market price is below the bid price.
  • Strategic Charging: To ensure a battery charges regardless of price (e.g., to capture specific solar generation), one can set a high demand bid price.

Step-by-Step BESS Simulation​

1

Storages File (Storages.csv)​

Define the high-level details of the new BESS. This file is located at "C:\IENERGY\WESM25XX\Databases".

  • Key Parameters: ID, Region, Maximum and Minimum Capacity, and Starting Storage Percentage.

Read more about Storages.csv here.

2

Sites File (Sites.csv)​

Define the specific site details and link them to the main storage ID. This file is located in the same Databases folder.

  • Key Parameters: Site ID, Region, Costs, Efficiency, and the associated StorID.

Read more about Sites.csv here.

3

Units File (Units.csv)​

Define the individual battery units and link them to their respective site. This file is also located in the Databases folder.

  • Key Parameters: Unit ID, Region, Costs, Efficiency, Maximum/Minimum Capacity, and the associated SiteID.
note

All other parameters should be kept identical to the template.

Read more about Units.csv here.