Download WESM Data

Overview

Use the Files Downloader tab to download WESM market data published by IEMOP. For an orientation to the tab, see Files Downloader Overview; for the step-by-step download procedure, see Manual Download.

What It Is

The Files Downloader tab provides access to 21 WESM file types across four categories — RTD (7), DAP (5), WAP (5), and OTHER (4) — published by IEMOP. No authentication is required; the earliest available data is 2024-08-13. Open the tab with Ctrl+6.

When to Use It

Download WESM data before running a historical or backcasting simulation that requires market-period inputs. For recurring downloads on a schedule, see Scheduled Download (desktop build only — the scheduler is not available in the web build).