Historical UI Load Data

Load Data Updated for the Oct 14, 2026 SS LRS RFP

• ISO Peak Contribution reported values SS and LRS 2007-2026 (updated 8/18/2026)
• UI Customer Counts by Rate Class and Supply Type through June 2026 (updated 09/08/2026)
• UI Standard Service Load Asset 10394 ISO upload data (initial) through June 2026 (updated 09/08/2026)
• UI Standard Service Load Asset 10394 ISO upload data (reconciliation) through May 2026 (updated 09/08/2026)
• UI Standard Service Segment Data - (initial) 2017 through June 2026 (updated 09/08/2026)
• UI Standard Service Segment Data - (reconciliation) through May 2026 (updated 09/08/2026)
• UI LRS Load Asset 12080 ISO Upload Data (initial) through May 2026 (updated 09/08/2026)
• UI LRS Load Asset 12080 ISO Upload Data (reconciliation) through May 2026 (updated 09/08/2026)
• Migration Percentage by Supply Type and Segment by Month for – May 2026 (updated 09/08/2026)

Historical Load Data

• UI Hourly Historical Load by Rate Segment 01/26 to 06/26
• UI Hourly Historical Load by Rate Segment 01/26 to 03/26
• UI Hourly Historical Load by Rate Segment 01/25 to 12/25
• UI Hourly Historical Load by Rate Segment 01/24 to 12/24
• UI Hourly Historical Load by Rate Segment 01/23 to 12/23
• UI Hourly Historical Load by Rate Segment 01/22 to 12/22
• UI Hourly Historical Load by Rate Segment 01/21 to 12/21
• UI Hourly Historical Load by Rate Segment 01/20 to 12/20
• UI Hourly Historical Load by Rate Segment 01/19 to 12/19
• UI Hourly Historical Load by Rate Segment 01/18 to 12/18
• UI Hourly Historical Load by Rate Segment 01/17 to 12/17
• UI Hourly Historical Load by Rate Segment 01/16 to 12/16
• UI Hourly Historical Load by Rate Segment 01/15 to 12/15
• UI Hourly Historical Load by Rate Segment 01/14 to 12/14
• UI Hourly Historical Load by Rate Segment 01/13 to 12/13
• UI Hourly Historical Load by Rate Segment 01/12 to 12/12
• UI Hourly Historical Load by Rate Segment 01/11 to 12/11
• UI Hourly Historical Load by Rate Segment 01/10 to 12/10
• UI Hourly Historical Load by Rate Segment 01/09 to 12/09
• UI Hourly Historical Load by Rate Segment 01/08 to 12/08
• UI Hourly Historical Load by Rate Segment 01/07 to 12/07
• UI Hourly Historical Load by Rate Segment 01/06 to 12/06
• UI Hourly Historical Load by Rate Segment 01/05 to 12/05
• UI Hourly Historical Load by Rate Segment 01/04 to 12/04
• UI Hourly Historical Load by Rate Segment 01/03 to 12/03
• UI rate to segment to customer class lookup table