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Western Tie Schedules (5-minute)

Five-minute scheduled market transfers between Western balancing areas.

Interchange dataCAISO market
Query with the agent
Native record
directed BAA tie x 5-minute scheduled interval
5-minute publication cadence
Evidence
Observed market data
Published observations from the named source
Time basis
Interval-start records
UTC · event_time

Overview

value_mw is a schedule with direction preserved by from_baa and to_baa; it is not metered physical flow and is not an interface transfer limit.

Query contract

Preserve one canonical row per (event_time, tie_name, from_baa, to_baa) before aggregating.

Analysis rules

  • Group only after preserving the declared grain: event_time, tie_name, from_baa, to_baa.

Interpretation

  • value_mw is a scheduled market transfer, not metered physical interchange and not a transfer limit.
  • Preserve from_baa, to_baa, and the published sign; do not infer physical flow direction from the tie name alone.

Access

Query from your own tools

Use the guarded HTTP endpoint directly, or connect an MCP client and load the dataset contract with describe_data before calling query_data.

CAISO MCP API reference
HTTP endpoint
POST /api/v1/datasets/caiso_tie_flows_rt_5m/query

Schema6

Column
Type
event_timeDateTime64(6, 'UTC')
tie_nameLowCardinality(String)
from_baaLowCardinality(String)
to_baaLowCardinality(String)
value_mwNullable(Float64)
ingested_atDateTime64(6, 'UTC')

Sample data

event_timetie_namefrom_baato_baavalue_mwingested_at
2026-09-04 01:45:00.000000YTPPACENWMT1002026-09-04 01:50:19.998205
2026-09-04 01:45:00.000000YTPNWMTPACE02026-09-04 01:50:19.998205
2026-09-04 01:45:00.000000WWNG500SRP_WALCWALCSRP02026-09-04 01:50:19.998205
2026-09-04 01:45:00.000000WWNG500SRP_WALCSRPWALC02026-09-04 01:50:19.998205
2026-09-04 01:45:00.000000WWNG230SRP_WALCWALCSRP02026-09-04 01:50:19.998205
2026-09-04 01:45:00.000000WWNG230SRP_WALCSRPWALC02026-09-04 01:50:19.998205
2026-09-04 01:45:00.000000WM345_EPEPNMEPE02026-09-04 01:50:19.998205
2026-09-04 01:45:00.000000WM345_EPEEPEPNM862026-09-04 01:50:19.998205
2026-09-04 01:45:00.000000WINCHESTR345WALCTEPC02026-09-04 01:50:19.998205
2026-09-04 01:45:00.000000WINCHESTR345TEPCWALC02026-09-04 01:50:19.998205
2026-09-04 01:45:00.000000WILLOWBEACHCISOAZPS02026-09-04 01:50:19.998205
2026-09-04 01:45:00.000000WILLOWBEACHAZPSCISO02026-09-04 01:50:19.998205
2026-09-04 01:45:00.000000WESTWING500_WALCWALCAZPS02026-09-04 01:50:19.998205
2026-09-04 01:45:00.000000WESTWING500_WALCAZPSWALC02026-09-04 01:50:19.998205
2026-09-04 01:45:00.000000WESTWING500_TEPCTEPCAZPS02026-09-04 01:50:19.998205
2026-09-04 01:45:00.000000WESTWING500_TEPCAZPSTEPC02026-09-04 01:50:19.998205
2026-09-04 01:45:00.000000WESTWING500_SRPSRPAZPS02026-09-04 01:50:19.998205
2026-09-04 01:45:00.000000WESTWING500_SRPAZPSSRP02026-09-04 01:50:19.998205
2026-09-04 01:45:00.000000WESTWING230_WALCWALCAZPS02026-09-04 01:50:19.998205
2026-09-04 01:45:00.000000WESTWING230_WALCAZPSWALC02026-09-04 01:50:19.998205
2026-09-04 01:45:00.000000WESTWING230_SRPSRPAZPS02026-09-04 01:50:19.998205
2026-09-04 01:45:00.000000WESTWING230_SRPAZPSSRP02026-09-04 01:50:19.998205
2026-09-04 01:45:00.000000WESTLYTSLACISOBANC02026-09-04 01:50:19.998205
2026-09-04 01:45:00.000000WESTLYTSLABANCCISO02026-09-04 01:50:19.998205
2026-09-04 01:45:00.000000WESTLYFINKTIDCCISO02026-09-04 01:50:19.998205

Coverage

100.0% complete0 gap days72 days with data
Show coverage history ▾
Coverage: 100.0%Days with data: 72Gaps: 0
2026
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