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Website · About · Legal · Privacy · Changelog · © 2026 Parisi Labs
  1. Home
  2. /Assets
  3. /Interties
  4. /MISO–Ontario
MISO logo

MISO–Ontario

MISO ↔ Ontario · Market seam (every AC tie between two markets)

The ties between Michigan and Ontario across the St. Clair and Detroit rivers.

Now
859 MWOntario → MISO
MISO · as of Sep 25, 11:00 PM CDT
Between
MISO and Ontario
Technology
Market seam (every AC tie between two markets)
Published by
MISO
Open on the map

What it is carrying

Each operator's own reading, turned into a direction. Where both markets publish the tie, the two should agree.

As MISO reports it
859 MW · Ontario → MISO

as of Sep 25, 11:00 PM CDT

Price across the seamReal-time · CDT
Reading prices…

Last 30 days

Hourly flow, signed so that up is power leaving the market.

As MISO reports it-859MW
416-740-1,895Aug 27, 2 PMSep 25, 11 PM

Above zero: MISO → Ontario. Below: the reverse.

Related interties

  • MISO–PJM seam
    MISO ↔ PJM
  • MISO–SPP seam
    MISO ↔ SPP
  • MISO–Manitoba Hydro
    MISO ↔ Manitoba Hydro
Usual direction
Ontario → MISO in 97% of hours

3% out, 97% in, 0% idle across 706 hours

Average
851 MW · Ontario → MISO
When busy
1,476 MW

95th percentile of hourly flow either way

Peak MISO → Ontario
257 MW
Peak Ontario → MISO
1,736 MW
Direction changes
17
The average day
0:006:0012:0018:0023:00
Mean flow by the market's local hour. Up: MISO → Ontario. Down: Ontario → MISO.