Potential Constrained Areas
Under the Market Rules (Chapter 7, Section 22.10), the IESO is provided discretion to designate one or more areas of the IESO-controlled grid as potential constrained area (PCA). Market Manual 14.1, Section 2.1 further specifies the process under which the IESO may designate PCAs.
There are currently no PCA designations in effect.
Preliminary Analysis of Potential Constrained Areas (PCAs)
The IESO has performed a preliminary analysis of Potential Constrained Areas (PCAs) based on historical constraint data observed after the first three months of the new market launch. This information is made available as per the implementation plan. These PCAs are not an official designation and are posted below for informational purposes only. The official PCA designations will be made later this year.
|
PCA name |
Element name and type |
Publication date |
PCA start date |
PCA end date |
|---|---|---|---|---|
|
CA_TWM_202508 |
Interface: TWM Resources: ATIKOKAN-LT.G1 EARFALLS-LT.AG1234 MANITOUFALLS-LT.AG12345 WHITEDOG-LT.AG123 |
August 18, 2025 |
N/A |
N/A |
|
CA_BLIP_202508 |
Interface: BLIP Resources: BELLERVRWF-LT.AG_T1 BRIGHTONCGS-LT.G1A DILLON-LT.AG_T1 EASTLAKESCWF-LT.AG_T1 EASTWCGS-LT.G1 EASTWCGS-LT.G2 ERIEAU-LT.AG_T1 GOSFIELD-LT.AG_T1 LANDONWF-LT.AG_T1 NELSONCHP2-LT.TG NKENT1WF-LT.AG_T1 PAROCHES-LT.AG_T1 PTBURWELL-LT.AG1 RAILBEDWF-LT.AG_SR SILVERCRKSF-LT.AG_T1 SPENCECGS-LT.AG_T1 STCLAIRCGS-LT.AG_T3 STCLAIRCGS-LT.AG_T4 TASARNIA-LT.G861 TASARNIA-LT.G871 TASARNIA-LT.G881 TASARNIA-LT.G891 TAWINDSOR-LT.AG12 WALKERBESS4-LT.BATT_TG WALKERBESS5-LT.BATT_TG WALKERBESS6-LT.BATT_TG WINDSORSF-LT.AG_T1 |
August 18, 2025 |
N/A |
N/A |