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<DocHeader>
<DocTitle>Pre-auction Report for Short Term Transmission Rights</DocTitle>
<DocRevision>1</DocRevision>
<DocConfidentiality>
<DocConfClass>PUB</DocConfClass>
</DocConfidentiality>
<CreatedAt>2025-09-09T09:16:47</CreatedAt>
</DocHeader>
<DocBody>
<ValidityPeriodStart>2025-10-01</ValidityPeriodStart>
<ValidityPeriodEnd>2025-10-31</ValidityPeriodEnd>
<PublishDate>2025-09-09</PublishDate>
<OfferMessage>The actual number of Transmission Rights available for each path in ST_20251001 is equal to the Maximum Transmission Rights offered for this period (Total TR Available (MW)) less all Transmission Rights awarded in previous auctions covering the same time period (Total TR Already Sold (MW)).&lt;br />&lt;br />Further information regarding Forecast Total Transfer Capability, Financial Upper Limit, and TR offered for this auction can be found in the link below:&lt;br />&lt;br />https://www.ieso.ca/-/media/Files/IESO/Document-Library/Renewed-Market-Rules-and-Manuals/market-manuals/market-operations/ieso-mo-transmission-rights-auction.pdf &lt;br />&lt;br />*Refer to Market Manual 0.4.4, Section 2.2.5 on how the IESO determines TRs for short term auctions.</OfferMessage>
<ReportLineItem>
<PathName>MAN-ON</PathName>
<ExpectedATC>75</ExpectedATC>
<FinancialUpperLimit>5</FinancialUpperLimit>
<TotalTRAvailable>5</TotalTRAvailable>
<TotalTRSold>5</TotalTRSold>
<TROffered>0</TROffered>
<OutageIds>1-00254393</OutageIds>
<Notes>K21W Outage(s); Operational Constraint* Applied; FUL increased 4%</Notes>
</ReportLineItem>
<ReportLineItem>
<PathName>MICH-ON</PathName>
<ExpectedATC>900</ExpectedATC>
<FinancialUpperLimit>550</FinancialUpperLimit>
<TotalTRAvailable>550</TotalTRAvailable>
<TotalTRSold>84</TotalTRSold>
<TROffered>466</TROffered>
<OutageIds>1-00266002; 1-00280540</OutageIds>
<Notes>L4D, LAMBTON KL4, LAMBTON PL4, LAMBTON PS4 Outage(s); FUL decreased 4%</Notes>
</ReportLineItem>
<ReportLineItem>
<PathName>MIN-ON</PathName>
<ExpectedATC>75</ExpectedATC>
<FinancialUpperLimit>2</FinancialUpperLimit>
<TotalTRAvailable>2</TotalTRAvailable>
<TotalTRSold>0</TotalTRSold>
<TROffered>2</TROffered>
<OutageIds/>
<Notes>Operational Constraint* Applied; FUL increased 4%</Notes>
</ReportLineItem>
<ReportLineItem>
<PathName>NY-ON</PathName>
<ExpectedATC>1000</ExpectedATC>
<FinancialUpperLimit>299</FinancialUpperLimit>
<TotalTRAvailable>299</TotalTRAvailable>
<TotalTRSold>81</TotalTRSold>
<TROffered>218</TROffered>
<OutageIds>1-00259302</OutageIds>
<Notes>Beck 2 D1 Bus, K1L25 Outage(s); FUL decreased 4%</Notes>
</ReportLineItem>
<ReportLineItem>
<PathName>ON-MAN</PathName>
<ExpectedATC>75</ExpectedATC>
<FinancialUpperLimit>3</FinancialUpperLimit>
<TotalTRAvailable>3</TotalTRAvailable>
<TotalTRSold>4</TotalTRSold>
<TROffered>0</TROffered>
<OutageIds>1-00254393</OutageIds>
<Notes>K21W Outage(s); Operational Constraint* Applied; FUL decreased 4%</Notes>
</ReportLineItem>
<ReportLineItem>
<PathName>ON-MICH</PathName>
<ExpectedATC>800</ExpectedATC>
<FinancialUpperLimit>1450</FinancialUpperLimit>
<TotalTRAvailable>800</TotalTRAvailable>
<TotalTRSold>91</TotalTRSold>
<TROffered>709</TROffered>
<OutageIds>1-00266002; 1-00280540</OutageIds>
<Notes>L4D, LAMBTON KL4, LAMBTON PL4, LAMBTON PS4 Outage(s); Operational Constraint* Applied</Notes>
</ReportLineItem>
<ReportLineItem>
<PathName>ON-MIN</PathName>
<ExpectedATC>0</ExpectedATC>
<FinancialUpperLimit>3</FinancialUpperLimit>
<TotalTRAvailable>0</TotalTRAvailable>
<TotalTRSold>0</TotalTRSold>
<TROffered>0</TROffered>
<OutageIds>1-00291300</OutageIds>
<Notes>M602F Outage(s); FUL decreased 4%</Notes>
</ReportLineItem>
<ReportLineItem>
<PathName>ON-NY</PathName>
<ExpectedATC>800</ExpectedATC>
<FinancialUpperLimit>1700</FinancialUpperLimit>
<TotalTRAvailable>800</TotalTRAvailable>
<TotalTRSold>106</TotalTRSold>
<TROffered>694</TROffered>
<OutageIds>1-00259302</OutageIds>
<Notes>Beck 2 D1 Bus, K1L25 Outage(s)</Notes>
</ReportLineItem>
<ReportLineItem>
<PathName>ON-QD5A</PathName>
<ExpectedATC>190</ExpectedATC>
<FinancialUpperLimit>74</FinancialUpperLimit>
<TotalTRAvailable>74</TotalTRAvailable>
<TotalTRSold>12</TotalTRSold>
<TROffered>62</TROffered>
<OutageIds/>
<Notes>FUL decreased 4%</Notes>
</ReportLineItem>
<ReportLineItem>
<PathName>ON-QH4Z</PathName>
<ExpectedATC>95</ExpectedATC>
<FinancialUpperLimit>92</FinancialUpperLimit>
<TotalTRAvailable>92</TotalTRAvailable>
<TotalTRSold>6</TotalTRSold>
<TROffered>86</TROffered>
<OutageIds/>
<Notes>FUL increased 4%</Notes>
</ReportLineItem>
<ReportLineItem>
<PathName>ON-QOUTA</PathName>
<ExpectedATC>615</ExpectedATC>
<FinancialUpperLimit>1230</FinancialUpperLimit>
<TotalTRAvailable>615</TotalTRAvailable>
<TotalTRSold>77</TotalTRSold>
<TROffered>538</TROffered>
<OutageIds/>
<Notes>Operational Constraint* Applied</Notes>
</ReportLineItem>
<ReportLineItem>
<PathName>QBEAU-ON</PathName>
<ExpectedATC>390</ExpectedATC>
<FinancialUpperLimit>13</FinancialUpperLimit>
<TotalTRAvailable>13</TotalTRAvailable>
<TotalTRSold>14</TotalTRSold>
<TROffered>0</TROffered>
<OutageIds/>
<Notes>FUL decreased 4%</Notes>
</ReportLineItem>
<ReportLineItem>
<PathName>QD4Z-ON</PathName>
<ExpectedATC>65</ExpectedATC>
<FinancialUpperLimit>1</FinancialUpperLimit>
<TotalTRAvailable>1</TotalTRAvailable>
<TotalTRSold>0</TotalTRSold>
<TROffered>1</TROffered>
<OutageIds>1-00270836</OutageIds>
<Notes>D3K Outage(s); FUL decreased 4%</Notes>
</ReportLineItem>
<ReportLineItem>
<PathName>QD5A-ON</PathName>
<ExpectedATC>240</ExpectedATC>
<FinancialUpperLimit>6</FinancialUpperLimit>
<TotalTRAvailable>6</TotalTRAvailable>
<TotalTRSold>7</TotalTRSold>
<TROffered>0</TROffered>
<OutageIds/>
<Notes>FUL decreased 4%</Notes>
</ReportLineItem>
<ReportLineItem>
<PathName>QOUTA-ON</PathName>
<ExpectedATC>605</ExpectedATC>
<FinancialUpperLimit>1230</FinancialUpperLimit>
<TotalTRAvailable>605</TotalTRAvailable>
<TotalTRSold>77</TotalTRSold>
<TROffered>528</TROffered>
<OutageIds>1-00288693</OutageIds>
<Notes>Hawthorne T5 Outage(s)</Notes>
</ReportLineItem>
<ReportLineItem>
<PathName>QP33C-ON</PathName>
<ExpectedATC>190</ExpectedATC>
<FinancialUpperLimit>290</FinancialUpperLimit>
<TotalTRAvailable>190</TotalTRAvailable>
<TotalTRSold>18</TotalTRSold>
<TROffered>172</TROffered>
<OutageIds>1-00279312</OutageIds>
<Notes>T22C Outage(s)</Notes>
</ReportLineItem>
<ReportLineItem>
<PathName>QX2Y-ON</PathName>
<ExpectedATC>65</ExpectedATC>
<FinancialUpperLimit>2</FinancialUpperLimit>
<TotalTRAvailable>2</TotalTRAvailable>
<TotalTRSold>0</TotalTRSold>
<TROffered>2</TROffered>
<OutageIds/>
<Notes>FUL decreased 4%</Notes>
</ReportLineItem>
<ReportLineItem>
<PathName>MANSK-ON</PathName>
<ExpectedATC>0</ExpectedATC>
<FinancialUpperLimit>0</FinancialUpperLimit>
<TotalTRAvailable>0</TotalTRAvailable>
<TotalTRSold>0</TotalTRSold>
<TROffered>0</TROffered>
<OutageIds/>
<Notes>Financial Upper Limit = 0 MW</Notes>
</ReportLineItem>
<ReportLineItem>
<PathName>ON-MANSK</PathName>
<ExpectedATC>0</ExpectedATC>
<FinancialUpperLimit>0</FinancialUpperLimit>
<TotalTRAvailable>0</TotalTRAvailable>
<TotalTRSold>0</TotalTRSold>
<TROffered>0</TROffered>
<OutageIds/>
<Notes>Financial Upper Limit = 0 MW</Notes>
</ReportLineItem>
<ReportLineItem>
<PathName>ON-QBEAU</PathName>
<ExpectedATC>0</ExpectedATC>
<FinancialUpperLimit>0</FinancialUpperLimit>
<TotalTRAvailable>0</TotalTRAvailable>
<TotalTRSold>0</TotalTRSold>
<TROffered>0</TROffered>
<OutageIds/>
<Notes>Financial Upper Limit = 0 MW</Notes>
</ReportLineItem>
<ReportLineItem>
<PathName>ON-QD4Z</PathName>
<ExpectedATC>0</ExpectedATC>
<FinancialUpperLimit>0</FinancialUpperLimit>
<TotalTRAvailable>0</TotalTRAvailable>
<TotalTRSold>0</TotalTRSold>
<TROffered>0</TROffered>
<OutageIds/>
<Notes>Financial Upper Limit = 0 MW</Notes>
</ReportLineItem>
<ReportLineItem>
<PathName>ON-QH9A</PathName>
<ExpectedATC>0</ExpectedATC>
<FinancialUpperLimit>0</FinancialUpperLimit>
<TotalTRAvailable>0</TotalTRAvailable>
<TotalTRSold>0</TotalTRSold>
<TROffered>0</TROffered>
<OutageIds/>
<Notes>Financial Upper Limit = 0 MW</Notes>
</ReportLineItem>
<ReportLineItem>
<PathName>ON-QP33C</PathName>
<ExpectedATC>0</ExpectedATC>
<FinancialUpperLimit>0</FinancialUpperLimit>
<TotalTRAvailable>0</TotalTRAvailable>
<TotalTRSold>0</TotalTRSold>
<TROffered>0</TROffered>
<OutageIds/>
<Notes>Financial Upper Limit = 0 MW</Notes>
</ReportLineItem>
<ReportLineItem>
<PathName>ON-QQ4C</PathName>
<ExpectedATC>0</ExpectedATC>
<FinancialUpperLimit>0</FinancialUpperLimit>
<TotalTRAvailable>0</TotalTRAvailable>
<TotalTRSold>0</TotalTRSold>
<TROffered>0</TROffered>
<OutageIds/>
<Notes>Financial Upper Limit = 0 MW</Notes>
</ReportLineItem>
<ReportLineItem>
<PathName>ON-QX2Y</PathName>
<ExpectedATC>0</ExpectedATC>
<FinancialUpperLimit>0</FinancialUpperLimit>
<TotalTRAvailable>0</TotalTRAvailable>
<TotalTRSold>0</TotalTRSold>
<TROffered>0</TROffered>
<OutageIds/>
<Notes>Financial Upper Limit = 0 MW</Notes>
</ReportLineItem>
<ReportLineItem>
<PathName>QH4Z-ON</PathName>
<ExpectedATC>0</ExpectedATC>
<FinancialUpperLimit>0</FinancialUpperLimit>
<TotalTRAvailable>0</TotalTRAvailable>
<TotalTRSold>0</TotalTRSold>
<TROffered>0</TROffered>
<OutageIds/>
<Notes>Financial Upper Limit = 0 MW</Notes>
</ReportLineItem>
<ReportLineItem>
<PathName>QH9A-ON</PathName>
<ExpectedATC>0</ExpectedATC>
<FinancialUpperLimit>0</FinancialUpperLimit>
<TotalTRAvailable>0</TotalTRAvailable>
<TotalTRSold>0</TotalTRSold>
<TROffered>0</TROffered>
<OutageIds/>
<Notes>Financial Upper Limit = 0 MW</Notes>
</ReportLineItem>
<ReportLineItem>
<PathName>QQ4C-ON</PathName>
<ExpectedATC>0</ExpectedATC>
<FinancialUpperLimit>0</FinancialUpperLimit>
<TotalTRAvailable>0</TotalTRAvailable>
<TotalTRSold>0</TotalTRSold>
<TROffered>0</TROffered>
<OutageIds/>
<Notes>Financial Upper Limit = 0 MW</Notes>
</ReportLineItem>
<Rounds>
<RoundMessage>The window for accepting bids in this auction will be from: </RoundMessage>
<Round1>Round 1 2025/09/10 09:00:00 to 2025/09/11 17:00:00</Round1>
</Rounds>
</DocBody>
</Document>
