IESO Holds Firm on Hydro Exclusion, Reserve Price in Long Lead-time RFP
If reduced water results in prolonged periods where hydro projects' production is lower than expected and energy market prices are high, it could result in negative total revenues when considering contract payments and market settlement. As a result, IESO is proposing an approach that reduces hydro suppliers' downside during droughts while reducing their upside when their facilities can produce more than contracted. | IESO
Jan 29, 2026
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IESO officials held firm on excluding hydro redevelopment projects from the ISO’s Long Lead-Time procurement despite objections from potential bidders.



