January 2019 cold snap
An extreme cold snap across eastern North America pushed Quebec's grid to its limits. Hydro-Québec reduced exports to the US to keep the province's own lights on, leaving New England utilities scrambling for replacement power.
New England utilities paid higher prices for spot-market power during the cold snap.
The episode highlighted the structural risk of relying on Quebec hydropower during peak winter demand, but no legal action followed.
The 2019 cold snap is the direct precedent for the behavior at issue in the 2026 lawsuit. It shows Hydro-Québec has a pattern of prioritizing domestic reliability over export contracts during extreme cold.
