MONTRÉAL — Extreme cold weather has prompted Hydro-Québec to halt its energy exports to Massachusetts, just one week after the inauguration of its new transmission line. This decision underscores the impact of harsh winter conditions on energy supply and demand in the region.

Both Hydro-Québec and the Massachusetts Executive Office of Energy and Environmental Affairs confirmed the suspension, which was initially reported by the specialized media outlet E&E News. The action was taken in response to the increased demand for electricity in Quebec caused by a polar vortex that enveloped the area last weekend.

The situation has been exacerbated by the current state of Hydro-Québec's water reservoirs, which are lower than usual due to a prolonged three-year drought. This reduction in water levels significantly affects the company's ability to generate hydroelectric power, a vital resource for both Quebec customers and export commitments.

Hydro-Québec announced that it suspended energy deliveries to Massachusetts over the weekend, as well as for an additional hour on the following Tuesday morning. The company emphasized that the suspension was necessary to prioritize the energy needs of its local customers during this period of extreme weather.

In response to these developments, the Massachusetts Executive Office of Energy and Environmental Affairs has acknowledged the challenges faced by Hydro-Québec. They expressed awareness of the current constraints impacting energy availability in Quebec due to the severe cold conditions.

This incident highlights the complex relationship between energy supply and demand, particularly during adverse weather events. It also raises questions about the reliability of energy exports in the face of local needs and environmental factors. As colder weather continues, Hydro-Québec's ability to balance its commitments to both its residents and the export market will be critical.

The report indicates that Hydro-Québec's decision is not only a reflection of immediate weather-related challenges but also raises concerns about long-term energy planning in the context of climate variability. The ongoing drought and changing weather patterns may necessitate adjustments in how energy resources are managed and allocated in the future.

As the winter unfolds, both Hydro-Québec and Massachusetts officials will be monitoring the situation closely, seeking solutions that ensure energy reliability while addressing the pressing needs of local residents during this challenging season.