New England’s Hydropower Line Is Working, But The Payoff Is Still Unclear
Published · 7 min read
The Big Promise
New England’s new hydropower transmission line was supposed to be a major win.
The project, known as the New England Clean Energy Connect, or NECEC, began carrying electricity from Canada into Maine in January 2026. Supporters saw it as a clean-energy breakthrough. The line was built to bring Canadian hydropower from Hydro-Québec into New England, with Massachusetts as the main customer.
The idea was simple: New England needs cleaner power. Massachusetts needs more renewable energy. Quebec has large hydropower resources. Build a transmission line, move the power south, cut fossil fuel use, and help stabilize the grid.
That was the pitch.
Now, after the first several months of operation, the early results are mixed. The line is moving power. It has shown real potential. But it has not yet delivered the clear jump in renewable electricity that many expected.
That does not mean the project has failed.
It means the hard part is now visible.
What The Line Was Built To Do
NECEC comes from a 2016 Massachusetts energy law. The state required utilities to procure 1.2 gigawatts of additional renewable energy, along with a major offshore wind target.
Massachusetts later contracted with Hydro-Québec for 9.55 terawatt-hours of hydropower each year. That is a big number. Canary Media reported that it is equal to roughly 20% of Massachusetts’ annual electricity demand.
For a state trying to cut emissions, that kind of clean electricity matters.
New England’s grid still depends heavily on natural gas. Gas plants often set prices. They also create emissions. Imported hydropower offers a different kind of resource. It can run when solar is down. It can support the grid during tight periods. It can help balance wind and solar if managed well.
That is why the line matters beyond Massachusetts.
Transmission is the quiet infrastructure behind the energy transition. You can build clean power, but if you cannot move it, you do not get the benefit.
A Rough Start
The first months have not been smooth.
Canary Media reported that NECEC had roughly 27 days when no power traveled over the line. Some outages were short. One stretch lasted nearly two weeks at the end of May and beginning of June. Hydro-Québec said one recent outage was caused by technical difficulties and described the early phase as a period of optimization and fine-tuning.
That is not shocking for new infrastructure. Big transmission projects can need adjustments after they go live. Still, outages matter because the project was sold as a major clean-energy source.
Through the end of April, Hydro-Québec exported about 2.4 terawatt-hours of power over NECEC. That shows the line is not symbolic. It is working. Electricity is moving.
But the bigger question is whether New England is getting more total clean electricity than before.
That answer is less clear.
The Net Flow Problem
Before NECEC, New England already imported hydropower from Quebec through another transmission route called Phase 2, which runs into central Massachusetts.
That older line used to carry large amounts of electricity. In 2019, more than 12 terawatt-hours flowed into New England over Phase 2. But in recent years, Hydro-Québec has sent less power south on that route.
Canary Media reported that through the end of April 2026, just over half a terawatt-hour had moved south over Phase 2. At the same time, NECEC carried new power into Maine.
That creates the core question: is NECEC adding clean power, or is it mainly giving existing hydropower a different path?
Critics say early numbers suggest the total increase is small. If current trends continue, New England could receive less hydropower this year over two lines than it received over one line in some earlier years.
That is the issue.
A new wire is only useful if it brings new clean supply, not just rerouted supply.
Why Quebec’s Drought Matters
The slowdown appears tied partly to drought conditions in Quebec.
Hydropower depends on water. Quebec has large reservoirs, but those reservoirs still depend on weather. When conditions are dry, Hydro-Québec must manage supply carefully. Its first obligation is to serve domestic customers in Canada.
That can limit exports.
The situation gets more complicated because electricity can flow both ways. Canary Media reported that Quebec has started importing power over the older Phase 2 line, a rare event before 2025. In the first four months of 2026, more than 500 gigawatt-hours moved into Canada over that route.
That means New England may receive hydropower through NECEC while also sending electricity north over another line.
Because New England still burns a lot of natural gas, some of that exported power may come from fossil fuel generation.
That is the uncomfortable part.
The line can help. But if hydropower supply is tight and gas plants are still filling gaps, the clean-energy benefit becomes more complicated.
The Financial Risk Looks Limited
For Massachusetts customers, the financial risk may be more controlled than the physical power-flow risk.
Canary Media reported that the contract includes provisions requiring Hydro-Québec to compensate utilities if it fails to deliver as required. Joseph LaRusso of the Acadia Center said Hydro-Québec would be responsible for making electric utilities whole for replacement power costs if imports are curtailed.
That matters for ratepayers.
If the line underdelivers, customers should not automatically be left paying twice. The contract appears to include protection.
But financial protection is not the same as climate progress.
Massachusetts did not pursue this project only to manage bills. It pursued it to bring more clean electricity onto the grid.
That is still the test.
The Line Has Shown Real Potential
The story is not all negative.
There have been moments when NECEC showed what it can do. Canary Media pointed to May 16, when the line ran strongly while solar power reduced regional demand. Natural gas plants were running at low levels. Much of the region’s power was headed toward New York.
For a short period, New England had enough nonfossil resources that the grid operator could have theoretically turned off gas plants.
That is the kind of moment clean-energy planners want to see more often.
It shows what a future grid could look like:
- Solar lowers daytime demand
- Hydropower provides steady clean electricity
- Transmission moves power where it is needed
- Natural gas runs less often
- Regional sharing becomes more valuable
That is the upside.
NECEC may not be delivering a clean win every day yet. But it has shown flashes of the system New England is trying to build.
The Bigger Lesson
This project shows a hard truth about renewable energy: building one asset is not enough.
A transmission line matters. But it depends on the power source behind it. Hydropower depends on water. Wind depends on weather. Solar depends on sunlight. Gas depends on fuel markets. A clean grid needs all of these variables managed together.
NECEC is useful infrastructure. But infrastructure does not guarantee supply.
New England needs more transmission. It also needs more renewable generation, more storage, better grid planning, and cleaner backup resources. Imported hydropower can be part of the answer. It cannot be the whole plan.
That is the real takeaway.
The Bottom Line
NECEC is paying off in one clear way: it is moving clean electricity into New England.
But it has not yet proven that it will deliver the full renewable-energy boost supporters promised.
The line has faced outages. Total hydropower imports remain only slightly higher so far. Quebec’s drought conditions have tightened supply. The older Phase 2 line is sending less power south, and sometimes power is flowing back north.
Still, the project has potential. On the right days, it can help New England run with far less fossil fuel. Over the long term, wetter conditions, new Canadian resources, and better regional coordination could improve the picture.
For now, the verdict is simple:
NECEC is working. The full payoff is still waiting to be proven.
