The American developers of the Northern Pass project are misleading the public about the project’s most touted environmental benefit (without which they “wouldn’t be doing this”): reducing New England’s greenhouse gas emissions. Presented with clear, unambiguous evidence that the current proposal would not meaningfully reduce emissions and that their public relations campaign is trading in falsehoods, the developers have done nothing to correct the record or provided any substantive response to the evidence.

In mid-February, CLF released a report on the science regarding large-scale hydropower’s emissions of greenhouse gases, the pollutants that are driving climate change. The conclusion: large-scale hydropower projects, especially new facilities, have substantial greenhouse gas emissions that, in their first years of operation, are equivalent to emissions from modern natural gas power plants.

This conclusion means that the proposed Northern Pass project, which would import up to 1,200 megawatts of new Canadian hydropower into New England and displace power from domestic natural gas plants, would not meaningfully reduce greenhouse gas emissions, as the developers are claiming.  CLF’s report also demonstrated that the assumption at the heart of the developers’ claim that the Northern Pass project would reduce emissions by 5 million tons per year – that Canadian hydropower has no greenhouse gas emissions – is unequivocally false.

CLF sent a copy of the hydropower emissions report to Northern Pass Transmission LLC (NPT). In our transmittal letter, we made clear that the science summarized in the report (some of which was included in NPT’s own regulatory filings) clearly contradicted NPT’s marketing claims and urged NPT to:

• correct the regulatory and public record by retracting and withdrawing all NPT prior statements that hydropower results in no emissions of greenhouse gases and that the Project will reduce carbon dioxide emissions by any specific amount, and
• refrain from making any claims regarding carbon dioxide emissions reductions associated with the Project unless and until those reductions are substantiated in a new technical analysis subject to public and permitting agency review.

To date, NPT has taken neither step. The false “no emissions” canard and the unsupported claim of 5 million tons of annual emissions reductions from the project are still prominent fixtures at NPT’s MyNewHampshire.com:

"No greenhouse gases" (source: http://www.northernpass.us/pdf/ads/Jack.pdf)

NPT spokesman Martin Murray did post a non-responsive comment on CLF’s website, to which I responded in detail here. On its own website, NPT then heralded a Hydro-Québec press release responding to the report, and I explained here why the press release neither reflected a close reading of the report nor challenged the report’s fundamental conclusions but, instead, underscored Hydro-Québec’s position that the major promise of new hydropower imports was as a long-term replacement for dirty, costly coal power plants like New Hampshire’s own Merrimack and Schiller Stations – not natural gas.

Where do NPT’s non-responses leave us? Unfortunately, NPT seems poised to continue on with its false and misleading public relations campaign and has shown no interest in an open, honest debate. CLF will continue to use all the tools at our disposal to ensure that the public and decision-makers are fully aware of all the issues associated with the Northern Pass proposal. 

You can support our work by becoming a CLF member and also by telling the permitting agency now reviewing the Northern Pass proposal to consider hydropower’s greenhouse gas emissions – and all the other impacts of Northern Pass power in Canada – as part of the agency’s environmental review – click here to take action.

For more information about Northern Pass, sign-up for our monthly newsletter Northern Pass Wire, visit CLF’s Northern Pass Information Center (http://www.clf.org/northernpass), and take a look at our prior Northern Pass posts on CLF Scoop.

Hydro-Québec hydroelectric projects recently commissioned or under construction (Source: Quebec Ministry of Natural Resources and Wildlife)

Reducing the region’s emissions of greenhouse gases is supposedly the Northern Pass project’s marquee public benefit, its raison d’être as they say in Québec. But would the Northern Pass project do the job?

The answer appears to be: probably not any time soon. Today, CLF is releasing a ground-breaking new technical report regarding the greenhouse gas emissions of Canadian hydropower. The conclusions of the report show that large-scale hydropower, especially new reservoirs, is worse for the climate than Northern Pass’s developers are claiming, with substantial greenhouse gas emissions that are comparable to those of modern natural gas-fired power plants. The current Northern Pass proposal substitutes hydropower for natural gas in New England’s energy mix, meaning that the project won’t reduce emissions by much if any, especially in the near term.

Authored by Synapse Energy Economics, the technical report released today, Hydropower Greenhouse Gas Emissions: State of the Research, is an independent survey of the recent science regarding the greenhouse gas emissions of hydropower. The science is clear that the reservoirs behind hydropower dams emit greenhouse gases, relative to the forests and wetlands they flood (which often take greenhouse gases out of the atmosphere). Overall, reservoirs in Québec emit more greenhouse gases over the course of their lives than renewables like wind, solar, and run of river hydropower.

A crucial finding of the report concerns new reservoirs. In the first several years after a reservoir is dammed, large amounts of newly inundated organic material decompose, emitting carbon dioxide that diffuses through the water into the atmosphere. As a result, a reservoir’s net emissions in its early years are very high – starting out even higher than emissions from a natural gas power plant per unit of power generated. This effect is evident in recent, rigorous analyses by several teams of scientists, based on data collected at Hydro-Québec’s Eastmain 1 reservoir in northern Québec. This reservoir is the very same project that Northeast Utilities’ CFO testified under oath last year would be the primary, if not exclusive, source of Northern Pass’s power. Even when their emissions are projected over their lifetimes, newly flooded Canadian reservoirs may emit nearly two-thirds of the greenhouse gases emitted by natural gas power plants. By contrast, reservoirs emit only about 20% of the greenhouse gases emitted by typical coal-fired power plants.

This conclusion is the death knell for Northern Pass Transmission, LLC’s (NPT) claim that the current Northern Pass proposal would reduce greenhouse gas emissions by up to 5 million tons. We explained the claim’s key flaw – the report on which it is based erroneously assumes that hydropower has no greenhouse gas emissions – back in August. In light of today’s report, CLF is calling on NPT and its partners NU, NSTAR, and PSNH to stop citing that erroneous number and to withdraw all marketing materials for the Northern Pass project that state or imply that Canadian hydropower has no or minimal greenhouse gas emissions. Hydro-Québec is building new hydropower projects that are intended to facilitate new exports to the northeastern United States. To the extent that the prospect of exports is driving the construction of new reservoirs, Northern Pass and projects like it will be responsible for those reservoirs’ emissions and also their other adverse environmental impacts. And if, as the developers’ analysis concluded, the power to be displaced by imports through Northern Pass is overwhelmingly from natural gas plants, the emissions from a succession of new reservoirs in Canada may replace – perhaps completely for a period of time – the emissions of displaced natural gas power. In that scenario, the Northern Pass project would do little – or even nothing – to reduce greenhouse gas emissions, at least in the near-term.

The report makes another critical point about a different kind of displacement that could occur with Northern Pass. According to a recent study, stepping up Hydro-Québec’s exports to the United States may actually decrease its exports to other provinces in Canada, where the need for fossil fuel-fired power then increases, resulting in additional emissions. Those emissions may cancel out any reductions from displaced power in the United States. This effect is a potential blind spot that needs to be considered and analyzed as part of the public review of any new imports.

The report’s findings are important information regarding the environmental impacts of the project that the U.S. Department of Energy must consider as part of its review of Northern Pass’s application for a Presidential Permit. For that reason, earlier today, CLF submitted the report to DOE along with Synapse’s analysis of the potential effect of Northern Pass on the regional market for renewable energy.

To CLF, the report suggests that new imports could be part of the region’s climate strategy if imports:

• displace dirty power, like project sponsor PSNH’s uneconomic, subsidized power plants, to achieve a meaningful net reduction in greenhouse gas emissions without increasing the use of fossil fuel-fired power plants in Canada;
• support – rather than undermine – local renewable projects and energy efficiency efforts in New England; and
• have minimal impacts on the environment and communities on both sides of the border.

PSNH is in a unique position to take its coal units offline, in conjunction with its potential power purchase agreement with Hydro-Québec that is supposedly in the works. Instead, PSNH is marching on with its broken coal-based business model at great cost to New Hampshire consumers and the environment. Unless the proposal changes, the Northern Pass project does not deliver on the developers’ claims and will not advance a cleaner energy future for New England.

The Eastmain Powerhouses from space (photo credit: NASA)

Beyond the discredited sales pitch that Northern Pass will lower electric rates in New Hampshire, the developers have repeatedly claimed that the power to be imported through the Northern Pass project will be “low-carbon,” “clean,” and “green,” with “no greenhouse gases,” and “no global warming.” The power will also, we’re told, “improve the quality of the air we breathe.” The developers have said, over and over, that the project “is expected to reduce regional carbon dioxide emissions by up to 5 million tons per year, the equivalent of removing from the road one million cars annually.” In fact, the study on which this claim is based – a report (PDF) commissioned by Northern Pass and authored by Boston-based energy consultant Charles River Associates – began with the assumption that hydro power is “zero-carbon.” Let me repeat that: the developers’ claim that the project will reduce carbon dioxide emissions by a net 5 million tons is based on their unexamined presupposition that the power to be delivered by the project has no carbon dioxide emissions at all.

There’s no other way to say it: this assumption is false.

You don’t have to take my word for it; read Hydro-Québec’s own research report (4.4 MB PDF) on the net greenhouse gas emissions of the Eastmain 1 Reservoir, flooded in 2005 (aerial shots here). In an Orwellian twist, the developers of Northern Pass have repeatedly cited this very same research.

The Hydro-Québec report found that net carbon emissions from Eastmain-1 were 500,000 tons in 2006 and 165,000 tons in 2009, and are projected to average approximately 158,000 tons per year on a long-term basis.  While certainly less than coal-fired power plants – PSNH’s Merrimack Station emitted more than 2.8 million tons of carbon dioxide in 2010 – 158,000 tons of net carbon emissions per year is far from ”zero-carbon” or even “low-carbon” power.  Based on our own survey of reservoir greenhouse gas research, we have some serious questions about the report, and there is reason to believe that it understates emissions over time and per unit of energy generated. But the report does confirm that Hydro-Québec’s reservoirs will continue to emit more greenhouse gases per year than the natural environment they flooded. These emissions are locked in for decades if not centuries – unlike a power plant that burns fuel, you cannot turn off a reservoir.

When compared with the power plants that Northern Pass’s power could displace, new hydroelectric projects in their early years of operation are no cleaner in terms of carbon emissions.  According to the report, ”it takes about five years for the accumulated CO2 eq. emissions to fall below the [natural gas combined cycle] value” (p.15). So, on a net and cumulative basis since its flooding in 2005, the Eastmain 1 Reservoir has had the same carbon dioxide-equivalent emissions as a modern natural gas power plant that has the same power output and began operating in 2005. 

The report also highlights what appears to be a clear difference between the net emissions of a newly impounded reservoir and the emissions of a reservoir that was impounded decades ago: a new reservoir emits more greenhouse gases, as the vegetation and organic material in the newly inundated area decompose.

This distinction is especially important when considering the contradictory stories we have heard about where Northern Pass will get its power. On the one hand, Northern Pass’s website claims (click on “Hydro-Québec” on this page) that “Hydro-Québec does not need to build any new generation to support this project.” On the other hand, it is clear that Québec is developing and planning vast new hydroelectric projects, many of which will require new inundation and reservoirs, as part of a concerted strategy to maintain and increase exports to New England and the northeast United States. See Erin’s blog post from yesterday for more on Vermont’s new long-term contract with Hydro-Québec. 

In fact, Charles River Associates’ fundamentally flawed estimate of carbon emissions reductions depends on the development of new hydro projects in Canada. And just ten days ago, in testimony to Massachusetts regulators, Northeast Utilities’ CFO David McHale stated under oath: “We already know for a fact that the utility Hydro-Quebec has initiated the construction of dams, and we’ve already entered into the record a discussion about the Eastmain Water Reservoir that will provide the water source. So this is not speculative. They’re building the dams and they will go into service; and that will be the primary source, if not the exclusive source, of energy that will flow over [the Northern Pass] line. . . . [T]hat is the full expectation.” What McHale was referring to is Hydro-Québec’s major new project in the vicinity of Eastmain-1 – the Rupert River project (project website here and explanatory animation here). Since 2009, this 918-MW project – now in the final stages of development – has newly flooded 346 square kilometers  - an area about the size of two Lake Winnipesaukees. That Northern Pass power will be coming from new projects means that Northern Pass will enable and contribute to the substantial carbon emissions associated with new reservoirs.  There has been no accounting of the potential emissions from the Rupert project and other future projects that Northern Pass may make possible, and how they would cut into the potential emissions reductions Northern Pass and Charles River Associates have claimed.

These inaccuracies and contradictions are being disseminated with hundreds of thousands of dollars in media buys, money which could have been invested in engaging in a collaborative process to rework the current proposal.  This situation makes CLF’s fight for a world-class, independent, and comprehensive permitting process all the more important.

CLF has been adamant that the Department of Energy must consider the environmental impacts – including greenhouse gas emissions – of the hydropower generation projects and any other power plants in Canada that will supply the Northern Pass project.  Given the developers’ recent announcement of new delays in their schedule, there’s still time for the Department of Energy to change course and answer our call for a regional, holistic analysis of the right approach to importing power from Canada, taking into account the truth about that power’s greenhouse gas emissions.