LNG Canada final investment decision 18 to 24 months away, CEO says. Has concerns about air shed, pipelines

LNG Banada
The LNG Canada site at the old Methanex plant in Kitimat, April 29, 2014. (Robin Rowland/Northwest Coast Energy News)

The final investment decision for the LNG Canada project is 18 to 24 months ahead,  Andy Calitz, CEO LNG Canada said Wednesday.

Calitz said that the project must go through a series of what are called “stage gates” before the respective corporate boards of the partners make that decision. Calitz said the project has already completed three stages, identifying the project, testing the idea, selecting what exactly the proponents are going to do. “Then there is the so-called design stage when all the design experts come in. We are hundred per cent certain we are tackling the next phase.” It is when the design phase is complete and then depending on world market conditions, that the final investment decision will be made.

Caltiz also pointed to one reason that while the LNG Canada project is moving ahead slowly,it appears to be moving faster than the rival Chevron-Apache Kitimat LNG project. That’s because the four investors in the LNG Canada project, Shell, PetroChina, Mitsubishi and KoGas (Korea Gas) are the customers, shipping their own product via the proposed TransCanada Coastal Gaslink pipeline, to the jointly owned terminal that will be built on the old Methanex site in Kitimat.

Caltiz’s comments came at a Vancouver news conference called to announce a joint venture agreement between the four partners. Under today’s agreement, Shell has increased its stake in the project to 50 per cent from 40 per cent; PetroChina will hold 20 per cent and each of Kogas and Mitsubishi Corporation holding 15 per cent. PetroChina and Shell increased their holdings by buying from the other partners.

Calitz said, “They each bring their own gas, they each put their own capacity in the pipeline to be transported by Transcanada, they together own the energy plant, then they lift the cargo in the same proportion, taking in to their own potrfolios, for every cargo that is produced, say for every 100,000 cubic metres, 15 will go Kogas 15 to Mitsubishi 20 will go Petrochina and 50 will go to Shell.”

One reason, along with the volatility and uncertainty of the liquified natural gas market that the Chevron Apache Kitmat LNG project appears to have stalled is a lack of customers. Kitimat LNG has said it is looking for equity partners similar to what was said today about the LNG Canada project.

Air shed

Asked a general question about environmental concerns, Calitz singled out local concerns about the air shed quality in the Kitimat valley and similar concerns up in Prince Rupert, saying, “We are at all times very sensitive to our environmental impact… In the case of the airshed around the LNG plant, it is being quantified, it;s being looked at cumulatively in Prince Rupert, in Kitimat. We also make sure that we work with the government about the sensitivity of air shed impact to the communities of Terrace and Kitimat. I can confirm your point it is high on our agenda. We understand the issues we all developed energy projects before and will continue to be vigilant.”

He said there were three main concerns that would affect the final investment decision: “Where does the Asian gas price go? Two will we have enough labor and what will the labor rates and labor productivity be and three between the various companies that have a lot of experience in Canada specifically TransCanada pipelines into Kitimat, and the other pipeline company going into Prince Rupert, we need to get those pipelines through the mountains.”

While it may be reading too much into one statement, it appears that LNG Canada and its partners are taking a more careful approach to pipeline construction than the Enbridge Northern Gateway project where that company was always certain its plans for crossing the rugged northwest BC mountains would yield few problems.

Russia crisis

The other major factor governing any decision on LNG plants in British Columbia is the volatile marketplace.

Reporters at the Vancouver news conference asked Caltiz about reported talks between China and Russia where Russia, now facing economic sanctions for its actions against Ukraine, would ship natural gas to China and if that would affect BC plans to export LNG to China.

“One can always draw linkages between any two subjects but I would say the linkage is between very weak and non existant,” Calitz said. “The closeest that anyone can come to a linkage is do the events in Europe and Ukraine increase the likelihood of a major pipeline between Russia and China, that’s for Russia and China to decide, but apart from that very very weak linkage.”

That state of prices remains a concern among reports that several Asian nations including the giants India and China plan to form a sort of buyers club, to drive down the high price of natural gas, which in Asia is a percentage of the price of crude oil, while in North America, market conditions have driven the price of natural gas much lower.

“There is a very active daily debate about prices paid for LNG in Asia. That debate, I am sure, will continue as long as the Henry Hub [the North America market price] is at $4 and Europe is at $8 and Asia based is somewhat from 12 to 18 dollars, depending on whether its contract or spot.

“If you ask is that of concern, then every project here will be affected by changes in price, whether the price goes up or down. will impact the final investment decision and it will impact in the way say the Pacific Northwest or the Kitimat LNG project.

“We as an energy project in British Columbia, like all other energy projects, like even from East Africa are looking at production costs and what the Asian prices are. So by 2015, what happens to that price and what happens in those negotiations will feature in the decisions of all the players.”

In a prepared statement, Calitz said,”“While we are in the early evaluation process and a decision to build the project is still a while away, this agreement reinforces our commitment to developing an LNG facility in British Columbia and allows us to proceed with the next steps in our project assessment, We will need to continue to work closely with the provincial and federal government to ensure that the project is economically viable, as well as working closely with First Nations, the local communities, and regulatory agencies, and move forward on a number of commercial agreements and contracts. We remain cautiously enthusiastic about the potential opportunity in B.C. and look forward to exploring it further.”

Premier Christy Clark, who made a brief appearance at the news conference before leaving to a prepare for another sales trip to Asia, was more optimistic, saying: “The private sector doesn’t make billion dollar investment decisions if they don’t think there isn’t going to be a return on it. It’s not for me … to determine what the market looks like, it’s the private sector that does that and I think the answer to them is you would not see those major companies taking the next step signing a joint venture agreement today if they didn’t think there was a market for BC gas.

“The other advantage that BC has that we will never sacrifice is our reputation as a dependable, reliable, honourable trading partner. When people do business in British Columbia on natural gas, they know we won’t play politics with them.They know we will keep our promises about where the tax levels will be and how they’re going to be treated as trading partners. That is a tremendous advantage for us in an unstable world.”

 

Temporary foreign workers

Asked by a reporter about LNG projects using temporary foreign workers, Clark replied. “The thing about temporary foreign workers is that temporary workers should come for temporary jobs, And in the process of building these huge facilities and pipelines with peaks in construction that we will not be able to meet within British Columbia or even Canada. There’s no question about that.
“Our view is very much British Columbians first, and the way to do that is to make sure people have all the skills training that they need to take advantage of those jobs, second reach out to the rest of the country and then third work with the unions and other organizations when needed to support temporary foreign workers coming in.

“We’ve had remarkable consensus with the trade unions, recognizing the need for some temporary foreign workers at some point in the construction of these projects. That’s why we’ve gone about planning it so carefully because we want to make sure when we will need workers in what skill set in what month and what years. We’re really breaking it down so we can be sure we have exhausted British Colunbia’s potential to fill those jobs before we start to look across the country or around the world.”

LNG Canada signing
LNG Canada joint venture agreement signing cermony in Vancouver, April 30, 2014, left to right, Jorge Santos Silva, Executive Vice President Shell Upstream Americas Commercial, Bi Jingshuang, Director – Legal Department of China National Oil and Gas Exploration and Development Corporation (CNODC), representing PetroChina, Andy Calitz, CEO, LNG Canada, Hiroki Haba, Vice President, Natural Gas Business Division, Mitsubishi and Jongkook Lim, Vice President, LNG Business Department, Korea Gas. Standing wathc are Christy Clark, Premier of British Columbia and Rich Coleman, Minister of Natural Gas Development. (LNG Canada)

Projects on the go

The news release listed the many LNG projects under way from the four partners.

Shell currently has ten LNG projects in operation with approximately 26.1 million tonnes per annum (mtpa) operational LNG capacity, in nine countries, and two projects
with an additional 7.5 mtpa under construction. Shell is also one of the largest LNG vessel operators in the world, with interests in around a quarter of the LNG vessels in operation.

Phoenix Energy Holdings Limited (an affiliate of Petro-China Investment (Hong Kong) Limited) (“PetroChina”) is China’s largest oil and gas producer and supplier, as well as
one of the world’s major oilfield service providers and a contractor in engineering construction. PetroChina officially launched three LNG projects in June 2004, two of
which started operations in the first half of 2011.

Kogas Canada LNG is the world’s largest LNG importer. As the nation’s sole LNG provider, KOGAS currently operates three LNG terminals and a nationwide pipeline network, supplying natural gas fromaround the world to power generation plants, gas-utility companies and city gas companies throughout the country.

Since pioneering the first LNG import to Japan from Alaska in 1969, Mistubishi handles 40 per cent of Japan’s LNG imports and has successfully built a portfolio of LNG export investments across Australia, Indonesia, Malaysia, Brunei, Oman, Russia and North America.

With the joint venture agreement, the group has incorporated a new federal corporation, LNG Canada Development Inc. The project’s corporate offices will continue to be located in Vancouver and Calgary, with the project office based in Kitimat.

Although pegged as a “major milestone” in the development of LNG Canada, the Kitimat social media rumour mill was correct in speculation Tuesday that the news conference concerned a corporate name change and sale of assets.   The event was probably more a kickoff for Christy Clark’s upcoming tour of Asia.

 

LNG Canada calls Wednesday morning news conference

LNG Canada logoLNG Canada has called a news conference in Vancouver early Wednesday morning to “announce a project milestone.”
BC Premier Christy Clark, BC LNG Minister Rich Coleman, LNG Canada executives and delegations from the joint venture partners, Shell Canada Energy, Diamond LNG Canada, an (“affiliate” of Mitsubishi), Korea Gas Corporation and Phoenix Energy (an “affiliate” of PetroChina) will be present at a downtown hotel.

Ottawa announces upgrades to Douglas Channel, Kitimat, navigation systems

Smart Ocean Systems map
Map from the Smart Ocean Systems website showing navigation upgrades. The map also shows potential LNG development and what it calls “Tidewater Oil Exports” in Kitimat and Vancouver. (Smart Ocean Systems)

The federal government today announced that it is going to spend $9,127,000 through the Western Diversification Program to support  “the development of Ocean Networks Canada’s (ONC) Smart Oceans BC program” to upgrade radar and other navigation aids on the BC coast.

The upgrades include adding the Automatic Identification System (AIS) ship tracking system, which means that those using a web-based ship tracker will be able to monitor major vessel traffic in Douglas Channel.

A news release from Michelle Rempel, Minister of State for Western Economic Diversification said:

The project will add small scale underwater observatories, high frequency coastal radars and an Automatic Identification System to ONC’s existing marine observatory footprint including near Port Metro Vancouver, Campbell River, Kitimat, the Douglas Channel waterway, as well as Prince Rupert.

The news release goes on to say an “expanded footprint”  will contribute to what the Conservatives call “responsible resource development”  by helping to prevent accidents, predicting and warning of natural hazards, and “improving overall marine operational situational awareness.”

The government says that IBM is developing a system to monitor the data streams from the hundreds of sensors that are being expanded as part of the Smart Oceans BC program. Improved data collection will allow modeling systems to better support disaster planning. In addition, highly qualified personnel will be trained in ocean analytics.

Additionally, SMEs will gain access to technology demonstrations and commercialization assistance, as well as international business development services offered by the ONC Innovation Centre.

The news release places special emphasis on Kitimat saying:

  • This project will allow for real-time monitoring of vessel traffic, waves, currents and water quality, in areas such as the Douglas Channel, a shipping artery leading to Kitimat.

 The news release quotes David Fissel, Chair and Senior Oceanographer, ASL Environmental Sciences, Inc, as saying: “This substantial investment in Smart Oceans BC will also benefit British Columbia’s many ocean science and technology SME’s. Access to ONC’s observatories and their innovative technology provides a competitive advantage to BC companies seeking to expand their export sales. Our success in global markets also benefits from the support of the ONC Innovation Centre’s international business development services.”

The Smart Oceans website describes the project this way: “Smart Oceans BC is the next phase in the world-class Ocean Networks Canada system that will position Canada as a global leader in ocean technology that delivers science and information for good ocean management and responsible ocean use.”

 It adds:

The Smart Ocean BC footprint will cover areas critical to Canada’s economic future including:

Strait of Georgia and Port of Vancouver
Proposed oil and gas export facilities located at the Port of Prince Rupert, Kitimat, Campbell River, Port Alberni, and Douglas Channel waterways
Associated shipping routes to the high seas

The announcement came just two days after the residents of Kitimat voted in a plebiscite against the Northern Gateway project. The ballot count from Saturday’s vote was 1,793 opposed versus 1,278 who supported the multi-billion dollar project — a margin of 58.4 per cent to 41.6 per cent.

BC releases special report on LNG jobs and training

BC LNG reportThe BC Ministry of Jobs, Tourism and Skills Training today released a special report on the job prospects for the LNG industry and the policies needed on training, job mobility and use of temporary foreign workers.

A news release says:

Premier Christy Clark today accepted all recommendations in ‘The Premier’s Liquefied Natural Gas Working Group: Final Report’ as a road map to making sure British Columbia has the skilled labour force it needs to seize the opportunity of liquefied natural gas.

The report, produced by representatives of government, LNG proponents, organized labour, and the Haisla Nation, maps out 15 recommendations on planning, skills training, marketing and developing best practices within the LNG sector to attract a mobile workforce.

“To bring home the opportunity presented by LNG, we have to work together — government, industry, First Nations and labour,” said Premier Clark. “Everyone here today is working toward the same goal – making sure British Columbians benefit from this generational opportunity.”

Premier Clark called together the working group after her first meeting with representatives of organized labour in September 2013. At that historic meeting it was agreed that all parties would to work together to map out how they could work together to solve some of the complex challenges associated with the LNG opportunity.

“I want to thank the Premier for setting up the working group. I also want to thank the representatives of the Haisla Nation, industry, labour and government as it has been quite a process to come to agreement on the recommendations,” said Jim Sinclair, president of the BC Federation of Labour. “We were able to get beyond our differences by keeping our focus on what B.C. workers need to take advantage of the potential that lies in LNG. Now we have to ensure that the 15 recommendations are implemented. This investment in the workers of British Columbia will lead to good jobs. As we know, good jobs build a better B.C.”

The report includes one recommendation on developing a working group moving forward, four recommendations on skills training planning and implementation, two recommendations on marketing and promotions, three recommendations on apprenticeship trades and mentoring, two recommendations on a mobile workforce, one recommendation on timelines and two recommendations on the use of workers from other jurisdictions. The recommendations will be reflected in the 10-year skills training plan that will be released soon.

“Premier Clark recognized early the need for LNG workforce development in collaboration with industry, labour, and government,” said David Keane, vice president, policy and corporate affairs for BG Canada’s Prince Rupert LNG project. “Skills training is critical to ensure citizens of the province might realize the full economic benefits of LNG.”

From the report…..

Top 10 Construction-
Related Jobs with the
Greatest Demand

1.Steamfitters &
pipefitters
2.Construction traders
helpers & labourers
(including riggers)
3.Welders
4.Concrete finishers
5.Heavy equipment
operators
6.Carpenters
7.Truck drivers
8.Purchasing agents &
officers
9.Gas fitters
10.Crane operators

Read the full report

LNG_Final_Report

 

Rio Tinto, Shell LNG on shopping spree in China: Financial Times

Britain’s Financial Times today chose two Kitimat related companies to highlight how western business is turning more and more to China.

Shell turns to Asian suppliers in US shale race  (Registration/subscription required)

Royal Dutch Shell has said it will deploy more Chinese equipment at its struggling US shale business – becoming the latest natural resources company to try to reduce costs by switching to cheaper Asian suppliers.
Miners such as Rio Tinto and Antofagasta have already been encouraged by improvements in the reliability of Chinese machinery, which they say can now be integrated into their existing operations without compromising efficiency or safety standards….

Shell’s move comes as oil and mining companies – which ramped up capital expenditure in recent years amid a huge commodities boom – are being pressed by shareholders to curb spending and improve returns….

Rio Tinto, the Anglo-Australian miner, has also been on a spending spree in China. The company, which is slashing its capital spending after disappointing investors with cost overruns, says it made close to $2bn-worth of equipment purchases in China last year, and around $1bn-worth in India.

 

Rio Tinto Alcan has said that much of the building materials and equipment for the Kitimat Modernization Project has come from China, often in huge modules which are then inserted into the new buildings as part of the aluminum smelter upgrades.

Kitimat Votes: Douglas Channel Watch soft launches new website

The Kitimat environmental group Douglas Channel Watch has soft launched a new website.

It can be found at douglaschannelwatch.ca.

At the moment the site redirects to the web designer site, as that company continues to build the site.

Full operation of the website is expected to begin in the next few days.

Douglas Channel Watch is playing catchup. Enbridge Northern Gateway launched a plebiscite vote yes website YesforKitimat, a couple of weeks ago.

Skeena Bulkley Valley MP Nathan Cullen and the New Democratic Party also have a campaign website, largely aimed at the rest of the province, Take Back Our Coast promoting rallies in Campbell River, Powell River, Courtney, Duncan, Victoria and Vancouver.

The two major Kitimat LNG projects are also about to launch new websites. Shell’s LNG Canada held focus groups and discussions in Kitimat a few weeks ago as part of the company’s planning for its new website, which LNG Canada public relations staff said would be more engaging for the residents of the region. At the recent open house, Chevron, which is building the KM LNG project at Bish Cove also said they were redesigning their website.

Clio Bay reclamation postponed as new contractor takes over at KM LNG

Marine clay sign Robin Rowland photo
Sign explaining marine clay at the Chevron/ KMLNG Open House, in Kitimat, March 13, 2014. (Robin Rowland/Northwest Coast Energy News)

Studies on the Clio Bay reclamation project have been postponed until the fall while the new prime contractor takes over the Kitimat LNG project.

A spokesperson for Chevron said at the Kitimat LNG open house on Wednesday now that Irving , Texas-based Fluor Corp, in partnership with a joint-venture partner, Japan’s JGC Corp. has won the engineering, procurement and construction contract for the KM LNG project, it will take some time for the new company to be briefed on the Clio Bay project and then begin working with Stantec the environmental contractor on the project. That means that the reclamation project itself will now not likely proceed until spring of 2015.

In community meetings last fall, Chevron had said it expected the preliminary studies to be completed in January or February.

KM LNG, a partnership between Chevron and Apache Corp, took over the Riverlodge Recreation Centre for three days from February 2 to 4, to brief employees and contractors on the transition from KBR Inc., the original prime contractor which lost the bidding for the second stage of the contract to Flour.

KM LNG organized the open house mainly to show what is happening at the old Eurocan site, which is being converted to a work camp for the project.

The Clio Bay project, however, had a prominent place among the panels on display at Riverlodge. In the panels, Chevron says that up to 40 per cent of the Clio Bay bottom is covered with wood debris, at some points, as much as 10 metres deep, meaning a degraded habitat for dungeness crab and eel grass.

As was announced in the fall, Chevron, in partnership with the Haisla Nation, plan to take marine clay from Bish Cove and use it to cover the wood debris to create a new sea bottom. One panel said: “The new layer of marine clay is expected to be colonized by eel grass and by species such as worms, crustaceans, small fish and other sea life that will encourage a more plentiful, healthy ecosystem replacing the degraded ecosystem created by the decomposing wood debris that now covers the ocean floor.”

Chevron sees the project as an example that others could follow. Another panel notes: “Project proponents around the world are moving away from the old practice of dredging and disposing of marine clay. The Clio Bay restoration project would see marine clay used wisely to deliver benefits to the environment, community and culture.”

Work continues on the remediation of the old Eurocan mill site. Chevron and Apache are, in effect, spending millions of dollars to clean up the mess left behind when West Fraser abandoned the mill.

The company has to demolish the old mill and remediate contaminated areas. One of the big challenges is dealing with the old landfill site, which Chevron says has to be brought up to 21st century environmental standards. That includes adding an impermeable lining to the landfill and upgrading the leachate treatment systems.

Cleaning up the mess left by Eurocan will take about five years, according to one of the panels at the Open House. Chevron says that job will improve the environment, where they plan to build a work camp both in the short term and in the long term as work continues.

 

Coastal GasLink pipeline opens environmental assessment process

The Coastal Gaslink pipeline proposal  to bring natural gas to Kitimat for the Shell LNG Canada project is now entering the 45 day public comment environmental assessment period. It opens on March 21, 2014 and closes May 5, 2014.

Coastal GasLink Pipeline is a wholly-owned subsidiary of TransCanada Pipelines. The company is proposing to develop an approximately 650 kilometre pipeline to deliver natural gas from the area near the community of Groundbirch, B.C., to the LNG Canada gas liquefaction facility proposed to be developed by Shell Canada Ltd. and its partners in Kitimat.

An electronic copy of the Application and information regarding the British Columbia environmental assessment process are available at www.eao.gov.bc.ca.

The British Columbia Environmental Assessment Office, with the support of Coastal GasLink, will host four open houses in northern B.C. communities during the comment period.

The proposed Project would have an initial capacity of about two to three billion cubic feet (bcf) of natural gas per day with the potential for expansion up to about five billion cubic feet per day. The company says the expansion scenario assessed in the application does not involve the construction of additional pipeline; the number of potential future compressor stations would change.

The proposed pipeline is subject to review under British Columbia’s Environmental Assessment Act.

Starting on March 21, there are 45 days for the submission of comments by the public in relation to the Application. All comments received during this comment period will be considered. The intention of seeking public comments is to ensure that all potential adverse effects – environmental, economic, social, heritage and health – that might result from the proposed Project are identified for consideration as part of the assessment process.

The BC EAO accepts public comments by:

By Online Form: http://www.eao.gov.bc.ca

• By Mail:

Mr. Brian Westgate
Project Assessment Manager
Environmental Assessment Office
P.O. Box 9426 Stn Prov Govt
Victoria, B.C. V8W 9V1

• By Fax: 250-356-7477

Copies of the application are available in digital or paper form at public libraries in the project area.

The BC EAO invites the public to Open House events on the following dates:

  • March 27, 2014: Chetwynd & District Recreation Centre
  • April 1, 2014: Fraser Lake Recreation Complex
  • April 2, 2014: Burns Lake Heritage Centre
  • April 3, 2014: Riverlodge Recreation Centre, Kitimat

LNG Canada passes first step in BC environmental review, to hold LNG demonstration at Mt. Elizabeth Theatre

LNG Canada logoLNG Canada, the project led by Shell Canada Energy, has passed the first step in the environmental review process for the liquified natural gas plant and terminal.

LNG Canada said Tuesday that the British Columbia Environmental Assessment Office has  approved LNG Canada’s Application Information Requirements (AIR) for the proposed project.

The company says the AIR outlines the studies, methods, and information that will be required in LNG Canada’s Application for an Environmental Assessment Certificate.

The LNG Canada AIR was developed in consideration of comments submitted by the public, First Nations and regulators during a 30-day public comment period held in November/December 2013, including a public meeting at the  Kitimat Rod & Gun, where documents were distributed and employees answered questions from politicians and the public.

LNG Canada says it will now continue to gather information and complete studies in support of developing our Environmental Assessment Application.

The company  intends submit to the Environmental Assessment Application to the the B.C. EAO later this year.

LNG Canada will hold its next public meeting, an “LNG Demonstration and Presentation” on March 6, 2014 at the Mount Elizabeth Theatre starting at 6 p.m. The company says the event is to “to share information and answer questions about liquefied natural gas (LNG).” Starting at 7 pm there will be a a live demonstration using LNG to explain the science behind liquefaction and the properties of LNG.

For more information about the project’s EA process, www.eao.gov.bc.ca and look for our project under the “Proposed EAs” sections.

The other partners in the LNG Canada project are Diamond LNG Canada, an (“affiliate” of Mitsubishi), Korea Gas Corporation and Phoenix Energy (an “affiliate” of PetroChina).

Methane leaks from natural gas industry 50 per cent higher than EPA estimates study says

EPA Gas Leakage
This shows EPA Greenhouse Gas Inventory leakage estimates. Below: This shows results from recent experimental studies. Studies either focus on specific industry segments, or use broad atmospheric data to estimate emissions from multiple segments or the entire industry. Studies have generally found either higher emissions than expected from EPA inventory methods, or found mixed results (some sources higher and others lower).
( Stanford University School of Earth Sciences)

 

 

A new study indicates that atmospheric emissions of methane, a critical greenhouse gas, mostly leaking from the natural gas industry are likely 50 per cent higher than previously estimated by the US Environmental Protection Agency.

A study, “Methane Leakage from North American Natural Gas Systems,” published in the Feb. 14 issue of the international journal Science, synthesizes diverse findings from more than 200 studies ranging in scope from local gas processing plants to total emissions from the United States and Canada.

The scientists say this first thorough comparison of evidence for natural gas system leaks confirms that organizations including the EPA have underestimated U.S. methane emissions generally, as well as those from the natural gas industry specifically.

Natural gas consists predominantly of methane. Even small leaks from the natural gas system are important because methane is a potent greenhouse gas – about 30 times more potent than carbon dioxide.

“People who go out and actually measure methane pretty consistently find more emissions than we expect,” said the lead author of the new analysis, Adam Brandt, an assistant professor of energy resources engineering at Stanford University. “Atmospheric tests covering the entire country indicate emissions around 50 per cent more than EPA estimates,” said Brandt. “And that’s a moderate estimate.”

The standard approach to estimating total methane emissions is to multiply the amount of methane thought to be emitted by a particular kind of source, such as leaks at natural gas processing plants or belching cattle, by the number of that source type in a region or country. The products are then totalled to estimate all emissions. The EPA does not include natural methane sources, like wetlands and geologic seeps.

The national natural gas infrastructure has a combination of intentional leaks, often for safety purposes, and unintentional emissions, like faulty valves and cracks in pipelines. In the United States, the emission rates of particular gas industry components – from wells to burner tips – were established by the EPA in the 1990s.

Since then, many studies have tested gas industry components to determine whether the EPA’s emission rates are accurate, and a majority of these have found the EPA’s rates too low. The new analysis does not try to attribute percentages of the excess emissions to natural gas, oil, coal, agriculture, landfills, etc., because emission rates for most sources are so uncertain.
Several other studies have used airplanes and towers to measure actual methane in the air, to test total estimated emissions. The new analysis, which is authored by researchers from seven universities, several national laboratories and US federal government bodies, and other organizations, found these atmospheric studies covering very large areas consistently indicate total U.S. methane emissions of about 25 to 75 per cent higher than the EPA estimate.

Some of the difference is accounted for by the EPA’s focus on emissions caused by human activity. The EPA excludes natural methane sources like geologic seeps and wetlands, which atmospheric samples unavoidably include. The EPA likewise does not include some emissions caused by human activity, such as abandoned oil and gas wells, because the amounts of associated methane are unknown.

The new analysis finds that some recent studies showing very high methane emissions in regions with considerable natural gas infrastructure are not representative of the entire gas system. “If these studies were representative of even 25 percent of the natural gas industry, then that would account for almost all the excess methane noted in continental-scale studies,” said a co-author of the study, Eric Kort, an atmospheric science professor at the University of Michigan. “Observations have shown this to be unlikely.”

Methane air sampling systems
Top-down methods take air samples from aircraft or tall towers to measure gas concentrations remote from sources. Bottom-up methods take measurements directly at facilities. Top-down methods provide a more complete and unbiased assessment of emissions sources, and can detect emissions over broad areas. However, they lack specificity and face difficulty in assigning emissions to particular sources. Bottom-up methods provide direct, precise measurement of gas emissions rates. However, the high cost of sampling and the need for site access permission leads to small sample sizes and possible sampling bias.
(Stanford University School of Earth Sciences)

Natural gas as a replacement fuel

The scientists say that even though the gas system is almost certainly leakier than previously thought, generating electricity by burning gas rather than coal still reduces the total greenhouse effect over 100 years. Not only does burning coal release an enormous amount of carbon dioxide, mining it releases methane.

Perhaps surprisingly though, the analysis finds that powering trucks and buses with natural gas instead of diesel fuel probably makes the globe warmer, because diesel engines are relatively clean. For natural gas to beat diesel, the gas industry would have to be less leaky than the EPA’s current estimate, which the new analysis also finds quite improbable.

“Fueling trucks and buses with natural gas may help local air quality and reduce oil imports, but it is not likely to reduce greenhouse gas emissions. Even running passenger cars on natural gas instead of gasoline is probably on the borderline in terms of climate,” Brandt said.

The natural gas industry, the analysis finds, must clean up its leaks to really deliver on its promise of less harm. Fortunately for gas companies, a few leaks in the gas system probably account for much of the problem and could be repaired. One earlier study examined about 75,000 components at processing plants. It found some 1,600 unintentional leaks, but just 50 faulty components were behind 60 percent of the leaked gas.

“Reducing easily avoidable methane leaks from the natural gas system is important for domestic energy security,” said Robert Harriss, a methane researcher at the Environmental Defense Fund and a co-author of the analysis. “As Americans, none of us should be content to stand idly by and let this important resource be wasted through fugitive emissions and unnecessary venting.”

Gas companies not cooperating

One possible reason leaks in the gas industry have been underestimated is that emission rates for wells and processing plants were based on operators participating voluntarily. One EPA study asked 30 gas companies to cooperate, but only six allowed the EPA on site.

“It’s impossible to take direct measurements of emissions from sources without site access,” said Garvin Heath, a senior scientist with the National Renewable Energy Laboratory and a co-author of the new analysis. “But self-selection bias may be contributing to why inventories suggest emission levels that are systematically lower than what we sense in the atmosphere.”

The research was funded by the nonprofit organization Novim through a grant from the Cynthia and George Mitchell Foundation. “We asked Novim to examine 20 years of methane studies to explain the wide variation in existing estimates,” said Marilu Hastings, sustainability program director at the Cynthia and George Mitchell Foundation. “Hopefully this will help resolve the ongoing methane debate.”

###
Other co-authors of the Science study are Francis O’Sullivan of the MIT Energy Initiative; Gabrielle Pétron of the National Oceanic and Atmospheric Administration (NOAA) and the University of Colorado; Sarah M. Jordaan of the University of Calgary; Pieter Tans, NOAA; Jennifer Wilcox, Stanford; Avi Gopstein of the U.S. Department of State; Doug Arent of the National Renewable Energy Laboratory and the Joint Institute for Strategic Energy Analysis; Steven Wofsy of Harvard University; Nancy Brown of the Lawrence Berkeley National Laboratory; independent consultant Richard Bradley; and Galen Stucky and Douglas Eardley, both of the University of California-Santa Barbara. The views expressed in the study are those of the authors, and do not necessarily reflect those of the U.S. Department of State or the U.S. government.