enhanced oil recovery
For the first time ever, a large-scale, coal-fired power plant is capturing carbon dioxide to keep it from being released into the atmosphere – a milestone for a technology critical to addressing climate change.
Canadian electric utility SaskPower has switched on unit 3 at its Boundary Dam power plant, about 10 miles from the North Dakota border, and will hold an official grand opening Oct. 2. Following a $1.2 billion retrofit, the 46-year-old, 110-megawatt coal unit is now on course toward capturing 90 percent of its carbon emissions. Other upgrades reduce nitrous oxide emissions and capture 100 percent of the unit’s sulfur dioxide emissions.
Numerous commercial-scale carbon capture and storage (CCS) technology projects have been deployed in the industrial sector. In the power sector, demonstration-scale projects have been deployed, but this is the first commercial-scale project.
We will need to construct hundreds of such projects (along with other zero- and lower-emitting technologies) if greenhouse gas emissions are to be reduced to levels that avoid the worst effects of climate change. According to the International Energy Agency, more than 440 terawatt-hours (TWh) of CCS must be generated between 2020 and 2035 to give us a chance of limiting global temperature rise to 2 degrees Celsius (3.6 degrees Fahrenheit) above pre-industrial levels. To get a sense of that scale, SaskPower’s unit 3 can produce up to 1 TWh of electricity per year.
The Boundary Dam project is important not just because it’s the first of its kind, but because it demonstrates a way to help make carbon capture technology economically viable -- by turning unwanted pollutants into valuable commodities. SaskPower has agreed to transport and sell its captured carbon dioxide (CO2) to an oilfield operated by Cenovus for use in enhanced oil recovery (EOR) operations. The captured CO2 helps coax additional production from declining oil fields and results in the permanent storage of the CO2 underground. (In addition, captured sulfur dioxide emissions will be used to produce 50 tons per day of sulfuric acid for industrial customers, and SaskPower will sell the plant’s coal combustion residuals, also known as coal ash, for use in construction products like drywall and concrete.)
If carbon dioxide were a valuable commodity instead of a waste product, there would be a lot more incentive to capture it.
It turns out some oil producers already find carbon dioxide so useful, they’re willing to pay for it. In fact, they pay upwards of $30 per ton of CO2, which they then inject underground to coax oil from declining wells.
U.S. oil producers have been practicing carbon dioxide enhanced oil recovery (CO2-EOR) for four decades. Historically, they’ve relied mostly on CO2 from naturally occurring underground reservoirs. A better idea is to use man-made carbon emissions that would otherwise go into the atmosphere and contribute to climate change.
Congressional Testimony of Judi Greenwald on the Future of Coal: Carbon Capture, Utilization and Storage
Testimony of Judi Greenwald, Vice President for Technology and Innovation
Center for Climate and Energy Solutions
Subcommittee on Energy
Committee on Science, Space, and Technology
U.S. House of Representatives
July 25, 2013
Click here to view video of the testimony.
Hearing on The Future of Coal: Utilizing America's Abundant Energy Resources
Carbon Capture, Utilization and Storage
Madam Chairman, Rep. Swalwell, and members of the Subcommittee, thank you for the opportunity to testify on carbon capture, utilization, and storage. My name is Judi Greenwald, and I am Vice President for Technology and Innovation at the Center for Climate and Energy Solutions (C2ES – formerly known as the Pew Center on Global Climate Change).
My testimony today will focus on the most important climate and energy solution that no one knows about. I will emphasize two main points:
- Carbon capture and storage (CCS) is a critical technology for solving climate change, while allowing continued reliance on fossil fuels.
- Carbon dioxide enhanced oil recovery (CO2-EOR) can advance CCS, while boosting domestic oil production and generating net federal revenue.
C2ES is an independent, nonprofit, nonpartisan organization dedicated to advancing practical and effective policies and actions to address our global climate change and energy challenges. We perform multifaceted research and analysis of the scientific, technological, economic, and policy aspects of these issues. Our work is informed by our Business Environmental Leadership Council (BELC), a group of 34 major companies, most in the Fortune 500, that work with C2ES on climate change and energy risks, challenges, and solutions. The views I am expressing, however, are those of C2ES alone.
C2ES has been analyzing CCS for over a decade and has recently focused on how CO2-EOR can advance CCS. With the Great Plains Institute, C2ES co-convenes the National Enhanced Oil Recovery Initiative, or NEORI, a coalition of businesses, environmental NGOs, labor representatives, and state officials advocating for incentives to use captured CO2 in EOR. You can find more information on NEORI at www.neori.org. I would like to submit NEORI’s CO2-EOR analysis and consensus recommendations for the record. In addition, C2ES serves as the advisor and facilitator to the Sequestration Working Group of the North America 2050 Initiative, a collaborative of states and provinces exploring options for CCS regulations and incentives. C2ES recently completed a summary of state-level regulations and incentives that can be found at www.na2050.org/sequestration.
C2ES also has authored research and publications related to CCS and CO2-EOR. For example, C2ES developed a comprehensive framework for calculating CO2 emissions from CCS based on input from experts in industry, academia, and the environmental community. C2ES also publishes a CCS Climate TechBook, a brief report that explains in layman’s terms how CCS technology works, why its development is needed to address climate change, and how it might be advanced.
CCS is a critically important technology
The United States and the rest of the world are getting 80 percent of our energy from coal, oil and gas, and our dependence on, and overall use of, these fossil fuels globally is growing rapidly. Under a business-as-usual scenario, the Energy Information Administration expects fossil fuels will continue to provide more than 65 percent of U.S. electricity in 2040 – with 35 percent coming from coal-fired generation. Globally, coal consumption is expected to increase nearly 60 percent over the next two decades, led by developing countries like China and India, which together will comprise 62 percent of the total global coal demand in 2035. This poses an enormous challenge, because the CO2 emissions from the combustion of these fossil fuels are the major contributor to global climate change. While we can and should become more energy-efficient and shift our energy mix toward inherently zero-emitting sources like nuclear power and renewables, it will be difficult to do that fast enough and at a reasonable enough cost to avoid the worst climate impacts.
Hence the critical need for CCS, a suite of technologies that captures CO2 and stores it deep underground in geological formations. CCS can capture up to 90 percent of emissions from stationary sources, such as power plants and industrial facilities, thereby allowing coal and natural gas to remain part of our energy mix. The International Energy Agency (IEA) and others have demonstrated through detailed technology and economic scenario analyses that CCS is likely an essential component of an affordable and effective response to global climate change. In fact, IEA estimates that CCS could provide one-sixth of the requisite GHG emissions reductions by 2050.
What is needed to advance CCS?
CCS has been established and commercialized for the capture of CO2 from some industrial processes such as natural gas processing, chemical, fertilizer and ethanol production, and the gasification of coal. The use of man-made CO2 in EOR has been practiced for several decades. However, CCS in other contexts – for example, coal- and natural gas-powered electricity generation – is a relatively expensive technology that is just reaching maturity. Further R&D is important, but the key challenge for CCS is to get a sufficient number of commercial-scale projects up and running to demonstrate the emerging technologies at scale and bring down their costs. The first large-scale commercial CCS power projects are under construction. Yet, it is still unclear whether more commercial-scale CCS projects will be built after these initial projects are completed. After the collapse of climate legislation in the United States in 2010, a number of CCS projects were cancelled.
CCS is being increasingly thought of as carbon capture utilization and storage, or CCUS. Instead of seeing CO2 as a waste, utilizing and selling captured CO2, primarily for EOR, improves the economics of CCS projects and is an important market driver. Almost all of the existing or planned CO2 capture projects in the United States have been developed with the intention of marketing captured CO2 for use in EOR. Still, in many cases, additional drivers are needed. Those projects operating or underway today are being financed though some combination of U.S. Department of Energy (DOE) grants, utility cost recovery from ratepayers, private finance, sales of CO2 for EOR, other revenue streams from chemical production, and existing tax credits.
DOE’s role in CCS development has been and will remain critical. DOE is working with the private sector on the leading innovative CCS projects in the United States today. This collaboration is beginning to yield results. In late 2012, the DOE-supported Air Products’ Port Arthur CCS project, where CO2 is captured from refinery-based hydrogen production and sent for use in EOR, began operations. Through its Industrial Carbon Capture and Storage (ICCS) Program and with funding from the American Recovery and Reinvestment Act of 2009 (ARRA), DOE agreed to fund $284 million of the Port Arthur project’s $430 million total investment cost. The Port Arthur project is expected to capture up to 1 million tons of CO2 per year and enable EOR production of 1.6 million to 3.1 million barrels of domestic oil a year in East Texas.
DOE is also working on applying CCS to the power sector. Southern Company’s coal-fueled Kemper County energy facility in Mississippi is now under construction and will be the first commercial-scale CCS power project in the United States. DOE selected the Kemper project to receive more than $290 million through its Clean Coal Power Initiative (CCPI). A later round of the CCPI made possible through ARRA funding selected three additional coal-fired CCS power projects for funding. They are Summit Power’s Texas Clean Energy Project (TCEP), NRG Energy’s Washington Parish Project, and SCS Energy’s Hydrogen Energy California project. TCEP is nearing financial close and, when completed, will capture 90 percent of its emissions and supply approximately 2.5 million tons of CO2 for use in EOR.
Given the high costs and uncertainties of CCS investment for the private sector and the urgent need for CCS, it is extremely important that the federal government continue to support CCS research, development, demonstration, and deployment. Beyond DOE’s pivotal role, other forms of federal financial support, such as tax credits, should be reformed and expanded. States too can play a key role in advancing CCS through incentives and well-informed regulation.
Background on CO2-EOR
CO2-EOR is a means of commercial oil production that could play a key role in the development of CCS and in increasing our domestic energy security. CO2-EOR has the potential to increase American oil production by tens of billions of barrels, while displacing imported oil and safely storing billions of tons of CO2 underground.
How does CO2-EOR work? Even after conventional primary and secondary oil recovery, most of the oil in a typical oil field is left in the ground. When injected deep underground, CO2 can make it possible to recover more oil and extend an oil field’s life. The best available evidence indicates that by using best EOR industry practice and existing rules governing underground injection, the overwhelming majority of the injected CO2 remains underground, incidentally and safely storing CO2. Commercial injection of CO2 for EOR is regulated under EPA’s Underground Injection Control Program, and under current federal greenhouse gas reporting rules for air emissions, EOR operators may document this incidental CO2 storage through additional monitoring, reporting, and verification requirements to qualify as geologic sequestration. There is a range of views as to what additional state or federal rules are needed to ensure that CO2 is stored permanently.
The United States has been a global leader in CO2-EOR for 40 years. We currently obtain six percent of our domestic oil production through this method. While most CO2-EOR activity occurs in the Permian Basin of Texas, there are also projects in the Gulf Coast, the Rocky Mountains, Oklahoma, and even Michigan. Estimates of the potential for CO2-EOR to increase oil production and store CO2 have been increasing in recent years. According to the National Energy Technology Lab, using existing techniques, CO2-EOR could double or triple U.S. oil reserves and store 10 to 20 billion tons of CO2, which is equivalent to between five and 10 years of emissions from all U.S. coal-fired power plants. More advanced techniques could yield much higher oil production and CO2 storage.
The key role of CO2-EOR in advancing CCS
For those CO2 capture technologies that have not reached full commercialization, especially in electric power generation, selling captured CO2 for use in EOR can provide a revenue stream that helps reduce the financial risks and uncertainty of investing in emerging technology. About 75 percent of the CO2 used in EOR currently comes from naturally occurring CO2 reservoirs. The rest comes from man-made CO2 sources. Somewhat oddly, the EOR market lacks sufficient CO2. By expanding carbon capture from man-made sources, we can increase domestic oil production, promote economic development, create jobs, reduce CO2 emissions, and drive innovation in CCS technology.
It is because of these multiple benefits that we have been able to bring together the National Enhanced Oil Recovery Initiative, or NEORI, a diverse coalition favoring the reform and expansion of existing tax incentives to use captured CO2 in EOR. Among the members of NEORI are Arch Coal, Summit Power, Tenaska, the Natural Resources Defense Council, AFL-CIO, and The Wyoming Outdoor Council. Some of NEORI’s participants are primarily interested in job creation, others in increasing domestic oil production, and others in protecting the environment. But all agree that advancing the capture of man-made CO2 for use in EOR makes sense. NEORI has been briefing members on both sides of the aisle in both houses of Congress on its proposals.
EOR operators in some regions are willing to pay upwards of $30 per ton for CO2. At the same time, industrial facilities and power plants are emitting billions of tons of CO2 into the atmosphere as a waste. CO2-EOR therefore offers the opportunity to transform this waste into a marketable commodity and transform an environmental problem into an energy production solution.
In a few cases, revenue from selling CO2 for enhanced oil recovery is sufficient to pay for CO2 capture and transport. Thanks to the efforts of the private sector and DOE, many CO2 capture technologies are already commercially proven, and only a modest incentive is needed to help close the gap between the market price of CO2 and the costs to capture and transport it. In the case of emerging technologies, however, companies need a larger incentive to help shoulder the additional financial and operational risk of deploying new, pioneering capture projects for the first few times at a commercial scale.
By combining private EOR operators’ willingness to pay for CO2 with a tax incentive, society leverages its public investment. Perhaps most importantly, according to our analysis, such tax incentives would more than pay for themselves by driving increased domestic oil production and associated taxable oil revenues. Increased CO2-EOR production will generate federal revenue that more than pays for the cost of new incentives within a 10-year timeframe. Under existing tax treatment, CO2-EOR directly yields revenues from three main sources: corporate income taxes, individual income taxes on royalties from production on private land, and royalties from production on federal land. Our analysis indicates that federal revenues from incremental CO2-EOR production would exceed the fiscal cost of new incentives by more than $100 billion over 40 years.
CCS is a critical technology for reconciling our continued dependence on fossil fuels with the imperative to protect the global climate. Our best hope at the moment for CCS advancement is carbon capture, utilization, and storage, or CCUS. The best example of CO2 utilization we know of is enhanced oil recovery (CO2-EOR). Solving our climate and energy problems will require a portfolio of technologies, and all must be pursued vigorously. But we are focusing here today on CO2-EOR, because it is the most important climate and energy solution that no one knows about.
Two out of three respondents in a new University of Texas poll said energy issues are important to them. But the harsh rhetoric of campaign season makes it seem like politicians can never agree on important policies needed to provide safe, reliable and affordable energy while also protecting the environment.
Well they can, and they did. Right now in Washington, D.C., we have a bipartisan bill that would reduce carbon emissions and develop domestic energy resources.
I spent the last few days at the eleventh annual Carbon Capture Utilization & Sequestration Conference (CCUS) in Pittsburgh.
For its first 10 years, it was the CCS conference, focused primarily on advancing efforts to capture and permanently sequester carbon emissions underground. This nascent technology is absolutely critical if we are going to continue burning fossil fuels and have any hope of averting dangerous climate change.
This year the conference organizers added “Utilization” to the title. This addition reflects a new reality: in the absence of strong climate policy, the key driver of CCS innovation is the utilization of CO2 for enhanced oil recovery (CO2-EOR). This is a little-known technique in which CO2 (usually drawn from naturally occurring underground reservoirs) is injected into declining oil fields to boost their output. It now accounts for about 6 percent of domestic U.S. oil production.
Bloomberg editors endorse NEORI's production tax credit recommendations
Few policy options can be a win-win for both political parties, as well as industry, environmental advocates, and labor. Similarly, increasing oil production and decreasing carbon emissions are thought of as conflicting goals. Yet, a solution may be on the horizon. On February 28, the National Enhanced Oil Recovery Initiative (NEORI) released its recommendations for advancing enhanced oil recovery with carbon dioxide (CO2-EOR). NEORI is a broad coalition of industry, state officials, labor, and environmental advocates.
While NEORI participants might not agree on many energy and environmental issues, each participant recognizes the vast potential of CO2-EOR and worked toward producing a set of policy recommendations for its expansion. CO2-EOR already produces 6 percent of U.S. oil, and it could potentially double or triple existing U.S. oil reserves. In comparison to other options, CO2-EOR offers an extraordinarily large potential expansion of domestic oil production, while also advancing an important environmental technology.
Recently, I had the opportunity to attend as an observer the launch of the National Enhanced Oil Recovery Initiative, facilitated by the Center and the Great Plains Institute. In the short time since the launch, the EOR Initiative has generated notable
Carbon dioxide enhanced oil recovery (CO2-EOR) works by injecting CO2 into existing oil fields to increase oil production. It is not a new concept. In fact, around 5 percent, or 272,000 barrels per day, of all domestic oil produced comes from oil recovered using this technique, which was first deployed in West Texas in 1972. Decades of monitoring CO2-EOR sites have shown that in properly managed operations the majority of CO2 is retained in the EOR operation and not released to the atmosphere. One of the initiative’s goals is to better understand the role of CO2-EOR for carbon storage as this industry grows to produce more than 1 million barrels per day, or around 17 percent of domestic oil supply in 2030.