Tag Archives: CCS

Firing up first world’s first coal-fired CCS plant: Five questions for Southern Co | Global CCS Institute

After two years of construction, Southern Co.  flipped the switch on the world’s largest-scale, coal-fired CO2 capture facility at a site on the banks of the Mobile River, in Barry, Alabama last month.

Teaming up with Mitsubishi Heavy Industries, Southern Co. brought on line a 25-megawatt, coal-fired carbon capture and sequestration (CCS) facility on a patch of river-side land that is home to the James M. Barry Electric Generating Plant, one of the largest in Southern Co.’s portfolio.

With more than 42 gigawatts of total generating capacity, and 4.4 million customers, Atlanta-based Southern Co. is one of the largest electric utilities in the United States.
For more details on the Barry CCS project, I had a quick exchange with Southern Co.’s Nick Irvin, a principal research engineer, just before the July 4th long weekend.

What carbon capture technology is the facility using? 

Southern Company teamed up with Mitsubishi Heavy Industries which, together, we are responsible for the CO2 capture plant design and operation. This facility utilizes the KM CDR Process, a capture technology which was developed jointly by Mitsubishi Heavy Industries and The Kansai Electric Power Co.

The first step, of course, is coal combustion, which generates electricity and gives off a flue gas. A share of the flue gas from the main coal power plant is piped to the CCS facility. There, as part of the KM CDR process, the flue gas reacts with KS-1, an amine solvent, which captures the CO2. This creates a flow of CO2 that can then be separated from the KS-1, compressed and sent to a sequestration off site.

What made the Barry plant the site of choice?

Barry was chosen on the basis of the facility’s size and status as a flagship site among Southern Co.’s fleet. The main facility here – the James M. Barry Electric Generating Plant – is home to seven generating units, powered by coal and natural gas, with a total nameplate generating capacity of 2,657 megawatts. The CCS plant takes a slipstream of the existing plant’s flue gas, equivalent to about 25 megawatts out of the total 700-megawatt gas flow.

What volume of CO2 are you capturing?

The facility is designed to capture about 500 metric tons per day, pulling about 90 per cent of the CO2 out of the inbound flue gas slipstream. Annually, it will operate with the capacity to capture 150,000 tons to 200,000 tons of CO2.

How is the CO2  being handled?  

Pipeline construction is underway to pump the CO2 to a site about 12 miles away.  Beginning this autumn, the Southeast Regional Carbon Sequestration Partnership will transport the captured CO2 through a pipeline to the Citronelle Oil Field, which is operated by Denbury Resources.

There the CO2 will be injected 9,500 feet into a deep saline geologic formation. The CO2 is being injected into an oil-drilling region but it is not being used for enhanced oil recovery. The CO2 is being sequestered in a formation about 3,000 feet above the deeper oil deposits, where it will remain permanently stored.

The U.S. Department of Energy (DOE), along with its program participants -Denbury Resources, Electric Power Research Institute and Southern States Energy Board – are managing the design and operation of the pipeline and injection system.

What’s next for Southern Co.’s CCS strategy? 

The goal at first Southern Co. is developing options to reduce emissions and meet potential regulatory requirements. We want to look at technologies of the future as an option to do this.  In addition to the Barry CCS project, the company is also:

  • Managing the DOE National Carbon Capture Center in Alabama, where we’re testing the next generation of technologies to capture carbon dioxide emissions.
  • Building a commercial-scale, 582-MW generating plant in Kemper County, Mississipi, using local lignite and the company’s Transport Integrated Gasification (TRIG) technology, with 65 per cent carbon capture and re-use.
  • Drilling wells to assess geologic suitability for carbon storage at other power Southern Co. power plants
  • Partnering with universities to train the next generation of CCS engineers and to advance the industry’s geologic testing capabilities.

Other resources: For more information on Mitsushishi’s KM CDR process, which is described as less energy-intensive than other CO2 capture technologies, see this introduction. Mitsubishi is rolling out the process at a variety of other facilities globally which are listed here.

Check out the original story here:
http://www.globalccsinstitute.com/community/blogs/authors/adamaston/2011/07/06/firing-first-world%E2%80%99s-first-coal-fired-ccs-plant-five-qu

Capturing carbon from the air? Economics make it a non-starter, says blunt U.S. physics report | Global CCS Institute

There has been tantalizing, if very early, progress in the technology of capturing CO2directly from the atmosphere. If such “air capture” could be done economically, developers of the technology imagine it could radically lower the costs and complexity of carbon capture and sequestration (CCS).

But a recent study has cast serious doubts that such an approach could ever be economically viable.

First, a reminder of how air capture could simplify the development of carbon capture infrastructure. As now envisioned, most CCS regimes would require power plants to capture emissions at or before the smokestack, then pipe the CO2 some distance to regions with the right geology to entomb the greenhouse gas.

Building the pipeline system to transport these gases within North America, an industry insider once explained to me, could be comparable in scale and cost to the construction of the grid of natural gas pipelines that criss-cross the continent, and that have taken most of a century to build.

Air capture could do away with much of that costly network. Whether CO2 is captured at the source, a mile away, or on the other side of the planet, it doesn’t matter to the atmosphere where the CO2 is extracted, so long as the same amount, or more, is removed.

This would make it possible to site CO2 injection operations directly on top of the best geological sites. It could also simplify the CCS challenge in more populated regions, where zoning complexities, property costs, and public anxieties might make local sequestration operations a headache.

A handful of companies are developing early-stage business models headed toward the goal of air capture. Here in New York City, Global Research Technologies (GRT) is working to commercialize “carbon trees” based on a proprietary material being developed at Columbia University that mops up CO2 from ambient air. (For more on the technology, I profiled GRT’s plans over at NRDC’s OnEarth, here.)

Promising as it sounds, there’s a twist. Surveying the carbon balances behind air capture, a panel at the American Physical Society (APS) in May issued an unusually blunt rejection of the viability of such systems in a report entitled Direct Air Capture of CO2 with Chemicals.

The report’s criticism focuses not on the technical viability of direct air capture (DAC) of CO2, but on the peculiar catch-22 carbon balance that powering any such systems would put in motion.

In short, DAC systems would have to be powered by low-carbon energy sources such as renewables. But in any scenario where there are still higher-carbon power plants on the grid, there’s a bigger benefit to simply using the low-carbon energy sources to replace the higher-carbon power plants and hold off on the DAC systems. In other words, DAC doesn’t make sense until big CO2 emitters are virtually eliminated from the globe’s power plant mix.

Here’s how the authors put it…

…[ DAC] is not currently an economically viable approach to mitigating climate change. Any commercially interesting DAC system would require significantly lower avoided CO2costs…. In a world that still has centralized sources of carbon emissions, any future deployment that relies on low-carbon energy sources for powering DAC would usually be less cost-effective than simply using the low-carbon energy to displace those centralized carbon sources. Thus, coherent CO2 mitigation postpones deployment of DAC until large, centralized CO2 sources have been nearly eliminated on a global scale…

As I read it, the report shouldn’t derail research into DAC technologies per se. Given the alarming momentum of CO2 growth in the atmosphere, such tools are potentially powerful aides for the long-term carbon reduction. But the findings should remove the idea that DAC offers a short cut—along with geo-engineering—that could allow humans to continue emitting, business-as-usual, in the hopes that a future, far-off technology will solve the problem of atmospheric CO2 buildup.

“This report provides no support for arguments in favor of delay in dealing with climate change that are based on the availability of DAC as a compensating strategy,” concludes its authors, among whom is Princeton University’s Robert Socolow. Along with Stephen Pacala, Socolow co-authored the hugely influential “carbon wedges” analysis of the climate change challenge.

As Bill Sweet succinctly puts it over at IEEE Spectrum’s EnergyWise blog, the APS report “will take atmospheric capture of carbon off the policy agenda. This means, together with the collapse of an anticipated nuclear renaissance, that coming to terms with climate change will be more challenging than ever.”

Download a copy of the American Physical Society paper evaluation here, as a PDF.

Read the original here:  http://www.globalccsinstitute.com/community/blogs/authors/adamaston/2011/06/07/capturing-carbon-air-economics-make-it-non-starter-says

 

New Jersey pulls out of multi-state greenhouse gas trading regime – signs of 2012 election? | Global CCS Institute

In what could prove to be an early signal of carbon policy dynamics in the 2012 presidential race, the Regional Greenhouse Gas Initiative, the sole multi-state, cap-and-trade program operating in the U.S., was dealt a setback when the governor of New Jersey announced plans to exit the program late last month.

Against a backdrop of record fiscal deficits, New Jersey’s Republican Gov. Chris Christie announced plans to end the state’s participation in the two-year old program, calling it a gimmicky and costly failure.  The move culminated months of political pressure from Republican state legislators as well as campaigns sponsored by conservative national groups to exit the program.

This is not a deathblow to the program but the withdrawal of the second largest state economy in RGGI—pronounced like Reggie—hurts momentum to build low-carbon energy technologies, from renewables to carbon capture and storage (CCS) pilots.  If the governor’s decision survives anticipated legal challenges, it could set a precedent for others. Earlier in May, legislators in three other states rejected bills to pull those states out of the 10-state program too.

RGGI’s ten members, prior to New Jersey’s exit, are shown in dark green. Observer states and provinces are in lime.

As a policy experiment, RGGI was heralded as a potential template for the development a nation-wide carbon cap and trade program, and as such has emerged as a key target for opponents of climate change policy. If the program derails, green energy funding would suffer, too. To date, RGGI has conducted 11 quarterly auctions that have raised nearly $861 million from sales of carbon allowances. According to RGGI data, almost two thirds of the proceeds have been steered to fund energy efficiency and alternative energy technologies.

In the national context, Gov. Christie’s move provides a snapshot of the paradoxical politics of climate change in the U.S. at the moment. While announcing plans to exit the carbon-trading program, the governor simultaneously reversed an earlier position doubting the science behind global warming.
At the RGGI news conference, Christie also pledged to maintain the state’s commitment to renewables, to support the build out of more solar and offshore wind energy, while also pledging to prevent the construction of any new coal-fired power plans in his state. In early June, however, Christie slashed the state’s goal to develop renewable sources of electric power. From a minimum of 30% of all supply by 2021 — one of the most ambitious in the nation — the governor wants to aim for 22.5%, calling the new target more “achievable”.

The governor also released a report saying the state’s emissions had already fallen below goals for 2020, but discounted RGGI’s role in the shift. Quoted by Christa Marshall of ClimateWireNews, Christie said:

“We remain completely committed to the idea that we have a responsibility to make the environment of our state and world better,” Christie said. “We’re not going to do it by participating in gimmicky programs that don’t work.” He said New Jersey would depart RGGI by the end of the year.

“Reduced emissions have been due to increased use of natural gas, and the decreased use of coal. We’re seeing that the market, and not RGGI, has created incentives to reduce the use of carbon-based fuels,” Christie added.

Christie’s decision highlights the dramatic shift in the politics of climate in the Republican Party over the past decade. Keep in mind that RGGI was first championed by George Pataki, top Republican governor of New York in the early 2000s. That was a time, barely a decade ago, when Senator and eventual Republican presidential nominee John McCain also backed climate policy.

A decade later Christie, who has repeatedly denied any intention to run for president, is a darling of the Republican punditry.  And of the few Republican candidates who have officially declared a bid to seek the presidency, Mitt Romney also withdrew from RGGI while he was governor of Massachusetts—although it was before trading had begun and the state later re-joined.

Gov. Christie’s move was not a surprise. An early sign that New Jersey may pull our of RGGI came last year when, like a handful of other governors of deficit-strapped RGGI member states, Gov. Christie redirected $65 million raised from auctions of carbon credits for use in the general ledger.

All that said, RGGI continues to operate, with its next quarterly auction dated June 8. Nine states remain active in the trading pool. These are Connecticut, Delaware, Maine, Maryland, Massachusetts, New Hampshire, New York, Rhode Island and Vermont. Pennsylvania acts as an “observer”, along with three Canadian provinces along the U.S. north-eastern border: Québec, New Brunswick, and Ontario.

It’s worth noting there are two other multi-state climate initiatives in North America. Both are less evolved than RGGI and both face similarly rocky political prospects. They are:

  1. Western Climate Initiative, which includes 11 U.S. and Canadian regions, is larger than RGGI and is slated to come on line in 2015. Its goal: to lower greenhouse gas emissions by 15% by 2020, from a 2005 base.
  2. Midwestern Greenhouse Gas Accord includes six more heavily industrialized U.S. states and one Canadian province, but is the least evolved of the three.

Check out the original post here: http://www.globalccsinstitute.com/community/blogs/authors/adamaston/2011/06/06/new-jersey-pulls-out-multi-state-greenhouse-gas-trading