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Archive for the ‘Climate Change’ Category

Even as we struggle with heat waves, hurricanes, floods, wildfires, drought, and rising sea levels are as a result of climate change, the potential to sequester carbon in forests and soils offers hope. Humans have caused climate change by burning fossil fuels and disrupting the balance of nature, but there is an opportunity to restore these natural systems for carbon sequestration. Since we already used the carbon budget to keep global temperature increase to 1.5 degree Celsius, an action is needed to not only eliminate emissions but to recapture carbon dioxide that has already entered the atmosphere.

By stopping deforestation, and restoring degraded forests and soils we can combat climate change while improving biodiversity, soil productivity, and food security. Implementing better land management practices could be an important strategy to store carbon in the ground and lowering carbon emissions. Thus, curbing the rate of deforestation and improving land management and agricultural techniques should be a priority for policymakers at the federal and state levels in order to slow climate change, which has posed a significant threat to U.S agriculture.

Deforestation:

Forests are one of the largest carbon sinks and are currently absorbing and storing 450 billion tons of carbon. Forests are not only important in storing carbon, but they also play a significant role in preventing floods, supporting wildlife, moderating extreme temperature, presenting cultural values and providing recreation. However, after the industrial revolution, people started cutting down and burning trees for construction, shipbuilding, and energy producing, which resulted in turning a large amount of carbon back into the atmosphere. Human activities are the main reason for releasing carbon dioxide back into the atmosphere, including through deforestation.

Between 2001 and 2017, 5.57 gigatons of carbon (Gt) was released into the atmosphere as a result of tree cover loss in the United States. The U.S is cutting trees to make wood chips and wood pellets and export them from ports in the Southeast to Western Europe. Last year, Southern U.S. was identified as the largest exporter of wood pellets in the world as a result of a 70 percent increase in wood pellet exports from Southern. In 2017, the U.S lost 2.3 million hectares (Mha) of forest equivalent to 175 metric tons (Mt) of CO₂ emissions. Continued deforestation will neutralize all climate action efforts and strategies.

Afforestation and Reforestation Opportunities:

Afforestation is the process of planting forests in areas that have never been forested, while reforestation is the recovering of forests in areas where forests were destroyed.  Reforestation and afforestation could make an important contribution to curb climate change and to improve the quality of air if managed appropriately. Thus, afforestation and reforestation are identified as negative emissions options since they are able to remove CO2 from the atmosphere.  Afforestation, reforestation, and improving land management and conservation practices as a means of solution for removing CO2 from the atmosphere have several benefits to the society and environment. Planting new trees and recovering forests protects against soil erosion, helps retain soil moisture, increases biodiversity, and controls flooding. Also, these efforts can enhance agricultural productivity and develop resilient food systems. Moreover, planting trees has lower cost and environmental impacts compared to other negative emission technologies such as Bioenergy Carbon Capture & Storage.

Enterprise 50 Year Tree Pledge Surpasses 12 Million Plantings, 100 Reforestation Projects.Photo by Eterprise holdings

Afforestation and Reforestation:

The main problem is that planting forests is not an instant solution, since it takes time for seedling trees to be matured. Also, if afforestation is not properly managed, it can result in a reduction of local biodiversity, the modification of particular biomes, the introduction of non-native and potentially invasive species, and lost revenue from agriculture. Native grasslands that are altered to forests may not contain the same habitat for local species, and ill-managed reforestation efforts may result in the production of a monoculture (the practice of growing a single tree species) that lacks not only plant diversity but reduces the number of available habitat types for forest inhabitants. In addition, the application of nitrogen fertilizers would have several negative impacts on the environment. The production of nitrogen fertilizer releases a group of potent greenhouse gases known as nitrous oxides, along with CO2. Nitrogen pollution is identified as a threat to the biodiversity of species and biodiversity loss is a major environmental challenge

Soil Carbon Sequestration Opportunities:

Soil is a major sink of carbon and can store twice as much CO2 than is in the atmosphere. Unfortunately, farming currently plays a significant role in releasing a large amount of carbon into the atmosphere. As a result of an increase in the global population and the demand for food, commercial planting with the use of nitrogen fertilizer has increased, and frequent harvesting has resulted in reduced carbon levels in the soil. However, there are several land management practices which help promote inappropriate farming techniques. “Soil Carbon Sequestration” is one of the techniques which implements as a tool to remove CO2 from the atmosphere and store it in the ground. Thus, soil as a carbon sink can play a vital role in agricultural strategies to curb climate change and offset greenhouse gas emissions.

Agriculture, forestry and other land use techniques that store CO2 in the ground offer an opportunity to mitigate climate change. Farmers can help soil hold more CO2 by making sure crop residue and animal manure re-enters the soil. However, the amount of carbon that soil can hold depends on several factors such as types of soil, regional climate, and characteristics of soil microbes. Healthy soils with more organic matter can store carbon while providing agricultural and environmental benefits. Soil carbon storage directly benefits farmers by improving soil fertility, reducing erosion and increasing resilience to droughts and floods.

Conservation practices such as agroforestry, no-till agriculture, planting cover crops, forest farming, and silvopasture all increase the amount of carbon that can be sequestered in the soil.

  • In agroforestry, crops are planted between rows of trees while the trees mature. The system can be designed to produce fruits, vegetables, grains, flowers, herbs, bioenergy feedstocks, and more. Agroforestry helps improve land productivity with several potential benefits for the communities such as reducing soil erosion, increasing plant growth, climate change adaptation, and increasing food security.
  • “Forest farming” also is a way to grow food, herbal, botanical, or decorative crops under a forest canopy that is managed to provide ideal shade levels as well as other products.
  • “Silvopasture” integrates trees with livestock and their forages on one piece of land. The trees provide timber, fruit, or nuts as well as shade and shelter for livestock and their forages, help animals from the hot summer sun, cold winter winds, or a heavy rainfall.

Soil Carbon Sequestration Challenges:

Land Management Techniques: Forest farming & Agroforestry methods to keep CO2 in the ground & improve soil fertilizing

The main problem is that the initiatives are all voluntary and have not been adopted on a large scale. Farmers are experiencing several barriers in the way of implementing smart agriculture. For example, tilling the soil is a traditional practice for controlling weeds, and shifting to no-till technique requires changing farm equipment and using other weed-control methods. Therefore, farmers have to encounter with the high costs of altering farm equipment and the risk of lower yields in the short-term.  Furthermore, the benefits of soil carbon-rich take a long time to be viable and the long-term benefits of healthier crops and resilient communities are spread among societies. Thus, incentives and subsidies play a vital role in encouraging farmers to invest in cultivating healthier soils and split costs of shifting to new techniques since implementing the sustainable land management practices is critical to curb climate change and keep CO2  in the ground.

However, in the Midwest, for instance, around 50% of U.S farmland is operated by renters, and around 80% of agricultural land is owned by a non-farming landlord. Therefore, it would be difficult to encourage investments in soil health because renting tenants face short-term costs but might not receive the long-term benefits. Thus, policy-makers should provide tax incentives and subsidies for renters and non-farming landlords to be able to apply the land management practices. Since enhancing soil carbon by practicing land management techniques can prepare us to be well adapted for the negative impacts of climate change on the agriculture industry, there is an imperative need to invest in this solution and develop more helpful regulations to improve farmland productivity and communities’ resiliency.

Overall, fixing these barriers need providing the greatest financial and technical assistance and improving research and development (R&D) efforts as well as increasing private partnerships and offering incentives for farmers and renters. Improving the land management practices and the climate-smart agriculture is required a coordination and integration between various sectors dealing with climate change, agricultural development, and food security at the national, regional and local level. Local governments can provide tax credits for private companies to invest in different types of research with an emphasis on supporting soil carbon storage and to encourage them to offer useful consultant for farmers.

In Conclusion:

Well-managed natural systems carbon sequestration projects, along with the arrangement of sustainably produced timber, agriculture, and energy will produce numerous benefits including additional income for rural development, improve communities’ resiliency, and promote conservation programs. In order to improve climate change mitigation and sustainable development programs, governments must carry out the resolution of sustainability practices and oversee the implementation of these practices. The success of carbon sequestration projects will depend on the high carbon prices and aggressive emission reduction goals. Also, the political willpower plays an important role in prioritizing forestry activities and land management practices as part of mitigation portfolios. Care should also be taken to avoid unintended environmental and socioeconomic impacts that could threaten the overall value of natural systems carbon sequestration projects.

CASE STUDIES: (more…)

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What does it mean to make a climate action plan “Paris compliant”?  You may have heard this phrase, but do you really know what it means?  “Paris” refers to the Paris Climate Agreement of 2015, which every nation in the world except the United States is committed to. “Compliant” refers to the goals set in the agreement to keep global temperature increase to well below 2 degrees Celsius, and attempt to limit warming to 1.5 degrees, compared to pre-industrial temperatures.  So, what does that mean for a city wanting to do its fair share to avert climate crisis?

1.5 vs. 2 Degrees Celsius

The Paris Climate Agreement names two goals, but which one should we focus on – limiting warming to 1.5 or to 2 degrees Celsius?  Half of a degree might not sound like much, but, as NASA puts it, it’s a “big deal.”  That’s because the temperature increase won’t be spread out evenly over the area of the Earth or evenly throughout the year or time of day.  Some places and times will see much greater increases, resulting in more extreme weather. Heat-waves would be longer, rainstorms more intense, sea levels would rise further, tropical coral reefs would be totally destroyed, and agriculture would be hit harder.

There’s also a strong equity argument to be made for the 1.5 degree Celsius goal.  The Alliance of Small Island States (AOSIS) advocated for this more protective goal during the Paris Climate Agreement negotiations because their very existence is threatened by climate change.  Rising sea levels are already making some low-lying coastal areas uninhabitable, and a 2 degree increase would completely inundate many of the 44 low-lying AOSIS member countries.

Beyond the clear and present threat to low-lying nations, warming has been and will continue to be most pronounced in the tropics, which includes many poorer nations.  And poor people around the world will be most negatively impacted by climate change because the poor often live in more marginal areas – in flood plains or in drought-prone regions – and because the poor lack the resources to cope with extreme weather.

Global temperatures have already increased by about 1 degree Celsius and climate change is causing health problems.  As this trend continues, those without access to medical care or living in flood plains will struggle to cope.

Global Carbon Budget

Understanding the concept of the global carbon budget (which is really a greenhouse gas budget) is important.  Fundamentally, limiting warming requires limiting the total quantity of greenhouse gases released into the atmosphere, with emissions accumulating in the atmosphere year after year.

Determining an exact number is challenging and various climate models yield different results.  Some models indicate that the carbon budget for limiting warming to 1.5 degrees Celsius has already been exceeded.  The Intergovernmental Panel on Climate Change (IPCC) recognizes the need for additional analysis of the carbon budget to meet the 1.5 degree goal and is working on a report focused on this topic.

In the meantime, the carbon budget values provided in the IPCC 2013 AR5 Synthesis Report are the most comprehensive source of guidance because they include all GHGs from all sources, identify pathways to likely (defined as a two-in-three chance) meet the 1.5 and 2 degree Celsius goals, and are based on modeling out to 2100.  Using the IPCC budget for the 1.5 degree goal, and accounting for emissions since that report was released, the remaining carbon budget at the start of 2017 was 162.02 gigatonnes.  Limiting emissions to this amount would give us a 66% chance of limiting warming to 1.5 degrees Celsius.

A 66% chance of success also translates to a 34% chance of failure.  Failure to preserve a livable climate.  Ideally, we would aim to keep cumulative GHG emissions well below this budget to increase our chances of keeping to 1.5 degrees Celsius of warming.

Negative Emissions

Past inaction to reduce GHG emissions now makes negative emissions, or carbon sequestration, necessary to meet the goal of limiting warming to 1.5 degrees Celsius and likely even to meet the 2 degree goal, but the assumed scale of such efforts can easily be overestimated.  The vast majority of the climate models relied on by the IPCC – and therefore, the underlying Paris Climate Agreement – assume massive negative emissions.  While there are existing technologies and techniques for achieving negative emissions, all face significant challenges, including cost, other impacts on the environment, and use of land needed to feed the growing world population.  Recent research suggests that negative emissions technologies are more limited than climate scientists have assumed in their modeling.

GHG Emissions Reductions Goals for U.S.  Cities

The realities of the carbon budget and limits of negative emissions technologies makes a rapid reduction in greenhouse gas emissions necessary to avert climate crisis.  While meeting the goals set in the Paris Climate Agreement is still possible, there is no time to waste on inactionNet zero global GHG emissions must be reached by around 2050, and substantial near-term emissions reductions are critical.

C40 has developed a roadmap, called Deadline 2020, for how cities can translate these global goals and carbon budgets to local goals and actions.  The emissions reduction curve for a given city depends on how much greenhouse gases the city emits and how much wealth the city has.  Compared to the global average, U.S. cities are high emitters and have high wealth (defined as greater than $15,000 per capita gross regional product per year).  The Deadline 2020 roadmap calls for such cities to get on a “steep decline” GHG emissions trajectory, with emissions reaching zero before 2050.  The roadmap makes it clear that wealthy, high emitting cities, such as those in the U.S. must take significant action prior to 2020 to make it possible to achieve the 1.5 degree goal.

The good news is that more and more cities are engaging in climate planning.  In Texas, that includes Austin, San Antonio, Houston, and hopefully soon Dallas.  While each city has its own challenges and opportunities, the C40 Deadline 2020 roadmap can and should be used to set fair, science-based goals.

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As global temperatures continue to rise along with CO2 emissions, leaders in need of solutions should be cautious when considering the potential of bioenergy with carbon capture and storage (BECCS).  While the wholesale success of these technologies was assumed in many of the climate models used in developing the Paris Climate Agreement in 2015.

In the 2015 United Nations Climate Change Conference, the world agreed on implementing greenhouse gas mitigation plans which focus on producing negative carbon dioxide emissions to help curb climate change.

Illinois Industrial Carbon Capture and Storage Project. Capture CO2 from ADM’s Decatur corn processing facility and store it underground.

Bioenergy with carbon capture and storage (BECCS) facilities generate electricity by burning trees and crops that have taken CO2 from the atmosphere throughout their lifetime. When the biomass is burned, BECCS facilities capture the CO2 emissions and store them or, more often, use CO2 in order to enhance oil recovery (EOR). BECCS is one of the technologies the potential to achieve negative emissions if easy-to-grow feedstocks, such as switchgrass, are grown with sustainable practices and the captured CO2 is sequestered. However, these conditions don’t currently exist at commercial facilities.

BECCS Case Study: Illinois Industrial Carbon Capture and Storage Project

In April 2017, the U.S Department of Energy (DOE) announced that the Illinois Industrial Carbon Capture and Storage (ICCS) project at Archer Daniels Midland Company’s (ADM) Decatur corn ethanol facility had begun operations by injecting carbon dioxide into a large saline reservoir. The ICCS project stores more than 1 million tons of CO2 a year. The project captures CO2 from ADM’s Decatur corn processing facility, and stores it almost a mile and a half underground. The total project cost is $207.9 million and it has received a cost-share agreement of $141 million investment from the Department Of Energy. The project team members include ADM, Schlumberger Carbon Services, Illinois State Geological Survey (ISGS), University of Illinois, and Richland Community College (RCC). The technology demonstrated for this project aimed to help the development of the regional CCS industry (i.e., enhanced oil recovery in the depleted oilfields in the Illinois Basin).

Although the main purpose of BECCS technology is to reduce greenhouse gases and help combat with climate change, practically, CO2 has been captured in order to enhance oil recovery, which will result in more CO2 in the atmosphere. As the world’s focus is on keeping global temperature below 2 degree Celsius, using carbon capture storage (CCS) and BECCS in this way will perpetuate the use of fossil fuels. Also, emissions from the transportation of feedstock and the use of nitrogen fertilizer for growing crops could be a big challenge and accelerate the trend of global warming especially associated with ozone destruction.

The Illinois Basin Decatur facility and the EBCCS plant as a whole emit more CO2 than the BECCS plant has been designed to capture. The graphics info provided by Carbon Brief shows that the total CO2 emissions have been emitted by Decatur facility over 2.5 years of the operation was 12,693,283 tons of CO2. However, the EBCCS plant only absorbed 2,095,400 tons of CO2 which means that Decatur facility as a whole has emitted 10,597,883 tons of CO2 even with BECCS capacity. Thus, this project failed to fulfill the purpose of reducing carbon and curbing climate change.

The Illinois Basin Decatur Project. By Rosamund Pearce for Carbon Brief.

Caption: The Illinois Basin Decatur Project.  By Rosamund Pearce for Carbon Brief.

Challenges and Concerns of BECCS Projects:

  • High Cost of Capturing and Storing Carbon: It costs $100 to capture a ton of CO2 for a biomass plant. Whereas, fossil fuel plants are capturing carbon for about $60 a ton. This difference is based on varying bioenergy feedstock prices; energy production process; and capture technology. Also, transporting large amounts of biomass long distances to the storage site would significantly add to the cost of BECCS, since biomass tends to have a lot of weight relative to its energy.
  • Transporting CO2 to the reservoirs via pipelines or trucks: The transportation networks are costly and also turn more CO2 back into the atmosphere. More infrastructure – such as pipelines – would need to be built, which increases the cost of BECCS and indirectly results in more emissions through the construction process. Also, CO2 leakage from pipelines or storage sites could endanger people, harm marine ecosystems, and threaten freshwater ecosystem. Navigating the property rights of local communities can also be a challenge.
  • Effects of increased fertilizer use, such as nitrogen: Nitrogen fertilizers can be leached into the groundwater and washed into waterways, resulting in serious health, environmental, and economic damage. Nitrogen fertilizers applied in agriculture can add more nitrous oxide to the atmosphere than any other human activity. Nitrous oxide also moves into the stratosphere and destroys ozone which could result in increasing global heat. Nitrogen pollution is identified as a cause of decline in native species and is a threat to biodiversity for vertebrate, invertebrate and plant species. A study found 78 federally listed species identified as affected by nitrogen pollution. Use of fertilizer nitrogen for crop production also influences soil health, by reducing organic matter content and microbial life, and increasing acidity of the soil.
  • Water concerns: Agriculture and power generation are highly water intensive. In order to produce 1 ton of ethanol, 3.5 t of CO2 and 5 t of H2O is needed, which means that more than 21,000 t of CO2 and 300,000 t of water vapor are consumed each year. However, more than 3 billion people are already affected by water scarcity so it is a critical challenge in utilizing BECCS technology.
  • Food Scarcity: food prices would increase as a result of changes in land use. Also, since climate change has already threatened the crop yields harvest, sudden changes in the weather could result in food shortage or even famine in some regions. Altering lands to a specific crop yield would affect the land quality and may result in regional resource shortages.
  • Geological storage sites for CO2: In the fertile Midwest of the U.S., croplands are too far from geologic storage to be a viable location for BECCS in the near-term. There are relatively few pipelines in place for transporting CO2 and the long-distance transportation of large volumes of captured CO2 is expensive, particularly if many small pipelines have to be built. Biomass could be transported to sites where CO2 storage is available, but that would significantly add to the cost of a BECCS project.
  • Land Use challenges: Could displace or expose small farmers to the volatility of world markets. Also, as a result of changing land applications, soil erosion, and degradation could happen and soil would lose its fertility. Poor management of bioenergy crop production can result in soil carbon loss from direct and indirect land use changes and significantly affect the net amount of CO2 removed by BECCS. In addition, land rights of farmers & ranchers should be considered as important challenges as well.
  • Cost of Ethanol Production: Depending on a cost of a barrel of oil and production cost of gasoline refining, ethanol can either increase or slightly decrease the cost of a gallon of gasoline.

Overall, even though the U.S has a large potential for geological storage sites, there is still a need for transportation systems for either biomass or CO2 for the large-scale deployment of BECCS. Also, concerns associated with the land, water, and fertilizer use that would be required at the large-scale deployment of BECCS make the long-term economic viability of this technology uncertain. Tax incentives such as 45Q might cover some parts of the related costs, however, the health, environmental, and economic impacts of this project on the society is still unclear as well.

Overly optimistic assumptions about quickly achieving negative emissions on a large scale are dangerous. The world carbon budget is running out for 2 degree Celsius and we have already used the 1.5 degree’s carbon budget. While investments in BECCS are needed, these technologies do not give us a license to postpone eliminating emissions from other sources. And BECCS is only a solution if sustainable agriculture practices are employed, CO2 emissions are permanently sequestered and not used for oil recovery, and project sites are carefully selected to reduce emissions from transportation.
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Earlier this month, I visited Exploration Green, a former golf course that local residents have helped to transform into a storm water detention basin and green space.

Located in Clear Lake, TX, Exploration Green finished its first phase in March 2018, and has 3 more phases to go. Yet even before Phase 1 was completed, Exploration Green is already paying off for residents of Clear Lake.

Hurricane Harvey

Rains from Hurricane Harvey hit the Clear Lake area strongly, and the detention basin, then under construction, held 100 million gallons of rainwater and prevented about 150 homes from being flooded. Exploration Green serves as a model for what Houston and other flood-prone areas can do to manage storm water.

Wetland Restoration

Profound development in the greater Houston area led to the loss of 20% of Harris County’s freshwater wetlands between 1990 and 2010, a loss of 15,855 acres. And as Harris and surrounding counties continue to be developed, more and more freshwater wetlands will be lost.

Wetlands serve an important function. They clean polluted runoff that enters Galveston Bay, and without them, the health of Galveston Bay will suffer.

Exploration Green has been working with Texas A&M’s Texas Coastal Watershed Program to design and build storm water wetlands that can enhance the environment and provide habitat for the many creatures that call the Clear Lake area home.

Putting It All Together

A recent report in the journal PLOS ONE states that the cost of flooding along the Gulf Coast will range from $134 and $176 billion by 2030, and the annual risk of flooding in the region is expected to more than double by 2050. This is due to climate change, land subsidence, and the concentration of assets in the coastal zone.

Nature-based solutions like the storm water detention basins and wetlands at Exploration Green are a cost-effective way to help mitigate flooding in communities in Houston. Communities can and should used them alongside policy measures and other infrastructure improvements to enhance our resilience to floods.

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Carbon Engineering’s direct air capture facility sucks CO2 directly from the atmospheric air. – Carbon Engineering

To maintain climate, we need to cut greenhouse gas – especially carbon – emissions down to zero. The more greenhouse gases that are released, the hotter our planet will be. If we are seeking to keep the global temperature below 1.5-2 degree Celsius, we need to find a way to reduce CO2 emissions. Direct Air Capture (DAC) is a technology which sucks CO2 out of the atmosphere by using large fans that move air through a filter to generate a pure CO2 stream. Depending on the application of the captured CO2, DAC can be either a “carbon recycling” or “carbon removal” technology. Carbon recycling refers to the process of using CO2 produced by DAC as fuel, or in other ways which will release CO2 back into the atmosphere, such as to carbonated beverages. Carbon removal requires CO2 to be stored underground or used in materials that do not allow CO2 to be released into the atmosphere, such as in cement or plastics.

DAC Carbon Recycling Case Study: Carbon Engineering

Recently, “Carbon Engineering,” a Canadian-based company leading the commercialization of direct air capture technology, have been working on Air to Fuels project, which uses renewable electricity to generate hydrogen from water, and then combines it with CO₂ captured from the atmosphere to use it as an input to produce synthetic fuels that can substitute for diesel, gasoline, or jet fuel. DAC’s cost at a commercial scale is not exactly determined yet. However, the latest estimate cost announced by Carbon Engineering is a range cost from $94 to $232 per ton for capturing CO2 and they hope to produce fuels from the Air2fuel project for less than $1.00 per litter, once it scaled up.

DAC Carbon Removal Case Study: Climeworks

Direct air capture unit along with the cooling towers of the geothermal power plant in Hellisheidi, Iceland. (Climeworks/Zev Starr-Tambor)

Swiss firm Climeworks recently launched the world’s first “commercial” direct CO2 capture plant at Hinwil, Zurich. Climeworks has been working on CO2 for carbonated drinks and renewable fuels project through the partnership with CarbFix which working on the project of dissolving CO2 into drinking water. Also, the Gebrüder Maier fruit and vegetable company uses the captured CO2 to boost the growth of cucumbers, tomatoes, and aubergines in its large greenhouses. However, the most interesting project which is designed to be a carbon removal project is happening right now! Climeworks recently launched a pilot project in Iceland which is a geothermal power plant with direct air capture technology. The facility is capturing 50 metric tons CO2 from the air each year, which is equivalent to a single U.S household or 10 Indian households. The CO2 captured in order to convert the emissions into stone. Thus, they’re making sure that CO2 doesn’t escape back into the atmosphere for the next millions of years.

Climeworks / Julia Dunlop Carbon capture from ambient air goes commercial

Pros of DAC:

  • Full-scale operations are able to absorb significant amounts of carbon, is equivalent to the annual emissions of 250,000 average cars
  • DAC system can be sited anywhere which reduce the cost of transporting CO2 to the sequestration sites
  • DAC can be scaled easily and has a relatively small land footprint in comparison to other carbon removal technologies such as Bioenergy Carbon Capture Storage (BECCS)
  • DAC system produces fuels with 100x less land use footprint and less water use than biofuels.

Cons of DAC:

  • Energy Intensive: Direct air capture is a fairly energy intensive process because the concentration of CO2 in ambient air is relatively low. Separating CO2 from the air is challenging since it takes a significant amount of energy and air to separate and concentrate CO2 in the atmosphere. Thus, large volumes of air must be processed in order to collect meaningful amounts of CO2
  • Very Expensive: Currently, it is not a financially viable option because it is very expensive. The cost of CO2 captured from the atmosphere ranges between $94 and $232 per ton according to Carbon Engineering estimate
  • Water consumption concern: One study estimates for removing 3.3 gigatons of carbon per year, DAC could expect to use around 7.925e+13 gallons of water per year (assuming current amine technology, which is what Climeworks uses). This is equivalent to 4% of the water used for crop cultivation each year. Carbon Engineering using sodium hydroxide that would use far less, but this, in turn, is a highly caustic and dangerous substance
  • Revenue Opportunities: Revenue opportunities for DAC carbon removal systems depend on carbon markets and regulations. Without high enough carbon prices, DAC systems are likely to find the largest revenue opportunities by providing CO2 for manufacturing fuels, enhanced oil recovery, greenhouses and carbonated beverages, as DAC systems can be sited anywhere.

Climeworks direct air capture plant founders Christoph Gebald and Jan Wurzbacher onsite. Climeworks / Julia Dunlop

Policy Approach:

There have been some policies that provided a shift toward greater development and deployment of carbon dioxide removal and recycling. In February 2018, the U.S budget bill passed by Congress which extends and reforms the federal Section 45Q tax credit. 45Q provides credits for businesses that use CO2 for enhanced oil recovery (EOR) and for CO2 injection into underground geologic formations. Mostly, the 45Q tax credits benefits fossil fuels industry. Based on the bill, any new fossil-fuel power plant or carbon-dioxide producing industry that commences construction before 2024 is eligible for tax credits for up to 12 years. The tax credits offered up to $35 per metric ton of carbon dioxide captured if the CO2 is put to use (pushing out oil from depleting fields is the most popular use) or up to $50 if it is simply buried in underground storage. Hence, the bill benefits fossil fuels companies at a lower cost of carbon capture and help fossil fuels companies expand oil production, and continue to build coal plants. Thus, the carbon removal companies are not willing to sequestrate carbon when there is a market for selling it. The only way to make money off sequestration is if the government is directly subsidizing it or if there is an extremely high carbon price. Currently, there is no carbon price anywhere in the world great enough to make sequestration profitable. At present, carbon is trading at a low price in the global market compared to the cost of storing it underground.

However, tax credits could make negative emission projects more financially attractive and more economically viable. Based on the incentives provided by 45Q bill, direct air capture could be a critical tool for CO2 removal since it has a countless potential for removing carbon and reuse it. Since the high cost of the technology in pilot projects has been an obstacle to a large-scale implementation, hopefully, new regulations and tax credits such as 45Q bill ease the process and lower the costs. Although the tax credit will not cover the full cost of these technologies, it will make a noticeable reduction in the operating cost.

Tax credits and regulations mean greater opportunities for developers and suggest positive movement in wider efforts to stem climate change, as carbon capture and storage is widely considered to be a significant element of addressing climate change. Recently, several private investors and fossil fuels companies have started investments in DAC technology. Especially, the oil and coal industry since the captured CO2 can be used for Enhanced Oil Recovery (EOR). However, utilizing DAC technology to develop EOR would neutralize any efforts regarding climate mitigation actions.

Direct air capture could hold the promise of capturing CO2 from the atmosphere. However, since there is an economic benefit of using CO2 to make fuels or for enhanced oil recovery, fossil fuels industry are making money off the technology. In a time that there is relatively little carbon budget left to keep the world temperature below 1.5C or 2C, nations need to focus on cutting CO2 emissions rapidly by shifting their reliance away from fossil fuels to the renewable energy, in particular. (more…)

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Petra Nova, the world’s largest post-combustion carbon capture project, has been in commercial operation at the W. A. Parish Plant in Thompsons, Texas, southwest of Houston, since January 2017. The project offers no hope for combating climate change.

Petra Nova Facility

The Parish station has 10 generating units, but only unit 8 has been upgraded with carbon capture technology, and thus, the other 9 units are still emitting CO2. The project was supposed to divert 40% unit’s exhaust into a post-combustion capture (PCC) system, which designed to capture 90% of the CO2 in that stream. However, once the emissions from the gas-fired turbine that powers the carbon capture system and the emissions from the additional petroleum products resulting from enhanced oil recovery are taken into consideration, the total impact of the carbon capture system is actually an estimated 2% increase in CO2 emissions.

The Petra Nova has retrofit cost $1 billion and benefitted from a $190 million Clean Coal grant from the U.S. Department of Energy. This huge amount of money has been invested to build a new coal power plant and enhance oil recovery by injecting 5,200 tons of carbon dioxide per day at West Ranch. However, NRG’s CEO has claimed that the Petra Nova CCS project “made both strategic and economic sense at $75 to $100 a barrel” and that “obviously [with West Texas Crude selling for less than US$50 a barrel], it does not currently make economic sense.”

Fossil fuel industries have promoted the use of CCS technology as a solution to enable the continued burning of fossil fuels for electricity generation. The coal industry has been seeking to increase its profit by lobbying Congress to get subsidies even though they are aware of the negative impacts of burning fossil fuels on the human health and climate change. Moreover, fossil fuel industries have influenced the EPA to reduce penalties and long-term liability to increase the profitability of CCS projects at the expense of public health and the environment.

Petra Nova Carbon Capture

Health and Environmental Impacts of CCS Technologies Include:

  • Power plants that are capable of capturing carbon require 15-25% more energy than conventional plants in order to capture and store CO2. The mining, transportation, and burning of the additional fuel (usually coal) needed for CCS produces more CO2 emissions.
  • Particulate matter and Nitrogen Oxide are both expected to increase as a result of the additional fuel consumption in order to capture carbon dioxide. Particulate matter is identified by the World Health Organization to be the deadliest form of air pollution as its ability to enter the respiratory system
  • Due to the degradation of the solvents in the process of capturing carbon, Ammonia is expected to increase, which can lead to form particular matter in the atmosphere
  • Possible damages or any leakage in the pipeline or storage reservoir would result in serious environmental impacts
  • Gradual leakage in the storage site can damage fresh groundwater resources if the incorrect storage site is selected or the site is not prepared correctly
  • Injecting CO2 into aquifers can cause acidification of the water and increase its ability to break down the surrounding rocks, aggregate the potential for leakage into the soils or water table, which could worsen the impact of climate change in ocean sinks as a major reservoir of carbon dioxide.

Since burning fossil fuels is the main reason for global warming, do we really need another coal power plant with CCS capability? Isn’t better to allocate federal tax credits and incentives for building energy storage or solar/ wind farms to generate electricity?

Recently, the average cost of solar energy has decreased by $2.71 to $3.57 per watt and the wind energy cost has dropped to around $30/MWh to $60/MWh in 2017. Solar battery energy storage technologies have also advanced and costs have declined by $400 dollars per kilowatt hour (kWh) to $750/kWh. Therefore, it is more viable and profitable to invest in the clean renewable energy to cut CO2 emissions instead of building new coal power plants with CCS capability.

As a result of a growth in the world population and energy demand, greenhouse gas emissions are increasing and have accelerated climate change. In order to combat climate change, nations must shift their reliance away from fossil fuels to renewable energy instead of applying new technologies to produce “clean coal.” Relying on carbon capture and sequestration (CCS) technologies to rescue the world from climate change instead of focusing action on reducing greenhouse gas emissions is a dangerous gamble.

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SAN ANTONIO, Texas – Yesterday, a few days after the one-year anniversary of President Trump announcing US withdrawal from the Paris Agreement, the Climate Action SA coalition called on the City of San Antonio to establish significant goals to help San Antonio fight climate change.

Climate Action SA proposed the following goals for CPS Energy, our city-owned public utility: CPS Energy electric generation Coal-Free by 2025 and Carbon-Free (no fossil fuels) by 2030. Significant reduction in the reliance on fossil fuels can be achieved with aggressive investment in energy efficiency, demand response, renewable energy and energy storage.

These goals for CPS Energy put the city on a path to achieve of a goal proposed by Climate Action SA for city-wide greenhouse gas emissions to be reduced to net-negative by 2050 or sooner, following a path that prioritizes near-term reductions. Net-negative means that community activities would pull more greenhouse gases out of the atmosphere than they emit into it. This is assumed by almost all of the climate models used in the development of the Paris Climate Agreement.

Diana Lopez, Southwest Workers Union - photo by Angel Amaya

Diana Lopez, Southwest Workers Union – photo by Angel Amaya

“The climate community in San Antonio is taking the right step towards including the neighborhoods most affected and creating solutions that are just, resilient, and keep the ecosystem of neighborhoods strong,” says Diana Lopez of Southwest Workers Union. “We are taking this beyond the Paris Climate Agreement and localizing action in San Antonio.”

The public health benefits of phasing out fossil fuels are well known. In addition to releasing carbon pollution which leads to climate change, coal and fracked gas produce pollution that creates ozone (smog) and particulate matter (fine soot), impacting vulnerable populations here at home the hardest.

“San Antonio is now failing federal air quality standards for ozone,” points out Peter Bella of imagineSanAntonio. “We insist on reductions in both carbon- and ozone-causing pollution, and SA Climate Ready provides the path.”

San Antonio can be a leader, but we don’t have to do it alone. Cities around the world are taking action to address climate change. The goals supported by the Climate Action SA coalition are necessary to avoid the worst of climate change and reflect the commitments in the resolution passed last June by Mayor Nirenberg and the San Antonio City Council to support the Paris Climate Agreement.

Keeping global temperature rise to between 1.5 and 2 degrees Celsius requires massive greenhouse gas reductions in the coming decade. The good news is that this transformation not only reduces local air pollution – it will also create new jobs and tax revenues.

Briauna Barrera, Public Citizen - photo by Angel Amaya

Briauna Barrera, Public Citizen – photo by Angel Amaya

“Climate change is an existential threat and what we do in the next couple of decades will determine the fate of billions of people and future generations,” says Briauna Barrera of Public Citizen. “We need to ground ourselves in urgency. We need to be compelled into rapid, collective action to preserve a livable planet.”

Although ending our reliance on fossil fuels for power generation is key to solving the climate crisis, we must also be moving aggressively in other areas like transportation and solid waste. The coalition also plans to make recommendations on these topics soon.

The Climate Action SA coalition consists of 35 nonprofit organizations working together to support the creation and implementation of a robust climate action and adaptation plan for San Antonio, developed and implemented with strong community engagement. The coalition has a strong focus on protecting San Antonio’s most vulnerable communities from extreme weather and pollution, and ensuring that all members of the community can benefit from climate solutions.

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https://www.csb.gov/arkema-inc-chemical-plant-fire-/

U.S. Chemical Safety Board: Arkema Inc. Chemical Plant Final Investigation Report

Arkema Inc. knew about the risk of flooding at its Crosby facility.

That’s the conclusion of a new report by the U.S. Chemical Safety Board (CSB), which comes nearly a year after a fire and explosion at the facility injured twelve first responders.

Hurricane Harvey caused catastrophic flooding at Arkema Crosby, leading to the failure of backup generators and an explosion of organic peroxides on the premises.

The CSB report details the investigation and outlines best practices for future events. While the rainfall that occurred during Harvey was extraordinary, the report notes the rise in extreme weather events and Arkema’s location in the 100-year floodplain.

The report also finds that Arkema cannot claim ignorance of its precarious situation. A year before Harvey, Arkema’s insurer Factory Mutual Insurance Company (FM Global) notified the company of its flooding risk.

The CSB recommends more robust guidance to allow industry to better evaluate flood risks. The report also recommends that the EPA take more steps to limit risk from reactive hazards.

Chemical safety reform is needed to protect communities like Crosby. We shouldn’t be in harm’s way.

 

View the final investigation report at https://www.csb.gov/arkema-inc-chemical-plant-fire-/. 

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Six years ago, Public Citizen and our partners founded the Healthy Port Communities Coalition (HPCC), which advocates for the health and well-being of residents of communities on the Houston Ship Channel. The coalition also includes Air Alliance Houston, the Coalition of Community Organizations, and Texas Environmental Justice Advocacy Services.

Recently, we had an opportunity to convene the HPCC in Houston to discuss our work. One purpose for the trip was to introduce our new Press Office, Angel Amaya, to Port Houston. Port Houston is the largest exporting port in the nation and the center of Houston’s petrochemical industry.

We started at Morgan’s Point Cemetery, the oldest continually operated cemetery in Harris County. It is the small green square in the middle of the photo above. Surrounding the cemetery is the Barbours Cut terminal and turning basin. This is one of two container terminals at Port Houston. Goods from all over the world come into Barbours Cut on very large vessels packed with shipping containers. One ship can carry as many as 4,500 containers. (There are even larger ships, the so-called “Post-Panamax” ships, that can carry as many as 9,000 containers, but they are too large to enter Barbours Cut.) The containers are offloaded by cranes (top of photo) and moved on to trucks and trains to be shipped around the country. Many of the engines that operate at a terminal like Barbours Cut–including marine vessels, cranes, short-haul equipment, drayage trucks, and locomotives–use polluting fossil fuels such as diesel. The Healthy Port Communities coalition advocates for replacement of these polluting vehicles with newer, clean technologies. Many funding opportunities are available for these replacements, including the Diesel Emissions Reduction Act and the Texas Emissions Reduction Plan.

A container terminal like Barbours Cut is probably what most people think of when they think of what goes on at a port. There is plenty of container traffic at Port Houston, but in fact this represents only about 15% of the total traffic.

The rest of the traffic consists of bulk products, most of them petrochemical. We visited many of the industrial facilities that produce these petrochemical products. One of the most infamous petrochemical facilities on the Houston Ship Channel is the Pasadena Refinery, owned by the Brazilian national oil company Petrobras.

Pasadena Refinery is notoriously troubled. In recent years, its woes have included explosions with injury, protests by environmental groups and concerned neighbors, lawsuits by environmental groups, and international bribery scandals. It was recently announced that Petrobras is trying to sell the refinery, although it is unclear who would want to buy such a dangerous liability.

We also visited Hartman Park in the community of Manchester, sometimes referred to as “Houston’s most polluted neighborhood.” Our friends at t.e.j.a.s. have advocated for years for the people of Manchester. When our new Press Officer Angel visited Hartman Park, she was struck by this mural:

Created by children living in Manchester, the mural perhaps unintentionally shows how intrusive polluting facilities are in the lives of people living on the Houston Ship Channel. An idyllic scene of children playing in a park is flanked by industrial stacks spewing pollution into the air. The mural is a stark reminder of what life is like for some of our most vulnerable neighbors in certain parts of Texas.

The Healthy Port Communities Coalition is advocating on the behalf of those neighbors who live in Houston. We finished our trip to Houston with a meeting of HPCC member groups. One topic of discussion was the Chairman’s Citizens Advisory Council (CCAC). The CCAC was created after the Port of Houston Authority Sunset Review in 2013. Public health advocates had asked for representation on the Port Commission itself, with the addition of a new seat representing community interests. That recommendation was rejected by the state legislature, although certain other reforms were implemented. After the sunset review was complete, some advocates continued to call for more representation of community interests at the port. Longtime port community advocate Sen. John Whitmire joined this call, asking the new Port of Houston Authority Chairman Janice Longoria to act. Chairman Longoria responded by creating the Chairman’s Citizens Advisory Council.

The Healthy Port Communities Coalition has had members and allies on the CCAC since it was created. Although we appreciated the move, in the years following we have not seen the CCAC be an effective body advocating for public health protections. This is in part due to the manner in which it was created and operates. In order to improve the CCAC, we have compiled a list of recommendations:

 

  1. The existence of the Chairman’s Citizens Advisory Council (CCAC) should be codified in statute, regulation, or by memorandum.
  2. The chairs on the CCAC should be designated for particular constituencies or neighborhoods, including the chair already designated for the Healthy Port Communities Coalition.
  3. The representative for each chair should be selected by each corresponding constituency, via a process of their choosing.
  4. The CCAC should have the authority to set agenda items for CCAC meetings.
  5. CCAC members should be given time to make presentations at CCAC meetings. Port Houston should be required to formally respond to any presentations and answer any questions posed.
  6. The CCAC should have the authority to make information requests and pose questions to Port Houston. The Port Commission should be required to respond.
  7. The CCAC should be given monthly opportunities to report on its work to the Port Commission.
  8. The CCAC should be able to recommend studies to be conducted by Port Houston. If Port Houston declines to undertake a recommended study, it should clearly state its rationale for doing so.

To her credit, Chairman Longoria did implement #7 above at the request of one of the CCAC members (a t.e.j.a.s. employee). But for the most part, the CCAC still functions as an isolated body whose members serve at the pleasure of the chairman. We believe that the above reforms would make the body a more effective advocate for portside community residents. This would lead to a port that took better care of its neighbors and served as a better steward of public health and the environment.

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Texas cities are stepping up to take on the climate change crisis.  Austin was an early leader, but now San Antonio, Dallas and Houston are in the game too.  Instead of waiting for leadership at the federal or state level, these cities are taking action.

Taking action at the city level makes a lot of sense.  Cities are responsible for over 70% of global carbon dioxide emissions.  When cities choose to act, they are often able to reduce emissions quicker than federal or state governments.  Cities can tailor solutions to address specific local challenges, while also stepping up to support broader changes that are needed.

So how do cities take action?  Any policy or program that reduces emissions is helpful, but the most effective way for cities to reduce emissions as much as possible is to develop a community-wide climate action plan.

There are several steps to this process:

  • GHG Inventory: Conduct a greenhouse gas inventory, following the Greenhouse Gas Protocol. This is an accounting of all emissions that the community is responsible for.  At least scope 1 and 2 emissions should be included, and ideally scope 3 emissions as well.
  • GHG Reduction Goal: Establish a goal for reducing greenhouse gases. Establishing interim goals is helpful.
  • Stakeholder Process: Establish a community stakeholder process to develop recommendations. This should include outreach to the community at large.
  • Identify Actions: Identify actions to reduce greenhouse gas emissions throughout the community to meet the goal. Estimate expected emissions reductions, cost and time needed to implement for each action item.  Identify co-benefits.  Prioritize the list based on these factors.
  • Schedule Reports & Updates: Establish a schedule for progress reports and updating the climate action plan.
  • Release Draft Plan: Release the draft climate action plan for public comment.
  • Adopt Plan: Adopt the climate action plan.
  • Implement: Begin implementation of the plan, starting with priority items.
  • Report & Update: Report on progress made, as well as challenges at least as frequently as scheduled. Update the plan as scheduled, or more frequently, if needed.

 

Let’s take a look at where each of these Texas cities are in this process: (more…)

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Look for this tear pad display at the register when you check out at any Texas HEB store.  Take this opportunity to make donations when you check out with your groceries.  Donations go to Earthshare, which supports Public Citizen.

Making a donation at the register when you check out with your groceries at any HEB store in Texas funds environmental organizations in the state.  This funds Public Citizen’s Texas office as well as several of our partner organizations, such as EDF, Texas Campaign for the Environment, Air Alliance Houston, and Sierra Club (among many).  If you want to help us and the many other organizations that are working to keep the Texas environment clean and healthy for all Texans, make a donation before Tuesday, May 1st.

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We will be at EarthX in Dallas this weekend giving a talk on the role of the mainstream media in covering the climate crisis.

Not going to EarthX? No worries – we are live streaming the presentation on our facebook page here on Saturday at 12 pm CT.

@publiccitizentx

 

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April 20-22, 2018 – Fair Park in Dallas, Texas!

 

Join a panel of local DFW citizens as they talk about their experience in getting letters to the editor of the Dallas Morning News printed and DMN’s response to Climate Change on Sunday, April 22nd from 2 to 3 pm on the Discovery Stage in the Automobile Building in Fair Park.  Public Citizen’s Rita Beving will be moderating this discussion.

And stop by and visit our booth.  We will be in the Centennial building in spaces 5317-5319.
If you are planning to attend, you can make navigating the multiple events and exhibits easier with the EarthX 2018 official mobile application which you can get on google play or apple itunes.  We look forward to seeing you at Fair Park for Earthday!

If you are at the Expo on Saturday, be sure to include on your event list one of the speaker series on Saturday, April 21st from 12 noon to 1:00 pm on the Centennial Discovery Stage.  This will feature David Arkush – Managing Director, Public Citizen’s Climate Program – as he participates on a panel moderated by Betsy Rosenberg, an environmental talk show host and producer of The Green Front on Progressive Radio Network.

Wake Up and Smell the Carbon!
The Role of Mainstream News Media in Covering Climate and Environmental News.
Saturday, April 21st from 12 noon to 1:00 pm on the Centennial Discovery Stage

This and much, much more is happening at EarthX.  Check out the Expo Guide here to make the most of your visit to this year’s EarthX event.

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This week marks the six month anniversary of Hurricane Harvey, a catastrophic storm that killed 88 people and caused about $125 billion in damages. Scientists have shown that Harvey’s strength was fueled in part by climate change.

Houston Mayor Turner has voiced concerns about climate change and pollution, recently through an op-ed published in the Huffington Post entitled “Cities Must Get Creative In The Fight Against Air Pollution.” In this piece, Turner says that cities must address the poor air quality that too often disproportionately impacts low-income communities. Specifically, he states that he will protest permits for new concrete batch plants. Turner also plans to address climate change through using renewable energy to power city operations and through electric vehicle adoption.

Yet, the city of Houston can do more. The Houston Climate Movement came together last year before Harvey because we know that Houston is at risk for the impacts of climate change. The Houston Climate Movement advocates for a community-wide climate action and adaptation plan.

In response to Turner’s op-ed, we penned this letter to him:

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The following is from a story at the Texas Emergy Report (www.texasenergyreport.com)  For all the energy news in Texas, consider subscribing.

Like the Sierra Club. Public Citizen is pleased about this announcement and has long advocated that these old highly polluting plants be retired completely.  See the story below.

Big Brown is shutting down.

The two-unit coal-fired electricity generation plant in Freestone County between Palestine and Corsicana began phasing out operations on Monday.

It’s the third of three Texas coal-power plants being shut down by Luminant, dropping more than 4,600 MW of power capacity in Texas, and the effects are being felt around the nation.

Because of related pollution, the Sierra Club estimates that the closing of Big Brown alone will save “an estimated 163 lives every year, prevent nearly 6,000 asthma attacks, prevent tens of thousands of lost work and school days, and save $1.6 billion in in annual public health costs, according to analysis conducted with EPA-approved air modeling.”

The other two plants, the Monticello about 130 miles east of Dallas and the Sandow Steam Electric Station in Milam County east of Round Rock, are already phasing out and ceased operations last month.

Coal-fired plants can no longer compete with cheap natural gas, and as Vistra Energy subsidiary Luminant put it when announcing the shutdowns, “sustained low wholesale power prices, an oversupplied renewable generation market” and other factors joined in making poor investments of the plants.

Mine operations are also affected.

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