Archives

October 27, 2017

Weekly Roundup of Other Biobased News

Bloomberg Politics, “Trump Tells EPA to Boost Biofuels after Iowa Uproar” International Civil Aviation Organization (ICAO), “ICAO Conference on Sustainable Alternative Fuels Agrees on New 2050 Vision to Guide Future Development and Deployment” Portland Press Herald, “LePage Invites Bio-Based Businesses to Call Maine Home” Digital Journal, “Florida Aims to Become Regional Alternative Jet Fuels Hub” Triple Pundit, “Over Half a Trillion Soybeans...
October 20, 2017

Weekly Roundup of Other Biobased News

University of California San Diego, “A Flip Flop Revolution” Gevo Inc., “Department of Energy’s National Labs to Collaborate with Gevo to Optimize Ethanol-to-Olefins (ETO) Catalyst Performance:  Project to Explore Using Other Potential Feedstocks Including Low-Value Process Side Streams from Industrial Plants” Woods Hole Oceanographic Institution, “Fueling the Future”
October 20, 2017

American Process and Byogy Renewables Launch Phase 1 Of DOE-Funded Biofuels And Bioproducts Project

By Lauren M. Graham, Ph.D. On October 9, 2017, American Process Inc. and Byogy Renewables, Inc. announced the launch of Phase 1 of its “Advanced Biofuels and Bioproducts with AVAP (ABBA)” project following the completion of negotiations with the U.S. Department of Energy (DOE).  American Process received $3.7 million in funding for ABBA from DOE under the “Project Definition for Pilot- and Demonstration-Scale Manufacturing of Biofuels, Bioproducts, and...
October 20, 2017

EPA Approves Flint Hills Resources’ Plant For Cellulosic Ethanol Production

By Lauren M. Graham, Ph.D. On October 12, 2017, Edeniq, Inc., a leading cellulosic and biorefining technology company, announced that Flint Hills Resources, a member of the Biobased and Renewable Products Advocacy Group (BRAG®), received approval from EPA for cellulosic ethanol production at its Iowa Falls ethanol plant.  The 100 million gallons per year plant will use Edeniq’s Pathway technology to produce the cellulosic ethanol and will be eligible to qualify its cellulosic...
October 13, 2017

Weekly Roundup of Other Biobased News

Waterloo Cedar Falls Courier, “Grassley, Ernst to Meet with Pruitt on Ethanol” Chemistry World, “First for Cells as They're Made to Manufacture Fluorinated Bioplastics” The Scientist, “Meet the Transgenic Silkworms That Are Spinning out Spider Silk” National Biodiesel Board, “Biofuels Advocates Together Urge President to Prevent EPA's Actions That Harm American Workers” Aemetis, “Aemetis Commercializes Advanced Enzymatic Biodiesel...
October 13, 2017

Neste Issues Report On Changes In Energy, Transport, Chemical Markets

By Lauren M. Graham, Ph.D. On October 5, 2017, Neste, a member of the Biobased and Renewable Products Advocacy Group (BRAG®), announced the publication of its business environment outlook titled “Taking Action on Climate Change.”  The report provides an overview of key changes taking place in the energy, transport, and chemicals markets and of select drivers of such change.  The report highlights the role biofuels can play in reducing emissions from the road,...
October 13, 2017

PNNL, WSU Partnership Produce Byproducts From Biofuel

By Lauren M. Graham, Ph.D. A collaboration between researchers at the Department of Energy's (DOE) Pacific Northwest National Laboratory (PNNL) and Washington State University (WSU) has led to the development of a method for converting hydrothermal liquefaction wastewater into a usable and valuable commodity.  The method utilizes the byproduct wastewater stream from the continuous thermo-chemical process that PNNL researchers developed to produce biocrude from algae.  The...
October 13, 2017

USDA Announces $21 Million In Funding For Biobased Products

By Lauren M. Graham, Ph.D. On September 22, 2017, the U.S. Department of Agriculture’s (USDA) National Institute of Food and Agriculture (NIFA) awarded six grants totaling nearly $21.1 million to support the development of new jet fuel, biobased products, and biomaterials from renewable sources.  The funding is provided through NIFA’s Agriculture and Food Research Initiative (AFRI) Sustainable Bioenergy and Bioproducts (SBEBP) Challenge Area.  Grant recipients include:...
October 6, 2017

Weekly Roundup of Other Biobased News

Senator Rounds, “Rounds Asks EPA Administrator for Continued Support of Renewable Fuel Standard” DOE Joint Genome Institute, “2018 DOE JGI Community Science Program Allocations Announced” Brookhaven National Laboratory, “With Extra Sugar, Leaves Get Fat Too -- Scientists Tip Balance of Plant Metabolism to Increase Oil Content in Leaves with Aim of Making Biofuels and Related Useful Chemicals” Cornell Chronicle, “Bioreactors on a Chip Renew Promises for...
October 6, 2017

DOE Awards Up To $3.5 Million In Funding For Advancements In Algal Biomass Yield Project

By Lauren M. Graham, Ph.D. On September 26, 2017, the U.S. Department of Energy (DOE) announced the selection of an additional project for the Bioenergy Technologies Office’s (BETO) Advanced Algal Systems Program funding opportunity announcement (FOA).  DOE is awarding up to $3.5 million to the National Renewable Energy Laboratory (NREL) to more than double the productivity of biofuel precursors from algae.  Researchers aim to improve productivity by increasing algal...
September 29, 2017

ITC Issues Notice On Final Phase Of Biodiesel Antidumping, Countervailing Investigation

By Kathleen M. Roberts On September 20, 2017, the U.S. International Trade Commission (ITC) published in the Federal Register a notice of the scheduling of the final phase of antidumping (AD) and countervailing duty (CVD) investigations of biodiesel imports from Argentina and Indonesia.  ITC will hold a hearing in connection with the final phase of the investigations at 9:30 a.m. (EST) on November 9, 2017, in Washington, D.C.  Requests to appear at the hearing are due by November...
September 22, 2017

Weekly Roundup of Other Biobased News

AgWeek, “EPA: Thumbs-Up to 'Energy Beet' Idea” Rueters, “China Set for Ethanol Binge as Beijing Pumps Up Renewable Fuel Drive” Bio-On, “Glasses Go ‘Bio’. Partnership Between Bio-On and Kering Eyewear” University of Illinois, “Airline Industry Could Fly Thousands of Miles on Biofuel from a New Promising Feedstock” University of Delaware, “A Sweeter Way to Make Green Products”
September 22, 2017

Neste Announces Renewable Jet Fuel To Be Used At Genève Aéroport

By Lauren M. Graham, Ph.D. On September 13, 2017, Neste, a member of the Biobased and Renewable Products Advocacy Group (BRAG®), announced it is collaborating with Genève Aéroport to make flying more sustainable.  Neste will be providing renewable jet fuel for aircraft operations from Genève Aéroport.  The goal is for one percent of the jet fuel consumed annually at Genève Aéroport to be composed of renewable jet fuel by late 2018. ...
September 22, 2017

DOE Studies Impact Of Drought On Biomass Products

By Kathleen M. Roberts Researchers from the U.S. Department of Energy (DOE) have linked changes in rainfall and other environmental stressors during crop growth to potential deleterious effects on biofuel production.  The study demonstrates that the effect of weather conditions on crop yields can significantly impact the downstream processing of those crops for biofuel production.  Researchers compared the production of biofuel from switchgrass harvested after a major drought to...
September 15, 2017

Weekly Roundup of Other Biobased News

DOE, “Energy Department Announces Second Round of Midwest Entrepreneurship Program to Drive Technology Innovation” Reuters, “EU to reopen biodiesel market to Argentine exporters” Renewable Fuels Association, “American Biofuels Producers Demand U.S. Government Respond to Brazilian Tariff” BBC News, “How Sicilian Oranges Are Being Made Into Clothes” University of Nebraska, “Huskers Bring the Heat to Improve Biodegradable Plastics”
September 15, 2017

DOE Announces $8.8 Million In Funding For Algae Technology Innovation Projects

By Kathleen M. Roberts On September 8, 2017, the U.S. Department of Energy (DOE) selected an additional four Productivity Enhanced Algae and Toolkits (PEAK) projects to receive up to $8.8 million.  The projects aim to develop high-impact tools and techniques that will increase the productivity of algae organisms to reduce the costs of producing algal biofuels and bioproducts.  In total, DOE has awarded over $16 million in funding to the initiative.    The project winners...
September 8, 2017

Weekly Roundup of Other Biobased News

Platts, “New EU Biodiesel Greenhouse Gas Calculations Come Into Force” Biotechnology For Biofuels, “The Impact of Considering Land Intensification and Updated Data on Biofuels Land Use Change and Emissions Estimates” University of California, Irvine, “Markus Ribbe and Yilin Hu: Brewing Biofuel from Bacteria” United Kingdom Government, “Planes Fuelled by Waste Could Take Off from British Airports”
September 8, 2017

HelioBioSys Inc. Patents Algae-like Organisms For Biofuels

By Lauren M. Graham, Ph.D. Sandia National Laboratories announced that it is helping HelioBioSys Inc. learn whether farming cyanobacteria on a large scale would be successful in producing sugar for biofuels.  HelioBioSys Inc. patented a group of three non-genetically modified marine cyanobacteria for the production of sugars, which can then be converted into a variety of fuels and chemicals.  Similar to algae, cyanobacteria grow in water and avoid competition with food crops for...
September 8, 2017

EU Commission Extends Red Tractor Biofuel Crop Assurance Scheme

By Kathleen M. Roberts On August 25, 2017, the National Farmers’ Union (NFU) announced that the European Commission confirmed the extension of the Red Tractor voluntary scheme for biofuels for an initial three months.  Red Tractor is a certification body used to prove that crops meet European Union (EU) sustainability requirements.  To receive public support or count towards mandatory national renewable energy targets, biofuels used in the EU must comply with the...
September 8, 2017

EPA Waives RFS Requirements For States Affected By Hurricane Harvey

By Lauren M. Graham, Ph.D. On August 31, 2017, the U.S. Environmental Protection Agency (EPA) announced that requirements for reformulated gasoline and low volatility gasoline would be waived through September 15, 2017, for Alabama, Florida, Georgia, Kentucky, Maryland, Mississippi, North Carolina, South Carolina, Tennessee, Virginia, Texas, Louisiana, and the District of Columbia.  EPA exercised its emergency fuel waiver authority to help ensure an adequate supply of fuel...
September 1, 2017

Weekly Roundup of Other Biobased News

DOE, “Bioprose: Building the Bioeconomy through Technology & Communication” Business Wire, “Biofuel and Biogas Innovators Unite for Stronger Cellulosic Targets” Bangor University, “Landfill Sites: Not Just a Load of Rubbish” Penn State, “Potato Waste Processing May Be the Road to Enhanced Food Waste Conversion”
September 1, 2017

Neste Announces Renewable Diesel Fueling Helsinki Airport

By Lauren M. Graham, Ph.D. On August 24, 2017, Neste, a member of BRAG, announced that its Neste MY Renewable Diesel™ is part of Finavia's climate program.  Initially, the renewable fuel will be used in 20 Helsinki Airport buses, with the goal of expanding its use in the future.  According to Mikko Viinikainen, Vice President of Sustainability & Environment at Finavia, Neste MY Renewable Diesel is an excellent addition to the Finavia’s energy portfolio, which...
September 1, 2017

Flint Hills Resources Installs Co-Product Technologies

By Lauren M. Graham, Ph.D. On August 14, 2017, Flint Hills Resources, a member of the Biobased and Renewable Products Advocacy Group (BRAG®), announced that construction is underway to install a new, bolt-on technology, known as Maximized Stillage Co-Products™ (MSC), at its ethanol plant in Fairmont, Nebraska.  The MSC technology will be used to convert a portion of the distiller grains, a coproduct of ethanol manufacturing, to a high protein animal and fish feed ingredient,...
August 25, 2017

Weekly Roundup of Other Biobased News

Illinois Sustainable Technology Center, “Project Moves Forward to Turn State Roadways into a Renewable Energy Source” North Dakota State University, “Economic Impact of North Dakota's Ethanol Industry in Fiscal Year 2015” The University of British Columbia, “New Biofuel Technology Cuts Production Time Significantly”
August 25, 2017

USDA Awards Funding For Study Of Biofuels Impact On Climate

By Lauren M. Graham, Ph.D. The U.S. Department of Agriculture’s (USDA) National Institute of Food and Agriculture (NIFA) awarded researchers from Clemson University a $147,744, two-year grant to evaluate the effectiveness of producing biofuels to mitigate climate change.  The project will analyze how switchgrass fields and loblolly pine forests affect local temperatures through the exchange of water, energy, radiation, and carbon with the atmosphere; and quantify below-...
August 25, 2017

New Iowa State Study Shows Benefits Of RFS Program

By Lauren M. Graham, Ph.D. In a paper forthcoming in the American Journal of Agricultural Economics, Iowa State researchers demonstrate that their tractable multi-market equilibrium model designed to evaluate alternative biofuel policies confirms that the current RFS program benefits the agriculture sector, and leads to overall welfare gains for the U.S.  The model considers biodiesel and ethanol markets and is simulated to analyze alternative scenarios, including the repeal of all RFS...
August 25, 2017

Bill To Repeal Bioenergy Subsidies Introduced In The House Of Representatives

By Kathleen M. Roberts On July 26, 2017, the Farewell to Unnecessary Energy Lifelines Reform Act of 2017 or FUEL Reform Act (H.R. 3419) was introduced in the House of Representatives by Representative Andy Biggs (R-AZ).  The bill would eliminate the following energy subsidies in Title IX of the Farm Security and Rural Investment Act of 2002: Biobased Markets Program; Biorefinery, Renewable Chemical, and Biobased Product Manufacturing Assistance Program; Repowering Assistance Program;...
August 25, 2017

Appellate Court Rules EPA RFS Exemption Criteria Too Strict

By Lauren M. Graham, Ph.D. On August 15, 2017, the U.S. Court of Appeals for the Tenth Circuit ruled two to one that the U.S. Environmental Protection Agency (EPA) exceeded its statutory authority under the Clean Air Act (CAA) when it denied Sinclair Oil Corporation’s request for a hardship exemption from the Renewable Fuel Standard (RFS) program.  The statute requires that EPA grant exemptions on a case-by-case basis to small refiners that would suffer a “disproportionate...
August 18, 2017

Weekly Roundup of Other Biobased News

Aemetis, “Aemetis Producing Cellulosic Ethanol from Orchard Waste at Integrated Demonstration Unit”  Michigan State University, “A New Chloroplast Role for Making Biofuels”  Post Register, “Examining Alfalfa’s Potential as a Fuel” 
August 18, 2017

Biofuel Industry Testifies At EPA Hearing On RFS Program

By Lauren M. Graham, Ph.D. On August 1, 2017, the U.S. Environmental Protection Agency (EPA) held a public hearing to hear from all segments of the fuel industry on the proposed rule to set the 2018 renewable volume obligations (RVO) under the Renewable Fuel Standard (RFS) program.  Among the nearly 150 individuals and organizations scheduled to testify at the hearing were numerous biofuel industry stakeholders who praised EPA for issuing the proposed rule on time and for maintaining...
August 11, 2017

Weekly Roundup of Other Biobased News

Bloomberg, “Trump’s EPA to Reject Icahn-Backed Tweak to Biofuel Program” USDA, “Researchers Tap Papaya-Loving Algae to Make ‘Home-Grown’ Biodiesel for Hawaii” Oak Ridge National Laboratory, “Materials --Cooking Up Biofuel” Treasure Coast Research Park, “The Sweet Smell of Success…and Beets!"
August 11, 2017

Minnesota Doubles Summer Biofuel Mandate For Diesel

By Lauren M. Graham, Ph.D. On August 3, 2017, Minnesota Governor Mark Dayton announced that the state will implement a new biodiesel standard in May 2018 that will increase the biodiesel blend mandate from 10 percent (B10) to 20 percent (B20) between April and September each year.  Currently under the state’s biodiesel program, diesel fuel sold in Minnesota must contain at least 10 percent biodiesel during the summer months, with the blend lowering to 5 percent from October to...
August 4, 2017

Weekly Roundup of Other Biobased News

The Hill, “Court Rejects 2015 EPA Biofuels Waivers” Govenors’ Biofuels Coalition, “Action on E15 Bill not Expected Before August Recess” Department of Energy, “EERE Success Story -- New Membrane Technology Will Improve Efficiency of Biofuel Production” PWashington State University, “Algae Cultivation Technique Could Advance Biofuels”
August 4, 2017

NBB Announces New CARB Certified Biodiesel Additive

By Kathleen M. Roberts On July 25, 2017, the National Biodiesel Board (NBB) announced that the California Air Resource Board (CARB) certified a biodiesel additive that will make California B20 blends the cleanest diesel fuel with the lowest emissions profile available in the U.S.  The additive known as Branded VESTA™1000 reduces every measurable regulated emission, including nitrogen oxides (NOx), when blended with CARB diesel fuel, California’s unique clean-burning...
August 4, 2017

USDA Announces $15.1 Million In Grants For Bioenergy and Bioproducts

By Lauren M. Graham, Ph.D. On July 20, 2017, the U.S. Department of Agriculture's (USDA) National Institute of Food and Agriculture (NIFA) awarded 34 grants totaling $15.1 million for research on renewable energy, biobased products, and agroecosystems.  The grants, which are funded through the agency’s Agriculture and Food Research Initiative (AFRI), are expected to help develop the next generation of renewable energy, bioproducts, and biomaterials; protect the ecosystems...
August 4, 2017

EPA Publishes Analysis Of GHG Emissions From Sugar Beets

By Lauren M. Graham, Ph.D. On July 26, 2017, the U.S. Environmental Protection Agency (EPA) published its analysis of the upstream greenhouse gas (GHG) emissions attributable to the production of sugar beets for use as a biofuel feedstock.  EPA considered a scenario in which non-cellulosic beet sugar is extracted for conversion to biofuel and the remaining beet pulp co-product is used as an animal feed.  Based on the findings, EPA anticipates that biofuels produced from sugar...
July 28, 2017

Weekly Roundup of Other Biobased News

Senator John Hoeven, “Hoeven Announces Nearly $150,000 to NDSU for Research on Biobased Fire Retardants”  ChemCatBio, “ChemCatBio Directed Funding Assistance” Northwestern University, “Tiny Particles Increase in Air with Ethanol-To-Gasoline Switch”  Plastics News, “Start-Up Turns Food Waste into PHA Plastics”
July 28, 2017

SkyNRG Announces Recommendations For Funding Sustainable Aviation Fuels

By Lauren M. Graham, Ph.D. On July 19, 2017, SkyNRG, along with Carbon War Room (CWR) and the Port of Seattle, announced their recommendations for long-term funding mechanisms to supply all airlines at Seattle-Tacoma International Airport (Sea-Tac) with sustainable aviation biofuels.  Their report, titled “Innovative Funding For Sustainable Aviation Fuel At U.S. Airports:  Explored At Seattle-Tacoma International,” reviews a broad array of airport funding sources, the...
July 28, 2017

Royal Academy Of Engineers Publishes Report On The Sustainability Of Biofuels

By Lauren M. Graham, Ph.D. On July 14, 2017, the Royal Academy of Engineering (Academy) published a report on the sustainability pros and cons of biofuels, which was commissioned by the Department of Transport and the Department for Business, Energy and Industrial Strategy.  The report aims to provide advice on the future strategy for the development of biofuels in the United Kingdom (UK).  In its statement announcing the report, the Academy stated that biofuels, particularly...
July 28, 2017

EPA Publishes Proposed 2018 RFS Requirements

By Kathleen M. Roberts On July 18, 2017, the U.S. Environmental Protection Agency (EPA) published in the Federal Register its proposed rule on the Renewable Fuel Standard (RFS) Program:  Standards for 2018 and Biomass-Based Diesel Volume for 2019.  The rulemaking proposes the annual percentage standards for cellulosic biofuel, advanced biofuel, and total renewable fuel for motor vehicle gasoline and diesel produced or imported in 2018, as well as biomass-based diesel in 2019, as...
July 21, 2017

Weekly Roundup of Other Biobased News

Celtic Renewables, “World's First Car To Be Fuelled By Whisky Residue Biofuel Takes Its Inaugural Journey” Union for the Promotion of Oil and Protein Plants (UFOP), “Conducting Food/Fuel Debate Based On Facts” University of Dayton, “From Fish Tank To Gas Tank” University of British Columbia, “New Biofuel Technology Cuts Production Time Significantly”
July 21, 2017

EIA Issues Short-Term Energy Outlook Report

By Lauren M. Graham, Ph.D. On July 11, 2017, the Energy Information Administration (EIA) issued its June Short-Term Energy Outlook (STEO).  EIA considered EPA’s recent rulemakings on the 2017 RFS volume requirements and proposed 2018 RFS volume requirements when developing its STEO for 2017 and 2018.    Biodiesel production averaged 101,000 barrels per day (b/d) in 2016, and, according to EIA, is expected to increase to an average of 105,000 b/d in 2017 and to 109,000...
July 21, 2017

DOE Announces Up To $8 Million In Funding For Algae Biofuels Projects

By Lauren M. Graham, Ph.D. On July 11, 2017, DOE announced the selection of three projects focused on reducing the costs of producing algal biofuels and bioproducts that will receive up to $8 million in funding.    The projects aim to generate high-impact tools and techniques for increasing the productivity of algae organisms and cultures and biology-focused breakthroughs.  The project winners include: Lumen Bioscience, which will work with the National Renewable Energy...
July 14, 2017

Weekly Roundup of Other Biobased News

Great Lakes Bioenergy Research Center, “Cellulosic Biofuels Can Benefit the Environment If Managed Correctly” Euractiv, “MEPs Ask Commission to Distinguish ‘Good And Bad’ Crop-Based Biofuels” American Oversight, “American Oversight Sues EPA to Release Communications with Carl Icahn” Arizona State University, “ASU Scientists Harness the Trial-and-Error Power of Evolution to Coax Nature into Revealing Answer to Energy Challenge”...
July 14, 2017

EPA Releases Proposed 2018 RFS Volume Requirements

By Kathleen M. Roberts On July 5, 2017, the U.S. Environmental Protection Agency (EPA) issued proposed volume requirements under the Renewable Fuel Standard (RFS) program for cellulosic biofuel, advanced biofuel, and total renewable fuel for 2018, as well as biomass-based diesel for 2019.  The proposal lowers the blending requirement for all renewable fuel with the exception of biomass-based diesel, which maintains the 2017 blending requirement.  The proposed volume requirements...
June 30, 2017

Weekly Roundup of Other Biobased News

Platts, “Recent California LCFS Case Ruling Unlikely to Affect State's Market: Sources” UPM Biofuels, “Ecofys Study on Crude Tall Oil Markets and Availability: Sufficient Supply for Advanced Biofuels, Biomaterials and Energy Usage” University of Illinois, “Corn Better Used As Food Than Biofuel, Study Finds” Chemical & Engineering News, “Green Synthesized Biofuel Meets Auto Standards”
June 30, 2017

Synthetic Genomics Inc. Announces Breakthrough In Algae Biofuel Research

By Lauren M. Graham, Ph.D. On June 19, 2017, Synthetic Genomics Inc. announced a breakthrough in its collaboration with ExxonMobil involving the modification of an algae strain that more than doubled its oil content to 40 percent without significantly inhibiting the strain’s growth.  Synthetic Genomics researchers identified a genetic switch that could be fine-tuned to regulate the conversion of carbon to oil in the algae species, Nannochloropsis gaditana, and established a...
June 16, 2017

Weekly Roundup of Other Biobased News

Senator Whitehouse, “Senators Call On Pruitt To Explain Icahn’s Role In Shaping RFS” Governor Ige, “Hawai‘i Becomes First State To Enact Law That Aligns With Paris Agreement” Biofuels International, “MEP Calls For Sweeping Changes To EU Biofuel And Bioenergy Legislation” University of Minnesota, “U Of M Helps Startup Resynergi Create Energy From Plastic Waste And Biomass"
June 9, 2017

Weekly Roundup of Other Biobased News

Bloom, “Vivobarefoot Partners with BLOOM to Make the First-Ever Moulded Shoe, Made from Algae” Airbus, “Airbus Demonstrates Regular Customer Delivery Flights with Sustainable Jet Fuel” University of California Santa Barbara, “From Guts to Glory?” Business Insider, “IIT-Kharagpur Develops Technology to Make Pollution-Free Biofuel”
June 9, 2017

BETO Announces Availability Of Project Peer Review 2017 Presentations

By Lauren M. Graham, Ph.D. On June 2, 2017, the Department of Energy’s (DOE) Bioenergy Technologies Office (BETO) announced the availability of Project Peer Review 2017 presentations.  The biennial event provides an opportunity for external stakeholders to evaluate rigorously the technical approach, progress, relevance, and overall merit of all the projects in the BETO portfolio.  The review was conducted across nine technology areas, including: Feedstock Supply and...