On October 6th, Seventh Generation and the University of Vermont welcomed the 45th US Vice President, Al Gore at Ira Allen Chapel on the university’s campus. The highly anticipated speaking engagement entitled “The Climate Crisis and the Case for Hope,” which is part of an Energy Action Seminar Series facilitated by UVM Energy Alternatives, was truly an emotional roller coaster and had Gore left the stage at the halfway mark, all in attendance would have gone home rather depressed. “We are going to win this struggle” he stated, “the question is how quickly we will win,” Gore remarked before elaborating on the deep sinkhole humanity has fallen into.
The lecture followed a path most familiar with the former vice president’s advocacy would expect. The rising atmospheric greenhouse gas (GHG) levels that we are witnessing come from a variety of sources, but as Gore pointed out “the main problem is burning of fossil fuels, when we address this, the rest will fall into place.” The first part of the lecture really focused on the crisis. The audience watched in horror footage of major weather events, many have seen before, but taken in all at once really underline the major recent changes that we have seen in our global weather patterns. Gore noted that of the “14 of the hottest years on record have been in the last 15 years,” and that the average temperature at night during this time has increased, meaning that people and the planet, really can’t get a break from the heat.
Gore went on to talk about the cost of carbon, or as he tried to drive home, the lack of cost it represents to our economy. “We need to put a cost on carbon,” he noted “put a cost on denial” he then continued in reference to those who deny climate change. This statement was met by large applause by those who filled Ira Allen Chapel, hitting home for a crowd that will likely be talking a lot about carbon pricing in the upcoming legislative session. Political instability, floods and mudslides, wildfires, drought, storm damage, dying coral, infrastructure loss, species extinction, melting glaciers, famine water security, ecosystem loss, our way of life, infectious disease, and sea level rise all represent the cost of carbon we are already paying Gore noted on a slide with an animated cash register racking up the cost, concluding “there is a financial risk to using fossil fuels”
It’s worth noting, that this notion does not make Gore an outlier anymore. Just last week the Governor of the bank of England, Mark Carney echoed the same message when he spoke on the increase of major weather events and the related financial cost at meeting of leading insurers at Lloyd’s of London. Additionally, going back to last year, the department of defense listed climate change as an agitating factor in areas already experiencing political instability.
As was said earlier, if Gore had sent everyone home after the “The Climate Crisis” part of his lecture, without the “Case for Hope” portion, everyone there would have a pretty doomy and gloomy demeanor for weeks to come. Instead, the mood took a 360 change with Gore trumpeting the triumphs of the past year that have put humanity on a course towards beating climate change. Among these he gave Burlington credit for achieving 100% renewable energy. He went on the new power generated in 2014 three quarters of it was renewable energy, and reflecting on the fact that those who still deny climate change can agree, renewables just make economic sense.
To close, Gore instructed the audience, “always remember, that political will is a renewable resource.” As Vermont and the rest of the nation watch national and local campaigns for political office start up in which politicians’ attention, or potential lack of attention, can greatly shape our climates future, let’s hope that holds true. Leaving Ira Allen Chapel, one couldn’t help but feel a sense of optimism, and optimism is definitely a renewable resource.
The full seminar “The Climate Crisis and the Case for Hope” can be heard courtesy of the Gund Institute for Ecological Economics
David Marchant and Jane Sorensen of River Berry Farm—an organic vegetable and fruit producer in Fairfax—were early adopters of biomass heating when they installed a corn and pellet furnace in one of their greenhouses in 2008. The furnace required manual lighting and was snuffed out often when strong winds blew, and did not produce reasonable heat. “I kept thinking, there has got to be a better option,” recalls David, “It was a real labor burden, and you couldn’t count on it.”
Based on their early experiences and bolstered by a commitment to long-term sustainability and reduced fossil fuel dependence, River Berry Farm opted to host a biomass heating demonstration project. This time, they opted for a higher-rated boiler rather than a furnace. Boilers produce hot water, rather than hot air, which allows more options for distributing the heat. The new system also had an automated propane ignition system.
The biomass heating demonstration was part of a UVM Extension project aimed at trialing several furnaces in agricultural heating applications with funding support provided by the High Meadows Fund. According to Chris Callahan, Ag Engineer with UVM Extension Agricultural Engineering Program who assisted with some of the design and performance assessment, “The main lessons learned from these early installations were to buy high quality fuel, seek improved automatic ignition controls, invest in a good chimney and install it well, and know the actual heat output rating of the unit.”
Modern biomass heating appliances generally include a fuel storage bin, an auger for feeding fuel to the appliance, the appliance itself (boiler or furnace) with an ignition system, a combustion chamber, a heat exchanger, and a heat distribution system. They also incorporate some means of controlling combustion, fuel feed rate, and air flow and often include emissions control measures and automated ash removal.
The selected boiler was a Central Boiler Maxim 250 with a 250,000 BTU/hr input rating, efficiency of 87.8%, and EPA Phase II Hydronic Heater qualification. “The boiler makes hot water which we can use in multiple greenhouses by plumbing it to them in insulated PEX piping. Once in the greenhouse, we convert to hot air with a hot water fan coil, put it in the ground for root-zone heating or on the benches in our mat-heating system for starts,” says Marchant. “I like it. I keep trying to find something wrong with it, but I can’t. The payback period is a bit longer due to higher initial costs, but you have to expect that.”
The basic system cost was approximately $13,000 for the boiler, bin, pad, and plumbing to a hot water fan coil. The other heat distribution systems included in-ground PEX, heat exchange, and plumbing for a bench heat system and added approximately another $5,000. The system is more automated and reliable than the earlier furnace was, but the higher initial costs and the fact that the system is only used 3 months out of the year do prolong the payback period to about 12 years when compared with a propane furnace. If the system was used for 6 (space heating) or even 12 months (wash water, pasteurization) of the year the payback would be halved or quartered, respectively.
“In addition to the financial payback, the carbon emissions avoidance is also of interest to many people,” says Callahan, “In River Berry Farm’s case, the Maxim is helping them avoid 5,910 pounds of net CO2 emissions per year which is about equivalent to 5,000 miles car travel or the CO2 sequestered by half an acre of pine forest.”
Learn more about UVM Extension’s Agricultural Engineering Program at.
This story was originally released in a series of energy case studies showcasing farms, businesses, vendors, installers, and technical assistance providers who have made a difference with energy efficiency savings and renewable energy production—all of which are components for helping Vermont reach the renewable energy and environmental impact goals of the Farm to Plate Strategic Plan. Learn more at www.vtfarmtoplate.com.
14 Sep 2015
The Vermont Bioenergy Initiative, a program of the Vermont Sustainable Jobs Fund, aims to foster the sustainable bioenergy through a local production for local use model, proven to work for Vermont. Since 2003 the program has allowed Vermont farms to ease their resilience on inconsistently priced, foreign fossil fuels and other agricultural inputs. This is accomplished by focusing on biodiesel production and distribution for heating and transportation, oil crops for on-farm biodiesel and feed, grass energy for heating, and algae production for biofuels and waste management.
Vermont Bioenergy Initiative grantees have shown just how much the addition of biomass feedstock can contribute to sustainable agriculture. As one of these grantees, John Williamson of Stateline Farm would put it, “100 years ago everyone produced their own fuel; we are just doing that now in a different way.” This is really a novel way to look of what he is doing on his North Bennington farm. John was featured in a recent story in Daily Yonder which outlined his work and how he has begun helping his Vermont neighbors find their path to this form of sustainable, renewable energy.
For more about John Williamson’s on-farm biodiesel production, watch this video of John in self-designed Biobarn. He and Chris Callahan of University of Vermont Extension show us how they can grow oil crops, make biodiesel, feed animals, and save money!
Also, explore the initiative’s extensive and accessible set of bioenergy resources for replication in rural communities across the United States and beyond.
07 Sep 2015
Beginning Monday the 14th of September, and reoccurring each week thereafter, an Energy Action Seminar Series aims to explore energy transitions in Vermont, the United States and the rest of the World. Sponsored by the University of Vermont’s Clean Energy Fund, Community Development & Applied Economic program, and the Environmental Program this series will be held from 4:00-05:20 pm in Lafayette Hall Room 108* at the University of Vermont. This series featuring world-class speakers on policy options, political controversy, costs and benefits, activism, and jobs is free and open to the public.
While there is already an extensive line-up of speakers, the most high profile speaker to stand out on the list is former Vice President Al Gore. Gore will draw on his years of climate advocacy for his discourse entitled “The Climate Crisis and The Case for Hope.” When delivering this discourse, Gore aims to address three big questions on the climate crisis: Do we need to change? Can we? And will we? The resounding answer to first two questions of course is a loud YES, but third one most likely cannot be answered in certain terms, and hopefully this where Gore can leave us all with “a case for hope.” NOTE: There is a slight deviation of schedule; this seminar will be on Tuesday, October 6th at 10:15 AM in Ira Allen Chapel.
In addition to Al Gore, numerous other leaders from near and afar will attend and speak during the duration of this series. One such visitor on September 21st, Professor Miranda Schreurs of Free University of Berlin and Director of their Environmental Policy Cente,r stands to bring a plethora of insight from her experience in Germany’s renewable energy revolution. In her time with the Environmental Policy Research Center, Professor Schreurs was on the frontlines of the interdisciplinary collaboration of university researchers necessary for Germany to meet it’s ambitious goal of running almost their entire economy on renewable energy by the year 2050. Germany’s goal is very similar to Vermont’s 2050 goal, and the potential for collaboration and to learn from one another through this event are boundless.
Another great guest speaker will come from Washington, all the way across the US,. Yoram Bauman, more commonly known “Stand-Up Economist,” uses a unique combination of witty comedic talent along with his PhD in Environmental Economics to help an audience explore climate change in an economic context. Yoram’s seminar exploring carbon taxing on October 10th will fall just a couple of days after he serves as the keynote speaker and sits on a carbon pricing panel at the 15th Annual Renewable Energy Conference & Expo in Burlignton, VT. His fresh and recent insight into Vermont’s existing carbon pricing discussion mixed with his existing expertise, and sense of humor will make this event worth not missing.
Additionally, many Vermont energy leaders will be speaking at theses weekly seminars including Representative Tony Klein Chair of House Energy and Natural Resources, Asa Hopkins Director of Planning for the Department of Public Service, Gabrielle Stebbins Director of Renewable Energy Vermont, and Mary Powell of Green Mountain Power. Each of these speakers, as well as the entities they represent, have proven themselves leaders in the Vermont energy landscape through their involvement in recent energy legislation, advocacy, and innovation.
|9/14||Energy Transitions||Jennie Stephens, Blittersdorf Professor of Sustainability Science & Policy, University of Vermont|
|9/21||Going Green: The German Energy Transition||Miranda Schreurs, Professor, Free University of Berlin Director, Environmental Policy Center|
|9/28||The Vermont Energy Transition||Tony Klein, Chair: House Energy and Natural Resources, Asa Hopkins, Director of Planning, Department of Public Service. Gabrielle Stebbins, Director, Renewable Energy Vermont|
|10/5||Student Alumni: Making a Difference in the World||Panel: Recent UVM grads in energy-related fields|
|10/6*||The Climate Crisis and The Case for Hope||Al Gore, former Vice-President, United States|
|10/12||Carbon Taxes: Why We Need Them||Yoram Bauman, The world’s only “stand-up” Economist|
|10/19||Challenging the Car: Creating places where biking is safe & easy||Steve Clark, League of American Bicyclists, Community Organizer|
|10/26||Vermont’s Energy Company of the Future: A Customer Driven Energy Transformation||Mary Powell, President & CEO, Green Mountain Power|
|11/2||“The War on Coal:” Big Fossils’ Response to Divestment||Jen Schneider, Political Science Dept. Boise State University|
|11/9||The Transportation Transition: Complete Streets||Roger Millar, Director, SmartGrowth America|
|11/16||Energy Transitions in the Developing world: South Africa Settlements||Steve McCauley, Worcester Polytechnic Institute|
|11/30||Design Matters: Building Green||Rolf Keilman, Partner, Truex-Cullins, Vermont|
* Al Gore presentation is in the Ira Allen Chapel, special time, 10:15 a.m. Oct. 6
For more information contact
Fred Hall [email protected]
Roison Low [email protected]
Richard Watts [email protected]
The Vermont Bioenergy Initiative connects diversified agriculture and local renewable energy production for on-farm and community use by supporting research, technical assistance, and infrastructure development in emerging areas of bioenergy including biodiesel production and distribution for heating and transportation, oil crops for on-farm biodiesel and feed, grass for heating, and algae production for biofuels and wastewater management. Explore the initiative’s extensive and accessible set of bioenergy resources for replication in rural communities across the United States and beyond.
A series of informative educational showcase a range of biofuel possibilities; from research and crop farming to feedstocks and fuel. The videos were developed by the Vermont Sustainable Jobs Fund, UVM Extension researchers, KSE Partners, and the Vermont Bioenergy Initiative grantees.
Two calculators, developed by UVM Extension, help connect potential costs and profits associated with oilseed production:
- Grass Biomass Production and Harvest Cost Estimator
- Vermont Oilseed Crop Production Cost and Profit Calculator
- Biomass to Biofuels, University of Vermont: This semester-long course covers liquid and solid biofuels, biogas and bio-electricity, and environmental, social and economic issue related to biofuels. The course includes guest lecturers and field days. Available for variable credits.
- Biomass to Biofuels, Vermont Technical College: The development of this course and associated materials led to an online repository of resources for the classroom covering biomass to biofuels.
- Digester Operations Master Certificate, Vermont Technical College: a twelve week program designed for participants to work directly with operations staff of Vermont Tech’s anaerobic digester and come away with understanding of the mechanics and operations of a digester system, as well as other areas such as permitting, regulatory compliance and record keeping.
- Alternative Fuel Vehicles: Biodiesel, part of the Green Trainings series at Vermont Technical College: This 2-day course covers engine systems, biodiesel blends and biodiesel production, including a demonstration of fuel-making equipment.
- Biofuels Course at Yestermorrow Design/Build School, part of the Green Trainings series at Vermont Technical College: This weekend workshop enables students to begin replacing fossil fuels with biofuels, such as adapting engines to run on straight vegetable oil. 1 credit.
Bioenergy: Biomass to Biofuels; is an innovative new textbook that provides insight into the potential and current advances and benefits of biofuel. Contributions include an extensive list of well-respected university extension programs, such as The University of Vermont Research Extension, as well as numerous national organizations including the US Department of Energy’s National Renewable Energy Laboratories.
A variety of reports are available which cover a range of topics including seed preparation and storage:
- Institute for Energy and the Environment at Vermont Law School.Legal & Regulatory Review of On-farm Biodiesel Production. 2015.
- Chris Callahan and Netaka White,Vermont On-Farm Oilseed Enterprises: Production Capacity and Break-even Economics. July 2013.
- Nell Campbell, Local Production for Local Use to Supply a Portion of Vermont’s Energy Needs.May 2009.
- Emily J. Stebbins. Technical and Economic Feasibility of Biodiesel Production in Vermont: Evidence From a Farm-Scale Study and a Commercial-Scale Simulation Analysis. May 2009.
- Christopher W. Callahan,A Feasibility Analysis of a Mobile Unit for Processing Oilseed Crops and Producing Biodiesel in Vermont. December 2008.
- Emily Stebbins, The Market Potential of Farm-Scale Oilseed Crop Products in Vermont. February 2008. (See also the Executive Summary)
- John Williamson & Tanner Williamson – State Line Biofuels, LLP, Chris Callahan – Callahan Engineering, PLLC, Feasibility Analysis:_Solar Seed Dryer and Storage Bin at State Line Farm, Bennington, VT. October 2008
- Christopher W. Callahan, A Feasibility Study of a Mobile Unit for Processing Oilseed Crops and Producing Biodiesel in Vermont. December 2008
- Kenneth Mulder, Ph.D., Galen Wilkerson, Emily J. Stebbins.Homegrown Fuel: Economic Feasibility of Commercial-Scale Biodiesel Production in Vermont. September 2007.
- The Vermont Biodiesel Project: Building Demand in the Biofuels Sector – Final Report. October 2006. (See also theExecutive Summary)
- Vermont Department of Buildings and General Services, Vermont Biodiesel Pilot Project: Emissions Testing of Biodiesel Blends With #6 Fuel Oil At the Waterbury State Office Complex – Final Report. September 2006.
- Laboratory and Field Testing of Biodiesel in Residential Space Heating Equipment – Final Report. August 2006.
- Vermont Biodiesel Supply Chain Survey – Final Report. April 2006.
- Wilson Engineering,Grass Energy in Vermont and the Northeast, May 2014.
Connect directly with the Vermont Bioenergy Initiative’s technical assistance providers:
Oilseeds for Biofuel
- Heather Darby, Agronomic and Soils Specialist
- University of Vermont Extension, Northwest Crops and Soils Team
- (802) 524-6501
- [email protected]
- Chris Callahan, PE, Agricultural Engineer
- University of Vermont Extension
- (802) 773-3349
- [email protected]
Grass for Heating Fuel
- Sidney Bosworth, Extension Professor
- University of Vermont College of Agriculture and Life Sciences
- (802) 656-0478
- [email protected]
Algae for Biodiesel
- Anju Dahiya, Instructor and Principal
- University of Vermont and GSR Solutions
- (802) 310-1936
- [email protected]
13 Jul 2015
Making biofuel, it sounds like a complicated process taking place in a laboratory somewhere, but in reality it’s quite simple and happening in small, rural Vermont farms. Vermont farmers like John Williamson of State Line Farm and others are electing to create their own fuel and meal. These farmers are enjoying the benefits of the distance to source resiliency and cost reliability that comes with the local production for local use biofuel model they have adopted.
As John Williamson, a Vermont Bioenergy grant recipient says, “100 years ago everyone produced their own fuel; we are just doing that now in a different way.” This is a novel way to look at what he is doing on his North Bennington farm. Vermont farmers in the past would plan to allocate their acreage to feed their livestock, some of which aided in energy-intensive farm activities like plowing, planting, and the eventual harvesting of their field. With the local production for local use model, John is now thinking about how to feed his tractor so he can do the same activities. So what is the feed of choice for John’s John Deer tractor? Sunflowers!
John loads dry and clean sunflower seeds into hoppers on a TabyPressen Oilpress, where screw augers push the seed through a narrow dye. Extracted oil oozes from the side of the barrel and is collected in settling tanks while pelletized meal is pushed through the dye at the front and is stored in one-ton agricultural sacks. The first of the two byproducts, the seed meal, can fuel pellet stoves, serve as fertilizer for crops, or find its way to local Vermont farms to supplement animal nutrition as livestock feed. The second byproduct, the fuel, could at this point be used as culinary oil for cooking, but instead will experience further refinement and become biofuel.
The processing of the oil takes place in Johns self-designed Biobarn. In the below video, John Williamson and Chris Callahan of University of Vermont Extension show us how they can grow oil crops, make biodiesel, feed animals, and save money!
In order to meet the goals set by Vermont’s comprehensive energy plan for Vermont to produce 90 percent of the state’s energy needs from renewables by 2050 and reduce Vermont’s greenhouse gas emissions by 50 percent from a 1990 baseline, Vermont farmers will have an important role to play. As Vermont experiences growth in food-related businesses and jobs, decisions about energy become more important prompting statewide energy and agriculture collaborations. In the following episodes of Across the Fence, UVM Extension agricultural engineer and Vermont Bioenergy Initiative biofuels consultant, Chris Callahan, shares two stories about Vermont farmers who are rethinking their on-farm energy. In both examples UVM extension is able to work with the farmers to help make cleaner, renewable on-farm energy sources a practical solution that saves money and results in greenhouse gas reductions.
Learn more in a series of on-farm energy case studies produced by Vermont’s Farm to Plate Initiative.
Jim Malloy, of Plainfield, Vermont, is being recognized for his contributions to reducing the use of petroleum fuel in the transportation sector. His business, TH Malloy and Sons in Newport, Rhode Island, is being recognized with the New England Northern Star Award as one of the top fleets for reducing their emissions through the use of biodiesel made from recycled restaurant oil.
The 75-year-old family business is a distributor for Newport Biodiesel, also of RI, who produces biodiesel from recycled restaurant oil. Both companies are being recognized with the award.
Each recipient of the award demonstrated a deep commitment to the goals of the Clean Cities program through use of alternative fuels, alternative fuel vehicle purchasing, and petroleum reduction practices. The designation as a Northern Star required that the fleets be a stakeholder in their local Clean Cities Coalitions and that they meet a list of criteria showing their commitment to Clean Cities’ initiatives.
Malloy introduced biodiesel fuel into his RI company’s distribution fleet and has helped 4,000 customers replace oil with biodiesel. His efforts have displaced nearly 4 million gallons of oil in the past seven years. Malloy is also being recognized for the impact he has had on reducing emissions statewide by working in the RI legislature to make biodiesel a more affordable fuel option.
Replacing petroleum fuel with biodiesel that is produced locally from recycled cooking oil has the benefits of increased energy security, stronger local economies, improved air quality, and reduced contributions to global climate change.
“I am honored to be recognized,” says Malloy. “I’m passionate about recycling waste and creating an outlet for less expensive and cleaner-burning domestically-made fuel that displaces petroleum.”
Malloy is also owner of Black Bear Biodiesel in Plainfield, Vermont, which is a two-year-old restaurant oil collection recycling service and biodiesel distributor serving northern and central Vermont. The company plans to have drive-up fill-up stations at their Plainfield location in late May.
“I look forward to bringing this same passion for recycling and emissions reduction and petroleum displacement to Vermont as well, while at the same time saving locals money by providing a more efficient, cleaner fuel and an affordable replacement for petroleum,” says Malloy.
The other four recipients of the award are the City of Boston Massachusetts, the City of Nashua New Hampshire, Oakhurst Dairy in Maine and New Hampshire, and the University of Vermont.
was funded through a U.S. Department of Energy grant that identified barriers to the proliferation of alternative fuels and how to remove them. There are nearly one hundred Clean Cities Coalitions around the country whose purpose is to help reduce the use of petroleum, cut emissions, and promote alternative fuel options. The Northern Stars program was developed by the five Northern New England Clean Cities Coalitions and is just one of the ways that these coalitions promote the use of alternative fuels in fleets.
This project is funded by a U.S. Department of Energy grant awarded to Maine Clean Communities, a program of the Greater Portland Council of Governments (GPCOG), and other Northern New England Clean Cities Coalition grant partners.
More information on the Northern Stars program can be found on the Vermont Clean Cities Coalition website at www.uvm.edu/vtccc.
2014 was a busy year for the Vermont Bioenergy Initiative as we engaged in national outreach efforts to share our work connecting diversified agriculture and local renewable energy production for on-farm and community use in ways that be applicable to rural areas around the country. These rural areas are often at “the end of the pipeline” and are subject to higher and more volatile costs for energy. The Vermont Bioenergy Initiative “local production for local use” model shows that rural communities can produce some of their own energy, thereby improving their energy security and benefitting from more predictable and affordable energy prices. Any farm in any part of the country can grow and process their own fuel, using the best practices developed by the collaborating farms and UVM Extension researchers working in partnership with the Vermont Bioenergy Initiative. Funding for our program work to support research, technical assistance, and infrastructure development in emerging areas of bioenergy was secured by US Senator Patrick Leahy and the US Department of Energy.
Recent news we distributed to local, regional, and national audiences includes:
Visit the Green Energy Times website for our ongoing column, Emerging Frontiers in Bioenergy and follow the Vermont Bionenergy on Twitter for current news, trends, and tweets on renewable energy in Vermont and beyond.
- Biomass Boot Camp, February 23, Catonsville, MD
- Farm Energy IQ – Training for NE Ag Service Providers in VT February 23- 25, Fairlee, VT
- ACI’s 4th Carbon Dioxide Utilization Conference 2015 February 25-26 San Antonio, TX
- 2015 Executive Leadership Conference. 25 February – 1 March 2015. Phoenix, Arizona
- World Agri-Tech Investment Summit. March 3-4, 2015 San Francisco, CA
- Waste to Biogas and Clean Fuels Finance and Investment Summit. March 3-4 San Jose, CA
- Farm Energy IQ – Training for NE Ag Service Providers March 10-12, 2015 State College, PA
- Advanced Bioeconomy Leadership Conference March 11-15, 2015 Washington, DC
- Next-Generation Defense Energy Symposium. 17 – 18 March, 2015. Washington, United States
- WEBINAR: Using B100 in Our Class-8 Trucking Operations (60 trucks) in Tennessee March 19, 2015 10:00 AM ET
- ACI’s Annual Lignofuels Americas Summit March 25-26, 2015 Milwaukee, WI
- Forest Products and Timberland Investment Conference. March 31-April 1, 2015. New York, NY
- Applying Renewable Energy – Online Training April 01, 2015 at 09:00 AM to June 30, 2015 at 06:00 PM
- Farm Energy IQ – Training for NE Ag Service Providers in NJ, April 8- 10, Bordentown, NJ
- 5th Defense Renewable Energy Summit. 7-8 April 2015. Arlington, VA
- Good Jobs, Green Jobs 2015 April 13 Washington, D.C
- 2015 Northeast Biomass Heating Expo. April 16-18, 2015. Portland, ME
- Introduction to Renewable Energy Technologies Start date: 20 to 22, 2015
- International Biomass Conference and Expo. 20 -22 April 2015. Minneapolis, MN
- 37th Symposium on Biotechnology for Fuels and Chemicals. April 27 – 30, 2015 San Diego, CA