Trucking fleets operating RNG-fueled trucks save money, slash emissions, and benefit from proven, affordable, clean technology without delay and without compromising existing business operations. RNG is a solution that allows fleets to achieve better than zero results immediately. It is not just carbon reductions that are in play, however. More demanding federal limits on nitrogen oxide emissions and increased durability requirements for new engines make RNG a smart choice for truck operators looking for an alternative to diesel trucks and their increasingly complex emission control systems.
2024 saw the launch of Cummins’ highly anticipated 15L X15N engine, leading a suite of Cummins natural gas engines serving commercial operators. Available now in Peterbilt, Kenworth, and Freightliner chassis, the X15N delivers up to 500 horsepower and torque of up to 1,850 lb-ft, providing a viable workhorse alternative to traditional diesel engines.
Additionally, the Volvo Group’s and Westport Fuel System’s Cespira joint venture is continuing efforts to accelerate the growth of High-Pressure Direct Injection (HPDI) technology into North America. Volvo already uses this technology in Europe for its natural gas internal combustion engine offerings. HPDI technology can run on zero- or carbon-neutral fuels (i.e. hydrogen and biomethane) with diesel-like fuel efficiency, power, and torque.
There are approximately 1,200 heavy-duty natural gas fueling stations in the U.S. While nearly all natural gas motor fuel dispensed in California is RNG, it’s not just California fleets that have access to it. In 2024, 63 percent of RNG motor fuel use occurred outside of California, up from 57 percent in 2023.
The carbon intensity (CI) of renewable natural gas motor fuel continues to drop. Derived from landfills, wastewater, forest waste, food waste, and agricultural waste, RNG continues to make up more and more of the natural gas motor fuel market. In 2023, 79 percent of natural gas used in on-road transportation was RNG, up from 69 percent in 2022. Since RNG is interchangeable with any natural gas vehicle (NGV), RNG is one ultra-low-carbon/carbon-negative fuel that does not require the build-out of new specific infrastructure since it is dispensed from existing stations.
Data from the California Air Resources Board shows the average carbon intensity of the bio-CNG mix sold in California in 2024 dropped to -194 gCO2e/MJ, the lowest CI of any transportation fuel or technology in the state, including electric. That means that fleets operating natural gas vehicles in California are achieving a carbon-negative transportation outcome today.
Sourced domestically, natural gas motor fuel is less volatile to global market swings, providing price stability and savings to fleets of all sizes compared to traditional fuels. Toward the end of 2024 the price for natural gas was $0.70 to $0.83 less than diesel in some regions of the country. For fleets with trucks that drive tens of thousands of miles and consume significant gallons of fuel, the price differential results in real savings and helps to offset the higher price of natural gas trucks.
It is also important to highlight that fleets contracting for RNG often see even more savings as they can benefit from economic value associated with renewable identification numbers and in some cases low-carbon fuel credits or clean fuel credits. Under the U.S. EPA’s Renewable Fuel Standard Program, RNG sales generate RINs that can be sold to obligated parties (e.g. fuel marketers and fleet users), sometimes for several dollars per gallon equivalent. For fleets moving to natural gas trucks, ensuring that they are negotiating with fuel suppliers for a portion of the value of RNG credits can be critical to achieving a lower overall total operation of cost and accelerating payback.
Another important financial incentive for NGV fleets has been the $0.50/gallon Alternative Fuel Tax Credit (AFTC). Fleets interested in building their own fueling facilities also benefit from the Alternative Fuel Infrastructure Tax Credit that is now worth $100,000 per qualifying piece of alternative fuel refueling equipment. Of course, changes in Washington are spurring change in energy and tax policy. The outlook for extending incentives that favor natural gas and domestic renewable fuels like RNG is bullish. The Transport Project’s top priority this year is securing passage of the Renewable Natural Gas Incentive Act, which would provide a $1.00/gallon tax credit to end users of natural gas motor fuel derived from renewable sources.
Perhaps more so than any time in the recent past, the regulatory outlook for truck emission requirements is extremely volatile. California’s regulatory future is uncertain. To make increasing emission reduction gains quickly in the commercial space, California regulators should reembrace ultra-low-carbon, near-zero technologies like RNG-fueled trucks. At the federal level, U.S. EPA’s reopening of its Phase 3 HD GHG regulations likely will also support the growth of technologies like RNG.
NGVs fueled by RNG offer a more cost-effective, less disruptive yet still progressive compliance schedule for commercial fleets of all shapes and sizes. RNG-fueled trucks allow fleets the ability to affordably comply today on their road to achieving full carbon neutrality.
Daniel J. Gage is President of The Transport Project, a national coalition dedicated to the decarbonization of North America’s transportation sector through the increased use of gaseous motor fuels including renewable natural gas and hydrogen.
The propulsion challenges facing society are complex and multi-dimensional. Decarbonization is at the core of these challenges and, unfortunately, there is no singular fuel type or technology solution to solve them all. Regardless, the transportation segment requires decarbonization – and it requires it yesterday. This truth and its aggressive timetable are why the internal combustion engine is part of the larger solution to reduce lifecycle carbon emissions to address climate change trends.
Regulating tailpipe carbon will not solve the problem of carbon dioxide alone. Reducing the carbon intensity of electric grids will take time. Electric vehicles and plug-in hybrids are great solutions for certain applications, but also need time to reach critical mass. In the meantime, we continue to rely on liquid fuels for combustion engines in conventional vehicles, hybrids, and plug-in hybrids for many on- and off-road applications. Therefore, low-carbon intensity fuels in conjunction with powertrain electrification/hybridization is needed.
Hybridization and low-lifecycle carbon intensity fuels can work together to contribute to a low-net carbon future. The internal combustion engine is ready to use low- and zero- carbon fuels to quickly move down sustainable fuels pathways, power hybrids, and enable more rapid vehicle electrification.
Any decarbonization strategy needs to utilize longer-term low carbon fuels / renewable fuels. The immediate impact of drop-in alternative fuels on legacy vehicle fleets is too great to be dismissed, especially with an existing delivery infrastructure. Industry and legislators alike need to realize it is not always about net zero. Having low-carbon content across a broad scale has a significant decarbonization impact across all transportation sectors. Low-carbon fuels offer decarbonization benefits today as we prepare for the future.
Stanadyne, a leading global fuel and air management systems supplier, is continuing to develop engine innovations enabling the efficient and economic use of low-carbon and future fuels. This continued investment is necessary, as future fuels are propulsion technology drivers with fuel system challenges still needing solutions. As we head down low-carbon fuel pathways, some fuels are thermodynamically challenging with their lower heating values. This and other characteristics make them challenging to use. Their lubricity and viscosity also can be issues, which affect engine start-stop functions and maintaining high fuel delivery pressures for cleaner combustion.
Consumers, vehicle manufacturers, and propulsion systems providers want diesel performance and total cost of ownership, but with a low-carbon fuel without the shortcomings, difficulties, and reduced range. There is a growing impatience for fuel delivery solutions to be developed. Automakers have stated a need for “hyper-collaboration” with suppliers to develop and implement clean propulsion options to meet state and federal legislation.
There are many technology pathways to achieve low- and net-zero carbon emissions. However, hybrid powertrains powered by low-carbon intensity fuels are one of the fastest tracks to decarbonization development and deployment. Alcohol, hydrogen, propane, compressed natural gas, dimethyl ether (DME) and other sustainable low-carbon intensity fuels can energize these small displacement, high-energy output, high speed engines. High-pressure fuel delivery systems operating at twice the flow help overcome alternative fuels’ low energy content. Many systems already can handle biodiesel and other drop-in renewable fuels currently available in the market.
Powertrain and fuel system innovation are key to a sustainable future. Stanadyne is accelerating engine innovation with its growing portfolio of renewable and future fuel complaint products. Our breakthrough direct injection liquid propane system, hydrogen direct injection design platform, and high-pressure direct injection pump and injector advancements are driving internal combustion engine decarbonization.
A low-carbon approach isn’t exclusive to fuels. Stanadyne takes a lifecycle approach by designing products for remanufacturing to support a circular internal combustion engine economy. More than two decades of remanufacturing expertise at scale and quality has kept 15 million pounds of waste out of landfills.
Advanced internal combustion technology will continue to be a dominant part of the fuel and technology mix for decades to come. New engine designs and fuels, like hydrogen and e-fuels, will drive decarbonization. As zero emission technologies continue to emerge, expect a world where engine technologies and fuels compete, complement, and co-exist.
Michael Hornby is Global Vice President of Product Engineering at Stanadyne
The world’s automakers have long pursued diverse alternative fuel technologies for good reason. Simply, the future of transportation may well unfold in surprising ways. Among the many advanced fuels explored has been hydrogen, and in fact, even amid today’s focus on battery electric power there continues to be significant interest in this zero-carbon fuel. Here’s a look at the amazing developmental work that BMW was conducting on hydrogen vehicles 18 years ago, as documented in Green Car Journal at the time. We lend perspective on the BMW H2R hydrogen vehicle’s evolutionary importance by presenting this article just as it ran in Green Car Journal’s Winter 2004 issue.
Excerpted from Winter 2004 Issue: In the quest for environmental leadership, there’s often a delicate balancing act as designers strive to create cars that are environmentally positive, yet offer the features drivers most desire. Clearly, core values must remain in focus during the process to retain the values and identity that distinguish carmakers from their peers.
This has been BMW’s mission over the past decade as it has pursued hydrogen cars and the performance to go with them. You can’t, after all, lay claim to the title “ultimate driving machine” if your zero-to-sixty times are glacial and you slog through corners, even if powered by clean-burning hydrogen.
For years, BMW has been refining the liquid hydrogen fueled sedans that it has placed in field trials on multiple continents, championing the use of hydrogen in conventional engines in lieu of the more popular fuel cell. These hydrogen vehicles have improved over the years, making the most of renewable hydrogen fuel in their internal combustion powerplants.
Now, this automaker is putting its stamp on the hydrogen record book with adaptations of this hydrogen engine technology, fielding a land speed record car that has passed the 185 mph mark and claimed an additional eight records as well. Along the way it has achieved recognition by the Federation Internationale de l’Automobile as the fastest hydrogen car in the world.
A distinction achieved at the high-speed Miramas Proving Grounds in France, BMW’s 285 horsepower H2R hydrogen car was propelled to 100 km/h in about 6 seconds, setting records in the flying-start kilometer; standing-start ½ kilometer, kilometer, and 10 kilometers; flying-start mile; and standing start 1/8 mile, ¼ mile, mile, and 10 miles. The record car was piloted by BMW works drivers Alfred Hilger, Jörg Weidinger, and Günther Weber, who took turns at the wheel of the H2R during their record-breaking session.
The sleek and imposing car was conceived, designed, and developed by the automaker’s subsidiary, BMW Forschung und Technik GmbH. Its carbon fiber exterior was designed by DesignworksUSA, the California-based strategic design consultancy owned by BMW Group. This is the same design house that worked on the BMW E1 and E2 electric car prototypes in the early 1990s.
This BMW is motivated by a 6.0-liter V-12 engine modified to run on hydrogen, a gasoline powerplant normally found in the automaker’s 760i model. Among the engine modifications is a fuel injection system adapted to handle hydrogen, which uses injection valves integrated into the intake manifolds. Special materials are also used for the combustion chambers. Liquid hydrogen is carried in a vacuum-insulated, double-wall tank that’s fitted next to the driver’s seat.
Is the H2R just a whimsical exercise? Nope, it’s part of a larger vision. In fact, BMW plans to launch a dual-fuel 7 Series that will run on hydrogen or gasoline, sometime during the production cycle of the present model, surely at a price far lower than that of a hydrogen fuel cell vehicle. Exercises like the H2R help pave the way.
A few years ago, my wife Shelly and I visited Greece. It filled me with wonder to think about how challenging life must have been, and yet the ancient Greeks built massive architectural structures without the modern tools and machines we have today.
When I think about the last 30 years of the biodiesel industry, I am reminded of the Greek God, Sisyphus. In Greek mythology, he pushed a giant boulder uphill for eternity. I’d say our industry, like other alternative fuels, has felt that way a number of times.
However, I’d say fuels like biodiesel, renewable diesel, and sustainable aviation fuel are better represented by Athena. She was known to represent wisdom and the virtues of justice, skill, and victory. We have never let the challenges overtake our spirits. Instead, we have held our heads high and strategized our next moves. At last, we’re reaching a point we had long dreamed of – perhaps even beyond what we initially envisioned. The tables have turned. Our fuels are in demand to help people meet their goals and help America reach a low-carbon future. We’re here and we’re making an impact now – not waiting until decades into the future.
As the biodiesel industry celebrates its 30th anniversary, I am reminded that the soybean farmers, the soybean checkoff, and leaders who founded our organization had great faith, foresight, and fortitude. These humble beginnings in 1992 and the small group of leaders and visionaries who started our industry are the reason our industry, even today, seems like a family – and now a growing family! In 1992, no biodiesel had been produced commercially yet, and today, we produce 3 billion gallons a year of biodiesel and renewable diesel.
The emphasis on carbon reduction across the globe has opened new doors. Net-zero commitments from governments and corporations have raised interest in low carbon fuels like never before. We are making great strides in markets like marine, rail, and aviation that previously had been, at best, neutral to us. Likewise, when considering options to help reduce carbon dioxide and other greenhouse gas emissions from their vehicles and equipment, Original Equipment Manufacturers and fleets are also taking a much deeper look at us.
While electric solutions are still under development, clean advanced biofuels such as biodiesel and renewable diesel are readily available now for use in existing diesel engines. Most OEMs, including Ford, General Motors, Stellantis, Cummins, and many others, currently support the use of 20 percent biodiesel blends in their diesel equipment. However, forward-looking fleets from coast to coast – including several in California, Chicago, Madison, Washington D.C., and New York City – are looking to higher blends of biodiesel, even up to B100, to lower their carbon footprint even more dramatically.
Our vision statement says that “biodiesel, renewable diesel, and sustainable aviation fuel will be recognized as mainstream low carbon fuel options with superior performance and emission characteristics.” There is room for all these fuels at our industry’s family table. In that spirit, the National Biodiesel Board has added another leaf.
This January, we made it official: We are now Clean Fuels Alliance America.
This new brand will transform our image and position us as a proven, innovative part of America’s clean energy mix now and in the future. In the process, we’re inspiring America’s energy and transportation leaders to discover new sources of scalable, cleaner fuels.
Biodiesel remains a foundation of our association. Our country couldn’t be having real conversations about carbon reduction targets today if it weren’t for the work of those in biodiesel.
Athena was known as ‘one who fights in front.’ As Clean Fuels Alliance America, we move to the front, proudly blazing a new path forward in clean energy.
Donnell Rehagen serves as the CEO for Clean Fuels Alliance America, biomass-based diesel’s preeminent trade association. Clean Fuels Alliance America is funded in part by the United Soybean Board and state soybean board checkoff programs.
Around the nation, fleets are facing more scrutiny than ever before to reduce emissions. Headlines in recent months shout that it’s ‘now or never’ if we want any chance at slowing climate change. If we really want to make a difference on the environment, solutions need to be implemented immediately to start replacing dirty diesel and gasoline vehicles from the road as quickly as possible.
While fleet owners I talk to understand the significance of operating a clean fleet, I also continue to hear the same line, “I can’t be environmentally sustainable if I’m not financially sustainable.” Mistakenly, many fleet owners think that going green has to be an expensive endeavor. While that is true of some alternative fuel options, it’s not the reality for every energy source. Propane autogas is an affordable, clean, and available fuel that’s used by thousands of fleets around the country every day.
As we think about the larger decarbonization effort, it will take a diverse mix of clean energy sources to achieve this goal. Propane autogas’ role in the movement is to ensure energy equity by offering a low-carbon solution to medium-duty (class 3-7) fleet owners without cost-prohibitive barriers. When you factor in the cost of a new vehicle and the costs for fuel, fluids, maintenance, and repairs, propane autogas provides the lowest costs for the lifetime of the vehicle, providing a short return on investment.
Let’s consider just the cost of the fuel itself. As oil prices fluctuate, propane autogas can beat diesel on price per gallon by as much as 50 percent. In most cases, propane autogas suppliers will work with fleet owners to create a mutually beneficial fuel contract that allows fleets to lock in a set price per gallon for a period of time. This is another layer of protection against fluctuating fuel prices and is especially helpful during times of high gasoline or diesel prices like much of the country has experienced in recent weeks.
Plus, propane autogas infrastructure is also affordable. In most cases, propane suppliers will provide the infrastructure equipment to a fleet at no cost in exchange for a mutually beneficial fuel contract. The refueling infrastructure is also designed to scale and can easily adapt to the varying needs of any size fleet.
So, how clean is propane autogas? Today’s engines are 90 percent cleaner than mandated EPA standards, with effectively zero particulate matter emissions and 96 percent fewer NOx emissions than clean diesel engines. The latest propane autogas engine technology is classified as near-zero and has moved the fuel even closer to achieving zero emissions levels.
Not to mention, a recent study by the Propane Education & Research Council found propane-powered medium-duty vehicles provide a lower lifetime carbon footprint in the majority of U.S. states when compared to medium-duty EVs that are charged using those states’ electric grid. This is due to the amount of carbon that is produced from each state’s unique energy mix for electricity generation using coal, petroleum, or other primary sources.
While EVs may have zero tailpipe emissions, emissions are generated prior to the wheels turning on the road through the electric grid and the powertrain (chiefly battery manufacturing) production. When comparing the difference in lifecycle equivalent carbon dioxide (CO2eq) emissions of a single medium-duty vehicle, propane autogas on a national average emits 125 tons of CO2eq less than an electric medium-duty vehicle.
The study also reviewed the lifetime carbon emissions of a medium-duty vehicle operating on renewable propane – an energy source made from a mix of waste residues and sustainably sourced materials, including agricultural waste products, cooking oil, and meat fats. It has the same chemical structure and physical properties as conventional propane, but because it’s produced from renewable, raw materials, it has an even lower carbon intensity. As the study found, renewable propane medium-duty vehicles currently provide a lower carbon footprint solution than comparable EVs in every U.S. state except Vermont.
As we think about both the immediate need to start reducing emissions today and the long-term goal of providing a better environment for the next generation, propane autogas is a critical energy source that will help to move the needle in both situations. Decarbonization will not be solved overnight. But propane’s role as a clean energy source that can help fleets conquer their financial sustainability will set us on the path to one day reach better environmental sustainability.
Steve Whaley is the director of autogas business development for the Propane Education & Research Council, Propane.com/Fleet-Vehicles
Well, this should be no surprise. Reuters reports what we’ve suspected all along because there’s a long history of this happening: Low gasoline prices are negatively impacting the sale of alternative fuel vehicles including those running on natural gas and electricity.
Not surprisingly, with lower gasoline prices comes a decided uptick in purchases of larger and lower efficiency vehicles, especially SUVs. Beyond personal transportation, the commercial sector is also being hit hard because the cost differential involved in buying large natural gas trucks presently fails to pencil out well compared to conventionally powered models.
Is this a trend? Only short term, really. Green Car Journal editors have noted such occurrences over the past two decades and the trend has always ebbed and flowed with varying fuel prices, incentives, and other factors. While the long-term prospects for battery electric vehicles hinge on lower cost batteries in the future, hybrids and high efficiency conventional vehicles are here to stay.
Over the 10 year history of Green Car Journal’s Green Car of the Year award program, there has never been a battery electric car that has been compelling enough to be recognized as the best-of-the-best in an ever-expanding field of ‘green’ cars. That has changed with the groundbreaking BMW i3, Green Car Journal’s 2015 Green Car of the Year®.
The BMW i3 came out on top of a field of finalists that included the Audi A3 TDI, Chevrolet Impala Bi-Fuel, Honda Fit, and VW Golf. The array of technologies and fuels represented included high efficiency gasoline, electric drive, clean diesel, and natural gas.
BMW’s i3 stands out as one of the most innovative vehicles ever to be introduced by any major automaker. It breaks the mold – literally – with a strong and lightweight body using materials and technology at home on the race track, and now used for the first time to construct a mainstream production car. It is a milestone, forward-thinking approach.
Meeting both near-term and far-reaching goals is no easy thing. The challenge is to design and build cars that offer meaningful environmental achievement while delivering the traditional touchstones desired by new car buyers, among them comfort, safety, convenience, connectivity, performance, and value. Also important in the world of advanced vehicles like battery electric cars is a significant commitment to the manufacturing and sale of these vehicles that goes beyond a few thousand units sold in select geographical areas. BMW’s commitment with the i3 is focused not only nationally in the U.S., but globally as well.
Offering a lightweight carbon fiber reinforced plastic (CFRP) body on an aluminum space frame, BMW’s innovative i3 brings environment-conscious drivers all-electric drive with an optional internal combustion range extender. The most unique aspect of the i3 is the car’s body structure, which incorporates the first-ever use of carbon fiber reinforced plastic (CFRP) to form the body and passenger cabin of a mass-production vehicle. CFRP is as strong as steel and 50 percent lighter. It is also 30 percent lighter than aluminum.
This BMW’s drive module includes an electric drivetrain, 5-link rear suspension, and an aluminum structure. Its lithium-ion battery pack is mounted mid-ship beneath the floor. Strategic placement of the 450 pound battery pack and drive components provides a very balanced 50-50 weight distribution to enhance handling and performance.
Acceleration is crisp, with a 0-60 elapsed time of 7.2 seconds provided by an electric motor producing 170 horsepower and 184 lb-ft torque. With a curb weight of just 2,700 pounds, the i3 has is sprightly even at highway speeds. Strong regenerative braking characteristics often allow the i3 to be driven with just the accelerator pedal in city driving. When a driver lets off the accelerator, regen slows the car quickly and allows it to come to a complete stop without touching the brake pedal.
Charging at home with an available 220 volt charger delivers a full charge in about three hours. Where available, public DC fast charging can bring an i3 to 80 percent state-of-charge in 20 minutes and a full charge in 30 minutes. The i3 BEV features an 81 mile EPA estimated range on batteries. The i3 REx, equipped with an internal combustion range extender that creates on-board electricity as needed to help keep batteries charged, features a 72 mile battery driving range and 150 miles total with the range extender.
Efficiency is a given. EPA rates the i3’s city fuel economy at 137 MPGe (miles per gallon equivalent) and 111 MPGe on the highway, with a combined 124 MPGe. For the REx-equipped model, EPA rates mileage at 117 MPGe combined.
The 2015 Green Car of the Year® is selected by a majority vote of an award jury comprised of Green Car Journal staff and invited jurors, including TV personality and car aficionado Jay Leno plus leaders of the nation’s most high-profile environmental and efficiency organizations. These jurors include Jean-Michel Cousteau, president of Ocean Futures Society; Matt Petersen, board member of Global Green USA; Mindy Lubber, President of CERES; Kateri Callahan, President of the Alliance to Save Energy; and Dr. Alan Lloyd, President emeritus of the International Council on Clean Transportation.
The diversity of new car models at showrooms today reflects an evolving and sophisticated market in which a growing number of new car buyers have decided that environmental performance must meet their needs and expectations, on their terms. As it happens, 2015 Green Car of the Year jurors have clearly decided that this year, the electric BMW i3 does it best.
It is an exciting time to be involved with the auto industry, or to be in the market for a new car. The auto industry has responded splendidly to the challenge of new emission, fuel economy, and safety standards. The public is offered a greater than ever selection of vehicles with different powertrains, lightweight materials, hybrids, and electric drive vehicles across many platforms. We see increasing numbers of clean diesel vehicles and natural gas is making a resurgence, especially in the heavy-duty sector.
The positive response by the auto industry to the ever-tightening pollutant emission and fuel economy standards includes tactics such as the use of aluminum in the Ford F-150 and the increased use of carbon fiber by BMW, among many innovations introduced across many models and drivetrains. These evolutionary changes are a major tribute to the automobile engineers who are wringing out the most they can in efficiency and reduced emissions from gasoline and diesel engines. I view this evolutionary change as necessary, but not sufficient to meet our greenhouse gas goals by 2050.
New car ownership is currently down in Europe and is leveling off in the U.S. For global automotive manufacturers, however, this trend is offset by the dramatic growth in places like China and India. The potential for dramatic growth in the developing world is clearly evident: In the U.S., there are about 500 cars per thousand people, compared to about 60 and 20 in China and India, respectively.
How can these trends be reconciled with the environmental and health concerns due to climate change and adverse air quality in the developing world? The evidence for climate change accumulates by the day. Hazardous air quality in many major cities in China has drawn global attention, providing a visual reminder of how far the developed world has come and how much environmental protection needs to be accelerated in the developing world. Damaging air pollution is increasingly seen as a regional and even worldwide challenge. Dramatic economic growth in many developing countries is generating pollution that knows no boundaries. Air pollution from China, for example, fumigates Korea and Japan and is even transported across the Pacific to impact air quality in California and other Western states.
It will take a revolutionary change to provide personal mobility without unacceptable energy and environmental consequences. As a recent National Academy of Sciences (NAS) document states, it is likely that a major shift to electric drive vehicles would be required in the next 20 to 30 years. Electric drive vehicles, coupled with renewable energy, can achieve essentially zero carbon and conventional pollutant emissions. The NAS report also predicted that the costs of both battery and fuel-cell electric vehicles would be less than advanced conventional vehicles in the 2035-2040 timeframe.
This transition will not occur overnight and we will be driving advanced conventional vehicles for many years to come. In a study for the International Council on Clean Transportation, Dr. David Greene calculated that the transition could take 10 to 15 years, requiring sustained investment in infrastructure and incentives in order to achieve sustained penetration. While this investment is not inexpensive, it is projected that the benefits of this investment will be 10 times greater than the costs.
So where do we stand today on electric vehicles? We are seeing an unprecedented number of hybrid, plug-in hybrid, and battery electric vehicles across many drivetrains and models. There were about 96,000 plug-in electric vehicles sold or leased in the U.S. last year and more than 10 new PEV models are expected this year. While the sales fall short of some optimistic projections, it is an encouraging start after many years of more hope than delivery. The FC EV is expected to see significant growth after the initial limited introduction of fuel cells in the 2015-2017 timeframe by five major automobile companies.
It will take many years of sustained increasing penetration into new car sales to make this revolution a success. It is indeed a marathon and not a sprint. The challenge is how to ensure sustained sales of electric drive vehicles in the face of the many attributes of advanced technology conventional vehicles. Electric drive vehicle drivetrains have an affinity with the increasing amount of electronics on board the vehicle, which might ultimately yield very interesting, capable, and competitive vehicles.
I have little doubt that if we are serious about our energy, environmental, and greenhouse gas goals the revolution in technology will occur. All the major automobile companies seem to recognize this in their technology roadmap, which includes advanced conventional vehicles, plug-in hybrid vehicles, battery and fuel cell electric vehicles.
In conclusion, the next 20 years promise to be equally as challenging and exciting as the last 20 years. I have little doubt that the automobile engineers are up to the task ahead, but whether we have the political fortitude to stay the course to achieve the necessary air pollution and GHG reductions is far less certain.
Dr. Alan Lloyd is President Emeritus of the nonprofit International Council on Clean Transportation (ICCT). He formerly served as Secretary of CalEPA and Chairman of the California Air Resources Board.
Toyota has unveiled its hydrogen fuel cell vehicle that will be available for sale to California customers in summer 2015. The Toyota FCV four-door sedan is forward-looking with its blending of traditional sleek styling and aggressive futuristic exterior touches.
This is quite a departure from the Hyundai Tucson Fuel Cell now on sale in California that packages hydrogen fuel cell power within a conventional-looking Tucson SUV. Honda took a more middle-of-the-road approach with its FCX Clarity fuel cell sedan that it began leasing to limited numbers of California customers in 2008, offering an advanced body design that, while not necessarily wildly futuristic, did preview many of the styling cues that would show up in Honda’s model lineup in future years.
Like its fuel cell competitors, the Toyota FCV is driven by electric motors powered by electricity electrochemically generated by a hydrogen fuel cell. Since there is no combustion, no CO2 is produced and the car emits only water vapor. The Toyota FCV is expected to travel 300 miles on a tank of hydrogen, providing the advantages of an electric car without the limitations of short driving range. Refueling is said to take less than five minutes.
While hydrogen fueling opportunities are admittedly sparse these days, Toyota is working toward a solution in California through its partnership with FirstElement Fuels. The aim is to support the long-term operation and maintenance of 19 new hydrogen refueling stations in that state, accessible by all model fuel cell vehicles. The availability of hydrogen fueling will determine where automakers initially offer their first fuel cell vehicles, thus the interest in California.
Many believe that the ultimate goal for electric transportation is the hydrogen fuel cell vehicle (FCV), with battery electric vehicles being just a step along the way. Hyundai is skipping this step and concentrating on developing and marketing FCVs. The automaker notes that affordable electric vehicle technology is best suited to smaller urban vehicles, not to larger family and utility vehicles that many families require to meet all of their needs.
To that end, Hyundai is poised to offer its next-generation Tucson Fuel Cell vehicle in Southern California Hyundai dealers starting sometime this spring. Production is taking place at the automaker’s Ulsan plant in Korea. Hyundai already began production of the ix35 Fuel Cell, the Tucson’s equivalent in Europe, at Ulsan in January 2013. Since the Ulsan plant builds the gasoline-powered Tucson CUV, this allows Hyundai to take advantage of both the high quality and cost-efficiency of its popular gasoline-powered Tucson platform.
Hyundai’s third-generation fuel cell vehicle features significant improvements over its predecessor, including a 50 percent increase in driving range and 15 percent better fuel efficiency. The Tucson and ix35 Fuel Cell are equipped with a 100 kilowatt electric motor, allowing a top speed just shy of 100 mph. Instantaneous 221 lb-ft torque from the electric motor means spritely acceleration.
Sufficient hydrogen for an approximate 370 mile range is stored in two hydrogen tanks. Refueling is accomplished in less than 10 minutes, providing daily utility comparable with its gasoline counterpart. Electrical energy is stored in a 24 kilowatt-hour lithium-ion polymer battery that’s been jointly developed with LG Chemical. The fuel cell reliably starts in temperatures as low as -20 degrees C (-4 degrees F). Unlike battery electric vehicles there is minimal capacity decrease at very low temperatures.
Hyundai’s fuel cell fleet has completed over two million durability test miles since 2000. Extensive crash, fire, and leak testing have been successfully completed. Hyundai says that high reliability and long-term durability come as a matter of course with the power-generating fuel cell stack, which has no internal moving parts.
The Hyundai Fuel Cell will be leased for $499 per month on a 36 month term, with $2,999 down. This includes unlimited free hydrogen refueling and At Your Service Valet Maintenance at no extra cost. Hyundai will initially offer the Tucson Fuel Cell in the Los Angeles/Orange County areas at four dealerships that will have hydrogen refueling capability. The automaker says that availability will expand to other regions of the country consistent with the accelerating deployment of hydrogen refueling stations.
Hyundai is also partnering with Enterprise Rent-A-Car to rent the Tucson Fuel Cell at select locations in the initial lease regions. This will allow interested consumers to evaluate the Tucson Fuel Cell for their lifestyles on a multi-day basis. Rentals are also planned sometime this spring.
Honda has been an industry leader in developing and deploying fuel cell vehicles for nearly two decades. The Honda FCX was the world’s first production fuel cell vehicle when it was introduced to the U.S. and Japan in December 2002. This was followed by the second generation
FCX Clarity in 2008, the first dedicated production fuel cell vehicle. Honda plans to offer its next-generation fuel cell vehicle in the U.S. and Japan in 2015, followed by Europe.
The sleekly-styled Honda FCEV Concept sports an ultra-aerodynamic body unlike anything on the road today. While Honda says its extreme styling may not make it into production, the concept does express a potential styling direction for fuel-cell vehicles in the coming years.
Inside, the Honda FCEV Concept provides ample seating for five thanks to new powertrain packaging efficiencies, which include the world’s first application of a fuel cell powertrain integrated completely within the engine compartment. The fuel-cell stack has an output of over 100 kilowatts with a power density of 3 kilowatts per liter, a 60 percent improvement from previous iterations. The stack size was reduced by a third compared to the FCX Clarity. This new fuel cell technology has the potential to be used in multiple vehicle types in the future.
The next generation Honda FCEV is anticipated to deliver a driving range of more than 300 miles, about 60 miles more than the FXC Clarity. Fueling can be handled in about three minutes.
Since the nation’s hydrogen refueling infrastructure remains sparse and is still a major challenge for fuel cell vehicles, Honda has joined with the public-private partnership H2USA to coordinate research and identify cost-effective solutions for delivering affordable, clean hydrogen fuel in the U.S. Honda also entered into a long-term collaborative agreement with General Motors earlier this year to co-develop next-generation fuel-cell systems and hydrogen storage technologies, aiming for the 2020 time frame.
While drivers in many other countries can choose from dozens of passenger car models operating on compressed natural gas (CNG), that’s not the case here. We have one: Honda’s Civic Natural Gas.
That changes with the coming 2015 Chevrolet Impala Bi-Fuel Sedan. Like the Civic, the alternative fuel Impala comes straight from the manufacturer – in this case Chevy – without the extra step of fuel conversion by an outside vehicle modifier. Current natural gas pickups and vans from Chevy, Ford, GMC, and Ram are sent to aftermarket suppliers for installation of natural gas components.
The new bi-fuel Impala will be able to run on either gasoline or CNG, addressing the range anxiety issue associated with dedicated vehicles that run exclusively on an alternative fuel. It also allows owners to use the least expensive fuel at the time of fill-up. The system seamlessly switches from natural gas to gasoline if the CNG tank is depleted. Drivers can also choose to run on their fuel of choice with a dashboard switch. Total range with both fuels is an expected 500 miles.
Making a bi-fuel Impala requires changes to the 3.8 liter V-6 engine so it can burn either fuel, plus the addition of regulators, filters, high pressure gaseous fuel lines, and a CNG fill receptacle. A large CNG tank is added in the trunk and does reduce cargo capacity. The system is factory-engineered and fully warranted.
For most Americans, our transportation choices are limited to the fuels offered at the local gas station. For generations, regular gas stations served our needs pretty well, but America’s transportation needs are changing. Every day we learn about new choices in alternative fuel vehicles, advancements in vehicle efficiency, and new, cleaner types of fuel, so it’s bewildering that gas stations haven’t kept up with these changes. Gas stations today offer a fundamental lack of choices and are no longer in step with the way Americans seek to move about their lives.
With 160,000 fueling locations across America, gas stations outnumber McDonalds, Burger King, Subway, Starbucks, and Taco Bell…combined. But as consumers’ transportation needs change, there is no effort by Big Oil to change with them. Fifty percent of the cars in Big Three showrooms are now capable of being powered by something besides oil. Domestically produced renewable fuels have surpassed imports from Saudi Arabia, and gas consumption is at a 10-year low – yet gas prices remain at all time record levels. Mobility is transforming in other ways with ride sharing, public transit, cycling, and telecommuting all on the rise. Yet still no change in our fueling infrastructure.
At Propel, we have created a new vision for the way gas stations serve the mobility needs of a community, one that meets the changing habits of America’s drivers. Earlier this year, we launched our first ‘Clean Mobility Center’ in Fullerton, California, to offer consumers new, more sustainable, domestic fuel and transportation choices that are more in line with their values, and also reduce our collective impact on the environment while supporting local economies and decreasing our nation’s reliance on foreign oil.
Our Clean Mobility Centers provide a distinctly different customer fueling experience, offering a full range of high performance renewable fuels (Flex Fuel E85, biodiesel) alongside the conventional gasoline that drivers use today. More than 17 million cars on American roads can fuel with something besides oil, and for those that can’t, we provide drivers an opportunity to be part of the solution and a movement towards clean mobility.
With a focus beyond fuel, our Clean Mobility Centers also offer a series of unique, community-friendly features not found at any other gas station in the nation. To maximize fuel economy, we offer free air to fill-up vehicle tires and we have installed bike repair stations so cyclists can tune up and fix bikes along their route. Additionally we have kiosks that provide local bus and other mass transit maps and routes, along with information about rideshare opportunities. Finally, we have two new features at the fueling island: recycling on the go, and the nation’s first carbon offset program, which for only $1 per fill-up allows drivers to offset the carbon emissions from their purchase right at the pump and support local clean energy projects.
Looking forward, as new, even more sustainable fuels and transportation options come to market, we’ll use the infrastructure we’re building today to offer new choices. In fact, we’re actively exploring options such as renewable gasoline and diesel, cellulosic fuels, algae-based fuels, natural gas, EV charging, and car sharing.
Just as we’ve seen in other industries, such as manufacturing labor, fair trade practices, or organic agriculture, consumer choice can be the biggest force for change in our society. At the pump, consumers can now vote with their wallets and choose a fuel company that better aligns with their values and interests. No matter what type of car they drive, consumers can use our new stations and learn about cleaner mobility options along the way. With 160,000 outlets and regular contact with customers, the fueling industry is in a unique position to engage consumers and lead them to a brighter future. So far, though, our industry hasn’t shown much leadership. America’s transportation needs are changing, and we believe it’s time our gas stations changed, too.
Matt Horton is CEO of Propel Fuels, www.propelfuels.com
Powered by propane autogas (LPG), the Maxximus LNG 2000 has set three new world records at South Georgia Motorsports Park, according to Fisher Island, Florida-based Centaur Performance Group. These latest record attempts follow additional world records set in January with the car running on liquefied natural gas (LNG).
The project, headed by financier Bruce McMahan and Indianapolis-based designer Marlon Kirby, set its latest records on LPG with the car achieving 0-60 mph in 2.6 seconds, 1/4 mile ET of 10.28 seconds, and 1/4 mile speed of 134 mph. The records set in January running on LNG were 0-60 mph in 1.96 seconds, 0-150 mph in 9.21 seconds, 1/4 mile ET of 9.63 seconds, and 1/4 mile speed of 159.9 mph. The car was driven by Marlon Kirby. The company points out that these achievements make the Maxximus the fastest powered supercar ever created using both LNG and LPG.
The Maxximus LNG 2000 uses self-pressurizing fuel tanks and is capable of running on propane autogas, liquefied natural gas, or compressed natural gas with on-demand adjustments. The car features a carbon fiber body.
Massive power is provided by a 1600+ horsepower twin-turbocharged, all-aluminum 7.0-liter V-8 with gaseous fuel injectors, boost reference gaseous regulators, and cryogenic chilled intercoolers. Amazingly, Centaur says the Maxximus is also 50-state emissions legal.