A fuel cell bus is a bus that uses a hydrogen fuel cell as its power source for electrically driven wheels, sometimes augmented in a hybrid fashion with batteries or a supercapacitor. The only emission from the bus is water. Several cities around the world have trialled and tested fuel cell buses, with over 5,600 buses in use worldwide, the majority of which are in China. [1]
Owing to the greenhouse gas emissions and particulate pollution produced by diesel buses, transport operators have been moving towards greener and cleaner buses (such as hybrid electric buses and battery electric buses) since the early 2000s. [2] However, battery electric buses lack range compared to diesel buses, take time to charge and have reduced energy storage in cold weather. [3]
Transport operators have therefore evaluated alternatives such as hydrogen fuel cell buses. [2] Hydrogen fuel cells generate electricity by reacting hydrogen and oxygen in the presence of a catalyst, the by-product of which is water. This electricity is used as a power source for an electric motor, which drives the wheels of the bus. [4] Some companies have proposed using the fuel cell as a range extender, combining it with a larger battery or a supercapacitor. [5] Hydrogen has a higher energy density than lithium batteries, making it suitable for heavy vehicles such as buses and trucks. [6]
The provenance of hydrogen fuel varies – with green hydrogen (produced using renewable electricity) being significantly more environmentally friendly than brown hydrogen (produced by burning coal or lignite) or grey hydrogen (produced by steam heating natural gas). [6] [7] [8]
From the late 1980s, concern regarding diesel emissions from buses led to experimentation regarding the use of fuel cells to power vehicles. Initial proof of concept work involved demonstrating that fuel cells could be packaged into a bus, and successfully power one. [9] Between 1994 and 1995, the Georgetown Fuel Cell Bus Program (led by Georgetown University and the United States Department of Energy) demonstrated three 30 feet (9.1 m) buses powered by a phosphoric acid fuel cell from Fuji Electric. [10] [11]
From the late 1990s, hydrogen-powered fuel-cell buses were trialled and experimented in a variety of cities. [9] In 1998, Chicago and Vancouver began trials, using New Flyer Industries bus bodies and Ballard Power Systems hydrogen fuel cells. [12] The three-year trial carried more than 200,000 passengers and travelled over 118,000 kilometers (73,000 mi).
From 2000, Hino and Toyota collaborated on the development of FCHV-BUS, a hydrogen fuel cell bus. [13] After initial trials by Toei Bus in 2003, a fleet of 8 FCHV-BUS buses were then used at Expo 2005 in Aichi, Japan. [14] During the Expo, they carried one million visitors and travelled about 130,000 kilometres. The buses were subsequently used as airport shuttle buses.
In the United States, the National Renewable Energy Laboratory (NERL) in the United States has been undertaking research work on hydrogen fuel cell buses since 2000, in collaboration with the Federal Transit Administration. [9] [15] AC Transit in the San Francisco Bay Area began trials of a hydrogen fuel cell bus in 2002. [16]
From 2001, the European Union supported research project Clean Urban Transport for Europe (CUTE) began running hydrogen fuel cell powered buses in nine European cities, including London, Madrid and Hamburg. [17] The project was supported by a consortium of transportation operators, hydrogen infrastructure and fuel cell developers, universities and city authorities. [18] Three other cities – Reykjavík, Beijing and Perth – took part in similar demonstration projects, supported by the same consortium. [19] The Fuel Cell Bus Club became a forum to share experiences and information between cities and researchers. [20]
All three projects used Mercedes-Benz Citaro buses, with hydrogen fuel cells from Ballard Power Systems. At the time they claimed to be the largest fleet of fuel cell buses in the world. The buses were estimated to cost US$1.2 million each and had a range of 300 kilometres (200 mi) and carried around 70 passengers. [21]
Completed in 2007, the projects were deemed a success by researchers. [22] [23] However, the buses were criticised by some operators for their high cost of operation, with Madrid reporting that they were around ten times as costly to fuel. [24] Dedicated hydrogen filling stations were also required to be built. [24] The buses in Beijing – the first fuel cell buses in China – were withdrawn after one year, as air pollution reduced the efficiency and operating life of the fuel cells. [25] [26]
In 2006, the Federal Transit Administration announced the National Fuel Cell Bus Technology Development Program. [27] $49 million in federal grants would be provided to transit agencies to help develop and test hydrogen fuel cell buses, to improve the potential commercialisation of them. [27] [28] In 2003, AC Transit introduced a Thor “ThunderPower” bus into trial service, with tests complete by October 2004. [29] In 2006, five Van Hool buses powered by UTC Power fuel cells entered service. These were replaced in 2010 by other Van Hool hydrogen fuel cell buses. [29]
In 2009, BC Transit began operating fuel-cell buses in the town of Whistler in British Columbia, prior to the 2010 Winter Olympics. The fleet of 20 hydrogen fuel cell buses was the largest in the world at the time, with the project costing around $94 million. [30] [31] Unlike previous projects, the hydrogen used was blue hydrogen, produced by Air Liquide in Quebec using hydroelectricity. [32] Due to high operating costs, the program halted in 2015. [33] [31]
The first Brazilian hydrogen fuel cell bus prototype began operation in São Paulo in 2009. The hydrogen bus was manufactured in Caxias do Sul. The programme, called "Ônibus Brasileiro a Hidrogênio" (Brazilian Hydrogen Autobus), includes three additional buses. [34]
In 2010, eight hydrogen buses were introduced into service in London, with a substantially larger range than the fuel cell buses used in the mid-2000s. [35] [36] At the time, this was the largest hydrogen bus fleet in Europe. [37] Transport for London acknowledged the high cost of the buses and the high cost in fuelling them, but noted that they "[expected] the costs to drop dramatically" as they become commercially viable. [35]
In China, hydrogen fuel cell buses were used at Beijing 2008, Expo 2010 in Shanghai and the 2010 Asian Games in Guangzhou. [28] These buses were developed by Higer Bus, with 3 deployed at Beijing 2008 and 196 at Expo 2010 in Shanghai. [38] [39]
In March 2015, Europe's largest fleet of hydrogen fuel cell buses entered service in Aberdeen, Scotland. 10 Van Hool buses were used on a five-year trial. [40]
As of 2020, 5,648 hydrogen fuel cell buses are in use around the world, with 93.7% of them in China. Some early adopters of fuel cell buses have opted to focus on battery electric buses, with London having 950 battery electric buses, and 20 hydrogen fuel cell buses in their fleet as of 2023. [41]
In 2015, Toyota began testing their updated hydrogen fuel cell bus in Tokyo, the Toyota FC Bus. Developed in conjunction with Hino Motors, it utilised technology from the Toyota Mirai hydrogen fuel cell car, as well as from Hino's hybrid buses. In 2017, Toyota unveiled the Toyota Sora bus, [42] with production beginning in March 2018. [43] [44] By 2020, over 100 Toyota Sora buses had been delivered, operating on the Tokyo BRT, JR Bus Kanto and Toei Bus. [45]
In 2018, Toyota announced that they would be supplying their hydrogen fuel cell technology to Portuguese bus manufacturer Caetano, for buses to be sold in Europe. [46] The Caetano H2.City Gold has achieved numerous sales, such in Bielefeld, [47] Cottbus, [48] and Barcelona. [49] Caetano has subsequently begun to brand the bus as a "Toyota", after Toyota became a majority shareholder. [50]
In China, the Feichi (Allenbus) company began manufacturing hydrogen fuel cell buses in Yunfu after licensing the fuel cell technology from Ballard. The hydrogen fuel cell is combined with a 36kWh Lithium-ion battery, which powers the electric motors. Over 300 Feichi buses are now in service in the city of Foshan in Guangdong province in China. [51] Other manufacturers in China also began to produce hydrogen fuel cell buses. Zhongtong Bus began a research and development programme in 2014, and began producing buses in 2016. [52]
In 2018, Zhangjiakou ordered 74 hydrogen fuel cell buses in preparation for the Beijing 2022 Winter Olympics. [53] During the Games, over 800 hydrogen fuel cell buses and coaches were used from manufacturers Foton, Yutong, Geely and Zhongtong Bus. [54] [55] [56] Hydrogen fuel cell vehicles were chosen over battery electric vehicles due to the cold weather prevalent in Hebei Province. [54] The substantial use of hydrogen was criticised, given that much of China's hydrogen is "black hydrogen", produced by burning coal. [57] This meant that each kilo of hydrogen produced around 15–20 kg of CO2. [57]
Launched in 2017, the Hyundai ElecCity entered commercial service in South Korea in December 2019. By June 2021, 108 buses were in service across South Korea. [58] Trial operations of the ElecCity with Wiener Linien in Vienna, Austria were planned from November 2021, [59] with further tests in Germany also announced. [60] The ElecCity has a range of over 500 kilometres (310 mi), and a maximum output of 180 kW. [58] The cities of Busan and Ulsan announced in 2022 that they planned to introduce over 620 buses by 2025. [61]
In 2019, Polish bus manufacturer Solaris Bus & Coach announced a hydrogen fuel cell bus on their popular Urbino 12 platform. This was subsequently tested by a range of major operators including RATP in Paris, [62] and ordered by European bus operators including Connexxion, [63] ÖBB Postbus, [64] and MPK Poznań. [65] In 2022, Solaris announced a hydrogen fuel cell version of their Urbino 18 articulated bus at InnoTrans 2022. [66]
In 2020, the city of Nanning in China announced they planned to replace their entire 7,000 battery electric bus fleet with better performing hydrogen fuel cell/battery hybrid buses. [67]
As of 2020 [update] , the NERL was continuing work to evaluate fuel cell bus projects in the U.S., with 64 buses in service in California, Hawaii and Ohio. [68] AC Transit has the largest fleet of hydrogen fuel cell buses in the United States, with 22 buses in service from Van Hool and New Flyer. [68] This will allow a direct comparison between battery electric and hydrogen fuel cell buses, to guide future purchasing decisions in light of a desire for a zero emission bus fleet. [69] AC Transit noted that they had the "most comprehensive zero-emission bus (ZEB) program in the United States", and had run 3,200,000 miles (5,100,000 km) of service with zero emission buses since 2000. [69]
In June 2021, the world's first hydrogen fuel cell double-decker bus (Wright StreetDeck Hydroliner) entered service with Metroline in London on route 7. [70] [4] These buses also entered service in Aberdeen, Scotland. [71] The Hydroliner FCEV was developed as part of the European Union 'Joint Initiative for Hydrogen Vehicles across Europe' (JIVE). [72]
Other bus manufacturers continued to enter the hydrogen fuel cell market, with Iveco announcing a memorandum of understanding with Air Liquide to develop 'hydrogen mobility', [73] and Alexander Dennis announcing a 'next generation' double decker bus. [74] New manufacturers also planned to enter the market, such as Hyzon Motors. [75] Other countries continued to investigate the potential of hydrogen fuel cell buses, with Moscow announcing a pilot of Kamaz buses in 2022. [76]
In May 2022, Regionalverkehr Köln , the public transport operator for Cologne, Germany ordered up to 100 hydrogen fuel cell buses from Solaris and Wrightbus. [77] This followed the announcement of the 'National Hydrogen Strategy' in Germany, which made clear that hydrogen fuel cell buses were a feasible alternative for long-distance routes. [78] Mercedes-Benz announced that their popular eCitaro bus would be made available with a range extender using a Toyota hydrogen fuel cell. This would increase the range of the bus to 400 kilometres (250 mi). [79] [80]
In July 2022, Île-de-France Mobilités (IDFM) ordered 47 fuel cell buses for the Grand Paris region in France at a cost of €48m. Green hydrogen will be used, with the hydrogen produced at an incinerator in Creteil. [81] The managing director of IDFM stated that they wished to send a signal with their first order that bus manufacturers should "improve the technology, bring it to maturity, produce it [commercially] and we will be there". [82]
In July 2022, over five hundred Foton AUV buses joined the Beijing Public Transport Group. Media reported that the buses have a range of around 600 km, and can be refilled in around 10 to 15 minutes. [83] These buses had previously been used at the Beijing 2022 Winter Olympics. [83]
In August 2022, India's first domestically developed hydrogen fuel bus was unveiled in Pune. The bus was developed by KPIT Technologies and the Council of Scientific and Industrial Research. [84] [85]
In 2022, New York City's MTA announced that they would trial hydrogen fuel cell buses, funded by a grant from New York State Energy Research and Development Authority. [86] The first two buses (New Flyer Xcelsior CHARGE H2) will be launched in The Bronx by late 2024. [87] The MTA announced that its entire bus fleet will be zero-emission by 2040. [88]
In 2023, issues regarding the cost of hydrogen compared to electricity led to several transit agencies cancelling their orders. [89] [90] However other agencies continued to order fuel cell buses – with TPER in Bologna ordering 130 buses from Solaris, [91] [92] Seoul ordering 1,300 buses from Hyundai [93] and SamTrans ordering 108 buses from New Flyer. [94] In October 2023, Santa Cruz Metro in Santa Cruz, California ordered 57 fuel cell buses at a cost of $87 million, after tests showed that fully loaded battery electric buses were not suited to the hilly roads of the area. [95] [96]
A 2023 research paper estimated that just 4% of zero emission vehicles will be hydrogen fuel cell powered by 2044, with a "low penetration of fuel cell city buses" located only in countries with hydrogen infrastructure and on bus routes where it is unfeasible for battery electric buses to operate. The paper also noted potential for intercity coaches and buses to be powered by hydrogen fuel cells. [97] [98] Other reports indicated growth in fuel cell buses, with Solaris indicating that they had over 500 buses on order, with a 44% market share for fuel cell buses in Europe. [99] [100]
In January 2024, Barcelona's TMB ordered 38 hydrogen fuel cell buses from Solaris at a cost of €23.4 million, with green hydrogen produced by Iberdrola in the Zona Franca area of the city. [101] In April 2024, US manufacturer Gillig announced that they would introduce a hydrogen fuel cell bus by 2026, with a powertrain from BAE Systems and fuel cells from Ballard Power Systems. [102]
Buses powered by hydrogen fuel cells have some similarities with battery electric buses, as well as key differences.
Both types are zero-emission at the tailpipe, with hydrogen fuel cell buses producing water. However many sources of hydrogen, including those most commonly used, are not zero-emission. [7] [8] Both are propelled by electric motors, and both have been produced by a range of bus manufacturers. [103] Both have upfront costs – such as electric chargers, or a hydrogen fuelling station. [103]
Unlike battery electric buses, hydrogen fuel cell buses can be refuelled in around 10 minutes, compared to an overnight charge for electric buses (or an energy intensive, high current fast charge of a battery). [90] [104] Hydrogen fuel cell buses have a greater range and longer run time than battery electric buses, with a range of around 450 kilometres (280 mi) before refuelling [104] [105] – compared to around 250 kilometres (160 mi) between charges for a battery electric bus. [106] [105] Hydrogen also has a higher energy storage density than batteries. [103] Furthermore, as batteries are made larger to increase range – they become heavier, decreasing energy efficiency. [103] Hydrogen fuel cell buses therefore weigh less than battery electric buses – up to 11,000 pounds (5,000 kg) lighter. [104]
Hydrogen fuel cell buses are less affected by temperature, with consistent power and range at extreme hot or cold temperatures. [3] [103] Operators of battery electric buses have reported shorter range in low temperatures, [106] with Berliner Verkehrsbetriebe (BVG) reporting a 30% shorter range in cold weather (around −10 °C (14 °F)). [107]
Battery electric buses are more efficient than hydrogen fuel cell buses on an energy basis, owing to the relative inefficiency of a hydrogen fuel cell compared to a battery. [108]
The cost of fuelling Hydrogen buses is higher than battery buses. [6] [108] Costs of both battery electric buses and hydrogen fuel cell buses has fallen over time. [68]
Some manufacturers have used hydrogen fuel cells as a range extender for battery electric buses, allowing them to have greater range. [5] For example, the Mercedes-Benz eCitaro has a range of 280 kilometres (170 mi) as a battery electric model, with the eCitaro fuel cell bus having a range of 400 kilometres (250 mi) thanks to a 60 kW Toyota fuel cell that recharges the battery. [109]
As of 2023 [update] , research shows that hydrogen fuel cell buses are more expensive to operate than battery electric buses, owing to the higher cost of the vehicles and the hydrogen fuel used, as well as the inefficiency of using a hydrogen fuel cell compared to a battery. [110]
The cost of fuelling buses has varied substantially, due to the cost and availability of hydrogen. Some transit operators have been able to use hydrogen by-product from industrial processes (such as the production of Polyvinyl chloride) to lower the cost. [111] Other transit operators have built small scale plants to produce hydrogen from natural gas (brown hydrogen), [112] or have purchased it directly from industrial producers. [35] Campaigners have criticised the use of brown hydrogen to power the buses, in light of the carbon footprint created by the industrial process. [6] [7] Green hydrogen – hydrogen produced using renewable energy – is generally considered to be too expensive. [7] [103]
In 2006, the National Renewable Energy Laboratory stated that the cost of hydrogen fuel was around $9 a kilogram, roughly comparing it to $2 a gallon for diesel. It further noted that the total cost per mile (including maintenance) was around $1 per mile for diesel and around $6.50 per mile for hydrogen. [113] In Europe, the Clean Urban Transport for Europe (CUTE) project in the early 2000s reported fuelling costs around 10 times more than diesel. [24]
In 2021, Tokyu Bus reported that the cost of fuelling a hydrogen fuel cell bus is around 2.6 times higher than an equivalent diesel bus, with brown hydrogen predominately used in Japan. [6] In January 2022, the city of Montpellier, France, cancelled a contract to procure 51 buses powered by hydrogen fuel cells, when it found that the cost of operation was 6 times more expensive than electric buses. [114] [115] [108] The city ordered battery electric buses instead. [115]
In 2021, Wuppertaler Stadtwerke reported that their hydrogen fuel cell buses cost around the same as their diesel buses to operate. [116] London reported that the cost of hydrogen was around £6 per kilogram in 2023, roughly comparable with the cost of diesel fuel. [117] Santa Cruz noted in 2023 that hydrogen cost around $9 to $13 a gallon (compared to around $6 a gallon for diesel fuel), however they noted that fuel cell buses get "more than twice as much mileage out of a gallon-equivalent of hydrogen as a gallon of diesel", making direct comparisons between the two fuels challenging. [118]
Projections from the Hydrogen Council are that hydrogen produced from renewable energy at scale could cost around $1.4 to $2.3 per kilogram. [1]
Costs of fuel cell buses has gradually fallen as technology has become more widespread and commercially viable. [68] [110]
In 2007, the National Renewable Energy Laboratory stated that the purchase price of a hydrogen fuel cell bus was around $2–3m, a standard diesel bus was around $330,000 and a hybrid bus was around $480,000. [119] [120] Regionalverkehr Köln in Cologne, Germany reported that the Phileas bus cost them €1.86 million to purchase in 2011, a Van Hool A330 cost around €850,000 to purchase in 2014 and €590,000 to purchase in 2020, and that prices had fallen further – with new hydrogen fuel cell buses costing around €500,000 in 2023. [111]
In 2022, the Financial Times reported that the Japanese Toyota FC Sora cost ¥100 million (€710,000) for a six-year lease, whereas a diesel bus costs around ¥24 million (€170,000). [6] Local authorities have subsidised the cost of the buses to get them into service. [6] In South Korea, the government subsidises the purchase of ₩700 million (€470,000) Hyundai ElecCity buses by ₩300 million (€200,000), protecting domestic industry from Chinese built battery electric buses. [121]
In the United States, it was reported in 2022 that a hydrogen bus cost around $1.2 million to purchase, compared to $750,000 for a battery electric bus. [106] The Globe and Mail noted that European produced fuel cell buses are cheaper as they are produced in larger quantities. [31]
Research groups such as H2Bus Consortium are working to lower the cost of hydrogen fuel cell buses to the level of diesel buses, with volume orders and mass production allowing manufacturers to take advantage of economies of scale. [122]
When compared to diesel buses, transit operators face additional upfront costs when moving to hydrogen fuel cell buses. This includes constructing hydrogen fuelling stations, as well as purchasing spare parts for new buses. [6] Battery electric buses have similar upfront costs, requiring the installation of electric chargers and upgrades to the electrical grid to handle large numbers of electric buses being charged (often overnight). [103]
As of 2020 [update] , 5,648 hydrogen fuel cell buses are in use around the world, with 93.7% of them in China. [1]
A wide variety of companies are currently producing hydrogen fuel cell buses. Bus manufacturers usually work with a provider of hydrogen fuel cells to power the bus, such as Ballard Power Systems or Toyota. [3] [123]
Vehicles include, but are not limited to:
A fuel cell is an electrochemical cell that converts the chemical energy of a fuel and an oxidizing agent into electricity through a pair of redox reactions. Fuel cells are different from most batteries in requiring a continuous source of fuel and oxygen to sustain the chemical reaction, whereas in a battery the chemical energy usually comes from substances that are already present in the battery. Fuel cells can produce electricity continuously for as long as fuel and oxygen are supplied.
A hydrogen vehicle is a vehicle that uses hydrogen to move. Hydrogen vehicles include some road vehicles, rail vehicles, space rockets, forklifts, ships and aircraft. Motive power is generated by converting the chemical energy of hydrogen to mechanical energy, either by reacting hydrogen with oxygen in a fuel cell to power electric motors or, less commonly, by hydrogen internal combustion.
An electric vehicle (EV) is a vehicle that uses one or more electric motors for propulsion. The vehicle can be powered by a collector system, with electricity from extravehicular sources, or can be powered autonomously by a battery or by converting fuel to electricity using a generator or fuel cells. EVs include road and rail vehicles, electric boats and underwater vessels, electric aircraft and electric spacecraft.
The hydrogen economy is an umbrella term for the roles hydrogen can play alongside low-carbon electricity to reduce emissions of greenhouse gases. The aim is to reduce emissions where cheaper and more energy-efficient clean solutions are not available. In this context, hydrogen economy encompasses the production of hydrogen and the use of hydrogen in ways that contribute to phasing-out fossil fuels and limiting climate change.
The Fuel Cell Bus Club comprised the participants of three demonstration projects for fuel cell buses in nine European cities and two other worldwide cities between 2001 and 2007. The Fuel Cell Bus Club became a forum to share experiences and information between cities and researchers. Other cities such as Beijing also tested buses from the consortium behind the project.
The Mercedes-Benz Citaro is a single-decker, rigid or articulated bus manufactured by Mercedes-Benz/EvoBus. Introduced in 1997, the Citaro is available in a range of configurations, and is in widespread use throughout Europe and parts of Asia, with more than 55,000 produced by December 2019.
A fuel cell vehicle (FCV) or fuel cell electric vehicle (FCEV) is an electric vehicle that uses a fuel cell, sometimes in combination with a small battery or supercapacitor, to power its onboard electric motor. Fuel cells in vehicles generate electricity generally using oxygen from the air and compressed hydrogen. Most fuel cell vehicles are classified as zero-emissions vehicles. As compared with internal combustion vehicles, hydrogen vehicles centralize pollutants at the site of the hydrogen production, where hydrogen is typically derived from reformed natural gas. Transporting and storing hydrogen may also create pollutants. Fuel cells have been used in various kinds of vehicles including forklifts, especially in indoor applications where their clean emissions are important to air quality, and in space applications. Fuel cells are being developed and tested in trucks, buses, boats, ships, motorcycles and bicycles, among other kinds of vehicles.
Vehicle-to-grid (V2G) describes a system in which plug-in electric vehicles (PEVs) sell demand response services to the grid. Demand services are either delivering electricity to the grid or reducing the rate of charge from the grid. Demand services reduce the peaks in demand for grid supply, and hence reduce the probability of disruption from load variations. Vehicle-to-load (V2L) and Vehicle-to-vehicle (V2V) are related, but the AC phase is not synchronised with the grid, so the power is only available to "off-grid" load.
An electric bus is a bus that is propelled using electric motors, as opposed to a conventional internal combustion engine. Electric buses can store the needed electrical energy on board, or be fed mains electricity continuously from an external source such as overhead lines. The majority of buses using on-board energy storage are battery electric buses, where the electric motor obtains energy from an onboard battery pack, although examples of other storage modes do exist, such as the gyrobus that uses flywheel energy storage. When electricity is not stored on board, it is supplied by contact with outside power supplies, for example, via a current collector, or with a ground-level power supply, or through inductive charging.
A hybrid electric bus is a bus that combines a conventional internal combustion engine propulsion system with an electric propulsion system. These type of buses normally use a Diesel–electric powertrain and are also known as hybrid Diesel–electric buses.
The California Fuel Cell Partnership (CaFCP) is a public-private partnership to promote hydrogen vehicles (including cars and buses) in California. It is notable as one of the first initiatives for that purpose undertaken in the United States. The challenge is which come first, hydrogen cars or filling stations.
An alternative fuel vehicle is a motor vehicle that runs on alternative fuel rather than traditional petroleum fuels. The term also refers to any technology powering an engine that does not solely involve petroleum. Because of a combination of factors, such as environmental and health concerns including climate change and air pollution, high oil-prices and the potential for peak oil, development of cleaner alternative fuels and advanced power systems for vehicles has become a high priority for many governments and vehicle manufacturers around the world.
A battery electric bus is an electric bus that is driven by an electric motor and obtains energy from on-board batteries. Many trolleybuses use batteries as an auxiliary or emergency power source.
There are 3,826 hybrid buses, 1,397 battery electric buses, and 20 hydrogen fuel cell buses operating in London, as of March 2024, out of a total bus fleet of 8,776 – this is around 60% of the bus fleet.
The New Flyer Low Floor is a line of low-floor transit buses that was manufactured by New Flyer Industries between 1991 and 2014. It was available in 30-foot rigid, 35-foot rigid, 40-foot rigid, and 60-foot articulated lengths. In addition to the different available lengths, the buses were sold with a variety of prime movers, ranging from conventional diesel and CNG combustion engines to diesel-electric hybrid, gasoline hybrid, and hydrogen fuel cell.
The FV-E991 series (FV-E991系), nicknamed HYBARI, is a hydrogen fuel cell electric multiple unit (EMU) train type operated by East Japan Railway Company from 2022.
The Proterra EcoRide BE35 is a 35 foot (11 m) fast-charge battery electric bus that seats 38 with a total passenger capacity of 60 in its composite low floor body. Foothill Transit was the first transit agency to operate the buses in revenue service, starting in September 2010. It is the first 30 ft (9 m) or larger, heavy-duty all-electric bus ever to complete federally required durability, reliability and safety testing at the Bus Research and Testing Center in Altoona, Pennsylvania. The 12yr/500,000 mi (800,000 km) STURAA test was completed on March 5, 2012.
The ENC Axess is a line of low-floor transit buses available in 35-foot and 40-foot nominal lengths manufactured by ENC in Riverside, California starting from 2003. In addition to the different available lengths, the buses are sold with a variety of prime movers, ranging from conventional diesel, LNG/CNG combustion engines, diesel-electric hybrid and hydrogen fuel cell with a traction motor.
hydrogen is considered "brown hydrogen" because of the carbon footprint left by producing the fuel, which is made almost entirely by natural gas. Green hydrogen, which is hydrogen fuel produced and delivered with zero emissions, remains cost-prohibitive.
hydrogen's "dirty secret" is that it comes primarily from fossil fuels.
Our first hydrogen fueling facility was opened in November of 2002 at our Richmond Division to operate a single 30-foot fuel cell electric bus.
Back in 2008 Beijing Olympic Games, only 3 units hydrogen fuel cell buses were put into operation. The figure jumped to 196 units in 2010 World Expo held in Shanghai.
The MTA says they have committed to a zero-emission bus fleet by 2040.
But when the Santa Cruz Metropolitan Transport District (Santa Cruz Metro) test-drove one of the "best electric buses money could buy for our needs" — weighing it down with sandbags to replicate the weight of its full passenger capacity — it had problems navigating the steep hills outside the coastal city.
{{cite book}}: CS1 maint: date and year (link)Hydrogen buses have a longer range, about 300 to 350 miles per refueling, versus 175 to 200 miles per charge for an electric battery. Since hydrogen buses need to refuel only by filling their tanks up with hydrogen gas, they take about 15 minutes to fuel; battery electric buses can take several hours to recharge. And since hydrogen buses have only a hydrogen tank and a fuel cell, they can be as much as 11,000 pounds lighter than a bus lined with heavy electric batteries, making their travels less taxing on roads and bridges.
Range Seoul mode simultation
La technologie hydrogène est prometteuse, confirmait Michaël Delafosse le 4 janvier. Mais nous étions aidés sur l'investissement mais pas sur le fonctionnement. Or, il reviendrait six fois plus cher qu'avec des bus électriques.[Hydrogen technology is promising," confirmed Michaël Delafosse on January 4. But we were helped on the investment but not on the operation. However, it would be six times more expensive than with electric buses.]
Tree told me that Metro, in the early stages, would be looking at about $9 to $13 per gallon equivalent of compressed hydrogen fuel. In California, diesel rose to an average price of about $6.43 per gallon as of Sept. 28. Tree was quick to note, however, that hydrogen fuel cell vehicles get more than twice as much mileage out of a gallon-equivalent of hydrogen as a gallon of diesel, evening out the overall cost per mile.
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