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Hydrogen economy

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Hydrogen has the most potential to reduce greenhouse gas emissions when used in chemical production, refineries, international shipping, and steelmaking[1]

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.[2] 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.

Hydrogen can be produced by several means. Most hydrogen produced today is gray hydrogen, made from natural gas through steam methane reforming (SMR). This process accounted for 1.8% of global greenhouse gas emissions in 2021.[3] Low-carbon hydrogen, which is made using SMR with carbon capture and storage (blue hydrogen), or through electrolysis of water using renewable power (green hydrogen), accounted for less than 1% of production.[4] Virtually all of the 100 million tonnes[5] of hydrogen produced each year is used in oil refining (43% in 2021) and industry (57%), principally in the manufacture of ammonia for fertilizers, and methanol.[6]: 18, 22, 29 

To limit global warming, it is generally envisaged that the future hydrogen economy replaces gray hydrogen with low-carbon hydrogen. As of 2024 it is unclear when enough low-carbon hydrogen could be produced to phase-out all the gray hydrogen.[7] The future end-uses are likely in heavy industry (e.g. high-temperature processes alongside electricity, feedstock for production of green ammonia and organic chemicals, as alternative to coal-derived coke for steelmaking), long-haul transport (e.g. shipping, and to a lesser extent hydrogen-powered aircraft and heavy goods vehicles), and long-term energy storage.[8][9] Other applications, such as light duty vehicles and heating in buildings, are no longer part of the future hydrogen economy, primarily for economic and environmental reasons.[10][11] Hydrogen is challenging to store, to transport in pipelines, and to use. It presents safety concerns since it is highly explosive, and it is inefficient compared to direct use of electricity. Since relatively small amounts of low-carbon hydrogen are available, climate benefits can be maximized by using it in harder-to-decarbonize applications.[11]

As of 2023 there are no real alternatives to hydrogen for several chemical processes in which it is currently used, such as ammonia production for fertilizer.[12] The cost of low- and zero-carbon hydrogen is likely to influence the degree to which it will be used in chemical feedstocks, long haul aviation and shipping, and long-term energy storage. Production costs of low- and zero-carbon hydrogen are evolving. Future costs may be influenced by carbon taxes, the geography and geopolitics of energy, energy prices, technology choices, and their raw material requirements. It is likely that green hydrogen will see the greatest reductions in production cost over time.[13] The U.S. Department of Energy's Hydrogen Hotshot Initiative seeks to reduce the cost of green hydrogen drop to $1 a kilogram during the 2030s. [14]

History and objectives

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Origins

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The concept of a society that uses hydrogen as the primary means of energy storage was theorized by geneticist J. B. S. Haldane in 1923. Anticipating the exhaustion of Britain's coal reserves for power generation, Haldane proposed a network of wind turbines to produce hydrogen and oxygen for long-term energy storage through electrolysis, to help address renewable power's variable output.[15] The term "hydrogen economy" itself was coined by John Bockris during a talk he gave in 1970 at General Motors (GM) Technical Center.[16] Bockris viewed it as an economy in which hydrogen, underpinned by nuclear and solar power, would help address growing concern about fossil fuel depletion and environmental pollution, by serving as energy carrier for end-uses in which electrification was not suitable.[2][17]

A hydrogen economy was proposed by the University of Michigan to solve some of the negative effects of using hydrocarbon fuels where the carbon is released to the atmosphere (as carbon dioxide, carbon monoxide, unburnt hydrocarbons, etc.). Modern interest in the hydrogen economy can generally be traced to a 1970 technical report by Lawrence W. Jones of the University of Michigan,[18] in which he echoed Bockris' dual rationale of addressing energy security and environmental challenges. Unlike Haldane and Bockris, Jones only focused on nuclear power as the energy source for electrolysis, and principally on the use of hydrogen in transport, where he regarded aviation and heavy goods transport as the top priorities.[19]

Later evolution

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Technology leadership opportunities in green hydrogen value chains according to the International Renewable Energy Agency in 2022[20]: 55 

A spike in attention for the hydrogen economy concept during the 2000s was repeatedly described as hype by some critics and proponents of alternative technologies,[21][22][23] and investors lost money in the bubble.[24] Interest in the energy carrier resurged in the 2010s, notably with the forming of the World Hydrogen Council in 2017. Several manufacturers released hydrogen fuel cell cars commercially, with manufacturers such as Toyota, Hyundai, and industry groups in China having planned to increase numbers of the cars into the hundreds of thousands over the next decade.[25][26]

The global scope for hydrogen's role in cars is shrinking relative to earlier expectations.[27][28] By the end of 2022, 70,200 hydrogen vehicles had been sold worldwide,[29] compared with 26 million plug-in electric vehicles.[30]

Early 2020s takes on the hydrogen economy share earlier perspectives' emphasis on the complementarity of electricity and hydrogen, and the use of electrolysis as the mainstay of hydrogen production.[8] They focus on the need to limit global warming to 1.5 °C and prioritize the production, transportation and use of green hydrogen for heavy industry (e.g. high-temperature processes alongside electricity,[31] feedstock for production of green ammonia and organic chemicals,[8] as alternative to coal-derived coke for steelmaking),[32] long-haul transport (e.g. shipping, aviation and to a lesser extent heavy goods vehicles), and long-term energy storage.[8][9]

Current hydrogen market

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Hydrogen production globally was valued at over US$155 billion in 2022 and is expected to grow over 9% annually through 2030.[33]

In 2021, 94 million tonnes (Mt) of molecular hydrogen (H2) was produced.[34] Of this total, approximately one sixth was as a by-product of petrochemical industry processes.[4] Most hydrogen comes from dedicated production facilities, over 99% of which is from fossil fuels, mainly via steam reforming of natural gas (70%) and coal gasification (30%, almost all of which in China).[4] Less than 1% of dedicated hydrogen production is low carbon: steam fossil fuel reforming with carbon capture and storage, green hydrogen produced using electrolysis, and hydrogen produced from biomass.[4] CO2 emissions from 2021 production, at 915 MtCO2,[35] amounted to 2.5% of energy-related CO2 emissions[36] and 1.8% of global greenhouse gas emissions.[3]

Virtually all hydrogen produced for the current market is used in oil refining (40 MtH2 in 2021) and industry (54 MtH2).[6]: 18, 22  In oil refining, hydrogen is used, in a process known as hydrocracking, to convert heavy petroleum sources into lighter fractions suitable for use as fuels. Industrial uses mainly comprise ammonia production to make fertilizers (34 MtH2 in 2021), methanol production (15 MtH2) and the manufacture of direct reduced iron (5 MtH2).[6]: 29 

Production

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This section is an excerpt from Hydrogen production.[edit]

Hydrogen gas is produced by several industrial methods.[37] Nearly all of the world's current supply of hydrogen is created from fossil fuels.[38][39]: 1  Most hydrogen is gray hydrogen made through steam methane reforming. In this process, hydrogen is produced from a chemical reaction between steam and methane, the main component of natural gas. Producing one tonne of hydrogen through this process emits 6.6–9.3 tonnes of carbon dioxide.[40] When carbon capture and storage is used to remove a large fraction of these emissions, the product is known as blue hydrogen.[41]

Green hydrogen is usually understood to be produced from renewable electricity via electrolysis of water.[42][43] Less frequently, definitions of green hydrogen include hydrogen produced from other low-emission sources such as biomass.[44] Producing green hydrogen is currently more expensive than producing gray hydrogen, and the efficiency of energy conversion is inherently low.[45] Other methods of hydrogen production include biomass gasification, methane pyrolysis, and extraction of underground hydrogen.[46][47]

As of 2023, less than 1% of dedicated hydrogen production is low-carbon, i.e. blue hydrogen, green hydrogen, and hydrogen produced from biomass.[48]

Green methanol

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See also: Methanol economy

Green methanol is a liquid fuel that is produced from combining carbon dioxide and hydrogen (CO2 + 3 H2 → CH3OH + H2O) under pressure and heat with catalysts. It is a way to reuse carbon capture for recycling. Methanol can store hydrogen economically at standard outdoor temperatures and pressures, compared to liquid hydrogen and ammonia that need to use a lot of energy to stay cold in their liquid state.[49] In 2023 the Laura Maersk was the first container ship to run on methanol fuel.[50] Ethanol plants in the midwest are a good place for pure carbon capture to combine with hydrogen to make green methanol, with abundant wind and nuclear energy in Iowa, Minnesota, and Illinois.[51][52] Mixing methanol with ethanol could make methanol a safer fuel to use because methanol doesn't have a visible flame in the daylight and doesn't emit smoke, and ethanol has a visible light yellow flame.[53][54][55] Green hydrogen production of 70% efficiency and a 70% efficiency of methanol production from that would be a 49% energy conversion efficiency.[56]

Uses

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Some projected uses in the medium term, but analysts disagree[57]
Hydrogen fuel requires the development of a specific infrastructure for processing, transport and storage.

Hydrogen can be deployed as a fuel in two distinct ways: in fuel cells which produce electricity, and via combustion to generate heat.[58] When hydrogen is consumed in fuel cells, the only emission at the point of use is water vapor.[58] Combustion of hydrogen can lead to the thermal formation of harmful nitrogen oxides emissions.[58]

Industry

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In the context of limiting global warming, low-carbon hydrogen (particularly green hydrogen) is likely to play an important role in decarbonizing industry.[59] Hydrogen fuel can produce the intense heat required for industrial production of steel, cement, glass, and chemicals, thus contributing to the decarbonization of industry alongside other technologies, such as electric arc furnaces for steelmaking.[31] However, it is likely to play a larger role in providing industrial feedstock for cleaner production of ammonia and organic chemicals.[59] For example, in steelmaking, hydrogen could function as a clean energy carrier and also as a low-carbon catalyst replacing coal-derived coke.[32]

The imperative to use low-carbon hydrogen to reduce greenhouse gas emissions has the potential to reshape the geography of industrial activities, as locations with appropriate hydrogen production potential in different regions will interact in new ways with logistics infrastructure, raw material availability, human and technological capital.[59]

Transport

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Main article: Hydrogen vehicle

Much of the interest in the hydrogen economy concept is focused on hydrogen vehicles, particularly planes.[60][61] Hydrogen vehicles produce significantly less local air pollution than conventional vehicles.[62] By 2050, the energy requirement for transportation might be between 20% and 30% fulfilled by hydrogen and synthetic fuels.[63][64][65]

Hydrogen used to decarbonize transportation is likely to find its largest applications in shipping, aviation and to a lesser extent heavy goods vehicles, through the use of hydrogen-derived synthetic fuels such as ammonia and methanol, and fuel cell technology.[8] Hydrogen has been used in fuel cell buses for many years. It is also used as a fuel for spacecraft propulsion.

In the International Energy Agency's 2022 Net Zero Emissions Scenario (NZE), hydrogen is forecast to account for 2% of rail energy demand in 2050, while 90% of rail travel is expected to be electrified by then (up from 45% today). Hydrogen's role in rail would likely be focused on lines that prove difficult or costly to electrify.[66] The NZE foresees hydrogen meeting approximately 30% of heavy truck energy demand in 2050, mainly for long-distance heavy freight (with battery electric power accounting for around 60%).[67]

Although hydrogen can be used in adapted internal combustion engines, fuel cells, being electrochemical, have an efficiency advantage over heat engines. Fuel cells are more expensive to produce than common internal combustion engines but also require higher purity hydrogen fuel than internal combustion engines.[68]

In the light road vehicle segment including passenger cars, by the end of 2022, 70,200 fuel cell electric vehicles had been sold worldwide,[29] compared with 26 million plug-in electric vehicles.[30] With the rapid rise of electric vehicles and associated battery technology and infrastructure, hydrogen's role in cars is minuscule.[27][28]

Energy system balancing and storage

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Green hydrogen, from electrolysis of water, has the potential to address the variability of renewable energy output. Producing green hydrogen can both reduce the need for renewable power curtailment during periods of high renewables output and be stored long-term to provide for power generation during periods of low output.[69][70]

Ammonia

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Main articles: ammonia and ammonia production
See also: alkaline fuel cell

An alternative to gaseous hydrogen as an energy carrier is to bond it with nitrogen from the air to produce ammonia, which can be easily liquefied, transported, and used (directly or indirectly) as a clean and renewable fuel.[71][72] Among disadvantages of ammonia as an energy carrier are its high toxicity, energy efficiency of NH3 production from N2 and H2, and poisoning of PEM Fuel Cells by traces of non-decomposed NH3 after NH3 to N2 conversion.

Buildings

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Numerous industry groups (gas networks, gas boiler manufacturers) across the natural gas supply chain are promoting hydrogen combustion boilers for space and water heating, and hydrogen appliances for cooking, to reduce energy-related CO2 emissions from residential and commercial buildings.[73][74][11] The proposition is that current end-users of piped natural gas can await the conversion of and supply of hydrogen to existing natural gas grids, and then swap heating and cooking appliances, and that there is no need for consumers to do anything now.[73][74][11]

A review of 32 studies on the question of hydrogen for heating buildings, independent of commercial interests, found that the economics and climate benefits of hydrogen for heating and cooking generally compare very poorly with the deployment of district heating networks, electrification of heating (principally through heat pumps) and cooking, the use of solar thermal, waste heat and the installation of energy efficiency measures to reduce energy demand for heat.[11] Due to inefficiencies in hydrogen production, using blue hydrogen to replace natural gas for heating could require three times as much methane, while using green hydrogen would need two to three times as much electricity as heat pumps.[11] Hybrid heat pumps, which combine the use of an electric heat pump with a hydrogen boiler, may play a role in residential heating in areas where upgrading networks to meet peak electrical demand would otherwise be costly.[11]

The widespread use of hydrogen for heating buildings would entail higher energy system costs, higher heating costs and higher environmental impacts than the alternatives, although a niche role may be appropriate in specific contexts and geographies.[11] If deployed, using hydrogen in buildings would drive up the cost of hydrogen for harder-to-decarbonize applications in industry and transport.[11]

Bio-SNG

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As of 2019 although technically possible production of syngas from hydrogen and carbon-dioxide from bio-energy with carbon capture and storage (BECCS) via the Sabatier reaction is limited by the amount of sustainable bioenergy available:[75] therefore any bio-SNG made may be reserved for production of aviation biofuel.[76]

Safety

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Main article: Hydrogen safety
A NASA engineer sweeps an area with a corn broom to find the location of a hydrogen fire. Hydrogen burns with a nearly-invisible flame.

Hydrogen poses a number of hazards to human safety, from potential detonations and fires when mixed with air to being an asphyxiant in its pure, oxygen-free form.[77] In addition, liquid hydrogen is a cryogen and presents dangers (such as frostbite) associated with very cold liquids.[78] Hydrogen dissolves in many metals and in addition to leaking out, may have adverse effects on them, such as hydrogen embrittlement,[79] leading to cracks and explosions.[80]

Hydrogen is flammable when mixed even in small amounts with ordinary air. Ignition can occur at a volumetric ratio of hydrogen to air as low as 4%.[81] Moreover, hydrogen fire, while being extremely hot, is almost invisible, and thus can lead to accidental burns.[82]

Hydrogen infrastructure

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This section is an excerpt from Hydrogen infrastructure.[edit]
Hydrogen pipelines

A hydrogen infrastructure is the infrastructure of hydrogen pipeline transport, points of hydrogen production and hydrogen stations for distribution as well as the sale of hydrogen fuel,[83] and thus a crucial prerequisite before a successful commercialization of fuel cell technology.[84]

Hydrogen gasification plant for Belinka Perkemija [sl], 2015

The hydrogen infrastructure would consist mainly of industrial hydrogen pipeline transport and hydrogen-equipped filling stations. Hydrogen stations which were not situated near a hydrogen pipeline would get supply via hydrogen tanks, compressed hydrogen tube trailers, liquid hydrogen trailers, liquid hydrogen tank trucks or dedicated onsite production.

Pipelines are the cheapest way to move hydrogen over long distances compared to other options. Hydrogen gas piping is routine in large oil-refineries, because hydrogen is used to hydrocrack fuels from crude oil. The IEA recommends existing industrial ports be used for production and existing natural gas pipelines for transport: also international co-operation and shipping.[85]

South Korea and Japan,[86] which as of 2019 lack international electrical interconnectors, are investing in the hydrogen economy.[87] In March 2020, the Fukushima Hydrogen Energy Research Field was opened in Japan, claiming to be the world's largest hydrogen production facility.[88] Much of the site is occupied by a solar array; power from the grid is also used for electrolysis of water to produce hydrogen fuel.[89]

Storage

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This section is an excerpt from Hydrogen storage.[edit]
Liquid hydrogen Tank at NASA Kennedy Space Center

Several methods exist for storing hydrogen. These include mechanical approaches such as using high pressures and low temperatures, or employing chemical compounds that release H2 upon demand. While large amounts of hydrogen are produced by various industries, it is mostly consumed at the site of production, notably for the synthesis of ammonia. For many years hydrogen has been stored as compressed gas or cryogenic liquid, and transported as such in cylinders, tubes, and cryogenic tanks for use in industry or as propellant in space programs. The overarching challenge is the very low boiling point of H2: it boils around 20.268 K (−252.882 °C or −423.188 °F). Achieving such low temperatures requires expending significant energy.

Although molecular hydrogen has very high energy density on a mass basis, partly because of its low molecular weight, as a gas at ambient conditions it has very low energy density by volume. If it is to be used as fuel stored on board a vehicle, pure hydrogen gas must be stored in an energy-dense form to provide sufficient driving range. Because hydrogen is the smallest molecule, it easily escapes from containers. Considering leakages, transport and production costs, hydrogen could have a Global Warming Potential over 100 years (GWP100) of 11.6.[90]

Power plants

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See also: Hydrogen fuel cell power station, Natural hydrogen, and Midcontinent Rift System

Xcel Energy is going to build two combined cycle power plants in the Midwest that can mix 30% hydrogen with the natural gas.[91] Intermountain Power Plant is being retrofitted to a natural gas/hydrogen power plant that can run on 30% hydrogen as well, and is scheduled to run on pure hydrogen by 2045.[92]

Costs

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More widespread use of hydrogen in economies entails the need for investment and costs in its production, storage, distribution and use. Estimates of hydrogen's cost are therefore complex and need to make assumptions about the cost of energy inputs (typically gas and electricity), production plant and method (e.g. green or blue hydrogen), technologies used (e.g. alkaline or proton exchange membrane electrolysers), storage and distribution methods, and how different cost elements might change over time.[93]: 49–65  These factors are incorporated into calculations of the levelized costs of hydrogen (LCOH). The following table shows a range of estimates of the levelized costs of gray, blue, and green hydrogen, expressed in terms of US$ per kg of H2 (where data provided in other currencies or units, the average exchange rate to US dollars in the given year are used, and 1 kg of H2 is assumed to have a calorific value of 33.3kWh).

Production method Note Current cost (2020–2022) Projected 2030 cost Projected 2050 cost
Gray hydrogen (not including a carbon tax)
International Energy Agency[94] 2022 costs estimated for June, when gas prices peaked in the wake of Russia's invasion of Ukraine 2021: 1.0–2.5 – –
2022: 4.8–7.8
PWC[95] 2021: 1.2–2.4
Blue hydrogen
International Energy Agency[94] 2022 costs estimated for June, when gas prices peaked in the wake of Russia's invasion of Ukraine 2021: 1.5–3.0 – –
2022: 5.3–8.6
UK government[96] Range dependent on gas price 2020: 1.6–2.7 1.6–2.7 1.6–2.8
GEP[97] 2022: 2.8–3.5 - -
Energy Transitions Commission[93]: 28  2020: 1.5–2.4 1.3–2.3 1.4–2.2
Green hydrogen
International Energy Agency[94] 2030 and 2050 estimates are using solar power in regions with good solar conditions 2021: 4.0–9.0 <1.5 <1.0
2022: 3.0-4.3
UK government[96] Using grid electricity, UK specific; range dependent on electricity price, and electrolyser technology and cost 2020: 4.9–7.9 4.4–6.6 4.0–6.3
Using otherwise curtailed renewable electricity, UK specific; range dependent on electrolyser technology and cost 2020: 2.4–7.9 1.7–5.6 1.5–4.6
IRENA[98] 2020: 2.2–5.2 1.4–4.1 1.1–3.4
GEP[97] Source notes green H2 production cost has fallen by 60% since 2010 2022: 3.0–6.0
Lazard[99] 2022: 2.8–5.3
PWC[95] 2021: 3.5–9.5 1.8–4.8 1.2–2.4
Energy Transitions Commission[93]: 28  2020: 2.6–3.6 1.0–1.7 0.7–1.2

The range of cost estimates for commercially available hydrogen production methods is broad, As of 2022, gray hydrogen is cheapest to produce without a tax on its CO2 emissions, followed by blue and green hydrogen. Blue hydrogen production costs are not anticipated to fall substantially by 2050,[96][93]: 28  can be expected to fluctuate with natural gas prices and could face carbon taxes for uncaptured emissions.[93]: 79  The cost of electrolysers fell by 60% from 2010 to 2022,[97] before rising slightly due to an increasing cost of capital.[24] Their cost is projected to fall significantly to 2030 and 2050,[100]: 26  driving down the cost of green hydrogen alongside the falling cost of renewable power generation.[101][93]: 28  It is cheapest to produce green hydrogen with surplus renewable power that would otherwise be curtailed, which favors electrolyzers capable of responding to low and variable power levels.[100]: 5 

A 2022 Goldman Sachs analysis anticipates that globally green hydrogen will achieve cost parity with grey hydrogen by 2030, earlier if a global carbon tax is placed on gray hydrogen.[13] In terms of cost per unit of energy, blue and gray hydrogen will always cost more than the fossil fuels used in its production, while green hydrogen will always cost more than the renewable electricity used to make it.

Subsidies for clean hydrogen production are much higher in the US and EU than in India.[102]

Examples and pilot programs

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A Mercedes-Benz O530 Citaro powered by hydrogen fuel cells, in Brno, Czech Republic.

The distribution of hydrogen for the purpose of transportation is being tested around the world, particularly in the US (California, Massachusetts), Canada, Japan, the EU (Portugal, Norway, Denmark, Germany), and Iceland.

An indicator of the presence of large natural gas infrastructures already in place in countries and in use by citizens is the number of natural gas vehicles present in the country. The countries with the largest amount of natural gas vehicles are (in order of magnitude):[103] Iran, China, Pakistan, Argentina, India, Brasil, Italy, Colombia, Thailand, Uzbekistan, Bolivia, Armenia, Bangladesh, Egypt, Peru, Ukraine, United States. Natural gas vehicles can also be converted to run on hydrogen.

Also, in a few private homes, fuel cell micro-CHP plants can be found, which can operate on hydrogen, or other fuels as natural gas or LPG.[104][105]

Australia

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Western Australia's Department of Planning and Infrastructure operated three Daimler Chrysler Citaro fuel cell buses as part of its Sustainable Transport Energy for Perth Fuel Cells Bus Trial in Perth.[106] The buses were operated by Path Transit on regular Transperth public bus routes. The trial began in September 2004 and concluded in September 2007. The buses' fuel cells used a proton exchange membrane system and were supplied with raw hydrogen from a BP refinery in Kwinana, south of Perth. The hydrogen was a byproduct of the refinery's industrial process. The buses were refueled at a station in the northern Perth suburb of Malaga.

In October 2021, Queensland Premier Annastacia Palaszczuk and Andrew Forrest announced that Queensland will be home to the world's largest hydrogen plant.[107]

In Australia, the Australian Renewable Energy Agency (ARENA) has invested $55 million in 28 hydrogen projects, from early stage research and development to early stage trials and deployments. The agency's stated goal is to produce hydrogen by electrolysis for $2 per kilogram, announced by Minister for Energy and Emissions Angus Taylor in a 2021 Low Emissions Technology Statement.[108]

European Union

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Countries in the EU which have a relatively large natural gas pipeline system already in place include Belgium, Germany, France, and the Netherlands.[109] In 2020, The EU launched its European Clean Hydrogen Alliance (ECHA).[110][111]

France

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Green hydrogen has become more common in France. A €150 million Green Hydrogen Plan was established in 2019, and it calls for building the infrastructure necessary to create, store, and distribute hydrogen as well as using the fuel to power local transportation systems like buses and trains. Corridor H2, a similar initiative, will create a network of hydrogen distribution facilities in Occitania along the route between the Mediterranean and the North Sea. The Corridor H2 project will get a €40 million loan from the EIB.[112][113]

Germany

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German car manufacturer BMW has been working with hydrogen for years.[quantify].[114] The German government has announced plans to hold tenders for 5.5 GW of new hydrogen-ready gas-fired power plants and 2 GW of "comprehensive H2-ready modernisations" of existing gas power stations at the end of 2024 or beginning of 2025[115]

Iceland

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Iceland has committed to becoming the world's first hydrogen economy by the year 2050.[116] Iceland is in a unique position. Presently,[when?] it imports all the petroleum products necessary to power its automobiles and fishing fleet. Iceland has large geothermal resources, so much that the local price of electricity actually is lower than the price of the hydrocarbons that could be used to produce that electricity.

Iceland already converts its surplus electricity into exportable goods and hydrocarbon replacements. In 2002, it produced 2,000 tons of hydrogen gas by electrolysis, primarily for the production of ammonia (NH3) for fertilizer. Ammonia is produced, transported, and used throughout the world, and 90% of the cost of ammonia is the cost of the energy to produce it.

Neither industry directly replaces hydrocarbons. Reykjavík, Iceland, had a small pilot fleet of city buses running on compressed hydrogen,[117] and research on powering the nation's fishing fleet with hydrogen is under way (for example by companies as Icelandic New Energy). For more practical purposes, Iceland might process imported oil with hydrogen to extend it, rather than to replace it altogether.

The Reykjavík buses are part of a larger program, HyFLEET:CUTE,[118] operating hydrogen fueled buses in eight European cities. HyFLEET:CUTE buses were also operated in Beijing, China and Perth, Australia (see below). A pilot project demonstrating a hydrogen economy is operational on the Norwegian island of Utsira. The installation combines wind power and hydrogen power. In periods when there is surplus wind energy, the excess power is used for generating hydrogen by electrolysis. The hydrogen is stored, and is available for power generation in periods when there is little wind.[citation needed]

India

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India is said to adopt hydrogen and H-CNG, due to several reasons, amongst which the fact that a national rollout of natural gas networks is already taking place and natural gas is already a major vehicle fuel. In addition, India suffers from extreme air pollution in urban areas.[119][120] According to some estimates, nearly 80% of India's hydrogen is projected to be green, driven by cost declines and new production technologies.[121]

Currently however, hydrogen energy is just at the Research, Development and Demonstration (RD&D) stage.[122][123] As a result, the number of hydrogen stations may still be low,[124] although much more are expected to be introduced soon.[125][126][127]

Poland

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It planning open first hydrogen publication stations, The Ministry of Climate and Environment (MKiŚ) will soon schan competitions for 2-3 hydrogen refueling stations, Polish Deputy Minister in this ministry Krzysztof Bolesta.[128]

Saudi Arabia

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Saudi Arabia as a part of the NEOM project, is looking to produce roughly 1.2 million tonnes of green ammonia a year, beginning production in 2025.[129]

In Cairo, Egypt, Saudi real estate funding skyscraper project powered by hydrogen.[130]

Turkey

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The Turkish Ministry of Energy and Natural Resources and the United Nations Industrial Development Organization created the International Centre for Hydrogen Energy Technologies (UNIDO-ICHET) in Istanbul in 2004 and it ran to 2012.[131] In 2023 the ministry published a Hydrogen Technologies Strategy and Roadmap.[132]

United Kingdom

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The UK started a fuel cell pilot program in January 2004, the program ran two Fuel cell buses on route 25 in London until December 2005, and switched to route RV1 until January 2007.[133] The Hydrogen Expedition is currently working to create a hydrogen fuel cell-powered ship and using it to circumnavigate the globe, as a way to demonstrate the capability of hydrogen fuel cells.[134] In August 2021 the UK Government claimed it was the first to have a Hydrogen Strategy and produced a document.[135]

In August 2021, Chris Jackson quit as chair of the UK Hydrogen and Fuel Cell Association, a leading hydrogen industry association, claiming that UK and Norwegian oil companies had intentionally inflated their cost projections for blue hydrogen in order to maximize future technology support payments by the UK government.[136]

United States

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Several domestic U.S. automobile companies have developed vehicles using hydrogen, such as GM and Toyota.[137] However, as of February 2020, infrastructure for hydrogen was underdeveloped except in some parts of California.[138] The United States have their own hydrogen policy.[citation needed] A joint venture between NREL and Xcel Energy is combining wind power and hydrogen power in the same way in Colorado.[139] Hydro in Newfoundland and Labrador are converting the current wind-diesel Power System on the remote island of Ramea into a Wind-Hydrogen Hybrid Power Systems facility.[140] Five pump station hubs being delivered to heavy-duty H2 trucks in Texas.[141] Hydrogen City built Green by Hydrogen International (GHI), to planning open in 2026.[142]

In 2006, Florida’s infrastructure project was commissioned.[143] First opened Orlando as public bus transportation, Ford Motor Company announced putting a fleet of hydrogen-fueled Ford E-450.[144][145] Liquidated hydrogen mobile system was constructed at Titusville.[146][147] An FPL’s pilot clean hydrogen facility operated in Okeechobee County.[148]

A similar pilot project on Stuart Island uses solar power, instead of wind power, to generate electricity. When excess electricity is available after the batteries are fully charged, hydrogen is generated by electrolysis and stored for later production of electricity by fuel cell.[149] The US also have a large natural gas pipeline system already in place.[109]

Vietnam

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Việt Nam Energy Association have included green hydrogenation support.[150] Australian clean energy company Pure Hydrogen Corporation Limited announced on July 22 that it has signed an MoU with Vietnam public transportation.[151]

See also

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References

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