Mercedes Mullins
Fossil fuels have long been the dominant source of energy, but the tide is turning as renewable energy sources like solar and wind power are becoming increasingly competitive in terms of cost and efficiency. While fossil fuel cells have their advantages, they are facing competition from cheaper alternatives. This begs the question: are fossil fuel cells cheap? This article will explore the costs and benefits of fossil fuel cells in an era of rapidly evolving energy technology.
| Characteristics | Values |
|---|---|
| Cost of fossil fuel generation | Double the cost of utility-scale solar |
| Cheapest fossil fuel alternative | Gas Combined Cycle |
| Cost range of Gas Combined Cycle | $45 to $108 |
| Cost range of utility-scale solar | $29 to $92 |
| Solar power cheaper than cheapest fossil fuel alternative by | 41% |
| Onshore wind cheaper than cheapest fossil fuel alternative by | 53% |
| Fuel cells built from | Platinum |
| Percentage of cost of a single fuel cell accounted for by platinum | 60% |
| Cost of fuel cell stack | $60 |
| High-end fuel cell stacks conversion rate | Upwards of 59% |
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What You'll Learn
Fossil fuels vs renewable energy sources
Fossil fuels are a finite source of energy, and their use has severe consequences for the environment, human health, and the economy. The burning of fossil fuels releases vast amounts of CO2 into the atmosphere, contributing to global warming and causing irreversible damage to the environment, wildlife, and humans. In 2018, air pollution from fossil fuels resulted in $2.9 trillion in health and economic costs, approximately $8 billion per day.
In contrast, renewable energy sources, such as solar, wind, and water, are naturally replenished and emit little to no greenhouse gases or pollutants. Renewable energy facilities can also be built more quickly than fossil fuel plants. While solar and onshore wind farms typically take less than two years to construct, gas-fired power plants often require four years to become operational and may need additional gas pipeline infrastructure.
In terms of cost, renewable energy sources have historically been more expensive to install than fossil fuels. However, this is changing. The cost of electricity from solar power has decreased significantly, and onshore and offshore wind energy costs have also fallen. As a result, renewable energy sources are now the cheapest power option in most parts of the world.
In addition to being more affordable, renewable energy sources are also more reliable. Fossil fuels are subject to unpredictable price swings, whereas renewable energy sources are independent of fuel costs and can produce energy "for free" once installed.
The transition to renewable energy is not without its challenges. While lithium-ion batteries can help smooth the variability of wind and solar power, they are not yet capable of meeting all power-system requirements. Additionally, while renewable energy sources emit fewer greenhouse gases over their lifetime, they still produce some emissions.
Overall, renewable energy sources offer a cleaner, more affordable, and reliable alternative to fossil fuels. By investing in renewable energy, countries can reduce their dependence on fossil fuels, protect themselves from price swings, and contribute to the fight against climate change.
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Pros and cons of cheap fuel cells
Fuel cells are devices that convert the chemical energy of fuel directly into electrical energy. They are unique in terms of the variety of their potential applications and can use a wide range of fuels and feedstocks. They can be used in a wide range of applications, providing power for applications across multiple sectors, including transportation, industrial/commercial/residential buildings, and long-term energy storage for the grid in reversible systems.
Pros of cheap fuel cells
Cheap fuel cells are significantly more affordable, which increases their accessibility. While richer nations have access to cutting-edge technology, developing countries will rely on fuel cells being affordable, accessible, and readily available. Researchers are constantly creating cheaper fuel cells that will be adopted by an increasing number of people. For instance, a team of European researchers, led by scientists from Imperial College London, have recently developed a cost-effective catalyst made of just iron, carbon, and nitrogen (significantly cheaper than the platinum which is usually used).
Cons of cheap fuel cells
Cheap fuel cells often have lower efficiency, which means they convert a smaller percentage of their fuel's energy into usable electricity, resulting in worse overall performance. They are also built from cheaper materials, and with manufacturers using less expensive production techniques, the fuel cells built can often have shorter lifespans and need more frequent service and replacements of parts. They are also known for having lower power output capacities. Low-quality components can lead to operational issues and substantial reliability issues. Cheap fuel cells may also lack advanced features that can make their operation easier and more user-friendly, such as integrated safety systems, advanced control systems, and enhanced connectivity options.
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Fuel cell efficiency
Fuel cells are unique in terms of the variety of their potential applications; they can use a wide range of fuels and feedstocks and can provide power for systems as large as a utility power station and as small as a laptop computer. Fuel cells can be used in a wide range of applications, providing power for applications across multiple sectors, including transportation, industrial/commercial/residential buildings, and long-term energy storage for the grid in reversible systems.
The efficiency of fuel cells can also be increased by using combined heat and power (CHP) systems, which recover heat that would otherwise be lost into the atmosphere and use it to generate additional power. This can increase the overall efficiency of the system to as high as 80-85%. Additionally, ceramics cooked at lower temperatures can boost efficiency.
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Fuel cell costs
Fuel cells are unique in the variety of their potential applications. They can use a wide range of fuels and feedstocks and can provide power for systems as large as a utility power station and as small as a laptop computer. They can be used in transportation, industrial, commercial, and residential buildings, as well as for long-term energy storage for the grid in reversible systems.
The cost and fuel economy trajectories for fuel cells are based on estimates of commercially available technologies. Estimates of fuel cell costs and hydrogen storage vessel costs are based on assumptions of low production volume manufacturing that gradually increases to high-volume manufacturing.
The U.S. Department of Energy (DOE) is working to overcome critical technical barriers to fuel cell development. Cost, performance, and durability are still key challenges in the fuel cell industry. Research, development, and demonstration (RD&D) focus on developing low-cost fuel cell stack and balance-of-plant (BOP) components and advanced high-volume manufacturing approaches to reduce overall system costs.
Platinum, for example, is one of the largest cost components of a direct hydrogen-fuelled polymer electrolyte membrane fuel cell. Therefore, there is an emphasis on approaches that will increase activity and utilisation, as well as reduce the content of platinum group metals (PGMs) and PGM-alloy catalysts.
Fuel cell electric vehicles (FCEVs) are currently manufactured at low production volumes and are available for sale or lease in the US for approximately $58,300 or $379-$389 per month. The purchase or lease of the vehicle commonly includes access to free hydrogen fuel for up to 3 years or $13,000-$15,000.
Additionally, new materials and technologies are being explored to make fuel cells more efficient and cheaper. For instance, ceramics cooked at lower temperatures can boost efficiency. Researchers have also found ways to boost the power from BZY fuel cells by pioneering an alternative mixing scheme called solid-state reactive sintering, which lowers the blending temperature.
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Fuel cell performance
The performance of a fuel cell is highly influenced by flow channel designs. To understand fuel cell performance, the power density of the membrane is calculated at a particular voltage, relative humidity (RH), and temperature. The effect of scale-up and flow channel design on proton exchange membrane fuel cells (PEMFCs) is optimized using single-cell performance studies.
Fuel cells can operate at higher efficiencies than combustion engines and can convert the chemical energy in the fuel directly to electrical energy with efficiencies capable of exceeding 60%. High-temperature fuel cells, such as carbonate fuel cells, can reach more than 60% efficiency and outperform similar-sized conventional energy sources. This is because they can use their internal heat generation for hydrogen production through the steam reforming of hydrocarbon fuels.
Fuel cells are unique in terms of their potential applications. They can use a wide range of fuels and feedstocks and can provide power for systems as large as a utility power station and as small as a laptop computer. They can be used in a wide range of applications, providing power for transportation, industrial/commercial/residential buildings, and long-term energy storage for the grid in reversible systems.
Fuel cells are a remarkable source of clean energy that operates at high electrical efficiency and releases very few emissions or pollutants into the atmosphere. Hydrogen fuel cells, for example, emit only water, addressing critical climate challenges as there are no carbon dioxide emissions or air pollutants.
Research and development efforts are ongoing to improve fuel cell efficiency and performance, focusing on innovative materials and integration strategies. For instance, researchers have found a way to boost the power from BZY fuel cells by pioneering an alternative mixing scheme called solid-state reactive sintering, which lowers the blending temperature.
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Frequently asked questions
Fossil fuels are fuels such as coal, oil, and gas that are derived from the fossilized remains of dead plants and animals.
Fossil fuels are currently twice as expensive as utility-scale solar and wind energy. However, the price of fossil fuels is subject to fluctuations and has been increasing, making renewable energy sources more lucrative.
Fuel cells are devices that use the chemical energy of hydrogen or other fuels to efficiently produce electricity, water, and heat. They work similarly to batteries but do not need recharging and have a wide range of applications.
Fuel cells have traditionally been expensive, but recent innovations in materials and production techniques have made them more affordable. While some high-end fuel cell stacks can cost upwards of $10,000, cheaper options are now available for as little as $60. However, inexpensive fuel cells may have lower efficiency, performance, durability, and lack advanced features.
