Ameer Randolph
With the world facing an ever-growing need for energy, the question of whether renewable energy sources like hydropower and geothermal energy are cheaper than fossil fuels is a pressing one. While environmental sustainability is a key driver for consumers, financial considerations are also crucial for governments and corporations. In recent years, hydropower has provided cheaper electricity than fossil fuels, with the global weighted-average levelized cost being equal to or below the cheapest fossil fuel alternative in most years between 2010 and 2018. Geothermal energy, on the other hand, has faced challenges due to high upfront costs, but recent reports indicate that it may be more cost-competitive than previously thought, and could even be cheaper than fossil fuels like coal.
| Characteristics | Values |
|---|---|
| Hydropower cost compared to fossil fuels | The global weighted-average levelized cost of hydropower electricity was equal to or below the cost of the cheapest fossil fuel alternative between 2010 and 2018 (except for two years). |
| Hydropower's current cost | $0.05 per kilowatt-hour (kWh) |
| Geothermal energy cost compared to fossil fuels | Geothermal energy may be cheaper than fossil fuels, but it has high upfront costs. |
| Geothermal energy's current cost | $72 per megawatt-hour as of 2018; $0.10/kWh |
| Other renewable energy costs | Solar and wind power can now compete with fossil fuels in terms of cost. |
| Levelized cost of electricity (LCOE) | A misleading metric as it only considers the cost of renewables when they are able to generate energy. |
| Levelized Avoided Cost of Electricity (LACE) | Examines the money saved when one means of generating electricity is used compared to another. |
Explore related products
What You'll Learn
Hydropower has been cheaper than fossil fuels since 2010
Hydropower has been a source of clean, renewable electricity for over a century, currently providing almost 7% of the nation's electricity. Since 2010, hydropower has been cheaper than fossil fuels. Between 2010 and 2018, the global weighted-average levelized cost of hydropower electricity was equal to or below the cost of the cheapest fossil fuel-fired alternative, except for two years. Thus, the majority of hydropower used between 2010 and 2018 cost less than the cheapest fossil fuel option.
Hydropower is the cheapest source of renewable energy, with an average cost of $0.05 per kilowatt-hour (kWh). In comparison, fossil fuels like oil and gas typically range from $0.05/kWh to over $0.15/kWh. The cost of hydropower has also been falling, dropping by 11% last year.
While geothermal energy has the potential to be cheaper than fossil fuels, it currently costs significantly more than wind energy, at around $72 per megawatt-hour. However, it may be a worthwhile investment in the long run, especially with government subsidies and stimulus packages. Geothermal energy is a reliable source of round-the-clock power where there are high-temperature resources.
Renewable energy sources like hydropower, solar, wind, and geothermal power have clear environmental benefits, such as reducing air and water pollution, improving public health, and reducing the country's carbon footprint. They can also stimulate the economy by creating more jobs than the fossil fuel industry and offering more stable energy prices. While the initial costs of installing renewable energy technologies may seem expensive, these costs are dropping, and renewable energy sources can pay for themselves in less time every year.
Bioenergy: Fossil Fuel or Renewable Energy Source?
You may want to see also
Explore related products
Geothermal energy is more expensive than wind energy
Geothermal energy is generally more expensive than wind energy. While geothermal energy is a productive and economically friendly source of round-the-clock power, its costs are significantly higher than wind energy.
The global LCOE (Levelized Cost of Electricity) of new geothermal plants in 2018 was around $72 per megawatt-hour, while utility-scale wind energy hovers around $35/MWh. The high costs of geothermal energy are due to the nature of obtaining geothermal resources, which requires significant equipment and investment. Field preparation and well construction, for example, demand heavy drilling equipment that other non-hydropower renewable sectors do not.
The construction of new power lines can also add to installation costs, especially in locations like Indonesia, where geothermal spots are scattered over many islands and near mountainous and forested areas. This makes a grid connection to geothermal spots more expensive.
However, it is important to note that geothermal energy provides around-the-clock electricity, while wind energy is intermittent and inconsistent. When taking reliability into account, geothermal energy is more similar to nuclear or coal- and gas-fired power plants.
Additionally, the cost of geothermal energy is expected to decrease over time. Through initiatives like the Enhanced Geothermal Shot, the US Department of Energy (DOE) aims to reduce the cost of geothermal energy by 95% by 2035. With continued technological innovation, government support, and the utilization of next-generation geothermal resources, the cost of geothermal energy is likely to become more competitive with wind energy in the future.
Fossil Fuels: More Harm Than Good?
You may want to see also
Explore related products
Geothermal energy has high upfront costs
Geothermal energy has been proven to be cheaper than fossil fuels. However, geothermal energy has high upfront costs. The barriers to deploying geothermal resources are mainly a result of geothermal energy's unique characteristics as a subsurface resource. Exploring, discovering, developing, and managing geothermal resources is inherently complex and can have greater risks and upfront costs than other renewable energy technologies. The costs of building a geothermal power plant are heavily weighted toward early expenses rather than fuel to keep them running. Exploration activities—pre-drilling geotechnical studies, exploration, confirmation, and development drilling—have a collective impact on overall project costs and success.
The high upfront costs of geothermal energy can be a barrier to its adoption and slow down its growth. The levelized cost of geothermal energy is around $59–$101 per megawatt-hour (MWh), compared with under $54/MWh for utility-scale solar PV and onshore wind, and $44–$73/MWh for combined-cycle gas plants. The high upfront costs of geothermal energy can make it difficult to secure financing and increase the overall project costs.
However, it is important to note that the costs of geothermal energy are expected to decrease over time. With innovations from companies and support from government organizations, the cost of geothermal energy is projected to reduce significantly in the coming years. For example, the U.S. Department of Energy (DOE) aims to reduce the cost of geothermal energy by 95% by 2035 through its Enhanced Geothermal Shot initiative.
In addition, geothermal energy has a high-capacity factor, which means that it can produce electricity 90% of the time or more. This high-capacity factor allows for a quicker recoup of costs as there is very little downtime once a geothermal plant is operational. Despite the high upfront costs, geothermal energy may prove to be a worthwhile investment in the long run due to its high-capacity factor and the potential for cost reduction in the future.
Chemical Rock: A Fossil Fuel Source?
You may want to see also
Explore related products
Geothermal energy is more reliable than fossil fuels
In addition to being environmentally friendly, geothermal energy can provide a productive and economically viable source of round-the-clock power. Geothermal power plants can run consistently, 24 hours a day, 365 days a year, making them more reliable than coal or nuclear plants. This is because the energy is generated near the plant, saving on processing and transportation costs. The fuel for geothermal energy is also essentially free, resulting in low marginal costs.
While the initial costs of installing geothermal energy technology can be high, these expenses are decreasing over time. Government subsidies and investments in renewable energy sources also contribute to making geothermal energy more financially viable. Geothermal heat pumps, which can be used almost anywhere, are currently the most viable option for utilizing geothermal energy.
The reliability of geothermal energy is further enhanced by its constant underground temperatures, enabling its use for heating and cooling across the world. Iceland, for example, relies heavily on geothermal energy, with about 90% of its housing using geothermal heating systems as of 2013. Geothermal power plants in the United States have also demonstrated their potential, with a capacity of about 3,442 MW in 2013, although they produced less than 1% of the country's electricity.
In summary, geothermal energy offers a reliable and environmentally friendly alternative to fossil fuels. While initial costs may be high, the long-term benefits, including consistent energy production and low marginal costs, make geothermal energy a promising and increasingly attractive option for meeting the world's energy needs.
Fossil Fuels: Powering Our World, But How?
You may want to see also
Explore related products
Geothermal energy is cleaner and more efficient than fossil fuels
Renewable energy sources such as geothermal energy are essential in reducing our reliance on fossil fuels and their detrimental impact on the environment. Geothermal energy is a clean and efficient alternative that offers several advantages over fossil fuels.
Firstly, geothermal energy is a much cleaner source of energy compared to fossil fuels. Geothermal power plants do not burn fuel to generate electricity, resulting in significantly reduced emissions. Specifically, geothermal power plants emit 97% less sulfur compounds and 99% less carbon dioxide than fossil fuel power plants of similar size. This reduction in emissions contributes to improved air quality and mitigates the environmental impact of energy production.
Secondly, geothermal energy is highly efficient in terms of both energy production and cost-effectiveness. Geothermal power plants have a high-capacity factor, capable of producing electricity more than 90% of the time. This reliability ensures a consistent source of electricity, reducing the need for backup power sources. Additionally, while geothermal energy may have higher upfront costs due to exploration and development, its low operational costs driven by minimal fuel requirements make it economically competitive over time.
Geothermal power plants also have a lower land footprint compared to many other energy-generation technologies, and they do not require fuel storage or transportation infrastructure. This reduced spatial requirement makes geothermal energy particularly attractive for communities, as district heating systems and geothermal heat pumps can be easily integrated with minimal visual impact.
Furthermore, geothermal energy is a virtually inexhaustible source of power. The heat harnessed by geothermal power plants is continuously replenished by the natural decay of radioactive elements in the Earth's core, ensuring a stable and long-lasting supply of energy.
In summary, geothermal energy offers a cleaner and more efficient alternative to fossil fuels. With reduced emissions, high energy production capacity, cost-effectiveness, and a minimal spatial footprint, geothermal energy is an attractive option for communities and policymakers seeking to transition away from fossil fuels toward more sustainable energy sources.
Fossil Fuels: Green Energy or Environmental Disaster?
You may want to see also
Frequently asked questions
Yes, hydropower has been providing cheaper electricity than fossil fuels. Between 2010 and 2018, the global weighted-average levelized cost of hydropower electricity was equal to or below the cost of the cheapest fossil fuel alternative.
Geothermal energy is generally more expensive than fossil fuels due to high upfront costs. However, it is cleaner, more efficient, and more cost-effective than burning fossil fuels when reliable, high-temperature resources are available. Geothermal energy also has a high-capacity factor, allowing it to produce electricity more than 90% of the time, which helps recoup costs quickly.
The primary challenge is the cost per kilowatt-hour, which is a serious roadblock to the adoption of renewable energy sources. Additionally, renewable energy sources may have higher initial installation costs and face geographical limitations, such as in the case of geothermal energy.
Renewable energy sources offer vital health and environmental benefits by reducing our dependence on foreign oil and decreasing carbon emissions. They also provide consistent energy generation, with geothermal energy being able to produce electricity 24 hours a day, 365 days a year. Additionally, government subsidies and incentives for renewable energy can make these sources more financially attractive.
![USDA Organic Superfood Greens [28 Powerful Ingredients] Natural Super Greens Capsules, Fruit and Veggie Supplement with Alfalfa, Beet Root and Ginger to Support Energy and Immunity, 60 Tablets](https://m.media-amazon.com/images/I/818CY8InwEL._AC_UL320_.jpg)
