Trystan Casey
Carbon pricing is a policy tool that discourages the use of carbon-intensive generators, such as coal-fired power plants, in favor of lower- or zero-emitting generators, like efficient combined-cycle natural gas plants or renewables. The cost of carbon emissions permits can significantly influence electricity prices. For instance, a one euro increase in emissions costs can lead to an average increase of over 80 cents in wholesale electricity prices. In the California electricity market, NOx emissions permits were used to justify higher bids, resulting in higher prices for all electricity produced. The impact of carbon pricing on electricity prices is complex and depends on various factors, including market conditions, demand, and the specific design of the carbon pricing policy.
| Characteristics | Values |
|---|---|
| Impact of issuing emissions permits on electricity prices | Evidence suggests that issuing emissions permits does raise electricity prices. For example, in the California electricity market, NOx emissions permits were used by generation unit owners to cost-justify higher bids, setting higher prices for all electricity they produced. |
| Carbon pricing | A policy tool that discourages the use of carbon-intensive generators, like coal-fired power plants, in favor of lower- or zero-emitting generators, like efficient combined-cycle natural gas plants or renewables. |
| Impact of carbon pricing on electricity prices | Carbon pricing raises wholesale electricity prices, which leads to higher retail electricity prices. |
| Impact of carbon pricing on emissions | Carbon pricing can significantly reduce carbon emissions from the power sector. |
| EU Emissions Trading System | The EU aims to reduce its emissions by 55% by 2030 compared to 1990 and become carbon neutral by 2050. |
| EU Emissions Trading System price development | The average annual price in 2018 was around 15 euros, in 2019 and 2020 it was approximately 25 euros, and in 2021, the average was 50.15 euros. |
| Auctioning of permits | Auctioning of permits should not result in inflationary effects on prices, at least in the short run, as firms fully internalize the carbon price as the opportunity cost of using permits. |
| Cap-and-trade programs | Cap-and-trade programs place a mass-based cap on aggregate carbon emissions from emitting power plants, with the cap gradually declining over time to increase stringency. Plants must possess a permit for every ton of carbon dioxide emitted, and they can trade these permits between plants. |
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What You'll Learn
Carbon pricing raises wholesale electricity prices
Carbon pricing is a policy tool that discourages the use of carbon-intensive generators, such as coal-fired power plants, in favor of low- or zero-emitting generators, such as efficient combined-cycle natural gas plants or renewables. The aim is to reduce the amount of carbon dioxide released into the atmosphere.
When carbon pricing is applied to the electricity sector, it raises wholesale electricity prices, which leads to higher retail electricity prices. For example, a carbon price of $7 per ton would increase the cost of operating an average coal plant by an estimated $7/MWh and about $3/MWh for an average natural gas plant. A higher carbon price of $50 per MWh for coal and natural gas plants would be a substantial increase compared to typical market clearing prices and would likely raise clearing prices.
In the Spanish wholesale electricity market, the average pass-through rate was found to be over 80%, meaning a one euro increase in emissions costs results in an increase in wholesale electricity prices of more than 80 cents. During peak times, the pass-through rate can increase to 100%.
In the California electricity market, NOx emissions permits were used by generation unit owners to cost-justify higher bids, which set higher prices for all electricity produced.
Carbon pricing can also be implemented through emissions trading systems, where firms must acquire allowances for each ton of greenhouse gases emitted, with the supply of permits limited by the government. Companies can purchase these permits on the market if they do not have enough to cover their emissions. This mechanism encourages companies to reduce their emissions, but it also provides them with the flexibility to choose the most cost-effective method of doing so.
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Electricity suppliers exercise unilateral market power
The issuance of emissions permits can lead to an increase in electricity prices, as suppliers may use this as a convenient vehicle to exercise unilateral market power. Unilateral market power refers to the ability of individual suppliers to influence market prices by changing their offer prices based on their own incentives and abilities, rather than in response to market forces.
In the context of emissions permits, a study by Kolstad and Wolak examined the California electricity market and found that generation unit owners with plants located in specific regions paid significantly higher prices for nitrogen oxides (NOx) emissions permits in 2000 and 2001. This allowed them to cost-justify higher bids, which then set higher prices for all the electricity they produced. The study provides evidence that the emission permit prices were used to enhance the suppliers' ability to exercise unilateral market power, as the higher permit prices did not translate into correspondingly higher production costs.
In another example, a study by Fabra and Reguant analysed the Spanish wholesale electricity market before and after the introduction of a cap-and-trade program for carbon emissions. They found a high pass-through rate, indicating that an increase in emissions costs led to a significant increase in wholesale electricity prices. This pass-through rate was even higher during peak times when demand was high and the generating firms faced no start-up costs.
Additionally, a study of the New Zealand electricity market found that large suppliers submitted higher offer prices when they had a greater ability or incentive to exercise unilateral market power. This resulted in a positive relationship between market-clearing prices and the suppliers' ability and incentive to exercise market power.
These studies demonstrate that the issuance of emissions permits can provide an opportunity for electricity suppliers to exercise unilateral market power and influence price increases. The ability to pass on the costs of emissions permits to consumers through higher electricity prices can be a convenient way for suppliers to maintain their profits, even if their actual production costs have not increased proportionally.
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Firms pass on costs to consumers during high demand
The issuing of emissions permits can indeed raise electricity prices, as seen in the example of the NOx emissions permits in the California electricity market. The generation unit owners with some of their plants in the South Coast Air Quality Management District (SCAQMD) paid higher prices for NOx emissions permits in 2000 and 2001, which resulted in higher electricity prices for consumers. This is a result of the interaction between the emissions permit market and the competitive conditions in the California electricity market, allowing electricity suppliers to exercise unilateral market power.
The pass-through rate of emissions charges in electricity markets is high, as observed in the Spanish wholesale electricity market after the introduction of the European cap-and-trade program for carbon emissions. The average pass-through rate was over 80%, meaning a one-euro increase in emissions costs led to an increase of more than 80 cents in wholesale electricity prices. This pass-through rate increased to 100% during peak times when generating firms faced no start-up costs, indicating that firms are more able to pass through costs during periods of high demand.
The high pass-through rate can be attributed to the institutional features of electricity markets, where electricity is traded through high-frequency auctions with many buyers having inelastic demand. The marginal emissions costs can be accurately measured since they depend on the carbon price and the emissions rate of the price-setting unit. As a result, firms can fully internalize the carbon price as the opportunity cost of using permits, and they can pass on these costs to consumers by raising wholesale prices.
The carbon pricing policy tool discourages the use of carbon-intensive generators, such as coal-fired power plants, by imposing fees or caps on carbon dioxide emissions. This leads to higher operating costs for coal and natural gas plants, which are then passed on to consumers in the form of higher electricity prices. As carbon pricing raises wholesale electricity prices, it ultimately leads to higher retail electricity prices for consumers.
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Firms fully internalize the carbon price
Internal carbon pricing is a tool that helps firms make decisions and guide their business investments. It is also a risk management tool that allows companies to evaluate the impact of mandatory carbon prices on their operations. This is especially important when considering the potential impact of climate change policies on investment portfolios.
There are three main forms of internal carbon pricing: an internal carbon fee, a shadow price, and an implicit price. An internal carbon fee is the market value of each ton of carbon emissions, usually set at a range from $5 to $20 per ton. The funds collected are then used for internal efficiency projects, green energy, and carbon offset programs. A shadow price is an estimated value on carbon to encourage low-carbon investment, and an implicit price is based on the cost of implementing emission reduction projects.
When firms fully internalize the carbon price, it does not necessarily result in inflationary effects on prices in the short run. This is because the cost of price adjustment is very small, and it does not significantly impact the firm's strategic behavior. However, in the long run, carbon pricing does raise wholesale electricity prices, which leads to higher retail electricity prices.
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The EU aims to reduce emissions by 55% by 2030
The EU aims to reduce carbon emissions by 55% by 2030, compared with 1990 levels. This target is part of a global effort to tackle climate change by reducing atmospheric pollution, especially carbon dioxide (CO2) emissions. To achieve this, the EU has introduced the Fit for 55 package, which includes several interlinked revised laws and new proposed laws on climate and energy.
One key measure is the EU's Emissions Trading System (ETS), which regulates about 40% of total EU greenhouse gas emissions and covers around 10,000 power stations and manufacturing plants. The ETS obliges companies to hold a permit for each tonne of CO2 they emit, which they must purchase through auctions. This system provides an incentive for companies to reduce their emissions, as the cost of permits can be significant.
Another measure is the Carbon Border Adjustment Mechanism, which will apply a carbon levy on imports of certain goods from outside the EU. This mechanism aims to encourage companies, both within and outside the EU, to decarbonize by placing a carbon price on imports from countries with less ambitious climate legislation. It also helps to prevent carbon leakage, which occurs when industries move production to countries with less strict emissions rules.
To further reduce emissions, the EU is also focusing on the deployment of renewable energy and the development of clean energy sources. Parliament has approved rules to increase the share of renewables in the EU's final energy consumption to 42.5% by 2030, while EU countries are encouraged to aim for 45%. Additionally, there is a push for zero-emission vehicles, with a target of zero CO2 emissions for all new cars and vans sold in the EU from 2035 onwards.
These measures demonstrate the EU's commitment to addressing climate change and transitioning to a more sustainable and low-carbon economy. While the specific impact of these policies on electricity prices is complex and context-dependent, carbon pricing mechanisms generally lead to higher wholesale electricity prices, which are often passed on to consumers as higher retail electricity prices.
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Frequently asked questions
Carbon pricing is a policy tool that discourages the use of carbon-intensive generators, like coal-fired power plants, in favor of lower- or zero-emitting generators, like efficient combined-cycle natural gas plants or renewables. Firms must acquire allowances for each ton of carbon dioxide they emit, with the supply of such permits limited by the government.
Yes, carbon pricing raises wholesale electricity prices, which leads to higher retail electricity prices. A one euro increase in emissions costs translates into an average increase in wholesale electricity prices of more than 80 cents.
The purpose of carbon pricing is to reduce the amount of carbon dioxide released into the atmosphere. This is beneficial for the environment and helps to address climate change.
In the short term, consumers can respond to higher retail prices by reducing electricity consumption through energy conservation efforts, such as turning off lights when not in use or using appliances less frequently.
