Helena Joyce
Pollution credits, also known as emission reduction credits (ERCs) or carbon credits, are a way for companies to compensate for their emissions of carbon dioxide and other greenhouse gases. They are earned when a company reduces air emissions beyond what is required by permits and rules. These credits can then be used by the company or sold to other companies that need to offset their emissions. The primary goal of pollution credits is to support the environment and curb the negative impacts of businesses and consumers on the planet.
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What You'll Learn
Carbon credits and carbon offsets
Carbon offsets are a way to reduce the creation of carbon dioxide and its presence in the atmosphere. They are produced by independent companies that pull CO2 emissions from the atmosphere. These offsets are then sold to companies that emit (or have emitted) CO2. Offsets can be created by anyone, even on a small scale, and are often purchased by individuals, small businesses, and large corporations. An example of a carbon offsetting action is planting trees, which absorb carbon dioxide and ozone.
Carbon credits, on the other hand, are typically created by governments to limit GHG emissions. Governments place caps on organisations' GHG emissions, limiting the amount they can emit. Each ton of CO2 that a company is allowed to emit is referred to as a carbon credit. Companies must then comply with this cap by reducing emissions through improved energy efficiency or switching to renewable energy sources. If a company emits fewer GHGs than the allocated amount, they can sell their surplus credits. Conversely, if a company exceeds its limit, it must purchase additional credits from others in the market. Carbon credits are generally transacted in the carbon compliance market and are certified by governments or independent certification bodies.
While carbon offsets are voluntary and transacted in the smaller voluntary carbon market, carbon credits are mandatory in most cases and are traded in the larger compliance market. The voluntary nature of carbon offsets means that the choice to purchase them is purely based on the buyer's willingness to pay for their carbon footprint. In contrast, certain businesses are required by law to purchase carbon credits, making the market for carbon credits much bigger.
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Emission Reduction Credits (ERCs)
Pollution credits, also known as Emission Reduction Credits (ERCs), are credits earned by companies that reduce air emissions beyond what is required by permits and rules. ERCs are available for five different pollutants: ROG (Reactive Organic Gases), NOx (Oxides of Nitrogen), PM10 (Particulate Matter), SOx (Oxides of Sulfur), and CO (Carbon Monoxide).
ERCs are issued for reductions of actual emissions that are quantifiable, enforceable, permanent, and surplus. There is no minimum or maximum limit on the amount of reductions eligible for ERC certificates, and a credit can be earned for reducing as little as one ton of emissions. These certificates become a valuable commodity for businesses, which can be traded or sold.
The ERC system was established as part of the 1977 Clean Air Act Amendments and expanded in the 1990 Amendments, which introduced the concept of a cap-and-trade system. This system allows companies to buy and sell offsets, with the overall goal of reducing emissions. ERCs can be generated through avoidance or removal projects, with avoidance involving activities that reduce emissions by preventing the release of carbon dioxide or other greenhouse gases.
At a local level, emission rates serve as backstops to ensure specific emission sources are reduced over certain periods. Companies that wish to expand their operations or add equipment can redeem ERCs to offset the increase in emissions, ensuring a net benefit to air quality.
ERCs are also an important component of a country's decarbonization strategy, helping to attract climate finance and capital for community and ecosystem development and protection. They enable countries to meet their Nationally Determined Contribution (NDC) goals, as outlined in the Paris Agreement, which involves setting non-binding climate targets.
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Cap-and-trade systems
In a cap-and-trade system, the government sets an emissions cap and issues emission allowances consistent with that cap. Emissions sources participating in emissions trading programs, like power plants, receive allowances that authorize them to emit up to a certain amount of pollution over a specific amount of time. For example, in the EPA's Acid Rain Program, each allowance authorizes an emissions source to emit one ton of sulfur dioxide during an annual compliance period. Depending on the program, emissions sources receive allowances in different ways, usually through free allocation or auctions. Once an emissions source has an allowance, it can choose to use it to cover its emissions, sell it in the market, or bank (i.e., save) it to cover future emissions.
The trade part of cap-and-trade is a market for companies to buy and sell allowances that let them emit only a certain amount, as supply and demand set the price. Trading gives companies a strong incentive to save money by cutting emissions in the most cost-effective ways. Companies that cut their pollution faster can sell allowances to companies that pollute more, or "bank" them for future use. This market gives companies flexibility, increases the pool of available capital to make reductions, encourages companies to cut pollution faster, and rewards innovation.
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Carbon pricing
Emissions trading programs first set an emission reduction goal: a national, state, or regional cap on the overall amount of emissions that sources are allowed to emit into the air. This emissions cap is intended to incentivize effective pollution control and protect public health and the environment. By establishing emission caps, trading programs ensure that overall emission reduction goals are achieved.
Carbon offset and credit programs are a type of carbon pricing mechanism where entities can compensate for greenhouse gas emissions by investing in projects that reduce, avoid, or remove emissions. These projects can include forestry initiatives, renewable energy projects, and emission controls. Emission Reduction Credits (ERCs) are an example of carbon credits, where companies earn credits by reducing emissions beyond what is required by permits and rules. These credits can then be used or sold to companies that need emission offsets.
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$14.88
Plastic credits
The Verra Registry is a central storehouse of data on all registered projects and tracks the generation, retirement, and cancellation of all Plastic Credits. Verra issues Waste Collection Credits (WCCs) based on the volume of plastic waste collected and appropriately managed above what would have happened in the absence of the Plastic Program project. By purchasing WCCs, organizations directly contribute to collecting plastic waste from nature and establishing systems to prevent further pollution. Verra also issues Waste Recycling Credits (WRCs) based on the volume of plastic waste recycled above baseline rates. The purchase of WRCs helps scale recycling infrastructure and generates recycled plastic feedstock that can replace virgin plastic.
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Frequently asked questions
Pollution credits, also known as emission reduction credits (ERCs), carbon credits, or plastic credits, are credits earned by companies that reduce emissions beyond what is required by permits and rules. These credits can be used by the company that earned them or sold to other companies that need emission offsets.
Companies earn ERCs by reducing emissions of ROC, NOx, PM (including PM10), CO, or SOx beyond what is required by permits and rules. ERCs are issued for quantifiable, enforceable, permanent, and surplus reductions, with one credit earned for reducing at least one ton of emissions. These credits can then be redeemed by companies to offset increased pollution levels resulting from expansion or the addition of new equipment, ensuring a net decrease in air pollution.
Pollution credits provide a financial incentive for companies to reduce their environmental impact. They allow companies to profit by selling their credits and encourage innovation in pollution reduction techniques. However, there is skepticism about the effectiveness of these credit systems. Carbon credits, in particular, have been criticized for their lack of transparency, accuracy in measuring results, and potential to allow polluting companies to continue business-as-usual. Additionally, the claimed emissions reductions may be inflated compared to the actual reductions achieved.
