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Mexican Emissions Trading System

Compare ETS
ETS Status
in force
Jurisdictions
Mexico
Start of operation (year)
2020
Sectoral coverage
Mining and extractives
Industry
Power
Allocation
Free allocation (Grandparenting)
Offsets and credits
Domestic
Cap
273.1 MtCO2 (2021)
GHGs covered
CO2
Average secondary market price (2024)
No information on secondary market prices during 2024 available
Download factsheet

General Information

The Mexico ETS, the first in Latin America, started its pilot phase in January 2020. It covers direct CO2 emissions from fixed sources in the energy and industry sectors emitting at least 100,000 tCO2 per year, representing around 40% of national GHG emissions and 90% of emissions reported in the National Emissions Registry (RENE).* Under the Mexico ETS, covered entities must surrender allowances for all their covered emissions. Allowances are allocated through grandparenting based on historical emissions, which are verified annually. The level of free allocation is expected to be reduced from the first year of the operational phase, expected to begin in 2025.

The Mexican ETS started with a Pilot Program with two phases: a pilot phase between 2020 and 2021, and a transition phase in 2022. The Pilot Program aimed to test system design, contribute to the NDC and other national mitigation goals, enhance the quality of emissions data, and build capacity in emissions trading, ultimately improving the design of the operational phase. 

The regulation of the Pilot Program (“the Agreement on the establishment of the preliminary basis of the Pilot Program of the Emissions Trading System”) remains in force until the regulation for the operational phase has been published.

 

 

* According to SEMARNAT.

In 2024, the fifth allocation took place. 

Mexico’s Ministry of Environment and Natural Resources (Secretaría de Medio Ambiente y Recursos Naturales, or SEMARNAT) prepared a draft regulation in coordination with the Consultative Committee of the Emissions Trading System (COCOSCE). In January 2024, the letter to validate the draft regulation was signed.

SEMARNAT also undertook several meetings with the industry and energy sectors, as well as other interested stakeholders, to understand their opinions on the technical elements foreseen for the next phase of the Mexico ETS.

The country also published its update to the “National Climate Change Strategy” in September 2024. One of its lines of action (T2.5), under the strategic area of Climate Finance, mentions the strengthening and promotion of economic and finance instruments that are innovative and fair, such as the ETS. Moreover, the updated “Transition Strategy to Promote Cleaner Technologies and Fuels” mentions the evaluation of the technical and economic viability to create or add synergies with the ETS, as a line of action around CCS. 

During its participation in COP 29, Mexico joined a group of countries (Canada, Chile, Georgia, Norway, Switzerland and the EU) that plan to present NDCs that are consistent with IPCC emission trajectories aligned with the 1.5°C Paris objective. These NDCs also plan to introduce absolute emissions reductions across all sectors of the economy and GHGs, and be aligned with real and significant emissions reductions towards carbon neutrality by mid-century.

Mining and extractives
Industry
Power

Emissions & Targets

760.2 MtCO2e (2022)

By 2030: Unconditional 35% below BAU GHG emissions baseline (Updated NDC)

By 2050: 50% below 2000 GHG levels (aspirational, included in the “General Law of Climate Change”)

No information on secondary market prices during 2024 available

Size & Phases

CO2

PILOT PHASE:  Two years (2020 and 2021)

TRANSITIONAL PHASE: One year (2022)

OPERATIONAL PHASE: From 2025 (The regulation of the Pilot Program remains in force until the regulation for the operational phase has been published).

A cap limits the total emissions allowed in the system.

PILOT:

2020: 271.3 MtCO2

2021: 273.1 MtCO2*

Three reserves are filled each year with allowances additional to the cap:

  • auctions reserve (equivalent to 5% of the cap, for regular auctions, which have not yet happened);
  • new entrants’ reserve (equivalent to 10% of the cap, for new entrants as well as increases in production among existing regulated entities); and
  • general reserve (equivalent to 5% of the cap, for ex-post adjustment allocation for entities with higher emissions relative to their baselines).

The reserves function as safeguards to avoid economic impacts on regulated entities during the Pilot phase, as required by the 2018 General Law on Climate Change.


 

* The increase in the cap between 2020 and 2021 is due to an extension in the sectoral allocation for regulated entities categorized as “others”.

PILOT:The Pilot ETS covered the energy and industrial sectors. The energy sector encompasses electricity generation, transmission, and distribution, as well as fossil fuel extraction, production, transport, and distribution.

The industrial sector includes automobile manufacturing, cement, lime, chemicals, food and beverages, glass, iron and steel, metals, mining, petrochemicals, and pulp and paper, as well as other industrial sub-sectors generating direct CO2 emissions from stationary sources at or above the threshold.

Inclusion thresholds: The Pilot ETS covers installations with annual direct emissions from stationary sources amounting to at least 100,000 tCO2.

OPERATIONAL PHASE: Sectors and thresholds are not expected to change during the operational phase.

Point source (all sectors)

Installations in the power and industry sectors with annual direct emissions from stationary sources of at least 100,000 tCO2.

~289 currently*


 

* According to SEMARNAT.

Allowance Allocation & Revenue

PILOT:The Pilot featured free allocation with the following specifications:

Initial allocation: Entities receive free allowances equivalent to 100% of their most recent verified emissions. New entrants receive free allowances based on their verified emissions in the year in which they first crossed the 100,000 tCO2 threshold. For participants that have not yet verified their emissions, initial allocation is done based on their historical emissions as reported to RENE.

Ex-post adjustment: An adjustment allocation is carried out from the general reserve for those participants that did not receive a quantity of free allowances equivalent to their verified emissions.

Participants may request additional allowances when an expansion in their production results in additional direct CO2 emissions from stationary sources. 

Plant closures: When an installation closes permanently, it may have to surrender the allowances that it has for the compliance period of the year before its closure. As well, it should return the free allowances received for the compliance period in which it closes. Whether the installation must only surrender allowances, return allowances, or both, depends on the date of the year in which it closes. SEMARNAT then cancels these allowances.

Auctions: SEMARNAT may auction allowances from the auction reserve. 

OPERATIONAL PHASE: Free allocation is expected to be reduced from the beginning of the operational phase. SEMARNAT is in the process of developing the auctioning mechanism.  

SEMARNAT is developing institutional arrangements to manage revenues during the operational phase.

Flexibility & Linking

Allowances allocated during the Pilot will not be eligible for banking into the operational phase. For the operational phase, banking will be allowed between phases and compliance years.   

Although the possibility of borrowing is not explicitly stated, surrender of allowances for a given compliance period is done after allocation of allowances for the subsequent compliance period takes place.

The use of offset credits will be allowed in the operational phase. 

QUALITATIVE LIMITS: Two types of flexibility instruments are foreseen, both of which will generate offset credits eligible for use under the ETS: offset credits and early action.

Offset credits: SEMARNAT will establish a domestic program for the generation of offset credits that can be surrendered for compliance. Domestic projects that have been validated and verified under internationally or domestically recognized protocols will be eligible. Emission reductions related to all GHGs will be eligible, except for those related to direct CO2 emissions. 

Early action: Offset credits generated by mitigation projects operating in Mexico under recognized protocols before the pilot came into force (2020) can be eligible for use in the ETS.  SEMARNAT issues offset credits only if a certificate of cancellation is presented and if they were not used for other compliance proposes. These projects will be expected to continue generating offset credits during the operational phase.

QUANTITATIVE LIMITS: Participants can meet up to 10% of their compliance obligations with offset or early action credits.

SEMARNAT is currently working on the regulations to implement the offset and early action provisions in the Pilot ETS. The eligibility rules for the use of offset credits within the ETS are being developed based on a mapping of activities and projects that could be used for this purpose. 

Articles 89 and 90 of the General Law of Climate Change provide the general framework for the registry of mitigation outcomes, whereas articles 26-29 of the RENE regulation provide additional specifications on the projects that can be registered, such as the procedure for registration and basic information on which certificates from international registries are to be accepted.

The Mexico ETS is not linked with any other system. However, the General Law of Climate Change provides for linkages with other systems. 

Various cooperation activities have taken place in recent years. Mexico signed a Memorandum of Understanding with California in 2014 and with Québec in 2015 that includes cooperation on emissions trading. In August 2016, Mexico, Québec, and Ontario issued a joint declaration on carbon markets collaboration. Additionally, in December 2017, Mexico – together with four countries and seven sub-national governments – issued the Paris Declaration on Carbon Pricing in the Americas for carbon pricing implementation, which creates a platform for cooperation in the region.

Carbon tax: National carbon tax.
Carbon taxes (state level): Colima, Durango, Guanajuato, Mexico City, Querétaro, San Luis Potosí, State of Mexico, Tamaulipas, Yucatán.

Compliance

Covered entities must surrender one allowance per tCO2 emitted for all their covered emissions.

One calendar year. SEMARNAT is evaluating the surrender date of allowances based on the experience obtained during the pilot.

REPORTING FREQUENCY: Annual self-reporting based on electronic templates prepared by SEMARNAT.

VERIFICATION: Verification by independent accredited verifiers is required by the end of June of the subsequent year.

Reporting and verification should be made according to the criteria and procedures of the RENE.*

FRAMEWORK: A monitoring plan is expected to be required in the operational phase from all regulated entities as a part of their obligations.

Verified annual CO2 emissions are reported both to the RENE (in addition to other obligations that regulated entities have to report to the RENE) and to the ETS registry.

Under RENE, emitters with annual emissions of at least 25,000 tCO₂ in the energy, industrial, transport, agricultural, waste, commercial, and services sectors are required to report the six key GHGs identified by UNFCCC, as well as black carbon, chlorofluorocarbons (CFCs), hydrochlorofluorocarbons (HCFCs), halogenated ethers, halocarbons, and their mixes. Articles 87 and 88 of the General Law of Climate Change provide the general framework for GHG reporting to RENE.


 

* According to SEMARNAT.

The Pilot Program is designed to pose no economic impact on regulated entities; however, non-compliant entities lose the opportunity to bank unused allowances into subsequent compliance periods within the pilot and will receive fewer allowances in the first allocation of the operational phase of the ETS (two fewer allowances for each non-delivered allowance during the pilot).

Sanctions are expected to be implemented in the operational phase of the ETS.

Market Regulation

MARKET PARTICIPATION: Under the pilot rules, market participation is limited to compliance entities and those that provide offset credits. SEMARNAT is designing and developing the process and rules to allow participants without obligations. 

MARKET TYPES: 

Primary: As of the end of 2024, there had been no auctions in the Mexican ETS pilot. SEMARNAT is preparing institutional arrangements to implement auctions during the operational phase. 

Secondary: There is no exchange that trades allowances. As of the end of 2024, transactions can only take place via negotiation between participants.

LEGAL STATUS OF ALLOWANCES: Allowances in the Mexican ETS Pilot are “administrative instruments” and are not considered financial instruments. They are expected to remain as such in the operational phase. 

None

Other Information

SEMARNAT: Ministry in charge of implementing the ETS.

COCOSCE: Formal technical forum for consultation, orientation, social participation, and advice for the Pilot ETS. Its members are representatives from SEMARNAT as well as the ministries of Finance, Energy, and Economy; a representative from the National Institute of Ecology and Climate Change; a representative of the Confederation of Industrial Chambers; a representative from the Coordinating Business Council; and representatives of the regulated sectors.

Article 10 of the Agreement on the establishment of the preliminary basis of the Pilot Program provided for SEMARNAT to annually review the Pilot, publishing reports on topics such as price behavior and emissions reductions achieved. SEMARNAT developed an internal evaluation on the ETS´s components during the Pilot, in order to improve and update the regulation of the operational phase. 

Moreover, an evaluation of the Pilot, supported by the COCOSCE, has been conducted to determine if adjustments to the ETS design are necessary.

COCOSCE’s working groups have developed different recommendations to the Federal Government on the cap and allocation methods, offset credits, as well as key topics on the energy sector and legal recommendations. 

General Law of Climate Change

Agreement on the establishment of the preliminary basis of the Pilot Program of the Emissions Trading System (implementing regulation of the pilot)

Regulation of the General Law of Climate Change on the National Emissions Register

Notice on the cap for the years 2020 and 2021

Notice on the reserve and sectoral allocation of allowances for the years 2020 and 2021

Mexico Emissions Trading System Website

Update to the National Strategy on Climate Change

Strategy of Sustainable Finance Mobilization of the Ministry of Finance

General Organization Manual of SEMARNAT

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