Carbon Markets: Compliance & Voluntary Carbon Forecasts

Carbon markets, both compliance programs that mandate emissions reductions and voluntary markets driven by corporate net-zero commitments, have emerged as a critical dimension of North American energy and environmental strategy. Cap-and-trade allowance prices, voluntary carbon offset prices, and carbon offset crediting under programs like CORSIA have become material financial considerations for energy companies, industrial emitters, fuel producers, and corporations with ESG commitments.

Understanding the trajectory of carbon prices, and the divergent dynamics of compliance versus voluntary markets, is increasingly essential for project finance, corporate sustainability strategy, and risk management. Noreva provides institutional-grade carbon market forecasts covering all major North American compliance programs and key voluntary market segments, built on a fundamentals-aligned modeling framework that integrates regulatory analysis, supply-demand modeling, and AI-powered scenario testing.

Compliance Carbon Markets

Compliance carbon markets are created by government regulation. Cap-and-trade programs set a declining cap on aggregate greenhouse gas emissions from covered sectors, and issue tradable allowances up to that cap. Covered entities, power plants, industrial facilities, fuel suppliers, must surrender one allowance for each metric ton of CO₂ equivalent they emit. The allowance price is determined by the supply-demand balance in each program’s trading market.

California Cap-and-Trade

California’s Cap-and-Trade program (CA-LGC) is the largest and most liquid compliance carbon market in North America, covering roughly 85% of California’s greenhouse gas emissions across power generation, large industrial facilities, and fuel distribution. Administered by the California Air Resources Board (CARB), the program sets a hard cap that declines annually toward California’s 2030 GHG target (a 40% reduction below 1990 levels) and the long-term 2045 carbon neutrality goal. Key features of California’s cap-and-trade include:

The primary instrument traded in California’s cap-and-trade market. CCAs are auctioned quarterly by CARB at a price floor (the auction reserve price), establishing a minimum price signal. CCAs can also be purchased in the secondary market from other covered entities or traded through CARB-registered exchanges.

Price Floor and Ceiling

California’s program includes both an annually escalating auction reserve price (price floor) and a price ceiling (the Allowance Price Containment Reserve, APCR), which limits extreme price spikes. The price corridor narrows the range of uncertainty for compliance cost modeling but does not eliminate it.

Covered entities can use a limited percentage of certified carbon offsets (issued by approved offset protocols) to meet compliance obligations. The availability and price of California-eligible offsets, from forestry, urban forests, mine methane capture, and other projects, creates a parallel market that interacts with CCA prices.

WCI Linkage with Quebec

California’s cap-and-trade is linked with Quebec’s program under the Western Climate Initiative (WCI), creating a unified allowance market with a combined quarterly auction. This linkage affects CCA supply, demand, and price dynamics relative to a standalone California program.

Quebec Cap-and-Trade

Quebec’s cap-and-trade program (QC-LGC) operates within the WCI linkage with California, sharing a common carbon allowance market and quarterly joint auction. Quebec’s program covers power plants, industrial facilities, and fuel distributors, with allowance prices tracking California’s CCA market given the fungibility of allowances across the two jurisdictions.

The CA-QC linkage creates a combined North American compliance carbon market of significant scale, with Canadian industrial emitters and California-linked entities trading in the same allowance pool. For cross-border companies with operations in both jurisdictions, managing the combined compliance obligation requires understanding both the CCA/QC-LGC price trajectory and the regulatory risk of the WCI linkage’s continued operation.

Regional Greenhouse Gas Initiative (RGGI)

The Regional Greenhouse Gas Initiative (RGGI) is a multi-state cap-and-trade program covering CO₂ emissions from power generators in the northeastern and mid-Atlantic United States. Member states currently include Connecticut, Delaware, Maine, Maryland, Massachusetts, New Hampshire, New Jersey, New York, Rhode Island, Vermont, and Virginia. RGGI operates through quarterly allowance auctions, with a single clearing price paid by all winning bidders. RGGI allowance prices are driven by:

Cap Trajectory

RGGI has periodically tightened its aggregate cap through program reviews, with the most recent review (RGGI’s “Program Review 3”) determining the cap trajectory through 2030 and beyond. More aggressive cap reductions increase scarcity and push allowance prices higher.

Power Sector Fuel Mix

As natural gas displaces coal in RGGI-covered power generation, and as renewable energy reduces total fossil fuel combustion, aggregate CO₂ emissions from the covered sector decline, reducing compliance demand and, all else equal, putting downward pressure on allowance prices. Conversely, periods of high natural gas prices can sometimes push generators back toward coal increase emissions and RGGI demand.

Pennsylvania’s Participation

Pennsylvania’s attempted entry into RGGI (subsequently stayed pending legal challenges) is a significant price variable, a state of Pennsylvania’s size joining RGGI would substantially increase compliance demand and allowance prices. Noreva tracks the Pennsylvania RGGI litigation and legislative developments as a key scenario driver in RGGI price forecasts.

Cost Containment Reserve (CCR)

RGGI’s CCR releases additional allowances if the market price exceeds a defined trigger price, capping extreme price spikes. This mechanism limits the upside in RGGI allowance prices but also signals a program committed to predictable cost containment.

North American Compliance Carbon Markets: Summary

Program

Geography

Covered Sectors

Instrument

Price Drivers

California Cap-and-Trade

California

Power, industry, fuel distribution

CCA

Cap trajectory, CARB rulemaking, offset supply, WCI linkage

Quebec Cap-and-Trade

Quebec

Power, industry, fuel distribution

QC-LGC

WCI linkage with California; tracks CCA pricing

RGGI

12 Northeast/Mid-Atlantic states

Power generation only

RGGI Allowance

Cap tightening, PA participation risk, power sector fuel mix

Washington Cap-and-Invest

Washington State

Power, industry, fuel distribution

WA Allowance

Ambitious cap, EV adoption, industrial compliance demand

Washington Cap-and-Invest

Washington State’s Cap-and-Invest program, launched in 2023, is one of the most ambitious compliance carbon programs in North America. Washington’s program covers power generation, large industrial emitters, and transportation fuel suppliers, mirroring California’s broad coverage, and is designed to achieve Washington’s greenhouse gas reduction targets of 45% below 1990 levels by 2030 and 70% below by 2040.

Washington’s allowance prices have been shaped by several factors since launch: the broader market uncertainty around the program’s political durability (following a ballot initiative challenge in 2024), the linkage discussions with California and Quebec, and the rapid pace of renewable energy deployment in the Pacific Northwest that affects power sector emissions. Noreva tracks Washington’s program development closely as a rapidly evolving market with significant long-term upside for allowance prices if the program’s ambition is sustained.

Alberta Tier Offsets

Alberta operates Canada’s oldest carbon pricing system, the Technology Innovation and Emissions Reduction (TIER) regulation, which covers large industrial facilities and generates a market for performance-based emission credits. Alberta TIER offsets represent emission reductions from projects that reduce emissions below a facility’s production-normalized benchmark. Alberta’s carbon market is distinct from the federal pricing backstop and represents a significant compliance carbon instrument for Alberta’s industrial sector, including oil sands operations, power generation, and petrochemicals.

Voluntary Carbon Markets

Voluntary carbon markets allow companies, organizations, and individuals to purchase carbon offsets, certified reductions or removals of greenhouse gas emissions, outside of compliance mandates, for the purpose of meeting net-zero commitments, carbon neutrality claims, or Scope 3 offsetting strategies. The voluntary carbon market (VCM) is substantially larger by transaction count than any single compliance program, but has faced significant credibility challenges and price volatility driven by the diversity of offset quality, verification standards, and buyer expectations.

VCM prices vary significantly by project type, verification standard (Verra VCS, Gold Standard, American Carbon Registry, etc.), vintage, and co-benefit claims. Key segments include:

  • Nature-Based Solutions (NBS): Forest carbon offsets from REDD+ programs (avoided deforestation), afforestation/reforestation projects, and blue carbon (mangrove, seagrass) are among the most traded VCM instruments. NBS offsets have faced scrutiny over permanence risk (forest fires, political instability) and additionality concerns (whether the trees were actually at risk). The integrity of NBS credits is a defining issue in VCM price differentiation.
  • International Nature-Based Avoidance: REDD+ and similar programs specifically covering avoided tropical deforestation represent a large but contested segment of the VCM. Buyer scrutiny of avoidance credit quality has increased significantly following investigative journalism and academic research highlighting inflated impact claims in some programs.
  • Renewable Energy and Methane Avoidance: Clean cookstoves, methane capture from coal mines, agricultural methane avoidance, and industrial energy efficiency projects generate VCM credits that typically trade at a discount to NBS and technology removal credits, reflecting their commodity-like nature.
  • Carbon Removal Credits: Engineered and technological carbon removal, direct air capture (DAC), bioenergy with carbon capture and storage (BECCS), enhanced weathering, and biochar, represent the premium segment of the VCM. Corporates with science-based net-zero targets increasingly differentiate between emission reductions (avoiding future emissions) and removals (extracting existing CO₂), with removals commanding a significant premium.

The Carbon Offsetting and Reduction Scheme for International Aviation (CORSIA), administered by the International Civil Aviation Organization (ICAO), represents a unique compliance-voluntary hybrid market. Airlines participating in CORSIA must offset CO₂ emissions from international flights above a defined baseline, using eligible emission units (EEUs) from approved offset programs.

CORSIA creates institutional-scale demand for eligible carbon offset credits, demand that is distinct from the voluntary buyer market and driven by airline compliance obligations rather than ESG commitments. CORSIA-eligible offset prices trade at a premium to generic VCM credits, reflecting the institutional compliance demand and the stringent eligibility requirements for approved programs. The evolution of CORSIA, from its voluntary Phase 1 (2021 to 2026) through its mandatory Phase 2 (2027 to 2035), represents a growing and predictable demand source for high-quality carbon credits. Noreva tracks ICAO’s CORSIA program reviews, eligible unit supply, and airline compliance trajectories to model CORSIA offset pricing alongside voluntary and compliance carbon market forecasts.

Key Drivers of Carbon Prices: Compliance vs. Voluntary

Carbon Market Price Drivers: Compliance vs. Voluntary

Driver

Compliance Markets (CCA, RGGI, WA)

Voluntary Markets (VCM, CORSIA)

Regulatory ambition

Primary driver, cap tightening directly raises compliance demand

Indirect, more ambitious national targets may drive voluntary demand

Energy sector transitions

Fuel mix changes affect covered sector emissions and allowance demand

Less direct, VCM demand driven more by corporate strategy

Corporate net-zero commitments

Indirect, companies may purchase offsets to supplement compliance

Primary driver, corporate Scope 1/2/3 commitments drive VCM demand

Offset quality and integrity

Relevant for offset use within compliance programs (CCOs in CA)

Dominant factor, credit quality differentials drive large price spreads

Price mechanisms (floors/ceilings)

Most programs have price floor/ceiling mechanisms

No structured price mechanisms; fully market-driven

Political/regulatory risk

High, program survival depends on political durability

Moderate, credibility risk from integrity concerns

Noreva’s Carbon Market Coverage

Noreva provides forward-looking price forecasts for all major North American compliance carbon markets, California CCA, Quebec QC-LGC, RGGI allowances, Washington cap-and-invest allowances, and Alberta TIER offsets. Forecasts are structured as base, low, and high scenarios reflecting cap trajectory uncertainty, political risk, and market supply-demand dynamics. Our carbon market forecasting model integrates regulatory analysis, covered sector emissions modeling, and auction mechanics into a coherent forward price framework.

Noreva’s voluntary carbon market coverage provides price intelligence across key VCM segments, nature-based solutions, avoidance credits, and carbon removal, alongside CORSIA-eligible unit pricing for aviation compliance. Our VCM analysis integrates project pipeline data, verification standard developments, and corporate buyer demand trends to provide credible scenario analysis for the highly fragmented voluntary market.

For corporations managing both compliance and voluntary carbon exposures, particularly energy companies with cap-and-trade obligations and ESG commitments, Noreva provides integrated carbon strategy analysis. This includes modeling the optimal mix of compliance allowance procurement, offset use within compliance programs, and voluntary carbon procurement to meet combined regulatory and corporate targets at minimum cost.

Use Cases: Who Relies on Noreva’s Carbon Forecasts

Power generators, refineries, cement producers, and other heavy emitters covered by California cap-and-trade, RGGI, or Washington’s program require defensible carbon allowance price assumptions for capital allocation, compliance budgeting, and operational planning. Noreva’s compliance carbon forecasts provide the scenario-based forward view that risk managers and CFOs need to quantify carbon cost exposure.

Carbon price assumptions are increasingly material to the investment case for power generation, industrial energy efficiency, and clean fuels projects. A higher carbon price directly increases the competitiveness of low-carbon alternatives to fossil fuel generation. Noreva’s carbon market forecasts support investment thesis development for projects whose economics are sensitive to the trajectory of compliance carbon prices.

Companies with science-based targets and net-zero commitments need forward price assumptions for voluntary carbon credits to budget their offsetting strategy, evaluate the cost of carbon removal versus operational decarbonization, and plan their CORSIA obligations if they operate corporate aviation. Noreva’s VCM analysis provides the intelligence needed to build credible, cost-efficient carbon neutrality roadmaps.

As carbon disclosure requirements tighten, through SEC climate disclosure rules, IFRS S2, and the EU CSRD, sustainability teams need credible carbon price scenarios for Scope 1, 2, and 3 emissions valuation, climate risk reporting, and internal carbon pricing programs. Noreva’s compliance and voluntary carbon market forecasts support the financial quantification of climate risk and opportunity required by these disclosure frameworks.

Producers of fuels generating both LCFS credits and California CCOs for offset use, such as dairy RNG projects approved under CARB’s Compliance Offset Protocol for Livestock Operations, must understand the interaction between LCFS credit pricing and California cap-and-trade dynamics. Noreva provides integrated analysis of both markets, covering the combined revenue stack and the policy risks that affect each instrument independently.

Carbon Markets: Key Concepts

  • Cap-and-trade systems, regulatory frameworks that set a declining cap on aggregate GHG emissions and allow covered entities to trade emission allowances.
  • California Cap-and-Trade (CA-LGC), California’s compliance carbon program; the most liquid cap-and-trade market in North America, links with Quebec under the WCI.
  • California Carbon Allowance (CCA), the tradeable compliance instrument in California’s cap-and-trade program, each representing the right to emit one metric ton of CO₂ equivalent.
  • California Carbon Offset (CCO), certified offset credits that covered entities can use (within limits) to meet California cap-and-trade compliance obligations.
  • Regional Greenhouse Gas Initiative (RGGI), the multi-state cap-and-trade program covering power sector CO₂ in the northeastern US.
  • Washington Cap-and-Invest, Washington State’s economy-wide cap-and-trade program, launched in 2023, among the most ambitious compliance carbon programs in North America.
  • Quebec Cap-and-Trade (QC-LGC), Quebec’s cap-and-trade program, linked with California under the WCI.
  • Nature-Based Solutions (NBS), forest carbon and ecosystem offsets representing the largest segment of the voluntary carbon market.
  • CORSIA, the ICAO international aviation carbon offsetting program, creating compliance demand for high-quality offset credits from airlines.
  • Carbon market forecasting model, Noreva’s proprietary framework for projecting compliance and voluntary carbon prices across North American programs.
  • California Air Resources Board (CARB), the agency administering California’s cap-and-trade and LCFS programs, whose rulemaking drives the most liquid compliance carbon market in North America.

Frequently Asked Questions: Carbon Markets

Compliance carbon markets are created by regulation, covered entities must surrender allowances or offsets to meet legally enforceable emission reduction obligations. Prices are anchored by the supply cap set by regulators and the compliance demand from covered entities. Voluntary carbon markets operate outside regulatory mandates, driven by corporate net-zero commitments and ESG strategies. There are no mandatory buyers in the VCM, demand depends entirely on voluntary corporate commitment, which makes VCM prices more volatile and subject to credibility risk than compliance markets.

California’s cap-and-trade (CCA) and LCFS are distinct compliance programs covering overlapping but not identical entities and activities. Fuel distributors are subject to both programs, they must hold CCAs for the covered emissions from the fuels they sell, and they must also meet the LCFS CI benchmark for their fuel mix. The two markets are structurally linked because low-carbon fuels that reduce LCFS deficits also tend to reduce covered sector GHG emissions, affecting CCA demand. However, CCA and LCFS credit prices are driven by different supply-demand mechanisms and trade in separate markets. Noreva provides integrated analysis of both markets for clients managing dual compliance exposure.

The voluntary carbon market’s price volatility reflects the absence of regulatory price anchors, the heterogeneity of offset quality across thousands of projects and multiple verification standards, and the sensitivity of buyer demand to credibility concerns. High-profile investigations in 2023 to 2024 raised serious questions about the additionality and permanence of some major VCM projects, particularly in the forest carbon segment, triggering a de-risking by institutional corporate buyers and suppressing prices across many VCM segments. The market has since bifurcated, with premium prices for high-integrity, verified removal credits and depressed prices for older or lower-quality avoidance offsets.

CORSIA is the International Civil Aviation Organization’s global scheme for offsetting international aviation emissions above a 2019 to 2020 baseline. It requires airlines to purchase approved emission units (EEUs), high-quality carbon offsets meeting ICAO’s eligibility criteria, to offset their covered emissions growth. CORSIA matters for carbon markets because it creates a predictable, scaled institutional demand for eligible offset credits, which supports prices for CORSIA-eligible instruments above generic VCM levels. As CORSIA moves from voluntary (Phase 1) to mandatory (Phase 2 from 2027), its impact on offset credit demand and pricing will increase materially.

Noreva’s compliance carbon price forecasts are built on a program-specific supply-demand framework: we model the annual allowance supply (determined by the cap and any containment reserve releases), aggregate covered sector emissions (driven by power sector fuel mix, industrial output, and fuel consumption trajectories), and the price floor/ceiling mechanisms specific to each program. Policy scenario analysis captures the risk of cap tightening, program expansion, offset limit changes, and political sustainability challenges. Our carbon market forecasting model ensures that each program’s unique market design is reflected in the forward price trajectory.

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Access Noreva’s Carbon Market Forecasts

Noreva’s carbon market datasets, covering California CCA, RGGI, Quebec QC-LGC, Washington cap-and-invest, Alberta TIER, and voluntary carbon market segments including CORSIA, are available through the Environmental Attribute Pricing Data Service and Carbon Market Intelligence product suites.

To learn how Noreva’s carbon market forecasts can support your compliance strategy, investment decisions, or ESG reporting, book a demo with our team. For the broader environmental attribute landscape, see the Environmental Attributes hub.