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National and Corporate Climate Action
From global treaties to balance sheets
The Paris Agreement operates at the level of nations, but the actual emissions reductions must happen in factories, power plants, farms, office buildings, and supply chains. This lesson traces how climate commitments flow from international frameworks through national policies to corporate strategies and individual assets, creating the web of obligations and incentives that shapes climate action in practice.
National Climate Action: The Policy Landscape
Under the Paris Agreement, every country submits a Nationally Determined Contribution (NDC) describing its climate commitments. But NDCs are targets, not policies. The actual policies that deliver emissions reductions are enacted domestically, and they vary enormously in design, ambition, and effectiveness.
IPCC AR6 WGIII Chapter 13 identifies five major categories of national climate policy instruments: regulatory standards (appliance efficiency, vehicle emissions), market-based instruments (carbon taxes, emissions trading schemes), information instruments (disclosure requirements, labeling), government expenditure (subsidies for clean energy, R&D), and voluntary agreements (government-industry cooperation). Most effective national strategies combine multiple instruments, recognizing that different instruments address different market failures and behavioral barriers.
Carbon Pricing: Taxes and Trading Schemes
Carbon pricing is the most discussed market-based policy instrument because it creates a direct economic incentive to reduce emissions across the entire economy. Two main forms exist:
Carbon taxes set a price per tonne of CO₂ and let the market determine the quantity of emissions reductions. They provide price certainty, which aids investment planning. Sweden's carbon tax, introduced in 1991, reached approximately USD 130 per tonne by 2022 and has been associated with significant decoupling of GDP growth from emissions.
Emissions trading schemes (ETS), also called cap-and-trade, set a quantity limit (cap) on total emissions and let the market determine the price. The European Union's Emissions Trading System (EU ETS), the world's largest, covers approximately 40% of EU GHG emissions across power generation, heavy industry, and aviation. The EU ETS price exceeded €100 per tonne in 2023. China launched the world's largest ETS by coverage in 2021, initially focused on the power sector.
Analogy: Parking fees versus parking permits
A carbon tax is like a parking fee: you pay per hour of parking (per tonne of CO₂ emitted), and you decide how long to stay based on the cost. An ETS is like a limited number of parking permits: the city decides how many cars can park total (the cap), and the price of a permit rises or falls based on demand. Both reduce congestion (emissions), but carbon taxes control price while ETS controls volume.
Corporate Climate Action: From Voluntary to Mandatory
Corporate climate action has evolved dramatically over the past decade. In 2010, few major companies had explicit GHG reduction targets. By 2024, the majority of large listed companies in developed markets had some form of climate commitment. This shift has been driven by a combination of regulatory pressure, investor expectations, customer demands, physical risk awareness, and reputational considerations.
Corporate climate action typically involves three interconnected elements: measuring emissions (GHG inventories across Scope 1, 2, and 3), setting targets (including increasingly science-based targets aligned with Paris Agreement pathways), and disclosing progress (through voluntary frameworks like CDP and mandatory regimes like CSRD in the EU and IFRS S2 globally).
| Framework / Standard | Type | What It Requires | Relevance |
|---|---|---|---|
| GHG Protocol | Standard | Methodology for measuring Scope 1, 2, and 3 emissions | Foundational standard used by most corporate reporting |
| Science Based Targets initiative (SBTi) | Target-setting | GHG reduction targets aligned with 1.5°C or well-below-2°C pathways | Gold standard for corporate target credibility |
| TCFD | Disclosure | Governance, strategy, risk management, and metrics for climate-related risks | Basis for many mandatory disclosure regimes |
| IFRS S2 | Mandatory disclosure | Climate-related risks, opportunities, scenario analysis, and GHG emissions | Being adopted globally; requires use of IPCC scenarios |
| EU CSRD / ESRS E1 | Mandatory disclosure | Detailed climate transition plans, Scope 1/2/3 emissions, physical and transition risks | Most detailed mandatory climate reporting framework globally |
The Science Based Targets Initiative
The Science Based Targets initiative (SBTi) provides companies with a methodology and validation process for setting emissions reduction targets consistent with limiting global warming to 1.5°C. "Science-based" means the target is derived from the remaining carbon budget and allocated to the company using an approved sectoral or economic approach, rather than being set arbitrarily.
As of 2024, over 7,000 companies had committed to or set SBTi-validated targets, representing combined annual revenues exceeding USD 60 trillion. SBTi's Corporate Net-Zero Standard requires companies to reduce Scope 1, 2, and 3 emissions by at least 90% by a target year no later than 2050, with interim targets for 2030. The remaining up to 10% of residual emissions should be neutralized through permanent carbon removal.
Cities and Subnational Action
Cities and subnational governments (states, provinces, regions) are critical actors in climate mitigation. They control or influence a substantial share of global emissions through decisions about land use, building codes, transport infrastructure, energy procurement, and waste management. Networks such as the C40 Cities Climate Leadership Group and Under2 Coalition have enabled subnational actors to make and track independent climate commitments, creating political momentum that has sometimes exceeded national ambition.
The IPCC AR6 WGIII notes that urban areas account for approximately 67-72% of global CO₂ emissions from energy and industry (on a consumption basis). This concentration of emissions in cities means that transforming urban energy systems, mobility, and buildings is among the highest-leverage intervention points available.
Corporate transition planning: the EU CSRD requirement
Under the EU Corporate Sustainability Reporting Directive (CSRD), large EU companies and non-EU companies with significant EU revenues must prepare a climate transition plan explaining how their business model is compatible with limiting warming to 1.5°C. This requires setting GHG reduction targets (aligned with SBTi methodology), identifying climate-related risks using IPCC scenarios, and disclosing detailed action plans for each emission source. The CSRD represents the first major mandatory requirement for companies to demonstrate Paris Agreement alignment rather than simply reporting emissions.
As corporate climate commitments have proliferated, so have questions about their credibility. A 2022 analysis by the UN High-Level Expert Group on Net-Zero Commitments found that many corporate net-zero pledges lacked specificity, interim targets, Scope 3 coverage, or credible plans for achieving their stated goals. The term "net zero" in particular has been criticized for allowing companies to rely excessively on offsets rather than genuine emissions reductions.
Standards such as SBTi, the Voluntary Carbon Markets Integrity initiative (VCMI), and the International Carbon Reduction and Offset Alliance (ICROA) are attempting to establish clear criteria for credible climate claims. Regulators in the EU, UK, and Australia have also introduced anti-greenwashing rules that require substantiated evidence for climate claims in marketing and investor communications.
Key Takeaways
- 1National climate policies implement NDC targets through five main instrument types: regulatory standards, market-based pricing, information requirements, public expenditure, and voluntary agreements
- 2Carbon pricing takes two forms: carbon taxes (price certainty, variable quantity) and emissions trading schemes (quantity certainty, variable price)
- 3Corporate climate action now involves measuring Scope 1/2/3 emissions, setting science-based targets aligned with Paris pathways, and disclosing under frameworks like TCFD and IFRS S2
- 4The SBTi provides companies with a validated methodology for aligning targets with the remaining carbon budget; over 7,000 companies have committed by 2024
- 5Cities account for 67-72% of global CO2 emissions on a consumption basis, making urban transformation one of the highest-leverage points in the global mitigation effort