Can Harvard-MIT Unite Trade and Carbon Pricing for Climate?

Climate policy sits at the crossroads of trade, development and environmental action.

Taking advantage of this position has never been more vital, as a report from the Global Climate Policy Project, a joint initiative between Harvard University and the Massachusetts Institute of Technology (MIT), lays out a detailed framework to connect these strands.

The report, Building a Climate Coalition: Aligning Carbon Pricing, Trade and Development, outlines how global cooperation can support a low-carbon transition while safeguarding economic stability and social equity.

It opens with a clear premise: emissions are unequally distributed, but climate impacts are felt hardest by those least equipped to respond.

Industrialised countries produce the bulk of global emissions, but the brunt of climate damage falls on lower-income nations. This sets the stage for a key message - high-income countries must lead on emissions cuts, support adaptation efforts and facilitate technology transfer.

At the core of the report is a focus on carbon pricing. By setting a cost on emissions, governments can nudge industries towards cleaner alternatives. Carbon pricing also creates a level playing field in international trade when applied consistently.

However, the authors stress that it needs global coordination to avoid fragmentation.

“We build on two important facts, more than 80% of emissions in the steel, cement, aluminium and fertilisers industries are already covered by existing or planned carbon pricing systems,” writes Catherine Wolfram, William Barton Rogers Professor of Energy Economics at MIT, on LinkedIn.

“And, these industries account for more than 20% of global carbon emissions.”

By targeting these high-emitting sectors early, the report sees potential to align trade and climate strategies.

Carbon border adjustments - fees on imported goods based on their carbon content - are already under discussion in some countries. Without coordination, these mechanisms risk sparking trade disputes.

The coalition model put forward by the report argues for mutual agreements that avoid confrontation and promote shared standards.

Climate resilience starts with supply chains

Trade and supply chains are central to this climate conversation. When carbon prices vary across borders, it can distort competition and disrupt production. The report proposes international frameworks that align policies across countries to avoid these distortions.

Steel, cement, aluminium and fertilisers are not only carbon-intensive but also globally traded. Inconsistent carbon rules can shift emissions from one country to another - a phenomenon known as "carbon leakage". To prevent this, the report calls for cooperation that links carbon pricing with trade measures.

It also sees opportunities in transforming supply chains to make them more resilient and climate-aligned. Technologies like green hydrogen and energy storage are not just emissions solutions, but future trade commodities. Scaling these industries could create new export sectors while reducing reliance on fossil-based materials.

Policy consistency is key. Long-term signals from governments help companies plan investments, shift sourcing strategies and adapt logistics. The report argues that certainty in carbon policy gives companies the confidence to reshape their operations, integrate cleaner inputs and reduce transport emissions.

Supply chain transparency is also flagged. Digital monitoring tools allow tracking emissions through the entire lifecycle of a product—from raw materials to finished goods. These systems can form the basis for carbon-based labelling or customs rules, turning emissions data into a tool for fairer trade.

Fairness and finance

For this strategy to work, equity cannot be an afterthought. The report dedicates considerable attention to ensuring that climate action includes vulnerable and marginalised communities. Without representation, policies risk missing the realities on the ground or reinforcing inequalities.

The coalition model is built on inclusive participation. This means ensuring that the poorest regions, often most exposed to climate shocks, have a seat at the table. The report argues that when communities are part of the process, the resulting policies are more legitimate, and more likely to succeed.

Access to finance is another sticking point. The transition to a low-carbon economy requires upfront investment—in clean energy, new technologies, education and skills.

Without targeted support, low-income countries may fall further behind. The report supports climate finance mechanisms that allocate funds fairly and support long-term resilience.

“With COP30 in Brazil on the horizon and Brazil making this a signature initiative, the moment is ripe for countries to move from fragmented carbon border adjustments to a cooperative framework that advances climate, trade and development together,” writes Catherine on LinkedIn.

This ties together a central thread of the report: cooperation builds trust. It sees transparent goals, shared progress tracking and regular updates as essential. Without these, climate policy risks becoming reactive, divisive or disconnected from economic realities.

A coalition model for climate, trade and development

The final section of the report reinforces a simple idea - climate policy should not be seen as a constraint but as a chance to build something better.

Acting early avoids steep long-term costs. Cleaner air, more stable energy supplies and jobs in green sectors are some of the benefits listed.

However, these outcomes depend on action, not intention. The report warns that climate ambition must be backed by delivery—measurable outcomes, consistent investment and a shared sense of responsibility.

The coalition model is positioned as a practical path forward. It aligns carbon pricing, trade frameworks and development goals into a single coordinated effort.