Maine Turns to Its Forests to Advance Climate Goals

Maine’s 18 million acres of forest offset at least 60 percent of the US state’s greenhouse gas emissions annually, making forest conservation a critical part of its climate strategy.

With forests absorbing a substantial share of its carbon emissions, Maine is strengthening efforts to protect its vast woodland resources while expanding clean energy and reducing dependence on fossil fuels. The northeastern US state is seeking to make its forests a long-term climate asset without undermining the timber industry and rural livelihoods that depend on them.

Covering approximately 94 percent of the state, forests form the largest unfragmented forest tract in the eastern United States. Their capacity to absorb and store carbon dioxide provides Maine with a significant natural advantage in tackling climate change. However, sustaining this carbon sink requires balancing conservation priorities with commercial forestry, economic development and the growing risks posed by a changing climate. The northeastern US state has approximately 18 million acres of forest, forming the largest unfragmented forest tract in the eastern United States. These forests absorb and store carbon dioxide, offsetting at least 60 percent of Maine’s overall greenhouse gas emissions annually. Their role in climate mitigation has become increasingly important as the state works to reduce emissions while maintaining an economy closely linked to forest resources.

However, managing this natural carbon sink presents a complex challenge. Approximately 94 percent of Maine’s forests are privately owned, meaning that the success of conservation and carbon storage initiatives depends substantially on cooperation among landowners, timber companies, policymakers and environmental stakeholders.

Forests at the Centre of Climate Strategy

Maine’s four-year climate action plan, Maine Won’t Wait, establishes a framework for addressing climate change through four principal priorities – reducing greenhouse gas emissions, strengthening resilience through adaptation, protecting jobs threatened by climate impacts, and expanding clean energy employment while ensuring that rural and other communities benefit from the transition.

The strategy recognises that forests provide more than environmental benefits. They support biodiversity, regulate water cycles, protect soil and sustain livelihoods across rural landscapes. Maintaining their capacity to store carbon while ensuring their long-term ecological health is therefore an important element of the state’s climate ambitions.

The scale of private forest ownership makes collaboration essential. Incentives, conservation programmes and partnerships can encourage landowners to retain forest cover, improve management practices and consider the carbon value of their land alongside its commercial potential.

At the same time, forests cannot be treated as an unlimited substitute for reducing fossil fuel consumption. Their carbon storage capacity depends on forest health, growth, harvesting patterns and vulnerability to disturbances. Climate change itself can threaten this capacity through extreme weather, pests, disease and other ecological pressures.

Balancing Carbon Storage and Economic Interests

Maine’s forestry sector remains a major contributor to its economy. According to the Maine Forest Products Council, the timber industry generated approximately $8.3 billion in economic activity in 2024, equivalent to 3.45 percent of the state’s gross domestic product. The paper and timber industries also supported around 29,000 jobs across all 16 counties.

These figures illustrate the economic importance of maintaining a productive forest landscape. Timber harvesting, paper manufacturing and associated industries depend on continued access to forest resources, creating potential tensions between commercial use and long-term carbon storage.

Expanding forest protection or restricting harvesting in the name of carbon sequestration can also have consequences beyond state boundaries. If timber production shifts to neighbouring states rather than declining, some of the anticipated climate benefits may be lost through the displacement of harvesting and associated emissions.

This challenge highlights the importance of evaluating forest carbon policies at a broader geographic scale. Effective accounting must consider whether carbon storage represents a genuine additional benefit, whether forest protection will endure over time and whether restrictions in one location simply move emissions or harvesting elsewhere.

Carbon Markets and International Cooperation

Carbon markets offer one possible mechanism for financing forest conservation and encouraging emissions reductions. Under these systems, carbon emissions or verified reductions are assigned an economic value, creating incentives for businesses and landowners to adopt lower-carbon practices.

Government-regulated compliance markets can establish formal obligations for polluters, supported by monitoring and enforcement. Voluntary carbon markets, by contrast, allow companies and other organisations to purchase credits associated with claimed emissions reductions or carbon removal. These voluntary systems have faced criticism over inconsistent verification, questionable offsets and the risk that projects may receive credit for carbon benefits that would have occurred anyway.

Forest-based carbon credits require particularly careful assessment because stored carbon can be released through subsequent harvesting, fires or other disturbances. Reliable measurement, transparent reporting and long-term monitoring are necessary to ensure that claimed climate benefits are real and durable.

International coordination could help establish more consistent standards for measuring and verifying carbon storage, while reducing opportunities for double counting and the displacement of emissions between jurisdictions. Such cooperation is important because climate change is a global problem, and the environmental value of a forest cannot be assessed solely within the political boundaries where it grows.

Clean Energy and Reduced Fossil Fuel Dependence

Alongside forest conservation, Maine is seeking to diversify its energy resources and reduce its dependence on fossil fuels. The state’s extensive rural geography means that residents often rely on private vehicles for transportation and heating oil to warm their homes, leaving households exposed to fluctuations in fossil fuel prices.

Expanding renewable electricity, improving energy efficiency and developing cleaner heating and transportation options could help reduce emissions while making energy costs less vulnerable to international fuel-market disruptions.

The transition also offers opportunities to create new employment in clean energy industries and strengthen energy security, provided that infrastructure investments and economic benefits reach rural communities as well as urban centres.

Maine’s experience demonstrates the potential of combining forest stewardship with energy diversification, economic planning and climate adaptation. Its forests provide a substantial natural carbon sink, but their long-term contribution will depend on how effectively the state balances conservation with commercial demands.

Ultimately, forests can play a significant role in climate mitigation, but they cannot replace deep and sustained reductions in fossil fuel emissions. Maine’s approach underscores the need to protect natural carbon stores while accelerating the transition to cleaner energy, supported by credible carbon accounting and cooperation across state and international boundaries.