Global CO2 Emissions Expected to Rise to 43.3 Billion Tonnes in 2026 – Solar and Wind Energy Avoid 4.6 Billion Tonnes

Münster – Global CO₂ emissions are expected to rise to 43.3 billion tonnes in 2026. At the same time, emissions from fossil fuels could fall slightly for the first time since 2020. This is according to the Global Carbon Budget 2026, published on Tuesday (November 10, 2026) by the international research consortium Global Carbon Project.

Electricity generation from solar and wind energy is growing worldwide, while coal, oil and gas continue to meet a large share of energy demand. Renewable energy and vehicle electrification are limiting fossil energy consumption. At the same time, higher emissions from land-use change are pushing global CO₂ output upward.

Fossil CO₂ Emissions Could Fall 0.4 Percent in 2026 – Emissions from Oil Decline

According to Global Carbon Project calculations, fossil CO₂ emissions could fall by 0.4 percent to 38.2 billion tonnes in 2026. Emissions from land-use change, by contrast, are expected to rise to 5.1 billion tonnes. Together, this results in global CO₂ emissions of 43.3 billion tonnes.

In 2025, fossil CO₂ emissions had still risen by 1.2 percent to around 38.4 billion tonnes. For 2026, the researchers expect oil emissions to fall by 1.9 percent. According to their analysis, the main reason is the energy shock resulting from the Iran conflict: higher oil prices and supply outages following the closure of the Strait of Hormuz are dampening consumption. Electric vehicles are also contributing to the decline. The researchers expect natural gas emissions to fall by 0.3 percent and coal emissions to rise by 0.6 percent.

The research team forecasts a decline in fossil CO₂ emissions of 0.9 percent for China, 1.3 percent for the United States and 1.5 percent for the EU. An increase of 4.4 percent is expected in India.

The 0.4 percent decline is the central estimate. The forecast range, however, runs from minus 1.5 percent to plus 0.6 percent. Whether fossil emissions will actually fall in 2026 is therefore not yet certain.

Solar and Wind Energy Avoid a Calculated 4.6 Billion Tonnes of CO₂

The expansion of solar and wind energy and electric mobility is slowing the growth of fossil CO₂ emissions. According to a supplementary model analysis conducted as part of the Global Carbon Project, solar and wind energy could avoid a calculated 4.6 billion tonnes of CO₂ in 2026, compared with 4.1 billion tonnes in 2025. This represents an increase of around 12 percent in the calculated avoided CO₂ emissions. In 2010, the figure was around 0.28 billion tonnes.

The calculation is based on the assumption that the energy supplied by solar and wind power would otherwise have been generated from fossil fuels. The CO₂ emissions avoided in this way are already reflected in the reported emissions balance and must not additionally be deducted from total emissions.

Land-Use Change Raises Global CO₂ Emissions

The rise in global CO₂ emissions in 2026 is attributable to higher emissions from land-use change. These more than offset the expected decline in fossil fuel emissions.

The researchers cite peat fires and forest damage in Southeast Asia as the main causes. Drier conditions linked to the El Niño emerging in 2026 are favouring this development. Peat fires release large amounts of previously stored carbon; damaged forests also weigh on the CO₂ balance. For 2027, the researchers expect further effects of El Niño on the global carbon cycle.

COP31: Climate Targets Require Significantly Faster Emission Reductions

The Global Carbon Project’s calculations are being published during the COP31 climate conference, held from November 9 to 20 in Antalya, Turkey. The gap to the climate targets is highlighted by the Emissions Gap Report 2026 of the UN Environment Programme (UNEP).

To limit warming to no more than 1.5 degrees Celsius by 2100, with a probability of around 50 percent, following a temporary overshoot, global greenhouse gas emissions would have to fall by 18 percent by 2030 and by 45 percent by 2035 compared with 2025. Even if national climate contributions were fully implemented, UNEP expects a decline of only 11 to 15 percent by 2035.

According to Global Carbon Project calculations, a remaining CO₂ budget of around 150 billion tonnes will be left from the beginning of 2027 for the 1.5-degree target at a probability of 50 percent. At current emission levels, it would be used up in less than four years.

The growing calculated savings from solar and wind energy demonstrate their increasing contribution to decarbonisation. For a lasting reduction in global emissions, the replacement of fossil fuels in power generation, transport and other applications must be accelerated significantly. At the same time, a substantial reduction in emissions from land-use change is required.

Source: IWR Online, Nov 11 2026