Together, we will build the world’s best city – a green and vibrant capital that cares for both people and nature. In Oslo, it should always pay off to live environmentally friendly.

We will make climate-friendly travels easier, use energy in smarter ways, and develop the city with green and blue structures that connect nature and urban life. Oslo is leading the way towards a climate-resilient zero-emission society. The Climate Budget is the city of Oslo’s governance tool for achieving Oslo’s climate goals.

The Climate Budget presents measures to be implemented during the 2026–2029 economic planning period. Responsibility for implementation is assigned to municipal entities, which report annually, except for direct emissions, which are reported alongside the municipality’s financial reporting. The Climate Budget consists of four chapters that correspond to Oslo’s five climate goals. Each part specifies which measures are to be implemented in the 2026–2029 economic planning period to help reach Oslo’s climate targets towards 2030. It also presents new budget allocations for climate initiatives.

In addition, the Climate Budget presents identified measures that could strengthen Oslo’s climate efforts if adopted in later climate budgets. These are not currently proposed for implementation but illustrate possible future measures that could help achieve higher emission-reduction results.

More detailed information about the Climate Budget’s methodology can be found in Attachment to the Climate Budget 2026.

Key achievements in 2025

Final investment decision for carbon capture at the waste-to-energy plant at Klemetsrud was secured in January 2025. Construction will continue over the next few years, with operations scheduled to start in the third quarter of 2029. This plant is currently Oslo’s largest single source of emissions, which will be almost entirely eliminated (approximately 90% ) once full operation begins.

Municipalities now have clear legal authority to require zero-emission construction sites from both private and state actors, something Oslo has long advocated. Based on this legal authority, the City Government issued a public consultation in September 2025 on a local regulation proposing that large construction sites must gradually adopt zero-emission or biogas-powered machinery leading up to 2030. The local regulation must be adopted by the City Council.

Further emission cuts are expected from commercial transport, both because Oslo is closer to establishing a zero-emission zone and because zero-emission vans may soon gain access to bus lanes. Both initiatives have been long-term targets for the City Government, though final approval depends on national authorities.

Oslo is a Zero-Emission City in 2030

Direct emissions are emissions that occur within the municipality’s geographical boundaries, so called Scope 1 emissions. By 2030, Oslo aim to reduce its direct emissions by 95% compared with 2009 levels.

Greenhouse gas emissions in Oslo were reduced by 30% from 2009 to 2023, according to the latest greenhouse gas emissions inventory from the Norwegian Environment Agency. The largest contributors to these emissions are the shift to electric vehicles, the use of biofuels, and the transition from oil-fired heating to zero-emission heating. The emission reduction since 2009 is probably underestimated, partly because the effects of Oslo’s measures targeting road traffic and other mobile combustion are not adequately captured in the Norwegian Environment Agency’s greenhouse gas emissions inventory.

Adopted Measures

With the adopted measures in this Climate Budget, Oslo is estimated to reduce its emissions by 70% in 2030. The largest measure is the implementation of carbon capture at Klemetsrud.

The adopted measures in this Climate Budget are estimated to reduce greenhouse gas emissions within Oslo’s boundaries by 75,600 tons of CO₂ equivalents in 2026 and 206,100 tons of CO₂ equivalents in 2029.

The table below presents the adopted measures in the Climate Budget 2026. Here, you can also filter by the municipal entities responsible for the individual measures.

Adopted measures to reduce emissions within Oslo's boundaries

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New Allocations to Reduce Direct Emissions

In the 2026 budget, NOK 206.5 million is allocated on the operating budget and NOK 26 million on the investment budget for new or strengthened measures that contribute to reducing direct greenhouse gas emissions, as shown in the tables below.

New allocations for measures with climate effect on direct emissions on the operating budget

91

New allocations for measures with climate effect on direct emssions on the investment budget

92

Identified Measures

The table below shows potential new measures that could be implemented to reduce direct emissions by up to 81% in 2030. The identified measures have not been politically decided at either the local or national level, and some require new national clarifications, new legal authorizations, or similar. The measures are not necessarily fully assessed, and their final design will need further evaluation.

Identified measures to reduce direct emissions

93

Towards Sustainable Consumption

In Oslo, we primarily consume goods produced outside the municipality, meaning that the majority of our climate footprint comes from emissions that occur elsewhere (indirect emissions). This also applies to the city of Oslo as an organisation, which provides a wide range of public services to the city’s residents.

Reducing the climate footprint of the city of Oslo’s own operations is therefore highly important. At the same time, this can help promote a more circular economy in the city and the wider region, through the municipality’s direct contracts and cooperation with the business sector.

Adopted Measures

In 2026, Oslo municipality will assess a new location and business model for a reuse centre for construction materials, as part of Oslo’s circular infrastructure. The municipality will also consider the possibility of centralised ownership and management of municipal PCs. The aim is to extend their service life, which could result in cost savings of NOK 45.5 million and annual emission reductions of around 1,700 tons CO₂ equivalent.

The table below presents the adopted measures in the Climate Budget 2026. Here, you can also filter by the municipal entities responsible for the individual measures.

Adopted measures for a more circular economy and reduction of emissions outside Oslo’s boundaries (indirect emissions)

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Identified Measures

The table below shows potential new measures that could be implemented in Oslo to support a more circular economy and further reduce indirect emissions.

The identified measures have not been politically decided at either the local or national level, and some require new national clarifications, new legal authorizations, or similar. The measures are not necessarily fully assessed, and their final design will need further evaluation.

Among the identified measures, setting requirements to reduce emissions from materials will have the greatest impact on emission reductions. A large share of these reductions will also support a more circular economy in the construction sector, through reduced material use, reuse, increased renovation, and material recycling.

Identified measures for a more circular economy and reduced indirect emissions

95

An Energy System Adapted to the Zero-Emission City

A robust, flexible, and zero-emission energy system is a prerequisite for Oslo to achieve its goal of becoming a zero-emission city. Since 2009, total energy consumption in Oslo has decreased by 10%. This is largely due to the electrification of the passenger car fleet (electric motors have higher efficiency than combustion engines, thereby reducing energy consumption per vehicle), the phasing out of oil for heating, and more energy-efficient buildings.

Adopted Measures

To achieve the goal of a 95% emission reduction, we must ensure sufficient capacity in the power grid. The future total power demand for the electrification of heavy transport and the construction sector is estimated at around 100 MW. Adopted measures in the Climate Budget 2026 are estimated to make 11 MW of capacity available.

The table below presents the adopted measures in the Climate Budget 2026. Here, you can also filter by the municipal entities responsible for the individual measures.

Adopted measures for energy

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Identified Measures

Although the goal for reduced energy consumption is within reach, additional measures are needed to ensure that Oslo has sufficient energy and capacity to achieve the climate goal of 95% emission reduction. The table below provides an overview of identified measures that could contribute to this.

The identified measures have not been politically decided at either the local or national level, and some require new national clarifications, new legal authorizations, or similar. The measures are not necessarily fully assessed, and their final design will need further evaluation.

The most important identified measure is to require local energy production and shared energy solutions in zoning plans. This will facilitate the development of effective energy systems that help reduce energy demand and peak loads, while also increasing local energy production.

Identified measures for energy

97

Oslo is a Climate-Resilient City with Increased Carbon Uptake and Storage

Oslo aims to become a climate-resilient city, meaning that the city’s ability to withstand climate change will be strengthened by 2030, and it will be developed to cope with the changes expected by 2100. Oslo must be able to endure and manage a warmer and wetter climate.

To become a climate-resilient city, we must stay ahead of climate change. Oslo has made significant progress in managing stormwater, which must remain a high priority moving forward. Work is now underway to ensure Oslo can handle the broader range of risks posed by climate change. In addition to climate-resilient infrastructure and climate-adapted emergency preparedness, a climate-resilient and diverse natural environment plays a central role in enabling the city to withstand climate change.

Climate-resilient forests and other vegetation absorb and store carbon. Oslo’s ambitions for low-impact logging are important in this context. It is also crucial to limit the development of carbon-rich areas, which are found in the forest areas (marka), built-up zones, and the fjord. Increased knowledge about these carbon stores is essential.

Adopted Measures

With the adopted measures in the Climate Budget, efforts to establish a coherent floodway and stormwater retention network will be strengthened, Oslo’s forestry practices can become more nature-friendly, including on forest land not owned by the municipality, and work to make Oslo a land-use neutral municipality will be initiated.

Together, this will strengthen Oslo’s efforts to become a climate-resilient city that safeguards natural carbon stocks.

The table below presents the adopted measures in the Climate Budget 2026. Here, you can also filter by the municipal entities responsible for the individual measures.

Adopted measures for climate adaptation and natural carbon storage

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New Allocations for Climate Adaptation and Increased Natural Carbon Storage

In the 2026 budget, NOK 50.8 million has been allocated to new or strengthened measures that contribute to climate adaptation and natural carbon storage, as shown in the tables below.

New allocations for measures for climate adaptation and natural carbon storage in the investment budget

99

Identified Measures

The table below shows identified measures that could be implemented to strengthen efforts on climate adaptation and natural carbon storage in Oslo. The identified measures have not been politically decided at either the local or national level, and some require new national clarifications, new legal authorizations, or similar. The measures are not necessarily fully assessed, and their final design will need further evaluation.

The most important identified measures are improved consideration of climate adaptation in land-use planning and the introduction of a requirement for land-use neutrality.

Identified measures for climate adaptation and increased natural carbon storage

100