Climate and environment

As a forerunner in sustainable infrastructure construction, GRK aims to be net zero for its own carbon dioxide emissions by 2035

The construction and transport sectors have a major role to play in the battle against climate change and biodiversity loss.

GRK builds infrastructure that meets customers’ requirements and users’ needs, while reducing its life-cycle environmental impact.

Our activities have a long-lasting impact on the surrounding society, as the lifespan of infrastructure can be dozens or even hundreds of years. We are actively developing more resource-efficient solutions and low-carbon materials. We also invest on rail construction and our environmental services, providing circular economy services to our broad customer base.

Every day, we take concrete and clear actions to promote sustainable construction. CO₂ emissions from infrastructure are mainly due to the materials and fuels used in construction, and, to a lower extent, energy consumption during the lifespan of the product.

Emissions can be reduced by using recycled materials, renewable fuels and ensuring appropriate recycling of soil, aggregates and waste. Emission reductions are also achieved by optimising the logistics of soil and aggregate transports and reducing material wastage.

Carbon footprint

In infrastructure construction, carbon footprint calculation is important as it helps identify the main sources of emissions and find ways to reduce them. The carbon footprint refers to the total amount of greenhouse gas emissions over the life cycle of infrastructure construction, arising from, among other things, the extraction of raw materials, material production, construction activities, transportation, and waste management.

GRK’s carbon footprint has been calculated for the entire Group in 2025. The accounting takes into consideration Scope 1 and 2 emissions of the Greenhouse Gas Protocol (GHG).

Scope 1 and Scope 2 emissions

The carbon footprint of own operations covers Scope 1 and Scope 2 emissions. Our carbon footprint was 17,860 t CO2 eq in 2025 (19,859 t CO2 eq.). Our carbon intensity, which takes into account the growth in revenue, was 20.5 (27.3) t CO2 eq/M€ in 2025.

The use of fuels was further developed towards lower-carbon alternatives. In 2025, we used 1,288,359 litres of renewable fuels, accounting for 27% of total fuel consumption.

The share of renewable electricity procured by GRK increased to 93%, supporting our target to achieve net zero emissions from our own operations by 2035. At the same time, we continuously improve the energy efficiency of worksites and machinery and explore fossil-free fuel alternatives.

Scope 3 emissions

Scope 3 emissions describe indirect emissions resulting from GRK’s operations but occurring in our value chain. By far the largest share of GRK’s climate impacts arises from the production of materials and services used in our value chain. In 2025, our total Scope 3 emissions amounted to 316,350 t CO₂e. In 2025, we expanded our emissions calculations for the value chain to cover all material Scope 3 categories. We will continue to develop our calculations as we progress towards our goal of setting SBTi-approved climate targets and ensuring transparent emissions management.

Circular economy

Our use of recycled materials increased in 2025 to 882,045 (608,487) tonnes. We continuously seek new ways and opportunities to increase the use of recycled materials in our operations, progressing towards the Green Deal target of increasing the use of recycled materials to 1.5 million tonnes by 2035. The growth in the use of recycled materials is enabled by our extensive circular economy business network and the active approach of our worksites in utilizing recycled materials.

Currently, GRK’s network consists of 19 operating locations. At these locations, we receive, process, and utilize surplus soils and various recycled materials such as concrete, ash, slag, and tyres. The use of recycled materials replaces the use of virgin materials, which has a significant positive impact on biodiversity and the management of harmful climate emissions.

In 2025, we expanded our circular economy business facility network to seven new locations through an acquisition. The expansion of the facilities enables broader reception, processing, and utilization of materials. This increases the volume of recycled materials replacing virgin materials in our operations and in the market, thereby reducing our climate impacts.