Tieto supports a preventative approach to environmental challenges and a responsible way of conducting business operations. The company is included in several sustainability indices and has also been certified according to international standards.

In 2015, Tieto renewed its commitment to the United Nations Global Compact (UNGC). The UNGC is a strategic policy initiative for businesses that are committed to aligning their operations and strategies with ten universally accepted principles in the areas of human rights, labour, environment and anti-corruption.

Tieto's environmental impact is mainly related to energy consumption (heating, cooling and electricity) for running data centres, offices and other facilities, and to business travel and use of paper and other consumables.

In accordance with the company's environmental management system (EMS), a systematic method is used to identify and evaluate the main environmental aspects. The company's EMS is compliant with ISO 14001. Tieto’s goal is to implement the environmental management system at sites with more than 50 employees and thus receive ISO 14001 certification. The Environmental Rule states that employees are responsible for including environmental awareness and actions in their everyday work. Managers shall ensure that the policy is understood and acted upon within their organizations.

The energy needed for running servers and computers in data centres, including the energy consumed for cooling, accounts for a large part of Tieto's total energy consumption and greenhouse gas emissions. Usually, data centres represent around 30% of the company's total greenhouse gas emissions. Tieto works in a number of ways to improve energy efficiency in the data centres, e.g. by using virtualization and cloud-based solutions. In addition, the company is re-using energy by recycling excess heat from data centre servers to warm up buildings. This solution is currently in use in Tieto’s new-generation data centre in Espoo, Finland, where excess heat is fed back to the local district heating network. In Stockholm, a similar solution is used to warm up the office and nearby buildings.

To reduce greenhouse gas emissions and other environmental impacts, Tieto also aims to cut down travelling as much as possible. The company's travel policy encourages minimizing travel to internal meetings and favouring the use of digital tools such as video and teleconferences or live meetings. In addition, environmentally friendly travel options are to be chosen whenever possible.

To avoid environmental risks in the supply chain and reduce the environmental impacts from purchased goods and services, Tieto is continuing its dialogue with suppliers, subcontractors and partners. The aim is to ensure that they fulfil the high ethical and environmental requirements stated in the company's Supplier Code of Conduct Rule. This code is based on the UNGC and requires having an environmental management system equivalent to ISO 14001 or the Eco-Management and Audit Scheme (EMAS) in place.

As a company, Tieto is concerned about climate change. In 2015, the company’s Board of Directors expressed Tieto’s support for the delivery of the COP 21 (21st Conference of the Parties to the United Nations Framework Convention on Climate Change) through CDP. Tieto strives to integrate sustainability throughout business operations, from both policy and practice perspectives. The company is also engaging in open dialogue about sustainability together with stakeholders. The aim is to lower the environmental impacts of Tieto as a company, its customers, and the supply chain.

During the year, Tieto was recognized for the quality of climate change data it had submitted to the global marketplace through CDP, this year reaching a score of 98 out of 100. Tieto’s score is included in the CDP Climate Change Report 2015 - Nordic natural capital edition. High scores indicate the provision of robust climate data upon which decisions that will catalyze progress towards low carbon economies can be made.

Tieto published its sixth GRI-based Corporate Responsibility (CR) report in 2015. This report, including an overview of Tieto's environmental, social and economic performance during 2014, followed the new Global Reporting Initiative G4 guideline (core level) and was externally assured according to the AA1000 standard. An overview of Tieto's CR performance in 2015 will be published in a separate CR report during spring 2016.