Environment IdeaEver increasing data traffic results in a rise in energy use. This energy consumption represents A1 Telekom Austria Group’s most significant environmental impact. This is why A1 Telekom Austria Group relies on reducing its consumption, increasing its energy efficiency and utilising sources of renewable energy. The A1 Telekom Austria Group has been able to steadily increase energy efficiency in recent years.

All in all, the A1 Telekom Austria Group improved its energy efficiency by 24 % between 2017 and 2018.

Energy-efficient technology and intelligent cooling methods


The A1 Telekom Austria Group aims at optimising its energy efficiency despite steadily increasing data traffic. The cooling of technical equipment in data centres consumes large amounts of power but is at the same time indispensable for fail-safe operation. A stable operating temperature in data centers is an important prerequisite.

In this area, innovative cooling concepts (cold aisle containment, hot-spot extraction, hybrid ventilation systems, heat recovery systems) can be used to reduce power demand by up to 75 % compared to conventional cooling systems.

The gradual increase of permissible room temperatures in mobile communication base stations across the Group also saves electricity. At the A1 Telekom Austria Groups subsidiaries average temperature is steadily increased from 22° C to 29° C. As a result, less cooling power is needed, which has led to a saving of electricity.

Combined Annual Report

Digital Transformation

Online Report


Petra Gallaun

Irene Perl

Head of CSR
A1 Telekom Austria Group