United Internet

United Internet, a German post and telecommunication services provider, reported total carbon emissions of approximately 992.5 million kg CO2e in 2025. This included about 4.2 million kg CO2e from Scope 1 emissions, 65.5 million kg CO2e from Scope 2 (location-based), and 985.5 million kg CO2e from Scope 3 emissions.

In 2024, the company's total emissions were approximately 1.14 billion kg CO2e, comprising around 6.5 million kg CO2e from Scope 1, 75.8 million kg CO2e from Scope 2 (location-based), and 1.13 billion kg CO2e from Scope 3. For 2023, total emissions stood at roughly 1.13 billion kg CO2e, with Scope 1 at about 6.2 million kg CO2e, Scope 2 (location-based) at approximately 64.8 million kg CO2e, and Scope 3 at around 1.12 billion kg CO2e.

United Internet has set a long-term net-zero target to reduce all scopes of emissions by 2045, aligned with the Paris Agreement and the European Climate Act. As an interim target, the company aims for a 55% reduction (5,141 tonnes CO2e) in Scope 1 and Scope 2 emissions by the end of 2030, using a 2023 base year. In 2023, Group-wide Scope 1 and 2 emissions totaled 9,347 tonnes CO2e (6,241 tonnes CO2e Scope 1 and 3,106 tonnes CO2e Scope 2). United Internet also intends to reduce its Scope 1 and 2 emissions to near zero by mid-decade (2025). Furthermore, its subsidiary 1&1 IONOS Holding's data center operations are climate-neutral, utilising renewable electricity and offsetting non-renewable sources. IONOS has also committed as a VMware Zero Carbon Committed Partner to power its data centres with renewable energy by 2030.