Üstra CO2 emissions fall to record 9.3 grams per passenger-kilometer in 2025

• üstra reported 2025 CO2 emissions of 9.3 grams per passenger-kilometer for city buses and light rail, its first sub-10g result.
• Emissions fell 84% from 56.9 g in 2011, supported by CO2-free electricity used since 2015 and fleet modernization.
• Light-rail regenerative braking fed 44.2 million kWh back into the grid; TW 2000 and TW 3000 units recovered about 51% of energy used.
• Bus emissions intensity dropped to 53 g per passenger-kilometer from 102 g in 2021; new-car emissions averaged 105.8 g per km in Germany.

Disclaimer: This news brief was created by Public Technologies (PUBT) using generative artificial intelligence. While PUBT strives to provide accurate and timely information, this AI-generated content is for informational purposes only and should not be interpreted as financial, investment, or legal advice. üstra Hannoversche Verkehrsbetriebe AG published the original content used to generate this news brief on July 30, 2026, and is solely responsible for the information contained therein.