CO2 emissions reductions by posts correspond to the carbon saved by 31 million solar panels a year

On 18 September 2025, 22 posts worldwide take part in the 7th Green Postal Day, celebrating the contribution of posts to address climate change.

As key players in the transport and logistics sector, postal operators worldwide started to work together in 2008 by launching the Environmental Measurement and Monitoring System (EMMS) and then in 2019 the Sustainability Measurement and Management System (SMMS). Since the beginning of their cooperation, so far, posts have reduced their overall collective CO2 emissions by more than 31 million tonnes1

Holger Winklbauer, IPC CEO commented: “Since the launch of Green Postal Day, climate change has sometimes been overshadowed. Nevertheless, postal operators participating in the IPC Sustainability Measurement and Management System (SMMS) have maintained their focus. They have reduced annual emissions by 40% compared to 20082 and remain committed to achieving a 50% reduction by 2030”. 

Furthermore, 32% of the postal fleet is now composed of alternative-fuel vehicles, of which 26% are electric2 . Hence, posts have reached their 2030 target regarding the electrification of their fleet, five years ahead. About 36% of the electricity used in postal facilities is sourced from renewable energy3

The emissions savings made by the posts are equivalent to:

  • The emissions saved by 31m solar panels a year4, generating enough energy for four million average European homes annually, or nearly 3.5% of the total annual electricity consumption of Germany5.
  • Taking approximately 6.7 million average cars off the road for a year6 
  • The carbon emissions saved by 11,373 onshore wind turbines in one year7.
 

The sustainable use of resources has always been a key priority for the postal sector in order to reduce its environmental impact. The focus is both to ensure that electricity used in postal facilities is sourced from renewable energy and to progressively replace the 600,000 vehicle-postal fleet by alternative fuel vehicles. Through measuring performance in this area, posts are actively contributing to the aims of UN SDG 9 – ‘Industry, innovation and infrastructure.’ 

While posts first focused on reducing their CO2 emissions of last-mile delivery by increasing the number of alternative delivery vehicles, postal attention is now shifting also to long-haul transport. Decarbonising long haul transport will be increasingly crucial to reduce the environmental impact of the sector. Posts are increasingly including electrical vans and trucks in their fleet. Alternative-fuel air freight is also increasingly piloted. Postal efforts also include a more efficient loading and road planning of trucks to reduce the environmental footprint. 

Posts aim to further reduce the 1.57 million tonnes of scope 2 emissions produced from buildings annually. Growing the share of renewable electricity will be crucial to meeting the postal 2030 targets in reducing the carbon intensity of postal operations. This will also include posts generating their own renewable electricity: Solar Energy is being adopted by some posts, and the rate of adoption is expected to increase in the coming years.

Notes:

1. Since the beginning of the SMMS programme in 2008
2. 
SMMS 2024 results
3. 
SMMS 2024 results
4. 
According to multiple sources, including Heatable and Renewable Energy Hub, a typical residential solar panel saves about 1 tonne of CO₂ per year. 31,000,000 tonnes of CO₂ equal to 31 million panels
5. 
The Green Watt
6. 
According to the U.S. Environmental Protection Agency (EPA), the average passenger vehicle emits about 4.6 metric tonnes of CO₂ per year. 31,000,000 tonnes of CO₂ equals to r≈6.74 million cars.
7. 
Calculated on the basis of the average capacity of onshore wind turbines (from USGS and European Wind Energy Association); global average wind turbine capacity factor and a global average from 2024 for the CO2 intensity of electricity generation (from IEA).

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