Inside Royal Mail’s Solar Powered Post Boxes
The need for clean energy is urgent - in 2024 the global temperature reached 1.55°C above pre-industrial level, according to the World Meteorological Organization.
Solar energy has made significant advancement in recent years, now being more affordable and efficient making it one of the most accessible solutions for renewable power, according to the World Economic Forum.
Royal Mail has announced that it is releasing 3,500 solar powered postboxes.
This follows from a successful pilot early in 2025, as part of the mail companies plan to make sending, returning and collecting parcels more convenient.
The pilot took place in Hertfordshire and Cambridgeshire and now plans to expand across the UK.
How the new design works
The design will allow customers to send/return parcels that are smaller than a shoebox through the post box, something that has not previously been possible.
The new makeover includes three main redesigns:
- A barcode scanner that will open a drawer that allows parcels larger than a letter to be posted through
- A solar panel that is positioned due south on the box for optimal sunlight, which powers the scanner and drawer
- A separate slot for letters
The project hopes to create a more convenient place for parcels to be returned or sent in a time where online shopping is ever growing.
Jack Clarkson, Managing Director of Out of Home and Commercial Excellence at Royal Mail, said: “We are all sending and returning more parcels than ever before. This trend will only continue as online shopping shows no signs of slowing, particularly with the boom of second-hand marketplaces.
“There are 115,000 postboxes in the UK located within half a mile of 98% of addresses, making them by far the most convenient network of parcel drop-off points in the UK.
“Our message is clear, if you have a Royal Mail label on your parcel, and it fits, put it in a postbox and we’ll do the rest.”
Why the solar panels are important
The IEA says that Solar PV is set to be the largest renewable energy source by 2029.
The modular technology can be manufactured for large plants as well as on a much smaller scale, like powering the royal mail post boxes.
Solar is reported to be easy to and quick to install alongside being a much cheaper alternative to various fossil fuel power technology, according to the World Economic Forum.
This means that the Royal Mail postboxes will be running off 100% clean electricity and won’t be reliant on the grid for its energy.
Matt Gower, Head of ESG at Royal Mail, said: “We've put a huge effort into the design and delivery of our environment strategy so that we continue to be the UK's greenest parcel operator.”
What else is Royal Mail doing to contribute to sustainability aims?
In its 2024-25 Environmental, Social and Governance (ESG) Report the delivery firm announced its commitments and progress, positioning the company as one of the UK’s leading green delivery providers.
The company reported a 25% reduction in overall GHG emissions, deploying roughly 7,000 electric vans, meaning 31% of its delivery fleet create zero emissions.
Royal Mail also transitioned to biofuel, saving an estimated 44,000 tonnes of CO₂e.
The company also powers its estate with 100% renewable electricity, with LED lighting and water saving technologies being distributed across several sites.
Alistair Cochrane, CEO of Royal Mail said: “I’m proud to share our sustainability progress for the year which has once again exceeded our expectations.
“Three years ago, we embarked on our Steps to Zero journey to strengthen our position as the UK’s greenest delivery company for parcels and letters and achieve net zero by 2040.
“Since then, we’ve consistently delivered on our targets.”
