This is important as digital storage space has a direct impact on sustainability, be it cloud storage or local storage, because the carbon footprint of data is not insignificant. For example, storing 1GB of data consumes 0.015 of kWh of electricity, and 0.28kg of CO₂ emissions.
To put that more vividly: the electricity required to store around 3,500 emails (of five MB each) produces around as much CO₂ as that from driving a compact car a kilometre and deleting 1,000 emails would give a carbon benefit of around five grams of CO₂.
It Is not only the storage of data that consumes resources, but also data transfer. For example, the process of downloading or transferring 1GB data requires 3kg of CO₂. To make this clearer, here are some other figures: the French television company France Télévisions has calculated that an employee with average email traffic produces as many greenhouse gases every day as generated by an eleven-kilometre car journey.
Taking these figures into consideration, in 2019 German magazine Oekotest even claimed "An email is just as harmful to the climate as a plastic bag”.
When it comes to cleaning up your digital space, you need to consider it in the same way as the physical world. Keeping unwanted or unused things takes up space and consumes unnecessary energy and resources. It can also make it more difficult and time-consuming to find the information you do want.
Here are our top five tips on how to clean up your digital storage and save energy resources: