From dropping HD streams to keeping phones longer: How to cut emissions at home

Scientists at the Royal Society have set out a number of small changes we can make as individuals to cut down on carbon emissions.

They estimate digital technology contributes between 1.4% and 5.9% to global emissions.

So what could each of us do to make a difference? The PA news agency looks at some of the efficiencies highlighted in their report:

1. Stream responsibly

Streaming apps
Standard definition streaming can make a difference (Andrew Matthews/PA)

Switch to SD (standard definition) on a smartphone – the screen is much smaller so you are unlikely to notice the difference from HD or 4K.

Streaming a video in 4K for an hour on a smartphone generates around eight times more emissions than an SD version, the Royal Society’s report said.

2. Don’t upgrade devices too early

It is easy to upgrade a smartphone every two years given this is generally how long most people’s contracts last.

But a handset kept for two years represents about half of all the “embodied emissions” it will generate through its lifetime.

Avoiding the temptation to upgrade everything from laptops to tablets and smart TVs too soon can help cut emissions.

3. Buy second hand

Instead of buying a new device, you could buy a refurbished second-hand product.

Help in this effort by passing on your old kit to someone else if it still works.

4. When you need to upgrade, make sure you recycle

Old TVs and monitors recycled
Be sure to recycle old tech devices (Gareth Fuller/PA)

But of course, everything runs its course eventually – that doesn’t mean you should just leave it in a drawer to gather dust.

The Royal Society said doing this amounts to a form of landfill. Instead search online to find somewhere that will recycle it.

5. Move computing to the cloud

Moving data storage to the cloud presents an opportunity to make energy efficiencies.

Centralised servers can be optimised so they do not consume energy while idle.

6. Get a smart meter

The added insight of electricity and gas consumption from a smart meter not only benefits your wallet but also the environment.

Smart meter
A smart meter saves money and cuts wasted energy (Yui Mok/PA)

“Smart home technologies have the potential to support changes in behaviours and significant emission reductions, for example by identifying how to improve home infrastructures,” the report said.

7. Video conferencing and working from home

Many people who have been working from home during the pandemic have had to use video communication services such as Zoom and Microsoft Teams.

With fewer office workers using transport networks, there has been a drop in travel-linked carbon emissions.

Continuing this beyond the pandemic would continue to keep emissions down.

8. Public transport planning apps

Using apps such as Citymapper and Google Maps when you need to travel can have a positive impact.

These types of app allow us to access information about traffic and congestion in real-time, so users can choose less busy routes and improve emissions caused by congestion.

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