Smartphones & Energy

Here’s an article about a way to save money – at a personal scale – while helping our planet … at a macro scale.

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Smartphones Are Killing The Planet

Faster Than Anyone


 Researchers are sounding the alarm after an analysis

showed that buying a new smartphone consumes as much

energy as using an existing phone for an entire decade.


By Mark Wilson




Before you upgrade your next iPhone, you may want to consider a $29 battery instead. Not only will the choice save you money, it could help save the planet.

A new study from researchers at McMaster University published in the Journal of Cleaner Production analyzed the carbon impact of the whole Information and Communication Industry (ICT) from around 2010-2020, including PCs, laptops, monitors, smartphones, and servers. They found remarkably bad news.

Even as the world shifts away from giant tower PCs toward tiny, energy-sipping phones, the overall environmental impact of technology is only getting worse. Whereas ICT represented 1% of the carbon footprint in 2007, it’s already about tripled, and is on its way to exceed 14% by 2040. That’s half as large as the carbon impact of the entire transportation industry.

Smartphones are particularly insidious for a few reasons. With a two-year average life cycle, they’re more or less disposable. The problem is that building a new smartphone – and specifically, mining the rare materials inside them – represents 85% to 95% of the device’s total CO2 emissions for two years. That means buying one new phone takes as much energy as recharging and operating a smartphone for an entire decade.

Yet even as people are now buying phones less often, consumer electronics companies are attempting to make up for lost profits by selling bigger, fancier phones.

The researchers found that smartphones with larger screens have a measurably worse carbon footprint than their smaller ancestors. Apple has publicly disclosed that building an iPhone 7 Plus creates roughly 10% more CO2 than the iPhone 6s, but an iPhone 7 standard creates roughly 10% less than a 6s. So according to Apple, the trend is getting better, but the bigger phones companies like Apple sell seem to offset some gains.

Another independent study concluded that the iPhone 6s created 57% more CO2 than the iPhone 4s. And despite the recycling programs run by Apple and others, “based on our research and other sources, currently less than 1% of smartphones are being recycled,” Lotfi Belkhir, the study’s lead author, tells me.

In any case, keeping a smartphone for even three years instead of two can make a considerable impact to your own carbon footprint, simply because no one has to mine the rare materials for a phone you already own. It’s a humbling environmental takeaway, especially if you own Samsung or Apple stock. Much like buying a used gasoline-fueled car is actually better for the environment than purchasing a new Prius or Tesla, keeping your old phone is greener than upgrading to any new one.

Smartphones represent a fast-growing segment of ICT, but the overall largest culprit with regards to CO2 emissions belongs to servers and data centers themselves, which will represent 45% of ICT emissions by 2020. That’s because every Google search, every Facebook refresh, and every dumb Tweet we post requires a computer somewhere to calculate it all in the cloud. (The numbers could soon be even worse, depending on how popular cryptocurrencies get.)

Here, the smartphone strikes again. The researchers point out that mobile apps actually reinforce our need for these 24/7 servers in a self-perpetuating energy-hogging cycle. More phones require more servers. And with all this wireless information in the cloud, of course we’re going to buy more phones capable of running even better apps.

As for what can be done on the server end, Belkhir suggests that government policies and taxes might make a difference – whatever needs to be done to get these servers migrated over to renewable energy sources.

Google, Facebook, and Apple have all pledged to move to 100% renewable energy in their own operations. In fact, all of Apple’s servers are currently run on renewable power.  Says Belkhir of these early corporate efforts:


“It’s encouraging. But I don’t

think it’d move the needle at all.”


If this all sounds like bad news, it’s because it absolutely is bad news.

To make matters worse, the researchers calculated some of their conclusions conservatively. The future will only get more dire if the internet of things takes off and many more devices are hitting up the cloud for data.  The team writes in the study:


“We are already witnessing internet-enabled

devices, ranging from the smallest form

factor such as wearable devices, to

home appliances, and even cars,

trucks and airplanes.


“If this trend continues . . . one can

only wonder on the additional load

these devices will have on the net-

working and data center infrastruc-

tures, in addition to the incremental

energy consumption incurred

by their production.


“Unless the supporting infrastructure

moves quickly to 100% renewable

power, the emergence of IoT could

potentially dwarf the contribution of

all the other traditional computing

devices, and dramatically increase

the overall global emissions well

beyond the projections of this study.”


Indeed, tech’s carbon footprint is beyond what any one designer, one company, or even one government regulator can contain. As consumers, we have more reason than ever to hesitate when it comes to our next shiny tech splurge. The bottom line is that we need to buy less, and engage less, for the health of this entire planet.

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The message is: Every time you think you need to replace something, ask yourself if you really need to replace it or can it be fixed, repaired, or – in the case of a cell phone – supplied with a new battery.

We throw away so much, and that, in itself, is detrimental to the Earth.

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In case you haven’t yet done so, here’s the hyperlink for downloading my new sustainability book.

We’re getting great feedback, about how many people have been downloading and reading the book – and – how many people to whom they’re also sending that same pdf.  It’ll take many of us to cause the positive change we’re needing towards sustainable living.




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