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Green computing: sustainable practices in IT

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We live in an era where environmental sustainability is paramount. That includes IT sector, which faces increasing scrutiny and the attendant reputational risk over its substantial energy consumption and carbon emissions.

The idea behind green computing is that it mitigates the environmental impact of computing activities through energy-efficient practices and sustainable technologies. But what does that mean in practice?

Energy consumption in computing

The energy demands of computing devices vary significantly based on their type and usage. Laptops typically consume between 30 to 70 watts, whereas large desktop and gaming computers can use between 300 to 800 watts. Energyusage.com estimated that operating a computer for eight hours daily result in approximately 12.2 kilowatt-hours of electricity per month, translating to about 146 kilowatt-hours annually.

Carbon footprint of data centers

Data centres, the backbone of our digital infrastructure, are notable contributors to global carbon emissions. Their carbon footprint encompasses both embodied carbon, emissions from the manufacturing of hardware and operational carbon from daily energy use. Efforts to enhance energy efficiency have led to improvements in Power Usage Effectiveness (PUE), a metric assessing data centre efficiency. However, the rapid expansion of data centres continues to pose environmental challenges.

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Understanding green computing

Green computing, also known as green IT, involves the environmentally responsible use of computers and related resources. This encompasses designing energy-efficient hardware, utilising renewable energy sources, and promoting the recyclability of electronic components. The primary objective is to minimise the environmental impact of IT operations throughout the product lifecycle.

Corporate initiatives in reducing emissions

Leading technology companies are actively pursuing strategies to reduce their carbon footprints. Here are just two examples:

  • Lenovo: The company has set ambitious targets to achieve net-zero emissions by 2050. Initiatives include reducing soldering temperatures to lower carbon emissions and utilising ultra-light pallets to decrease shipping weights. These efforts have resulted in a 40% reduction in Scope 1 emissions compared to its 2016 baseline.
  • Acer: Through its Conscious Technology initiative, Acer focuses on developing sustainable products like the Vero series, which incorporates recycled plastics. The company is also expanding into renewable energy solutions, including solar panels and batteries, to support its sustainability goals.

Sustainable practices in IT

Organisations can adopt several sustainable practices to reduce their environmental impact:

  1. Energy-efficient hardware: Investing in devices that consume less power without compromising performance.
  2. Virtualisation: Consolidating multiple virtual machines on a single physical server to optimise resource utilisation and reduce energy consumption.
  3. Cloud computing: Leveraging cloud services to minimise the need for physical infrastructure, thereby reducing energy use and emissions.
  4. Recycling and e-waste management: Implementing programs to recycle electronic waste responsibly, ensuring materials are reused or disposed of in an environmentally friendly manner.
  5. Renewable energy adoption: Powering data centers and offices with renewable energy sources such as solar or wind to decrease reliance on fossil fuels.

Technology’s role in combating climate change

Beyond internal practices, technology plays a crucial role in addressing climate change. Innovations such as advanced analytics, automation, and energy-efficient processes enable organisations to optimise operations and minimize waste.

Further, digital platforms facilitate awareness and education on sustainability, fostering a collective commitment to environmental stewardship.

What you need to next

Clearly, this article can’t hope to provide you with a definite plan on next actions. But here at TechFinitive we have published a lot of articles that cover these things in depth, to help you navigate the confusion.

What IT manufacturers are doing

What data centre companies and hyperscalers are doing

Interviews with key players

Kihara Kimachia
Kihara Kimachia

Kihara Kimachia is a seasoned technology writer and journalist with more than 20 years of experience. He's a contributor at TechFinitive where he covers Enterprise technology and has written for publications such as TechRepublic, eSecurity Planet and The Epoch Times.