What defines a green data center?

What defines a green data center?

With each passing year, more organizations seek out green service providers. Both for the sake of reducing overhead and as a reflection of corporate environmental responsibility (CER) values. Data centers, though indispensable to organizations in every conceivable industry, are voracious energy consumers. This fact has generated interest in sustainable facilities – which raises an important question: What is a green data center?

Green data centers an illusion?

Globally, data centers consume around 3% of the total energy generated and that amount increases every day. The carbon footprint of a medium 10MW data center can range from 3.000.000 to over 130.000.000 KG of CO2. Reducing that carbon footprint through efficiency and renewable energy use has an immense effect. PUE (Power Usage Effectiveness) improvements can eliminate millions of KGs of CO2 emissions.

In broad strokes, it is a data center that maximizes energy efficiency. To give you a more exact sense of what that means, we’ve identified some of the factors that contribute to data center environmental responsibility.

Energy Source

As a customer it is worth asking where the energy comes from. A data center that is using green energy (hydroelectricity, wind or solar) minimizes its carbon footprint. Fossil fuels are widely used in the data center industry. One problem with fossil fuels is the up and down nature of costs. Renewable energy costs are ‘stable’, because there is virtually no recurring cost. Wind and sun are free.

Data centers are always prepared for power outages / GRID failures and have batteries and generators on-site. Data centers can use diesel aggregates on GTL (Gas To Liquid). GTL is a replacement for diesel fuel and is produced on the basis of natural gas. It has the advantage that it is highly biodegradable and is almost clear of Sulphur and aromatics.

Power Usage Effectiveness

As described data centers consume 3% of the total energy and astonishing one-fifth of the World’s energy by 2025, according Data Economy. A green data center endeavours to conserve energy by using as little as possible on non-IT functions such as cooling. The Power Usage Effectiveness (PUE) metric is central to this effort. To calculate PUE, divide the total amount of electricity entering a data center / rooms by the amount specifically powering the IT load. A perfect PUE rating of 1 would mean all a facility’s energy goes to the IT load. This is more wishful thinking than a reality at this point; however, some of the most efficient data centers in the world boast an average annual PUE in the 1.1 range.

Cooling method

Cooling-related energy-saving methods will be captured in the average annual PUE, but they’re worth examining, because they illuminate the types of efforts that go into managing a green data center.

IT equipment generate heat. Heat must be abducted by a fluid (typically air), with that fluid treated and circulated in the most efficient manner possible like described in our blogpost: Cabinet Airflow Management Done Right.

The cooling unit used in the data center, which should be selected based on the climate, are an important factor of the PUE. Indirect evaporative cooling, for instance, is a highly efficient process in moderate-to-dry climates that have abundant access to water. It involves adding water to the air to lower its temperature. Datacenter.com is using Indirect Adiabatic cooling without use of any compressor to reduce to power usage overhead. More about our Indirect Adiabatic Cooling platform is described in our earlier blogpost: Adiabatic cooling.

How do we get greener?

Datacenter.com strives for improvement in all operations, not the least of which are our environmental responsibility efforts. We carefully track the energy use of our facilities in order to reduce costs and footprint. Our goal is to lower our PUE and CUE (Carbon Usage Effectiveness) in all our facilities with innovative technical solutions and just common-sense behaviour.

More Insights

  • Datacenter.com Announces the Coming Departure of Jochem Steman, CEO

    Datacenter.com announced announced today that Jochem Steman, has notified the Company that, after four years at Datacenter.com, he has decided to step down as Chief Executive Officer and leave the company in the coming months.

    Read more
    Read more
    news
  • Customer statement on Coronavirus (COVID-19) outbreak

    As the World Health Organization confirms Coronavirus (COVID-19) as pandemic Datacenter.com is intensifying its efforts to mitigate the spread of the virus among our employees, customers, partners and suppliers. Our facilities are 100% operational and we are taking all possible measures to ensure we can maintain this service level while ensuring the health and safety of all that interact with our facilities.

    Read more
    Read more
    news
  • Datacenter.com completes expansion of Amsterdam Data Center

    Datacenter.com announced it has completed phase II of its Datacenter.com AMS1 data center. The expansion was necessary due to the strong demand from domestic and international enterprise and cloud computing customers looking to reduce IT infrastructure costs.

    Read more
    Read more
    news

Call us on +31 (0)20 - 2384 200
We are happy to answer your question

Email us for more information