Blog
Articles and interviews on data centers, IT infrastructure and energy.
70 articles from 2022 onwards, from the Baltics' largest data center. Originally published in Estonian; translated for this site.
Customer interviews are collected under success stories.
28.9.2026
Estonian investors raise their stake in the Hüüru data center to 42.5 percent
Tensor Genesis and UG Investments have raised the Estonian investors' stake in the Hüüru data center from 25.55 to 42.5 percent; the first phase of the AI factory is due by the end of the year.
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12.8.2026
Estonia to open its first AI factory this year
Nebius's 22 MW deployment goes live at Greenergy later this year: the largest AI factory in the Baltics.
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30.7.2026
Greenergy Data Centers to become the Baltics' first AI factory: MCF Group invests nearly 100 million euros in expansion
MCF Group Estonia expands the campus with a 22 MW built-to-suit hall; Caverion as main contractor, ESB Group switchgear, Telora supervision.
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29.7.2026
From utopia to reality: Greenergy Data Centers gets the Baltics' first AI factory
Ten years after work began on the Hüüru data center, Greenergy Data Centers becomes the Baltics' first data center offering AI infrastructure in November 2026. Kert Evert, the data center's driving force, talks about the decade's decisions and what lies ahead.
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28.7.2026
MCF Group Estonia Welcomes Tensor Estate as a Shareholder
3SIIF (advised by Amber Infrastructure) and Tensor Estate establish a joint Supervisory Board; day-to-day operations stay with the existing management team.
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24.3.2026
Why does a digital society need data centers, and who actually consumes the electricity?
Data center energy consumption is often discussed as a mysterious problem, but in reality it is triggered by every one of our digital actions. An overview of how Greenergy Data Centers keeps that consumption efficient.
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19.1.2026
"The elephant in the room" and ChatGPT for every employee: where are Estonia's big companies directing their 2026 IT budgets?
Bolt, LHV, Eesti Loto, and Tallink talk about where their IT budgets are heading in 2026: AI's role is growing, legacy systems are being shed, and sustainability is reaching the server room.
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18.12.2025
"The big fish are looking towards Estonia": Greenergy Data Centers' chief reveals what will happen in 2026
GDC's chief Kert Evert explains why the end of 2025 has turned into a fast-paced sprint: customers are testing AI infrastructure, interest from international players is growing, and in 2026 the first larger AI cluster arrives in Estonia.
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30.10.2025
Why is access management today the weakest link for companies?
GDC's Toomas Kell, Martin Rungi, and Priit Lahi explain why managing access rights and authorizations tends to lag behind at companies, and how simple processes and documentation can avoid major risks.
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10.9.2025
Europe needs more digital sovereignty: why 3NV was founded, and why in Estonia
3NV, founded in Estonia, offers bare metal high-performance infrastructure for European companies that want to rely less on American cloud giants. Co-founders Markkus Millend and Artem Verevskyi explain why they chose Greenergy Data Centers as a partner, and why Estonia.
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11.8.2025
Could an AI gigafactory come to Estonia?
Could Estonia ever host an AI gigafactory? Greenergy Data Centers head Kert Evert and enterprise segment lead Martin Rungi explain what an AI gigafactory is, why Europe is investing in one, and what chances Estonia has of taking part.
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2.6.2025
What do we risk if we miss the ESG train?
International business is moving toward carbon neutrality faster than governments are. Swedbank, Playtech and Greenergy Data Centers explain why ESG has become a necessity for Estonian exporters, not just an option.
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11.4.2025
Entrepreneurs respond: how could Estonia become a global success story in AI?
President Alar Karis has called for using artificial intelligence not the most, but the most wisely. Leaders from Bolt, Fleetbrains, Yera and DriveX Technologies, along with TalTech researchers, explain what it takes for Estonia to move from using AI to building it, and become a global success story.
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8.3.2025
How to attract women into technology? Jaana and Reelika share their experience
Although Estonia considers its technology industry a success, the share of women in the ICT sector is only 25%. In the data center industry the situation is especially poor: the international average for the industry is only 8% women.
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28.2.2025
The biggest crisis of modern times, which fortunately never became reality
On the second weekend of February the Baltic states disconnected from the Russian electricity grid. The Estonian, Latvian and Lithuanian power systems were successfully joined to Continental Europe.
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20.12.2024
What challenges did 2024 bring? Toomas Kell, one of the leaders of Estonia's most modern data center, opens up
In a year-end interview, Toomas Kell, operations and technology director of the Baltics' most modern data center, talks about what the AI boom has changed, how Greenergy Data Centers doubled in volume in a year, and why the next data center will be built outside Estonia.
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18.12.2024
“Every Christmas poem I get ChatGPT to write leaves a footprint.” AI expert Jarmo Tuisk reveals a new angle on why to be careful with artificial intelligence
AI expert Jarmo Tuisk explains why every ChatGPT query leaves an energy and water footprint, and why companies and governments need to weigh artificial intelligence’s environmental impact more consciously as they adopt it.
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2.10.2024
For cleaner air: Zone moves into a green data center
Zone, Estonia's largest provider of domain and web hosting services, has begun moving its infrastructure to Greenergy Data Centers, the most modern and energy-efficient data center in the Baltics.
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17.9.2024
Why is it worth buying data center services from Estonia?
Europe’s data center market is short on supply. This piece explains why Estonia, with its ample power capacity, competitive electricity prices, sustainable energy sector and strong connectivity, is a good place to buy data center services.
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6.8.2024
How does the new EU regulation DORA (Digital Operational Resilience Act) affect the financial sector's IT infrastructure?
Read how the new EU regulation DORA (Digital Operational Resilience Act) affects the financial sector's IT infrastructure. The article highlights the main requirements and actions that banks, crypto-asset service providers, insurers and others must follow to strengthen digital resilience and security. Find out how to adapt ICT systems to the new standards.
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25.6.2024
Estonia's own Netflix and a modern "piggy bank": how technology and managed change help you stay competitive
Technological innovation and managed change play an important role in long-term competitiveness and, through it, in business. Read examples from the archives of Swedbank and ERR.
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19.6.2024
Playtech reduces its environmental footprint with the help of our data center
Playtech, the world's largest developer of gaming software, is significantly upgrading its IT infrastructure to reach carbon neutrality by 2040. To get there, the company with Estonian roots is renewing the IT equipment its business runs on and moving a substantial part of the server rooms of its Estonian development center into the largest data center in the Baltics.
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17.5.2024
A hub of IT businesses is forming around the data center
A center of gravity of sorts has formed around the Baltics' largest data center, with a value that reaches far beyond hosting equipment. A data center is said to be the foundation of an IT business, but the facility in Hüüru on the edge of Tallinn proves the benefit is considerably wider. Liis Tammekivi, head of GDC's partner segment, explains what exactly it consists of.
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15.3.2024
90% of data sits unused. Here is how to get rid of digital waste
Studies show that 90% of stored data (photos, documents, emails and so on) is already sitting unused after three months. Digital waste is not merely a nuisance; it has a significant financial and productivity impact on companies, not to mention wasted energy. For World Digital Cleanup Day we break down why so much digital waste accumulates and how to get rid of it.
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17.2.2024
Birthday interview: Estonia's largest data center completes its second year of operation!
Today, 17 February, marks two years since the landmark day when the ribbon was ceremonially cut in front of the data center in Hüüru on the edge of Tallinn. On the facility's birthday Tõnu Grünberg talks about the challenges that have had to be overcome in two years, how the arrival of the first large-scale data center has changed the Estonian market, and the plan to expand beyond the country's borders.
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8.2.2024
Interview: we have opened a unique partner programme for IT companies
The Greenergy Data Centers partner programme gives IT service providers the opportunity to add equipment hosting in the Baltics' largest and most modern data center to their product portfolio. For the partner it means a new service with a healthy margin, more lasting business relationships thanks to managing the client's IT infrastructure, and the chance to benefit from cooperation with the data center's other customers.
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6.2.2024
What does a working day look like in the operations center of the Baltics' largest data center?
At the heart of every modern data center is an operations center that keeps watch around the clock to make sure the whole machinery works as it should: that the climate systems keep temperature and humidity within the required limits, that voltage and current do not fluctuate, that nothing overheats, that the doors are locked and that nobody moves about the building who should not be there.
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23.1.2024
Where is Europe's largest data center?
As of November 2022 there are more than 1,200 data centers in Europe, with a total of 8.3 million square metres of space and 8,300 MW of capacity. The largest service providers are Equinix with 83 locations across Europe and Lumen Technologies with 56 facilities. Germany and the United Kingdom have the most data centers, well over 400 in each. But where are the biggest ones?
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29.12.2023
Which trends will strongly affect IT managers and specialists in 2024?
Which trends will strongly affect IT managers and specialists in 2024? Find out!
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1.12.2023
Nearly 30 terabytes of data from a single Taylor Swift concert. Why do data volumes keep growing?
AT&T, one of the main US mobile operators, recently announced that during a Taylor Swift concert in Arlington, Texas, 28.9 terabytes of data moved through the AT&T network alone at the venue. Globally, of course, Taylor Swift is not the only reason for growing data volumes. More broadly, the internet and the rapid growth in the number of internet users can be "blamed" for the growth in data volumes.
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28.11.2023
How much does it cost to build a server room on your own premises?
While to learn the price of a data center service you simply ask for a quote, and the cost of the cloud can be found out from another organisation with a similar profile (to get a real-life view), with building a server room the story is somewhat more complicated. Since our staff have that experience, we have done the work for you.
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2.11.2023
Interview with the head of the Dutch Data Center Association: Estonia is well placed to make the next leap
In this interview we focus on why the Netherlands has become one of the hubs of global digital infrastructure, what lies ahead for Estonia and which factors will affect IT-intensive companies most in the near future.
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25.10.2023
What does working in a data center give you?
Unlike quite a few other fields, there is an acute and growing shortage of data center staff worldwide. According to a recent Uptime Institute study, about 300,000 more specialists are needed by 2025 to run the world's data centers. It is clearly a job of the future that cannot yet be studied at school. Experts are needed right now, though.
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4.10.2023
Where is the internet?
You probably use the internet every day. But does the internet exist physically? In reality every e-service, and every piece of information in it, has to be somewhere for real. As a rule that place is servers and related IT equipment that receive, process, store and deliver information. That equipment, in turn, sits in data centers.
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25.9.2023
Which way are Estonian IT directors looking as they draw up the 2024 budget?
What trends prevail in Estonia, and which way are IT directors looking as they draw up next year's budgets? We asked four large companies operating in Estonia for comment.
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8.8.2023
There is no artificial intelligence without a data center
Machine-learning-based artificial intelligence is now available to everyone, and it became an especially hot topic with the spread of ChatGPT. Amid dozens of applications that use AI, however, very little attention has been paid to how an AI is actually put to work.
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21.7.2023
Modern digital society rests largely on the cybersecurity of data centers, where the weakest link is still the human being
Everything on the internet has to physically exist somewhere, and data centers, as parts of critical infrastructure, provide a secure and controlled environment for storing and managing information. Although data centers, as infrastructure service providers, do not directly protect customers' data against all cyber threats (because they do not control customers' data traffic), they undoubtedly have a duty to protect themselves.
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17.7.2023
The European Commission sets a new reporting obligation for organisations that own server rooms
The growing number and size of data centers bring higher energy consumption, and their efficiency matters ever more. EU initiatives such as the European Green Deal and the Energy Efficiency Directive therefore set targets and measures to improve the energy efficiency of data centers. Ultimately this affects both the owners of larger server rooms and the users of data centers.
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2.6.2023
The experts have decided: this is Estonia's best security solution
Every year Estonia's best security solutions are recognised. The Estonian Security Association (ETEL) has led that worthy mission since 2001, and this year too the most outstanding were selected by competition. The winner was the security solution of Greenergy Data Centers.
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22.5.2023
Five myths about data centers! Are clouds really killing off data centers?
Even where the myths about data centers have a grain of truth, it has mostly been "lost in translation". Clouds are not killing off data centers, storing data energy-efficiently in data centers does not cause an energy crisis, a data center can be used even if you only need a few equipment cabinets, and certainly not everyone can put up a proper, reliable and secure data center.
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15.5.2023
"Estonia has many server rooms that have fallen behind the times." How to get "in shape" for a hot summer?
In July last year, heat of more than 40 degrees knocked out Google's data centers in London: the cooling systems proved no match for nature. If even data centers designed specifically for housing servers cannot withstand heatwaves, you can only imagine what it means for those who keep servers on their own premises, in an office building for instance. What to do?
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29.3.2023
TOP 5: these are Estonia’s most secure buildings
Where is Estonia’s most secure building? A look at the security measures behind the Bank of Estonia, Greenergy Data Centers, Tallinn Prison, the Estonian Defence Forces Headquarters and the Riigikogu.
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22.3.2023
Today is the most important day of the digital society
Today, 22 March, is International Data Center Day. Although data is the foundation of the digital society, we often do not notice how much we depend on it every day. So today is a good moment for a small reminder of how far data centers have come in a few decades, and how science-fiction-like the future sometimes looks.
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13.3.2023
INTERVIEW with Tõnu Grünberg, head of the Baltics' largest data center: how to find customers in difficult times?
A year ago the Baltics' largest data center opened its doors on the edge of Tallinn. That coincided with Russia's war in Ukraine, a Europe-wide energy crisis and the chip shortage. CEO Tõnu Grünberg talks about how GDC has coped with the trials and what the year ahead brings.
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10.3.2023
When connectivity is down, business stops. How to prevent it?
The role of data communications in today's society is hard to overstate. When connectivity does not work properly, even a small disruption can cause significant problems. Sometimes that simply means a missed business opportunity, but there are fields, such as aviation, shipping or rescue, where the damage can be very large. What are the solutions?
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30.1.2023
Artificial intelligence is making data centers resemble science fiction films, but it has its price
Aircraft essentially already fly themselves, and we have come very close to self-driving cars. All of that is becoming reality thanks to the wider application of machine learning and artificial intelligence. Will the same fate befall the data centers that are the foundation of our e-societies? Will our digital infrastructure start thinking for itself and become independent, so to speak? Somewhat provocatively, one could say yes!
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20.1.2023
INTERVIEW: data centers will soon get their own ISO standard
In mid-December the Greenergy Data Centers data center on the edge of Tallinn was awarded the EN 50600 certificate, which no other data center in the Baltics or Finland can show. In short, it means the highest reliability, security and energy efficiency. We asked about the future of EN 50600 and why such certificates are needed at all.
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11.1.2023
What will 2023 bring? These are the five hottest technology trends
Modern business uses and produces more data every year. According to International Data Corporation, our datasphere will double between 2022 and 2026. So it is worth asking which currents carry that growth, how we will cope with it, and what it means for our companies.
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10.1.2023
SEB raised the availability and reliability of its digital banking services with our help
SEB has made a significant change to its IT infrastructure, taking the largest and most modern data center in the Baltics into use to serve its customers better. The aim was to modernise the bank's IT architecture, the foundation on which the banking systems accessed over the web and by phone rest. For customers it means, above all, greater reliability.
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29.12.2022
Are data centers causing the energy crisis?
Keeping our digital society running is extremely energy-intensive. Everything we do online has to be stored and processed somewhere, and the volumes are enormous. An estimated three percent of annual global energy consumption goes to data centers, and it is forecast that by 2030 the share may have risen above ten. How do data centers affect us in the context of the energy crisis?
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13.12.2022
Estonia's IT infrastructure receives Europe's highest recognition
Estonia, long at the forefront of the world in IT solutions, has now officially joined the best in IT infrastructure as well. The audit concluded today with the Baltics' largest data center receiving the EN 50600 certificate, confirming that the complex meets the highest international standards. It is the only data center of its kind in the Baltics and Finland.
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12.12.2022
Where are data and data centers a matter of life and death?
When a small online shop's page does not open, it causes annoyance, but usually nothing more. Yet there are fields where even a small fault is too much and the movement of data is critically important. For some organisations or services, errors mean major losses or, in the most extreme case, lost lives.
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30.11.2022
Where is the world's largest data center?
Where is the world's largest data center? The question itself is simple, so one might think the answer is a quick Google search away. The reality is more complicated, because data centers tend to be secretive about their size.
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8.11.2022
Test whether your data is kept securely
Whatever legal business you run, you generate and use data. If you cannot access your data, the business stops or is significantly damaged. Information does not move, orders do not move, money does not move. So the more your activity relies on IT systems and data, the more critical their safekeeping becomes.
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2.11.2022
INTERVIEW: the heat we produce could warm 5,000 homes
As the heating season begins, many Estonians worry about how to keep their homes warm and what it will all cost. In Hüüru on the edge of Tallinn, however, stands a high-tech building with heat to spare. Kert Evert, development manager at Greenergy Data Centers, explains what waste heat is and how data centers can become part of our heating solution in the future.
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18.10.2022
How to escape a captive relationship in IT (vendor lock-in)
All too often it is precisely connectivity and cloud services that become the big bottleneck in the growth of new businesses. To secure control and commercial independence, you would need to use several different providers, or at least keep the door open to do so. A lack of freedom to decide becomes a serious headache sooner or later.
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5.10.2022
The ABC of cyber hygiene: why is it important to back up data?
Have you ever gone to show a friend your holiday photos or videos, only for them not to open? Or sent a colleague a brilliant analysis you wrote a while ago, only for it to contain nothing but strange symbols? And those were the only versions of the files.
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27.9.2022
How does a data center withstand an attack by lightning, an excavator or a jackhammer?
Just as hotels are indispensable for a pleasant holiday, we need data centers to deliver any e-service to the consumer quickly and reliably. You obviously want someone to have verified the quality and reliability of a data center before you. So who does the testing for you? In short, testing is the data center's own duty and responsibility.
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15.9.2022
How do you move servers without interrupting operations?
If information is the bloodstream of a modern company, moving servers is like heart surgery. Everything has to be done quickly, precisely and in a way that keeps the information flowing. Done well, customers did not even notice the move.
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2.9.2022
Top 5 trends in data management and storage
Our daily lives, the activities of companies and the functioning of states depend on digital data and its application. Fewer and fewer organisations and institutions could manage without it. Here are five major currents steering data management today.
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22.8.2022
Why do I need a data center when all my data is in the cloud?
By the end of 2025, an estimated stack of DVDs almost as tall as the Tallinn TV tower will be created in data every day. Many organisations contribute to that, and all of them have to keep their growing data volumes somewhere. Broadly, an (IT) manager has to choose between a public and a private cloud.
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3.8.2022
Who keeps an eye on the equipment while the IT manager is on holiday?
Everyone has probably seen NASA's mission control in some film: a room with a big screen, a host of smaller monitors and people watching them intently, who know the status and the vital parameters of every device on the spacecraft. A similar control room, with a huge screen and focused people, also exists in larger data centers.
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27.7.2022
How to protect nature while using the internet?
How much does watching one short video add to the world's carbon footprint? How often should you spring-clean the cloud so that servers in data centers do not hum for nothing? Is it more economical to send a text message, an email or a Facebook message? These are questions we mostly do not think about, but perhaps we should.
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21.7.2022
"This is all very interesting, but we have seen enough of your kind", or how Estonia's first world-class data center was built
Few believed in building a world-class data center in a small country like Estonia. The required investment was enormous, there were no specialists in the field and a market for such capacity had yet to be created. The doubters were wrong.
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14.7.2022
Hot weather threatens IT equipment. What can be done to protect it?
How can you be sure your equipment will survive a heatwave? The lucky ones can escape the summer heat into cool lake water, but IT equipment cannot come along. What is the solution?
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4.7.2022
How do you recognise a "green" data center?
Keeping our digital society running is energy-intensive. Very. An estimated three percent of annual global energy consumption goes to data centers, where the internet we see on our digital devices physically lives. By 2030 that share may have risen above ten percent. That is why it is vital for data centers to use green energy, and to use it as efficiently as possible.
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21.6.2022
How to protect your e-business from COSTLY outages?
What does one hour of downtime mean for your organisation? And one day? In the modern world such trauma is caused by faults in IT equipment or in the flow of data, which has become the bloodstream of organisations. There is a remedy against such outages, though: place your IT equipment where its reliability is ensured in more than one way.
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31.5.2022
Data center vs cloud: which one wins?
Data keeps growing and it has to be put somewhere. More and more companies look to cloud providers for the solution without thoroughly weighing the alternatives.
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23.5.2022
What makes a data center secure?
If data can be called the gold of the digital age, then data centers obviously have to be as secure as banks. In the Baltics' largest data center on the edge of Tallinn, security is ensured with measures that sound like something out of a science-fiction film.
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15.5.2022
How does your digital well-being depend on data centers?
Every e-service, and every piece of information or action within it on the internet, has to physically be somewhere. As a rule that means servers and related IT equipment that receive, process, store and deliver information. That equipment, in turn, sits in data centers.
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