What Greenergy Data Centers does

Greenergy Data Centers is a privately held Estonian colocation and built-to-suite data center operator founded in 2020 and headquartered at Alajaama tee 1, Hüüru, near Tallinn. The company operates a single purpose-built, EN 50600-certified facility — claimed as the largest and most power-efficient data center in the Baltic region — and sells rack/cage colocation as well as custom-fit data halls, floors, and full facilities targeting enterprise and high-performance computing/AI workloads. Customers disclosed include SEB Bank, NETS Estonia, Playtech, Enefit (Eesti Energia), Tavid, Zone Media, R8 Technologies, and OIXIO, spanning financial services, payments, gaming, energy, precious metals trading, internet infrastructure, AI, and IT services.

The technical platform pairs modular architecture with Siemens AI-driven cooling optimization, cold aisle containment, AI-driven CCTV surveillance with thermal imaging, multi-layer perimeter security (2D fencing, man traps, multi-factor authentication), and an oxygen-reduction fire prevention system. Contracted grid electricity of 18 MW, immediately upgradeable to 31.5 MW and extensible to 300+ MW within 18 months, supports a per-cabinet capacity of up to 20 kW, redundant N+1/2N power and connectivity architectures, carrier- and cloud-neutral interconnect with 100 Gb networking, optional EMP shielding, and 100% certified renewable energy with a target PUE below 1.2 versus a 1.5-1.6 industry average.

Revenue is generated through recurring colocation subscriptions and multi-year built-to-suite contracts on a quote-based, non-public pricing model, sold via direct enterprise field sales with case-study-driven content marketing. The company is controlled by the Three Seas Initiative Investment Fund (3SIIF), which financed its 2020 acquisition of MCF Group Estonia (the prior developer of the Tallinn facility), and the long-term articulated strategy is to build a network of sustainable data centers across Central and Eastern Europe.

Name

Greenergy Data Centers

Legal name

Greenergy Data Centers

Website

https://greenergydatacenters.com

Company type

Private

Founded year

2020

Operating status

Operating

Headcount range

11–50 employees

Short description

Greenergy Data Centers is an Estonian colocation and built-to-suite operator founded in 2020, running an EN 50600-certified facility in Hüüru near Tallinn that serves enterprise, HPC, and AI clients with renewable energy and a PUE below 1.2.

Ownership category

akta.pro rank

Product category

Data Center Services

NAICS

Computer Facilities Management Services (541513)

SIC

Services-Facilities Support Management Services (8744)

akta.pro primary industry

Enterprise Data Centers & On-Prem Facilities (Owned/Operated) (HDABACAG)

akta.pro secondary industries

Renewable Integration & Energy Efficiency (PUE Optimization, Heat Reuse) (HDABAKAL), Prefabricated/Modular Data Center Infrastructure (Skids, PODs) (HDABAKAK)

Keywords

• Data center colocation
• Built-to-suite facilities
• Enterprise data hosting
• Carrier-neutral connectivity
• Renewable energy data centers

Headquarters

HQ city

Tallinn

HQ country

Estonia

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B

Offering type

Services

Cost components

Infrastructure, Operations, Personnel, Technology or R&D, Marketing or Sales

Revenue model

1. Colocation services: Rack and cage space rental for customer IT equipment. Standard and premium rack options with up to 20 kW per cabinet, dual feed redundant power supply, carrier-neutral connectivity, 24/7 NOC services, and certified renewable energy.
2. Built-to-Suite services: Custom fit-out data hall, floor or full facility for specific workloads. Available electricity contracted at 18 MW upgradeable to 31.5 MW immediately, with grid capacity extension to 300+ MW in 18 months. Includes N+1, 2N and other configurations, EMP shielding available.

Go-to-market motion1 record

Distribution channels1 record

Marketing channels3 records

Core offering

Greenergy Data Centers operates a purpose-built EN 50600 certified data center facility in Hüüru, Estonia, selling Colocation (rack and cage space rental with redundant power, AI-driven cooling, and carrier-neutral connectivity) and Built-To-Suite (custom fit-out of data halls, floors or entire facilities from kilowatts to megawatts) services to enterprise and HPC/AI customers. Services run on 100% certified renewable energy at a target PUE below 1.2, with 24/7 NOC and security.

Product overview

Greenergy Data Centers offers two core service offerings: Colocation (rack and cage space with standardized 42U racks up to 20 kW per cabinet, featuring AI-driven cooling and redundant power) and Built-To-Suite (custom dedicated facilities scalable from kilowatts to megawatts with configurable redundancy and EMP shielding). Both services share common infrastructure foundations including EN 50600/ISO 27001/ISO 9001 certification, renewable energy with PUE < 1.2, cloud- and carrier-neutral connectivity, and 24/7 security and NOC support.

Differentiator

Problem solved

Functional benefit

Products and services

• Colocation

Quantifiable outcome

• PUE target of < 1.2 (vs. industry average of 1.5-1.6)
• +4 more outcomes

Named customers8 records

Segments3 records

Ideal customer profiles3 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

AI capability2 records

Feature6 records

Scale indicators6 records

Recent moves6 records

Expansion highlights6 records

Direct peers

• Verne Global: Icelandic data center operator purpose-built around 100% renewable energy and free cooling for HPC and enterprise workloads. Closely comparable sustainability and high-density compute positioning relative to Greenergy.
• EcoDataCenter: Swedish colocation operator built around climate-positive, high-efficiency data centers with strong renewable energy positioning. Closely mirrors Greenergy's value proposition of energy-efficient, certified, sustainable enterprise colocation in Northern Europe.
• atNorth: Nordic colocation operator focused on sustainable, high-density HPC and AI workloads across Iceland, Sweden, Denmark, and Finland. Closely comparable on sustainability narrative, Nordic geography, and HPC/AI customer focus.
• Bahnhof: Swedish data center operator with multiple sustainability-certified facilities across the Nordics. Directly comparable to Greenergy as a privately-held, sustainability-led European colocation provider serving enterprise and public-sector clients with a focus on renewable energy.
• DigiPlex: Nordic colocation provider (now part of Stack Infrastructure) with multiple Tier III-equivalent facilities serving enterprise, government, and HPC clients. Comparable scale, certification profile, and Nordic/Baltic-adjacent geographic focus.
• Hetzner Online: German-headquartered data center operator offering colocation and cloud services across multiple European locations. Comparable as a privately-held European colocation operator serving enterprise customers with a focus on energy efficiency and self-built facilities.

Broad incumbents

• Iron Mountain Data Centers: Large multi-tenant data center operator with a growing European portfolio serving enterprise and government clients, including secure/compliant facilities. Broad overlap with Greenergy's compliance-led, security-focused positioning.
• Digital Realty: Global hyperscale-adjacent data center platform with significant European footprint serving enterprise and cloud customers. Comparable offering for large-scale colocation and built-to-suite deployments but as part of a much broader portfolio.
• Equinix: Global colocation and interconnection incumbent operating hundreds of IBX data centers worldwide. Overlaps with Greenergy's enterprise colocation and carrier-neutral connectivity value proposition, but at vastly greater scale and geographic breadth.

Regional players

• Telia Eesti: Incumbent Estonian telecom operator with data center and cloud infrastructure serving the Estonian market. Regional peer that competes for the same enterprise and public-sector colocation demand in Estonia.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

Compliance3 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles2 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Greenergy Data Centers