Data Centers for Cloud and AI Providers and the Public Sector
With a portfolio of over 400 MW of IT capacity (operating and under development), maincubes is Germany’s leading data center provider.
Scale Up in Frankfurt and Berlin!
Located in major European hubs such as Frankfurt, Berlin and Amsterdam, our data centers are designed for maximum availability, energy efficiency and regulatory alignment – ideal for cloud-native services, compute-intensive applications and long-term infrastructure strategies.
#1
Leading German Provider
>
400
MW
Platform
(Operating & Under Development)
7
Locations
in Europe
LATEST BLOG POSTS
maincubes Blog
13 January 2026
Direct-to-Everything Liquid Cooling for High Density Data Centers
AI and Cloud Provider
Data Centers for Cloud & AI Providers
maincubes specializes in high-performance hyperscale data centers designed to meet the evolving demands of cloud and AI providers. Whether powered shell or built-to-suit, we develop solutions tailored to your specific requirements. As a German provider, we bring deep expertise in regulatory compliance and offer comprehensive support in site selection, permitting, and the provisioning of critical resources such as power and connectivity.
With years of project experience and a strong partner ecosystem, we enable fast, future-ready deployments – in close collaboration with you.
Public Sector
Data Centers for the Public Sector
maincubes provides highly secure data center environments tailored to the specific requirements of government bodies, public institutions, and critical infrastructure organizations. Our solutions meet the highest standards for data protection, security, and sovereignty – fully aligned with both national and EU regulations.
With state-of-the-art infrastructure, certified operations, strict physical access controls, and complete transparency, we offer a trusted environment for sensitive applications and data.
Whether it’s specialized government IT services, administrative platforms or critical infrastructure systems – with maincubes, you benefit from high availability, sovereign data control, and full regulatory compliance.
Data centers
Our Locations
BER02
Berlin
Germany
144-186
MW*
Capacity
12/2027
Construction
443352
ft²*
Whitespace
New IT capacity for large-scale needs in Berlin: Secure power supply, AI-ready, AI/HPC-ready cooling options, Ready for service 12/2027. (*depending on the design)
FRA04
Frankfurt
Germany
40
MW*
Capacity
Q1/2029
In Planning
108000
ft²
Whitespace
New IT capacity for hyperscale needs in Frankfurt: Secure power supply, AI-ready, AI/HPC-ready cooling options, Ready for service in 2029. (*depending on the design)
FRA03
Frankfurt
Germany
16
MW
Capacity
08/2026
Construction
82000
ft²
Whitespace
maincubes data center in Frankfurt: Carrier-neutral, technology-independent, and AI-ready – with maximum flexibility and liquid cooling.
BER01
Berlin
Germany
9
MW
Capacity
2025
In Operation
55000
ft²
Whitespace
maincubes’ sustainable, high-security data center in Berlin: TÜV and ISO certified, with 100 % availability and a focus on climate protection. “Blue Angel” certified and fully EU taxonomy compliant.
FRA02
Frankfurt
Germany
8
MW
Capacity
2024
In Operation
54000
ft²
Whitespace
Data center for government agencies and public sector organizations in Frankfurt: Maximum operational flexibility, innovative cooling technology, and consistent sustainability. Fully compliant with the EU taxonomy.
FRA01
Frankfurt
Germany
6
MW
Capacity
2017
In Operation
45000
ft²
Whitespace
maincubes colocation data center in the heart of Frankfurt: Optimally connected, energy-efficient, and with 100 % uptime
AMS01
Amsterdam
Netherlands
5
MW
Capacity
2018
In Operation
41000
ft²
Whitespace
maincubes data center in Amsterdam: First-class connectivity, OCP Ready™ certified, and designed for maximum power density – the premier destination for colocation in the Netherlands.
At Home in Europe’s Digital Hubs
With locations in Frankfurt, Berlin, and Amsterdam, we are present where Europe’s data streams converge. Frankfurt, centered around the world’s leading internet exchange, is where we began and which remains the backbone of our infrastructure to this day. Berlin complements this network, serving as a gateway to Eastern Europe and providing access to one of the continent’s fastest-growing digital corridors.
Your Benefits
TAILORED SOLUTIONS
We ensure that new data center capacity integrates seamlessly into your existing infrastructure – precisely tailored to your requirements.
100 % AVAILABILITY
We take care of power supply and all necessary building permits to ensure the timely delivery of new capacity – aligned with the requirements of AI and cloud workloads as well as public institutions.
EUROPEAN MARKET
100 % guaranteed data sovereignty for enterprises and public institutions, enabled by German ownership and European data center locations.
SUSTAINABLE OPERATIONS
Sustainable operations with a focus on ESG: Our data centers are optimised for sustainable efficiency from planning to operation. Features include a PUE of less than or equal to 1.2 and waste heat utilisation with local partners.
EXCELLENT INFRASTRUCTURE
> 400 MW of data center capacity in Frankfurt and Berlin: Available from 2027 – with significant expansion potential in key European markets.
ESG
Your ESG Goals, Our Mission.
Sustainability is part of our DNA. Discover how maincubes actively pursues ESG goals and consistently implements measures for ecological and social responsibility.
Press
Press
maincubes Confirms EU Taxonomy Alignment for BER01, Advancing Sustainable Digital Infrastructure
Press
maincubes awarded EcoVadis Silver Medal for sustainability performance
Press
maincubes Secures €2.5 Billion Financing to Accelerate Growth as a Leading European Data Center Operator
Press, ESG
maincubes Achieves All Sustainability-Linked Loan KPIs During First Half of 2025 and Expands ESG Initiatives
Press
Zoning Plan Approved and Grid Connection Agreement Signed: maincubes to Begin Development of ‘mainHub Berlin’ Data Center Campus in Nauen
Press, ESG
Pioneering Progress: maincubes Publishes 2024 Sustainability Report
Press
Thomas Wacker Joins maincubes as Chief Development Officer (CDO)
Press, ESG
maincubes FRA02 Data Center Meets EU Taxonomy Criteria
Career
Careers at maincubes
Are you fascinated by the world of high-performance data centers? At maincubes, you’ll help shape the digital infrastructure of tomorrow – for the cloud, AI, and businesses around the world. We don’t just create smart spaces for data; we also build work environments for people who want to make a real difference. Does that sound like you?