Sustainable Performance by Design

We at maincubes take a responsible approach to digitalization and fulfill our role as the backbone of digital infrastructure with ambition and consistency. The ESG perspective is an integral part of our attitude and actions. From planning and construction to the operation of our data centers.

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Creating Smartest Places

For us, sustainability is not an add-on, but a business-critical factor. Under the theme “Creating Smartest Places,” we unite technological excellence with ecological and social responsibility. Through advanced Data Center Engineering, we build resilient infrastructure that enables our customers to meet ESG targets and reporting requirements, while creating a positive impact on investors, partners, and local communities. In line with this vision, we actively contribute to the United Nations Sustainable Development Goals (SDGs), supporting global efforts toward a sustainable future.

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Our ESG Promise

Designing infrastructure responsibly. For sustainable development that benefits the economy, society, and the environment alike.

Enviroment

We are deeply committed to environmental sustainability, integrating eco-friendly practices across all aspects of designing and operating data centers.

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Social

We promote a culture of equity, diversity and shared value within our team and the ecosystem we operate in.

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Governance

We uphold ethical business through robust structures that meet the expectations of our customers, investors, regulators, employees, and the communities that host us.

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“Sustainability is a strategic imperative for maincubes – our ESG strategy creates long-term value through the highest standards.”

Oliver Menzel, CEO

“Sustainability is a strategic imperative for maincubes – our ESG strategy creates long-term value through the highest standards.”

Oliver Menzel, CEO

Substainabiliy in Action: Our ESG Highlights

The first half of 2025 has been a powerful demonstration of responsible growth in action. Discover our Sustainability Update Q1 & Q2 2025.

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As part of our mainHub Berlin’s zoning plan, we’re creating an ecological habitat to support biodiversity

We are demolishing a 90,000-square-meter brownfield site and creating an ecological habitat to improve biodiversity and create long-term value for nature.

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BER01 is designed as a certified green data center, in full compliance with the “Blauer Engel” eco-label criteria

Our BER01 data center is fully aligned with the criteria of the “Blauer Engel”, Germany’s official and a rigorous eco-label for sustainable data center design.

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Our female representation is 24.3 %, which is triple the global industry average

Concurrently, we made significant strides in reducing the unadjusted gender pay gap, which decreased from 35.7 % in 2023 to 27 % in 2024.

Our “Green & Digital” initiative with schools and city stakeholders to promote urban greening

As part of Dietzenbach’s “Green & Digital” initiative, we collaborate with local schools and the City of Dietzenbach to develop projects that promote biodiversity and climate resilience.

We secured a sustainability-linked loan to further confirm our commitment to sustainability

We have tied our growth financing to concrete environmental, social, and governance (ESG) targets, confirming the confidence of our lenders in maincubes’ long-term and sustainable expansion strategy.

External auditors have confirmed the EU taxonomy alignment for our FRA02 and BER01 site

Our newly constructed FRA02 data center aligns with the EU Taxonomy standard, underscoring maincubes’ commitment to stringent environmental stewardship, regulatory compliance, and creating long-term value for investors and clients alike.

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“Sustainability is key to resilience and competitiveness – we are embedding ESG principles into our financing strategy and partnering with companies that create sustainable value.”

Martina Therese Kiehas, PhD
Head of ESG

“Sustainability is key to resilience and competitiveness – we are embedding ESG principles into our financing strategy and partnering with companies that create sustainable value.”

Martina Therese Kiehas, PhD
Head of ESG

ESG Principles in Action – Examples from Our Locations

At maincubes, sustainability is a fundamental component of every data center we build and operate. Here, we present selected examples of how we put our ESG principles into practice – as part of our comprehensive sustainability commitment across all our locations.

OVERVIEW

maincubes ESG Report

In our Sustainability Report 2024 you’ll find comprehensive information about our ESG strategy and sustainable business practices, highlighting a year of transformative growth and a deepened commitment to environmental, social, and governance (ESG) principles.

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ESG Insights

We provide regular updates on our initiatives, progress, and best-practice examples – presented transparently to give you a well-founded and comprehensive understanding of our ESG activities.