WWF drives nature conservation and sustainability at the intersection of business, politics, and society, supporting companies on their path to holistic and effective transformation.

E.ON Group Innovation is E.ON’s incubator for solutions and business models, providing technology and expertise for the new world of energy. As part of one of Europe’s largest energy companies, it drives innovation for the E.ON Group by building new solutions and fostering collaboration with startups, universities, and innovative companies. E.ON Group Innovation’s diverse team leverages a vast innovation network to identify and evaluate new developments in the global energy ecosystem, test and develop new technologies and business models, and bring them to market for E.ON’s core business.

firstcolo operates a state-of-the-art data center in Frankfurt am Main, delivering tailored hosting and colocation services for businesses with high demands on security, availability, and performance. The company stands out through personal consultation, flexible infrastructure services, and 24/7 support by in-house experts. Sustainability is key: Operations run entirely on renewable energy, combined with energy-efficient technologies for environmentally conscious IT infrastructure.

GreenSign Institut, based in Berlin, is a leading provider of sustainability certifications for the hospitality industry in Germany. Since 2015, it has offered a transparent and practical assessment system, evaluating over 130 criteria across environmental, social, and economic dimensions. Recognized by the Global Sustainable Tourism Council (GSTC), GreenSign certifications—including Hotel, SPA, Gastro, Office, and Circular—align with international standards such as ISO 14001 and ISO 26000. The certification process involves a self-evaluation and an on-site audit, culminating in a three-year certification that supports continuous improvement.

neustrom is Germany’s leading partner for energy-intensive industrial and commercial companies. With its AI-based controller and software (the neustrom KI-Pilot), the company provides the digital infrastructure to master the renewable energy era. AI-powered forecasting and real-time optimization reduce energy costs by up to 30% while minimizing procurement risks and carbon emissions. neustrom enables flexible use of on-site generation, storage, and market access through automated, precise control.

At GREENTECH CAREERS, we connect talented individuals with companies that embrace sustainability. Whether you’re an employee looking to take the next step in your career or a company looking for experts, our platform offers the right solutions. As an official partner of the GREENTECH FESTIVAL, we provide access to an exclusive network of leading innovators and experts in the GreenTech industry, creating a strong ecosystem for sustainable careers.

Heatle is a German company revolutionizing how we heat beverages and food. Its system—comprising a sleek base and a wireless heating rod with a magnetic disc—lets you heat any liquid directly in your cup, pot, or even hot water bottle. No need for kettles or microwaves. With precise control from 30°C to 100°C, Heatle offers fast, efficient, and versatile heating in any non-metallic vessel. Ideal for tea, coffee, baby food, and more. Elegant design meets smart technology—for a cleaner, faster, and more sustainable way to heat.

Lifestyletest app inspires people towards lifestyle with less climate impact. In 18 months, the app has +415K tests and 62MKg CO2 removed (+100K Berlin to London flights). Data from the app provides insights to policy making + business. Our goal is to take the app from current 10 EU to 50+ countries.

The German government want to use digital technologies to transform the economy towards greater sustainability and climate protection. The aim of the GreenTech Innovation Contest program is to strengthen Germany as a high-tech location for digital technologies and business models, thereby consolidating German and European sovereignty.
We address digital technologies on three levels:
1. sustainability through digital technologies
2. sustainability of digital technologies
3. measuring sustainability with digital technologies
The technology program aims to promote the use of digital technologies as the key to combining economic and ecological interests.

Ecofair is Scandinavia’s first eco-friendly exhibition, event and retail company.
The company was founded based on a mission to transform the expo industry to benefit people, companies and our planet.
We work with our own material “Ecoboard”, which is produced from at least 92% recycled paper, as well as a range of carefully chosen products from selected suppliers that share our own values. All of our products are reuseable and, of course, 100 % recyclable.
We believe that fantastic events and exhibitions doesn’t need to cost the Earth.

SIRPLUS is a Berlin-based impact startup focused on rescuing surplus food. Partnering with producers and wholesalers, the company reintegrates perfectly edible yet discarded products into the market. Customers gain access to a growing range of goods at up to 80% off. In addition to its D2C model, SIRPLUS supports companies with sustainable employee benefits and tax-free incentives that promote wellbeing, appreciation, and environmental responsibility.