Nuventura GmbH Develops SF6-Free Switchgear Technologies to Reduce the Energy Industry’s Dependence on Harmful Greenhouse Gases

Nuventura GmbH is a developer of switchgear technology that eliminates the need for greenhouse gases in energy infrastructure. The company’s gas-insulated technology uses dry air instead of sulfur hexafluoride, providing a sustainable solution that enhances equipment monitoring while ensuring compatibility with existing IEC standards.

SME Business Review reached out to Fabian Lemke, co-founder and CEO of Nuventura GmbH, to discuss the company’s mission, its innovative approach to gas-insulated switchgear, and his thoughts on sustainability in the electrical industry. Here’s what Mr. Lemke had to say.

Interview Excerpts

What inspired you to start Nuventura?

I’ve always been passionate about engineering solutions that have a tangible impact. When I realized how heavily the electrical grid depends on SF6, one of the most potent greenhouse gases, it became clear that an alternative was urgently needed. The industry was relying on a material that is thousands of times more harmful than CO2. We saw an opportunity to develop a technology that eliminates this dependency while improving efficiency and reliability. That’s how Nuventura started.

Why has SF6 remained in use for so long despite its environmental impact?

SF6 has been around for decades, and its properties make it an effective insulator for switchgear. It’s reliable, and engineers are familiar with it, which makes change difficult. But the problem is that it has an enormous global warming potential. Regulations are now catching up, and utilities are looking for better solutions. The challenge has always been to provide an alternative that matches SF6 in performance without introducing new risks or complications. That’s exactly what we’ve done by using dry air as an insulating medium.

What makes Nuventura’s switchgear different from traditional systems?

We’ve designed our technology to be a direct replacement for SF6-insulated switchgear, making adoption as seamless as possible. Instead of using a harmful gas, we use dry air, which is abundant, environmentally friendly, and requires no special handling. This reduces complexity, cuts maintenance costs, and eliminates the risk of gas leaks. Our switchgear is designed for longevity, recyclability, and efficiency, ensuring that it fits into existing grids while improving sustainability.

How have regulations influenced the demand for your technology?

Regulatory pressure has increased significantly, especially in Europe, where strict SF6 bans are being introduced. Many utilities and industrial operators are now in a position where they must transition to cleaner alternatives. But beyond compliance, companies are recognizing that sustainable solutions can also be cost-effective. Our switchgear reduces long-term operational costs, which makes the transition even more appealing.

What challenges have you faced in bringing this technology to market?

The biggest challenge has been changing an industry that is naturally cautious. Electrical infrastructure is built for reliability, and utilities need to be absolutely sure that any new technology will work without failure. That’s why we’ve focused on ensuring that our switchgear integrates smoothly into existing systems. We’ve also worked closely with industry partners to validate performance and build trust. Once engineers see how straightforward the transition is, adoption becomes much easier.

What role does sustainability play in your company’s mission?

Sustainability is not just a goal—it’s the foundation of everything we do. We’re not only eliminating a harmful gas but also ensuring that our components are designed for long-term use and recyclability. The energy industry must take responsibility for reducing its environmental impact, and we want to make that as easy as possible for utilities. Our approach is to create solutions that don’t just meet sustainability targets but also improve overall efficiency and reliability.

How do you see the energy industry evolving in the coming years?

The push for decarbonization is only going to accelerate. As more industries electrify and renewable energy plays a bigger role in the grid, the demand for modernized infrastructure will increase. Energy storage, smart grid solutions, and sustainable switchgear will all be crucial in supporting this transition. The industry is moving towards a future where sustainability and efficiency are non-negotiable, and companies that adapt will be the ones leading the way.

What advice would you give to other entrepreneurs working on sustainable technology?

Focus on making adoption as easy as possible. Engineers and decision-makers don’t just want sustainability; they want solutions that work better than what they already have. If you can offer a technology that improves efficiency while reducing environmental impact, you’ll gain traction. Also, patience is key. Change in industries like energy takes time, but persistence pays off.

What’s next for Nuventura?

We’re focused on scaling up and expanding globally. More utilities and industries are looking for SF6-free alternatives, and we want to ensure that our technology is accessible to as many customers as possible. We’re also continuing to refine and improve our solutions, making them even more efficient and adaptable for the energy transition. The goal is to make sustainable switchgear the standard, not the exception.

Fabian Lemke, Co-Founder & CEO, Nuventura GmbH

“Our patented technology replaces Sulphur hexafluoride (SF6) – the world’s strongest greenhouse gas – with dry air, whilst maintaining GIS' traditional strengths i.e. compact physical dimensions. Such alternatives are urgently needed because, in the coming years, regulators are expected to phase out SF6’s use in switchgear due to its high environmental impact.”