aedifion, Green Fusion and Optiml Announce Collaboration to Accelerate Portfolio Decarbonization

Optiml, Green Fusion and aedifion have announced a strategic collaboration to help real estate owners and operators decarbonise portfolios faster and more economically by connecting building-level energy management and optimisation with portfolio-level transition planning and capital allocation.

Dr.-Ing. Johannes Fütterer, CEO & Co-Founder, comments, “Decarbonization must not fail because of budget constraints or complexity. Buildings can already be operated far more efficiently today, without major construction work. By combining these efficiency gains with Optiml’s planning intelligence, we enable owners to reduce CO₂ faster, improve NOI, and follow a clearly prioritised roadmap for future investments. Together with Green Fusion, we are creating an integrated system that translates operational data from residential and commercial buildings directly into strategic investment decisions. This turns energy efficiency into a true value lever for entire portfolios.”

Paul Hock, CEO and Co-founder at Green Fusion, highlights, “Decarbonization of existing housing stock often fails due to high investment costs, such as those associated with building insulation. With Green Fusion, however, we can reduce energy consumption by around 16% immediately through AI-supported heating optimization, without any structural interventions and regardless of the type of heating system installed. Through our collaboration with aedifion and Optiml, we incorporate these operational successes directly into strategic asset planning. This is how we make climate protection measurable, financeable, and scalable for portfolio managers.”

Nico Dehnert, Co-Founder & CCO of Optiml, adds, “Decarbonization has become a capital allocation and refinancing topic. Owners need to reduce energy costs now, demonstrate progress in the transition with data, and sequence the remaining CapEx in a way that works within real constraints—budgets, delivery capacity, and financing timelines. By combining Green Fusion and aedifion’s operational optimisation with Optiml’s REDI decision layer, we enable clients to capture near-term efficiency gains and turn them into investment-grade transition plans, linked to NOI, risk and execution.”

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