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Johannes Fiegenbaum

Johannes is a sustainability consultant and early-stage climate tech investor. With a background in marketing technology, he now helps companies grow sustainably—whether through ESG strategy, carbon accounting, or positioning for Article 9 VC funds. He regularly writes about corporate decarbonisation, product LCAs, and climate innovation, drawing on hands-on experience with startups, investors, and sustainability leaders across Europe.

Why Startups Should Embrace ESG Reporting and How VSME Simplifies It

Discover why ESG reporting is crucial for startups and how the VSME standard offers a simple, cost-effective solution to boost sustainability and growth.

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Why Clean, Connected Data is Essential for Successful ESG and AI Strategies

Discover how high-quality, connected data drives ESG compliance and AI efficiency, enabling companies to meet regulations and achieve sustainability goals.

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Battery Storage Investment 2026: Market Trends, ROI & Project Economics

What drives battery storage cost per kWh in Germany, which markets pay through revenue stacking, and how grid fee rules decide the business case.

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AI Data Center Energy Consumption: 2030 Projections & Sustainability Impact

AI data centre energy and water use, why the 2030 projections diverge, and the energy, water and emissions figures operators have to disclose under ESRS.

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Navigating the ESG Backlash: Risks, Opportunities, and Strategies for EU Companies

The ESG backlash is mostly a US capital-markets story. For EU companies the binding pressure stays regulatory: Omnibus scope, ESRS, and EU claims rules.

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Germany's 30% Declining-Balance Depreciation: Tax Cuts & CO₂ Savings (2025–2027)

Discover Germany's 30% declining-balance depreciation (2025–2027). Cut taxes, reduce CO₂ emissions, and optimize machinery investments. Full guide inside.

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