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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.

Measuring Your Startup’s Impact: Choosing Between Triple Top Line and Lifecycle Assessment

How can you best measure your startup’s impact? There are two main approaches: the Triple Top Line...

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Impact Reporting in Venture Capital: Driving Sustainable Success with the Triple Top Line Framework

Impact reporting is becoming increasingly important in venture capital to make the financial,...

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How Impact Startups Can Leverage AI to Reduce CO₂ Emissions Without External Capital

You can succeed as an impact startup without raising external capital. How? By strategically...

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ESG vs. CSR: Navigating the Shift to Sustainable Corporate Strategies in 2025

ESG (Environmental, Social, Governance) is setting new standards and replacing CSR (Corporate...

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10 Emerging ClimateTech Markets Under €1 Billion with High ESG and Economic Potential

The global ClimateTech market is growing rapidly, with investments and innovation accelerating...

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Degrowth vs Green Growth: Strategic Choices for Sustainable SMEs

Growth or Sacrifice? This question is becoming increasingly urgent for you as an SME. The debate...

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