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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.

Sustainability Reporting Made Easy: A Guide to the VSME Standard for SMEs

VSME explained: the EU's voluntary sustainability reporting standard for SMEs outside CSRD scope, its Basic and Comprehensive modules, and where to get it.

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Navigating ESRS Compliance: Practical Steps for Small and Medium-Sized Enterprises (VSMEs)

Discover how VSMEs can successfully implement the new EU Sustainability Standards (ESRS) with practical steps, tools, and expert support.

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Marginal Abatement Cost Curve (MACC): How to Build One [2026]

What a marginal abatement cost curve is, how to read a MAC curve, and how to build your own MACC in three steps, with sector benchmarks in €/tCO₂e.

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VSME Reporting: Basic vs Comprehensive Module Explained

VSME is the voluntary reporting standard for non-listed SMEs. Basic and comprehensive module compared block by block, with data sources and effort.

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Voluntary vs Regulated Carbon Markets: Risks, Verification & Price Differences Explained

Compliance vs voluntary carbon markets: the legal obligation defines the market. Who verifies what, why the price gap exists, what an EU or UK buyer checks.

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Unlocking the Value of Third-Party ESG Verification: A Strategic Guide for Forward-Thinking Companies

What ESG verification is, how limited and reasonable assurance differ, which rules require a verified report, and how to choose a provider.

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