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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.

How Startups Can Overcome Common CO2 Accounting Challenges

Startups often fail at CO2 accounting – but there are solutions. Common mistakes like poor data...

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The 7 Key ESG Metrics Every Company Should Track in 2025

ESG metrics help companies achieve their sustainability goals, minimize risks, and seize...

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How to Create a Comprehensive Sustainability Report: Key Steps and Standards

A sustainability report is not just a legal obligation for companies—it’s also a tool to create...

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Power Purchase Agreements (PPAs): A Comprehensive Guide for Sustainable Corporate Energy Solutions

At a time when companies are increasingly seeking sustainable and cost-efficient energy solutions, ...

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How to Position Your (Climate) Tech Startup for Article 9 VC Funds

If you're building a climate tech startup in Europe, chances are you've already heard of Article 9...

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4 Types of Climate Startups That Will Struggle to Raise in 2025

The climate tech landscape in 2025 is marked by a noticeable shift in investor behaviour. With...

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