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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.

Climate Risk in IT Procurement: Assess Data Centre Resilience

Heatwaves already took Google, Oracle and AWS offline. Here is the climate risk checklist every IT buyer must work through before signing a cloud contract.

The Iran Crisis and the True Cost of Fossil Dependency: Five Actions for European Companies

Iran crisis 2026: Why fossil energy dependency is a material ESG risk - and five actions European companies can take now, from PPAs to battery storage.

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VSME Standard 2026: Free Report Template with All 143 EFRAG Data Points

The EFRAG VSME Digital Template explained: all 147 data points mapped to the Excel workbook, the XBRL converter, and a step-by-step guide for SMEs.

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Digital Product Passport (DPP) 2026: EU, China & US Requirements + Implementation Guide

Dated status of the digital product passport in 2026: what is in force in the EU, what is still pending, and how China and the US differ. Last checked 4 September 2026.

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Chemical Decarbonization: The 52% Innovation Gap for VCs

The chemical sector emits 1.3 to 2.5 billion tonnes of CO2e a year, and 52 percent of abatement levers still need innovation. What that gap means for climate VCs.

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Hamburg 2040: Pioneering Strict Climate Regulations for Business Transformation

Hamburg 2040: How binding climate neutrality targets impact your business strategy. Annual CO2 budgets, funding opportunities, and strategic action steps.

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