Skip to content

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.

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.

Read More →

How the 30% Super Depreciation Boosts Hardware Startups in the B2B Sector

Discover how the 30% super depreciation tax incentive helps hardware startups overcome investment barriers and accelerate growth in B2B markets.

Read More →

Germany Super-Deduction 2025: Growth Booster Tax Guide

Claim Germany's 30% super-deduction on green tech investments under the 2025 Growth Booster Act. Eligible assets, declining balance method & worked examples.

Read More →

30% Super Depreciation: Tax Savings & Green Investment Guide

Unlock tax savings with Germany's 30% super depreciation. Learn how to claim it on green & digital investments, reduce taxable profit & strengthen ESG goals.

Read More →

How Companies Prioritize ESG Topics Using VSME and Double Materiality Analysis

Learn how companies use VSME and double materiality analysis to prioritize ESG topics, optimize sustainability strategies, and meet regulatory requirements.

Read More →

Green Micro-SaaS: AI and APIs Driving Sustainable Climate Solutions

Discover how Green Micro-SaaS leverages AI and environmental APIs to create efficient, low-impact climate solutions for businesses of all sizes.

Read More →