Blog

My journey, written down.

Thoughts on energy, digital finance, commerce and agentic development – as they happen.

Archive

Earlier articles

From more than 10 years of blogging: founder life, travel and the early crypto/Web3 years. German articles are in the German blog →

Incorrect Tax Assessment in Germany: One Month to Object, and What Can Be Fixed After
Finance

Incorrect Tax Assessment in Germany: One Month to Object, and What Can Be Fixed After

November 1, 2026
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Direct Marketing for Solar in Germany: Mandatory Above 100 kW, Rarely Worth It Below
Energy

Direct Marketing for Solar in Germany: Mandatory Above 100 kW, Rarely Worth It Below

October 31, 2026
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Audi's US Plant: What Germany Needs to Learn
Politik & Gesellschaft

Audi's US Plant: What Germany Needs to Learn

October 30, 2026
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Grid Fee Exemption for Battery Storage: Why 1 January 2027 Now Decides
Energy

Grid Fee Exemption for Battery Storage: Why 1 January 2027 Now Decides

October 29, 2026
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Germany's Active Pension: 2,000 Euros a Month Tax-Free
Finance

Germany's Active Pension: 2,000 Euros a Month Tax-Free

October 28, 2026
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Suspension of Enforcement in German Tax Law: How to Stop the Tax Office Collecting
Finance

Suspension of Enforcement in German Tax Law: How to Stop the Tax Office Collecting

October 27, 2026
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sonnen Insolvency: What Battery Owners Should Do Now
Energy

sonnen Insolvency: What Battery Owners Should Do Now

October 26, 2026
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Minus 1% Before, Plus 12.4% After: What the Midterms Do to Markets
Finance

Minus 1% Before, Plus 12.4% After: What the Midterms Do to Markets

October 26, 2026
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Record Retention Periods in Germany: 8 Years for Vouchers, 10 for Books, What Goes in 2027
Founder Life

Record Retention Periods in Germany: 8 Years for Vouchers, 10 for Books, What Goes in 2027

October 25, 2026
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Letters After Company Registration in Germany: Which Are Real and Which Are Just Offers
Founder Life

Letters After Company Registration in Germany: Which Are Real and Which Are Just Offers

October 24, 2026
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