Facebook Instagram LinkedIn X XING
/
Book a conversation
Blog

My journey, written down.

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

Ten Years of Gründerfreunde: What Grew Out of a Blog About Real Life
Founder Life · September 1, 2026

Ten Years of Gründerfreunde: What Grew Out of a Blog About Real Life

Ten years ago, I started something with friends that was really only meant to be a blog. No business plan, no strategy, just the wish to write honestly about the founder's daily life, the way it really is. That blog became Gründerfreunde. A look back at ten years, and at why the real thing wins in …

Read →
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 →

Dynamic Grid Fees: The Overlooked Lever for Lower Power Bills
Energy

Dynamic Grid Fees: The Overlooked Lever for Lower Power Bills

August 31, 2026
Read →
One Year of the EU AI Act: What Compliance Actually Cost on This Site
AI

One Year of the EU AI Act: What Compliance Actually Cost on This Site

August 30, 2026
Read →
What a BESS EPC Contractor Actually Does
Energy

What a BESS EPC Contractor Actually Does

August 29, 2026
Read →
The MCP Standard: How AI Agents Finally Connect to Real Systems
AI

The MCP Standard: How AI Agents Finally Connect to Real Systems

August 28, 2026
Read →
Securing Land for Battery Storage: What a Lease Really Costs
Energy

Securing Land for Battery Storage: What a Lease Really Costs

August 27, 2026
Read →
E-Commerce Germany: Where Retail Is Growing and Where Live Commerce Fits
Commerce

E-Commerce Germany: Where Retail Is Growing and Where Live Commerce Fits

August 26, 2026
Read →
How to spot fake Pokémon cards: light test, print quality and slab checks
Commerce

How to Spot Fake Pokémon Cards: The Light Test, Print Quality and the Real Numbers Behind the Counterfeit Market

August 26, 2026
Read →
My AI Stack as a Founder in 2026: What Agents Take Over, and What They Don't
Founder Life

My AI Stack as a Founder in 2026: What Agents Take Over, and What They Don't

August 25, 2026
Read →
Crypto ETFs With Staking Yield: What Actually Works in 2026, and What Doesn't
Finance

Crypto ETFs With Staking Yield: What Actually Works in 2026, and What Doesn't

August 24, 2026
Read →
TikTok Shop 2026 for Small Retailers: Is It Worth Getting In?
Commerce

TikTok Shop 2026 for Small Retailers: Is It Worth Getting In?

August 23, 2026
Read →
Card Grading 2026: PSA, CGC or Local Graders, What Pays Off
Commerce

Card Grading 2026: PSA, CGC or Local Graders, What Pays Off

August 22, 2026
Read →
Are Trading Cards an Asset Class? What's Real and What Isn't
Commerce

Are Trading Cards an Asset Class? What's Real and What Isn't

August 21, 2026
Read →
Why Live Shopping Is So Addictive: The Psychology Behind the Buy
Commerce

Why Live Shopping Is So Addictive: The Psychology Behind the Buy

August 20, 2026
Read →
Trust as a Business Model: What Collector Communities Teach Us About Commerce
Commerce

Trust as a Business Model: What Collector Communities Teach Us About Commerce

August 19, 2026
Read →
What a slab is: how a card becomes a rated object
Commerce

What a Slab Is: How a Card Becomes a Rated Object

August 19, 2026
Read →
Live Commerce in Germany: Why the Market Tips in 2026
Commerce

Live Commerce in Germany: Why the Market Tips in 2026

August 18, 2026
Read →
The Live Commerce Market in Numbers: Why We're Building Slabhit Now
Commerce

The Live Commerce Market in Numbers: Why We're Building Slabhit Now

August 17, 2026
Read →
251 Billion and Still Pulling Out: Why a Holding Sees Postponed IPOs Differently
Finance

251 Billion and Still Pulling Out: Why a Holding Sees Postponed IPOs Differently

August 16, 2026
Read →
The Revenue Stack of a Grid Battery: Where the Money Actually Comes From
Energy

The Revenue Stack of a Grid Battery: Where the Money Actually Comes From

August 15, 2026
Read →
141,006 Test Runs, Three Escapes: What I Changed in My Own Agents
AI

141,006 Test Runs, Three Escapes: What I Changed in My Own Agents

August 14, 2026
Read →
Petition 201716: what a Bundestag petition achieves
Finance

Petition 201716: What a Bundestag Petition Achieves

August 13, 2026
Read →
Crypto holding period: what the German bill actually says
Finance

Crypto Holding Period: What the German Bill Actually Says

August 12, 2026
Read →
Live shopping for trading cards: Whatnot, eBay Live, TikTok Shop and Voggt compared
Commerce

Live Shopping for Trading Cards: Whatnot, eBay Live, TikTok Shop and Voggt Compared

August 12, 2026
Read →
911 Million Shares in a Single Day: What the SpaceX Unlock Reveals About Private Valuations
Finance

911 Million Shares in a Single Day: What the SpaceX Unlock Reveals About Private Valuations

August 11, 2026
Read →
400 Gigawatts Want In: What Is Really Sitting in Germany's Battery Storage Queue
Energy

400 Gigawatts Want In: What Is Really Sitting in Germany's Battery Storage Queue

August 10, 2026
Read →
Whatnot fees and valuation: what selling trading cards really costs
Commerce

Whatnot Fees and Valuation: What Selling Trading Cards Really Costs

August 10, 2026
Read →
Why 40% of AI Agent Projects Fail, and How to Be in the 60%
AI

Why 40% of AI Agent Projects Fail, and How to Be in the 60%

August 9, 2026
Read →
What an announced deadline does to a market: solar, heat pumps, air conditioning
Energy

What an Announced Deadline Does to a Market: Solar, Heat Pumps, Air Conditioning

August 9, 2026
Read →
GEO Not SEO: How to Get Cited in ChatGPT, Gemini and Perplexity
AI

GEO Not SEO: How to Get Cited in ChatGPT, Gemini and Perplexity

August 7, 2026
Read →
Germany's Smart Meter Rollout 2026: Why It Stalls and How to Get One Anyway
Energy

Germany's Smart Meter Rollout 2026: Why It Stalls and How to Get One Anyway

August 5, 2026
Read →
MiSpeL Explained: Germany's New Rules for Battery Storage
Energy

MiSpeL Explained: Germany's New Rules for Battery Storage (BESS) and Charging Points

August 5, 2026
Read →
Split air conditioning: costs, benefits and the refrigerant question
Energy

Split Air Conditioning in Germany: What It Costs, What It Delivers and What to Watch in 2026

August 5, 2026
Read →
Dynamic Electricity Tariffs 2026: Who Really Benefits and Who Does Not
Energy

Dynamic Electricity Tariffs 2026: Who Really Benefits and Who Does Not

August 4, 2026
Read →
Energy Trading Meets AI: Where Agents Already Help on the Power Market
AI

Energy Trading Meets AI: Where Agents Already Help on the Power Market

August 3, 2026
Read →
BESS Explained: Why Battery Storage Is Becoming the Backbone of the Energy Transition
Energy

BESS Explained: Why Battery Storage Is Becoming the Backbone of the Energy Transition

August 2, 2026
Read →
When Agents Pay: Why AI Agents Need Their Own Payment Rails
AI

When Agents Pay: Why AI Agents Need Their Own Payment Rails

August 1, 2026
Read →
DAC8: Why the Tax Office Will Know More About Your Crypto From 2026
Finance

DAC8: Why the Tax Office Will Know More About Your Crypto From 2026

July 31, 2026
Read →
Will the One-Year Holding Period Fall? What the 2026 Crypto Tax Debate Means
Finance

Will the One-Year Holding Period Fall? What the 2026 Crypto Tax Debate Means

July 30, 2026
Read →
Crypto 2026: What Really Remains After the Euphoria
Finance

Crypto 2026: What Really Remains After the Euphoria

July 29, 2026
Read →
Stablecoins and the Quiet Rebuild of Payments
Finance

Stablecoins and the Quiet Rebuild of Payments

July 28, 2026
Read →
The EU AI Act from August 2026: What Founders and SMEs Must Do Now
AI

The EU AI Act from August 2026: What Founders and SMEs Must Do Now

July 27, 2026
Read →
From Hamburg to Berlin: Why Handshake Mentality Wins in Tech
Founder Life

From Hamburg to Berlin: Why Handshake Mentality Wins in Tech

July 26, 2026
Read →
From a Budget PC to Autonomous Agents: 20 Years at the Keyboard
Founder Life

From a Budget PC to Autonomous Agents: 20 Years at the Keyboard

July 26, 2026
Read →
What Is an AI Agent, Really? And What Just Sounds Like One
AI

What Is an AI Agent, Really? And What Just Sounds Like One

July 25, 2026
Read →
The Autonomous Organization: When People Decide and Agents Execute
AI

The Autonomous Organization: When People Decide and Agents Execute

July 25, 2026
Read →
Slabhit live show with graded Pokémon card, sneakers and collectibles
Commerce

Slabhit: Why We're Rebuilding Live Shopping for Trading Cards and Looking for Beta Testers

July 22, 2026
Read →
Rebuilding My Website with AI Agents
AI

Rebuilding My Website with AI Agents: Why the New Site Was Born AI-first

July 21, 2026
Read →
Moltbot Explained
AI

Moltbot Explained: Why an AI Agent Shows How Entrepreneurs Will Lead in 2026

January 29, 2026
Read →
2020 Review
Founder Life

2020 Review

December 17, 2020
Read →
No Time for Updates -Just Sprints
Founder Life

No Time for Updates -Just Sprints

August 20, 2020
Read →
100 Day Sprint for ePilot Mobility
Energy

100 Day Sprint for ePilot Mobility

June 24, 2020
Read →
Business Resume in Times of Covid-19
Founder Life

Business Resume in Times of Covid-19

May 20, 2020
Read →
Remaining Positive
Founder Life

Remaining Positive

March 31, 2020
Read →
New Milestones and Countries for ePilot
Energy

New Milestones and Countries for ePilot

February 27, 2020
Read →
What can you do in 3 days?
Founder Life

What can you do in 3 days?

January 29, 2020
Read →
Welcome to the Age of Voice
AI

Welcome to the Age of Voice

December 19, 2019
Read →
Crypto Update
Finance

Crypto Update

November 28, 2019
Read →
The Big 3 for the Next 3 Weeks
Founder Life

The Big 3 for the Next 3 Weeks

November 6, 2019
Read →
Everything Can Be Optimized
Founder Life

Everything Can Be Optimized

September 23, 2019
Read →
eMobility as a Service with ePilot
Energy

eMobility as a Service with ePilot

August 8, 2019
Read →
Startups, Corporates and Innovation
Founder Life

Startups, Corporates and Innovation

June 12, 2019
Read →
Medical Cannabis or Cosmetic? Taking risks or ROI Rewards
Commerce

Medical Cannabis or Cosmetic? Taking risks or ROI Rewards

May 22, 2019
Read →
12 Month Founder Update
Founder Life

12 Month Founder Update

April 18, 2019
Read →