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My journey, written down.

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

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

Energy · August 15, 2026

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

One set of numbers shows up in every second deck on grid-scale batteries: 46 percent from frequency containment reserve, 38 percent from intraday, 16 percent from day-ahead. It comes from a model calculation for a 20 megawatt, 40 megawatt-hour battery that earned around 3.7 million euros in 2024. …

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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 →

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

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Crypto holding period: what the German bill actually says

Finance

Crypto Holding Period: What the German Bill Actually Says

August 12, 2026

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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

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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

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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

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Whatnot fees and valuation: what selling trading cards really costs

Commerce

Whatnot Fees and Valuation: What Selling Trading Cards Really Costs

August 10, 2026

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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

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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

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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

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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

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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

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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

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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

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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

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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

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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

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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

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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

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Crypto 2026: What Really Remains After the Euphoria

Finance

Crypto 2026: What Really Remains After the Euphoria

July 29, 2026

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Stablecoins and the Quiet Rebuild of Payments

Finance

Stablecoins and the Quiet Rebuild of Payments

July 28, 2026

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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

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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

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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

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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

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The Autonomous Organization: When People Decide and Agents Execute

AI

The Autonomous Organization: When People Decide and Agents Execute

July 25, 2026

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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

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Rebuilding My Website with AI Agents

AI

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

July 21, 2026

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Moltbot Explained

AI

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

January 29, 2026

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Founder Life

2020 Review

December 17, 2020

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No Time for Updates -Just Sprints

Founder Life

No Time for Updates -Just Sprints

August 20, 2020

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100 Day Sprint for ePilot Mobility

Energy

100 Day Sprint for ePilot Mobility

June 24, 2020

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Business Resume in Times of Covid-19

Founder Life

Business Resume in Times of Covid-19

May 20, 2020

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Remaining Positive

Founder Life

Remaining Positive

March 31, 2020

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New Milestones and Countries for ePilot

Energy

New Milestones and Countries for ePilot

February 27, 2020

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What can you do in 3 days?

Founder Life

What can you do in 3 days?

January 29, 2020

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Welcome to the Age of Voice

AI

Welcome to the Age of Voice

December 19, 2019

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Finance

Crypto Update

November 28, 2019

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The Big 3 for the Next 3 Weeks

Founder Life

The Big 3 for the Next 3 Weeks

November 6, 2019

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Everything Can Be Optimized

Founder Life

Everything Can Be Optimized

September 23, 2019

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eMobility as a Service with ePilot

Energy

eMobility as a Service with ePilot

August 8, 2019

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Startups, Corporates and Innovation

Founder Life

Startups, Corporates and Innovation

June 12, 2019

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Medical Cannabis or Cosmetic? Taking risks or ROI Rewards

Commerce

Medical Cannabis or Cosmetic? Taking risks or ROI Rewards

May 22, 2019

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12 Month Founder Update

Founder Life

12 Month Founder Update

April 18, 2019

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