#122 - Grid Control in Milliseconds: Engineering Energy Systems with Barbara Wittenberg // CTO @ 1KOMMA5°

Real-time system architecture lessons from the edge of the energy transition

Technical infrastructure enables the modern energy transition. Barbara Wittenberg, CTO at 1KOMMA5°, reveals the engineering challenges behind connecting and optimizing 40,000+ household energy assets while building a unified tech platform after acquiring 80+ companies across 7 countries.

Tech leaders will find valuable parallels to their own challenges as Barbara discusses how her team modernized legacy systems, managed complex integrations, and deployed advanced optimization algorithms that must respond in milliseconds to prevent grid failures.

Key technical insights include:

• 🏗️ Building infrastructure-as-code and standardizing operations across acquired companies
• 📊 Creating data pipelines that connect real-world physical devices to cloud optimization systems
• ⚡ The millisecond-level responsiveness required for grid stabilization services
• 🔄 Managing the product transition from siloed applications to integrated platforms
• 🤖 Leveraging AI to automate complex technical explanations to end users
• 🧠 Post-merger integration strategies that preserve valuable domain knowledge

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TIMESTAMPS: [00:00:51] Introduction to Barbara Wittenberg & 1KOMMA5° [00:02:52] Barbara's Journey from Electrical Engineering to CTO [00:05:13] Early Virtual Power Plant Development at E.ON [00:07:05] The Transition from Energy to Tech and Back [00:11:02] Explaining 1KOMMA5°'s Business Model & Technology [00:13:00] The Physics of Energy Systems and Real-Time Control [00:16:41] Grid Operators and the Complex Energy Landscape [00:19:47] Smart Meters and Market Differences Across Countries [00:22:32] Battery Storage and Energy Trading Economics [00:25:35] Building Software Systems for Installation Companies [00:28:54] Tech Stack and Integration of Acquired Companies [00:33:19] Managing 2,500 Employees Across 80+ Locations [00:37:21] Data Standardization and Business Intelligence [00:42:10] Using AI to Explain Energy Decisions to Customers [00:49:22] Female Representation in Energy & Engineering [00:54:28] Closing Thoughts on Consumer Energy Solutions

QUOTES:

• ""We send live signals in two-second intervals to 40,000 assets in the field. In Sweden, we need to respond to grid frequency changes in milliseconds - you can't send faxes, you can't even send an email. You need real-time control of your assets."" - Barbara Wittenberg [00:13:50]
• ""If you want to bring the best solution, you need to have all assets connected in one system."" - Barbara Wittenberg [00:12:12]