6 AI Agents Plan My Solar System
RAG over 26 documents, Victron sizing, and energy trading — DIY with agent-as-expert
DIY · Balkonkraftwerk · ESS · Node-RED
Three quotes for a photovoltaic system. Each time prices that make my Swabian heart sink. The roof hooks are already mounted, conduits laid. Really just need to slap on the modules. Still: five-figure quotes.
Backstory: €100,000 for a Smart Home
Alexa in every ceiling, KNX, central control. The quotes: almost €100,000. So I planned and built the entire electrical system of my house myself. From the main distribution to the last outlet. As a mechanical engineer and mechatronics specialist, I can read circuit diagrams and know what a miscalculated 63A sub-panel means in practice.
Once you've seen how much margin sits between material costs and contractor invoices, you see quotes differently. Déjà vu.
More Than Just Solar Panels
I never wanted just panels on the roof. I wanted an energy storage system. Self-sufficiency. Large battery, Home Assistant, energy trading via Tibber. And solar panels as railings instead of glass — DIY with ROI.
How an Agent Becomes a Solar Expert
System Integrator
Overall architecture and Victron sizing.
Structural Advisor
Roof and snow load calculation.
Tax Expert
Income tax exemption for two-family homes.
Grid Coordinator
Grid registration and feed-in tariff.
Solar Agent
26 markdown files as knowledge base.
Safety Agent
DIN VDE 0100, torque specs, safety rules.
At 48 volts and 600 amps, wrong decisions aren't just expensive — they're dangerous. The M10 paradox: M10 busbars on the side, but all cable bolts are M8. Wrong lugs = insufficient contact area at 600A.
The Two-Phase Project
Energy Trading: When the Battery Becomes a Trader
Dynamic ESS in the Victron portal. Tibber electricity prices fluctuating hourly. Winter: grid arbitrage. Transition: self-consumption + peak shaving. Summer at 31 kWp: export maximization. All automatic, all data-driven.
AI as Co-Planner, Not Replacement
“AI doesn't replace an electrician. But it turns an ambitious homeowner into an informed conversation partner.”
The AC side is still done by a professional. But when I talk to them, we talk as equals. And of course I have the planning verified by a solar expert. A second opinion isn't weakness — it's part of the process.
— Philipp
AI-assisted planning for complex projects? Let's talk about agent-as-expert.
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