A California homeowner was quoted over $100,000 to go solar with a local installer. He built his own system for $25,500 and now runs his entire house, charges a Rivian R1S, keeps a 3D print farm running, and operates a Bitcoin miner on solar power. The core of the setup is an EcoFlow Delta Pro Ultra X with six battery modules totaling around 37 kilowatt-hours, which matches his typical daily consumption. Twenty-three 400-watt bifacial panels mounted on portable ground stands supply up to 8,000 watts at peak production. A 50-amp cable runs to a generator inlet box wired into his main panel, with an interlock kit that physically prevents grid and generator power from connecting at the same time.
The setup falls between a full do-it-yourself build and a professional installation, and the price gap reflects that difference. A local solar company quoted over $100,000 for a comparable job. A complete DIY approach with loose components might run cheaper than $25,500, but requires pulling permits, sizing and wiring an inverter, managing battery interconnections, and handling every inspection independently. The EcoFlow unit sidesteps most of that: the batteries use proprietary connectors, the inverter is built in, and the app handles monitoring. The portable panel stands are a deliberate choice: because the array can be taken down in minutes, it qualifies as temporary equipment in most jurisdictions, meaning no solar permits were required. The only permitted work was the generator inlet, because it connects to the home's existing wiring and the grid.
Two limitations come up in daily use. Running an electric dryer and charging the Rivian at the same time trips the 12,000-watt inverter cap, shutting the system down until loads drop. The solar input is also limited to 10,000 watts, meaning additional panels beyond the current array produce no benefit without hardware changes. The $3,000 Smart Home Panel 3 upgrade addresses both: it allows multiple Delta Pro Ultra X units to share capacity, adds per-circuit control from an app, and enables automatic failover to grid power during overloads without any flicker. Without it, managing load priority manually is required on days when multiple high-draw appliances run at the same time.
Bottom line: At $25,500 this is not a budget project, but it is a serious one that functions as a whole-home power source rather than an emergency backup. For anyone who moves occasionally or cannot install a roof-mounted system, the portable panel approach is worth a close look: the investment travels with you, and the Smart Home Panel 3 is probably worth adding from the start if you have an electric dryer or an EV.